APACS+ Satellite Control Module (SCM)

Siemens
Energy & Automation, Inc.
Installation and Service Instruction
SD39SCM-1
Rev: 3
March 2005
APACS+™
Satellite Control Module (SCM)
Trademarks
ProcessSuite, QUADLOG, 4-mation, and APACS+ are trademarks of Siemens Energy & Automation, Inc.
Other names in this publication might be trademarks, the use of which by third parties for their own purposes may
violate the rights of the registered holder.
Copyright Siemens Energy & Automation, Inc. 2005
All rights reserved
The reproduction, transmission or use of this document or
its contents is not permitted without express written
authority. Offenders will be liable for damages. All rights,
including rights created by patent or registration of a utility
model or design, are reserved.
Siemens Energy & Automation, Inc.
1201 Sumneytown Pike
P.O. Box 900
Spring House, PA 19477-0900
Disclaimer of Liability
We have checked the contents of this manual for
agreement with the hardware and software described.
Since deviations cannot be precluded entirely, we cannot
guarantee full agreement. However, the data in this
manual is reviewed regularly and any necessary
corrections included in subsequent editions. Suggestions
for improvement are welcomed.
©Siemens Energy & Automation, Inc. 2005
Technical data subject to change.
SD39SCM-1
Contents
Table of Contents
Section
Title
1
1.1
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.2
1.3
Introduction....................................................................................................................1-1
Product Description ......................................................................................................1-1
Soft-Fuse Feature ...................................................................................................1-2
Diagnostics.............................................................................................................1-2
LED Indicators.......................................................................................................1-5
Configuration .........................................................................................................1-5
Terminations ..........................................................................................................1-5
Product Support ............................................................................................................1-6
Related Literature .........................................................................................................1-7
2
2.1
2.1.1
2.2
2.2.1
2.2.1.1
2.2.1.2
2.2.1.3
2.2.1.4
2.2.2
2.2.2.1
2.2.2.2
2.2.2.3
2.2.2.4
2.3
2.4
2.5
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.6
2.7
2.7.1
2.7.2
2.7.3
2.8
2.8.1
2.8.2
2.9
2.9.1
2.9.2
2.9.3
Installation......................................................................................................................2-1
Hardware Identification................................................................................................2-1
Termination Strip and Marshalled Termination Assembly Identification .............2-2
I/O Wiring Considerations............................................................................................2-2
Local Termination Hook-Up I/O Wiring ...............................................................2-3
Discrete Input Channels ...............................................................................2-3
Discrete Output Channels.............................................................................2-3
Local Termination Discrete I/O Power Supply ............................................2-3
Analog Channels ..........................................................................................2-5
Marshalled Termination Interconnect I/O Cable ...................................................2-5
Discrete Input Channels ...............................................................................2-5
Discrete Output Channels.............................................................................2-5
Marshalled Termination Discrete I/O Power Supply ...................................2-6
Analog Channels ..........................................................................................2-6
Installation Preparation.................................................................................................2-7
Environmental Considerations .....................................................................................2-8
Equipment Delivery and Handling .............................................................................2-11
Predelivery Test ...................................................................................................2-11
Factory Shipment .................................................................................................2-11
Receipt of Shipment.............................................................................................2-11
Equipment Handling ............................................................................................2-11
Equipment Storage...............................................................................................2-12
SCM Termination Strip Installation ...........................................................................2-12
SCM Marshalled Termination Assembly and I/O Cable Installation.........................2-13
Marshalled Termination Assembly Installation to DIN Rail ...............................2-14
Optional (Flat Surface) Marshalled Termination Assembly Installation .............2-16
Interconnect I/O Cable Installation ......................................................................2-17
SCM Installation.........................................................................................................2-19
Module Rack Mechanical Keying........................................................................2-19
Module Installation ..............................................................................................2-21
Electrical Installation..................................................................................................2-21
Serial Port Cables.................................................................................................2-22
Marshalled Termination Assembly Discrete I/O Power Fuse..............................2-23
User-Supplied Discrete I/O Power Supply Connections......................................2-25
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i
Contents
2.9.4
2.9.5
2.9.6
2.9.7
2.9.8
2.9.9
2.9.10
SD39SCM-1
Discrete and Analog Signal Connections.............................................................2-27
Unterminated I/O Cable Assembly Connections .................................................2-31
Terminal Block Connections................................................................................2-32
Protective Conductor Terminal ............................................................................2-33
RAM Battery........................................................................................................2-33
Security Switch Setting ........................................................................................2-34
Downloading a Configuration..............................................................................2-34
3
3.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.4
3.4.1
3.4.2
3.5
3.5.1
3.5.2
3.6
3.6.1
3.7
3.7.1
3.7.2
3.8
3.9
3.10
3.11
3.12
Maintenance ...................................................................................................................3-1
Tool and Equipment Requirements ..............................................................................3-1
Preventive Maintenance ...............................................................................................3-1
Visual Inspection....................................................................................................3-1
Cleaning .................................................................................................................3-2
Troubleshooting............................................................................................................3-2
Bezel LEDs ............................................................................................................3-4
Diagnostic Port.......................................................................................................3-4
SCM Removal/Replacement ........................................................................................3-5
Removal .................................................................................................................3-5
Replacement...........................................................................................................3-5
SCM Termination Strip Removal/Replacement ...........................................................3-6
Removal .................................................................................................................3-6
Replacement...........................................................................................................3-6
SCM Marshalled Termination Assembly Removal/Replacement................................3-7
Removal .................................................................................................................3-7
Interconnect I/O Cable Removal/Replacement ............................................................3-7
Removal .................................................................................................................3-7
Replacement...........................................................................................................3-8
RAM Battery Replacement ..........................................................................................3-8
Spare and Replacement Parts........................................................................................3-9
Return of Equipment within North America ..............................................................3-10
Return of Equipment Outside of North America........................................................3-10
Maintenance Records .................................................................................................3-11
4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.3
4.3.1
4.3.2
4.3.2.1
Circuit Description ........................................................................................................4-1
Processor/Communication Section...............................................................................4-1
Processor ................................................................................................................4-1
IOBUS....................................................................................................................4-1
SPIBUS ..................................................................................................................4-1
Serial Ports .............................................................................................................4-2
Diagnostic Port.......................................................................................................4-2
Discrete I/O Section......................................................................................................4-2
Processor ................................................................................................................4-2
External Power.......................................................................................................4-2
Output Channel ......................................................................................................4-2
Conventional Input.................................................................................................4-3
Analog I/O Section .......................................................................................................4-3
Processor ................................................................................................................4-3
Analog Output Channel .........................................................................................4-3
Voltage Output .............................................................................................4-3
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SD39SCM-1
4.3.2.2
4.3.3
4.3.3.1
4.3.3.2
Contents
Current Output..............................................................................................4-3
Analog Input Channel ............................................................................................4-4
Voltage Input................................................................................................4-4
Current Input ................................................................................................4-4
5
5.1
5.2
Model Designation .........................................................................................................5-1
Accessories ...................................................................................................................5-1
Options .........................................................................................................................5-2
6
6.1
6.2
Specifications..................................................................................................................6-1
Module Specifications ..................................................................................................6-1
Agency Approvals ........................................................................................................6-2
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Contents
SD39SCM-1
List of Tables
Table
Title
Page
1–1
Technical Support Center Contact Information ...............................................................1-7
2–1
2–2
2–3
2–4
2–5
2–6
2–7
Discrete Output Channel Cable Length ...........................................................................2-6
Discrete Power Supply Cable Length ..............................................................................2-6
SCM Serial Ports 1 and 2 Terminal Assignments..........................................................2-22
Receptacle Wire Sizes ...................................................................................................2-27
SCM Marshalled Termination Assembly Terminal Identification ................................2-28
SCM Local Termination Strip Terminal Identification .................................................2-30
Unterminated I/O Cable Assembly Wire Ident..............................................................2-31
3–1
Status LED Indications ....................................................................................................3-4
5–1
5–2
SCM Accessories.............................................................................................................5-1
SCM Options ...................................................................................................................5-2
6–1
SCM Specifications .........................................................................................................6-1
List of Illustrations
Figure
Title
1–1
1–2
Satellite Control Module and Associated Hardware........................................................1-3
SCM Basic I/O Wiring ....................................................................................................1-4
2–1
2–2
2–3
2–4
2–5
2–6
2–7
2–8
2–9
2–10
2–11
2–12
2–13
Marshalling Utility Panel...............................................................................................2-10
SCM Termination Strip and Interconnect I/O Cable Mounting ....................................2-13
SCM Marshalled Termination Assembly ......................................................................2-15
Marshalled Termination Assembly, Mounting and Removal ........................................2-15
SCM Marshalled Termination Assembly, Mounting Ear Installation ...........................2-16
Interconnect I/O Cable Assembly and Cable Keying ....................................................2-18
Module Keying Assignment and Installation.................................................................2-20
Serial Ports 1 and 2 Terminal Block ..............................................................................2-23
SCM Marshalled Termination Assembly Fuse Location...............................................2-24
Local SCM Termination Strip I/O Connection Examples .............................................2-26
Marshalled Termination Assembly I/O Connection Examples .....................................2-27
Using a Pin-type Crimp-on Connector ..........................................................................2-32
Security Switch and RAM Battery Locations................................................................2-35
5–1
Model Designation...........................................................................................................5-1
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Page
March 2005
SD39SCM-1
Contents
Significant Changes for Revision 3
Section
Description
Preface (Conventions and Symbols)— new section
1.2
Product Support—contact information updated.
2.2
I/O Wiring Considerations—DANGER warning added
3
Maintenance—DANGER warning added
March 2005
v
Contents
SD39SCM-1
PREFACE
Conventions and Symbols
The following symbols may appear in this manual and may be applied to the equipment. The reader
should become familiar with the symbols and their meaning. Symbols are provided to quickly alert the
user to safety related situations, issues, and text.
Symbol
DANGER
Meaning
Indicates an immediate hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury.
CAUTION
NOTICE
Important
Note
Indicates a potentially hazardous situation which, if not avoided, may result in
property damage.
Indicates a potential situation which, if not avoided, may result in an
undesirable result or state.
Identifies an action that should be taken to avoid an undesirable result or state.
Identifies additional information that should be read.
Electrical shock hazard. The included Warning text states that the danger of
electrical shock is present.
Electrical shock hazard. Indicated that the danger of electrical shock is
present.
Explosion hazard. Indicates that the danger of an explosion hazard exists.
Electrostatic discharge. The presence of this symbol indicates that
electrostatic discharge can damage the electronic assembly.
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March 2005
SD39SCM-1
Contents
Qualified Persons
The described equipment should be installed, configured, operated, and serviced only by qualified persons
thoroughly familiar with this publication. The current version, in Portable Document Format (PDF), is
available at http://sitescape.sea.siemens.com/.
For the purpose of this publication and product labels, a qualified person is one who is familiar with the
installation, construction, and operation of the equipment, and the involved hazards. In addition, he or she
has the following qualifications:
•
Is trained and authorized to energize, de-energize, clear, ground and tag circuits and equipment in
accordance with established safety practices.
•
Is trained in the proper care and use of protective equipment such as rubber gloves, hard hat, safety
glasses or face shields, flash clothing, etc., in accordance with established safety practices.
•
Is trained in rendering first aid.
Scope
This publication does not purport to cover all details or variations in equipment, nor to provide for every
possible contingency to be met in connection with installation, operation, or maintenance. Should further
information be desired or should particular problems arise which are not covered sufficiently for the
purchaser’s purposes, the matter should be referred to one of the support groups listed in the Product
Support section of this manual.
The contents of this manual shall not become part of or modify any prior or existing agreement,
commitment or relationship. The sales contract contains the entire obligation of Siemens. The warranty
contained in the contract between the parties is the sole warranty of Siemens. Any statements continued
herein do not create new warranties or modify the existing warranty.
General Warnings and Cautions
WARNING
This equipment contains hazardous voltages, and it has been certified for use in the hazardous locations
specified on the product nameplate and in the Model Designation and Specifications section. Death,
serious personal injury, or property damage can result if safety instructions are not followed. Only
qualified personnel should work on or around this equipment after becoming thoroughly familiar with all
warning, safety notices, and maintenance procedures contained herein. The successful and safe operation
of this equipment is dependent upon proper handling, installation, operation, and maintenance.
The perfect and safe operation of the equipment is conditional upon proper transport, proper storage,
installation and assembly, as well as, on careful operation and commissioning.
The equipment may be used only for the purposes specified in this publication.
March 2005
vii
Contents
SD39SCM-1
CAUTION
Electrostatic discharge can damage or cause the failure of semiconductor devices such as
integrated circuits and transistors. The symbol at right may appear on a circuit board or other
electronic assembly to indicate that special handling precautions are needed.
•
A properly grounded conductive wrist strap must be worn whenever an electronics
module or circuit board is handled or touched. A service kit with a wrist strap and static dissipative
mat is available from Siemens (PN15545-110). Equivalent kits are available from both mail order and
local electronic supply companies.
•
Electronic assemblies must be stored in anti-static protective bags when not installed in equipment.
„
viii
March 2005
SD39SCM-1
1
Introduction
Introduction
This Instruction provides installation and service information for the following Satellite Control Module
(SCM) hardware:
•
•
•
Model 39SCMNNNAAN Satelite Control Module
SCM Termination Strip
SCM Marshalled Termination Assembly
P/N 16258-51
P/N 16274-31
P/N 16291-31
This Instruction is divided into six major sections.
•
Section 1, Introduction—Contains a product description, product support information, and lists of
related literature.
•
Section 2, Installation—Describes environmental considerations and mechanical and electrical
installation.
•
Section 3, Maintenance—Consists of preventive maintenance, troubleshooting, and assembly
replacement procedures, and spare and replacement parts suggestions.
•
Section 4, Circuit Description—Contains a brief system level description of the SCM.
•
Section 5, Model Designation—Provides the model designation and tables of accessories and options.
•
Section 6, Specifications—Consists of mechanical, electrical, and environmental specifications.
1.1
Product Description
The Satellite Control Module (SCM), shown in Figure 1-1, is a member of the Satellite Control Series
(SCS) comprising the Satellite Control Module (SCM) and the Satellite Discrete Input (SDI) modules,
which are members of the APACS+ process control system’s family of modules. The SCM is an
intelligent (microprocessor-based), configurable, high performance control module with onboard analog
and discrete I/O that can communicate with an Advanced Control Module (ACM) via its IOBUS. In
addition, the SCM can perform control functions for a subsystem within a larger APACS+ system or act
as a stand-alone control module within a small APACS+ system. The SDI is controlled by the SCM,
providing additional AC or DC discrete input channels. Figure 1-2 illustrates basic I/O wiring to
termination assemblies.
March 2005
1-1
Introduction
SD39SCM-1
The SCM
•
minimizes hardware costs with 24 software-configurable channels (16 discrete and 8 analog).
•
responds at a rate of 10 msec input to output for regulating control and discrete logic applications.
•
includes a Soft-Fuse™ feature to protect individual discrete output channels against short circuit and
overload conditions caused by field wiring problems.
•
improves accuracy by performing floating point calculations in actual engineering units.
•
enables faster response to field problems by providing advanced diagnostics which identify potential
causes and recommended actions.
•
facilitates efficient and intuitive control strategy design by allowing three standard configuration
languages to be mixed within a single module.
•
facilitates easier field check-out by allowing the LEDs to indicate statuses without requiring a
configuration.
•
reduces servicing time by allowing the module to be inserted or removed while powered without
disturbing field wiring.
•
isolates field faults by electrically isolating all I/O channels from the backplane and ground.
1.1.1
Soft-Fuse Feature
The Soft-Fuse feature protects the SCM’s discrete channels against over-current conditions caused by
field wiring and field device problems. Each channel contains an over-current detection circuit that
switches the output off before damage can occur. Diagnostics report the “blown” fuse channel and permit
clearing the blown fuse from an operator interface. The Soft-Fuse feature provides equivalent protection
to individual hard fuses, permits remote on-line “repair,” and eliminates the need for stocking spare fuses.
1.1.2
Diagnostics
The SCM is designed to provide years of trouble-free service. However, in the event of unexpected
operation, the SCM is equipped with extensive diagnostics to detect the situation and facilitate a quick
resolution. The goals of these diagnostics are to
•
•
1-2
notify the appropriate personnel of a module malfunction or wiring error
and
perform automatic shutdown of a channel or a module if a dangerous fault is detected (for fail safe
operation).
March 2005
SD39SCM-1
Introduction
There are two types of SCM diagnostics: those that cover individual channels and those that cover the
module as a whole. Each SCM discrete channel can detect the following faults:
•
•
•
•
Input channel failed
Output channel failed ON
Output channel failed OFF
Output channel tripped fuse
Each SCM analog channel can detect the following faults:
•
•
•
•
Input channel wiring open
Input channel wiring shorted
Output channel failed ON
Output channel failed OFF
Figure 1–1 Satellite Control Module and Associated Hardware
March 2005
1-3
Introduction
SD39SCM-1
Figure 1–2 SCM Basic I/O Wiring
The diagnostics for overall module performance are too numerous to list in their entirety but can be
categorized as follows:
•
•
•
•
•
•
Power supply diagnostics
Over/under temperature diagnostics
Memory diagnostics
Communication diagnostics
Watchdog reset diagnostics
Miscellaneous diagnostics
The SCM is notified and will act on problems detected within itself or by its I/O modules. It also
performs diagnostic routines that verify the integrity of crucial circuitry. The SCM maintains a log of
current and historical errors for it and the SDI that can be reviewed using the Diagnostic Logger Utility or
the ProcessSuite™ 4-mation™ configuration software. In addition, errors are indicated by the module’s
LED indicators.
1-4
March 2005
SD39SCM-1
1.1.3
Introduction
LED Indicators
The SCM’s LEDs support local troubleshooting without an operator interface. The SCM includes two
LEDs that indicate the following module statuses:
•
•
•
•
•
•
•
•
Module OK
Channel(s) faulted
Module faulted
Module unconfigured
IOBUS communication failed
Module failed
Module active
Module inactive
1.1.4
Configuration
Like all APACS+ modules, the SCM is software-configured using the 4-mation software. The
configuration is loaded and stored in the control module’s non-volatile memory. This approach to
configuration allows the module to be removed and replaced on-line without the need for reconfiguration.
During configuration, 4-mation is used to assign a type to each channel (input or output). In addition, for
some channels, an additional parameter can be defined. This parameter is:
Channel Diagnostics - The channel’s diagnostics, such as Read Back, can be enabled or disabled.
1.1.5
Terminations
The SCM’s field I/O can be terminated locally or remotely according to user needs and preferences. Local
terminations reside directly below the SCM. Marshalled Termination Assemblies or Rail Termination
Assemblies provide for terminations up to 100 feet (30.5 m) away from the SCM. Figure 1-2 is an
example of the wiring used for these options.
March 2005
1-5
Introduction
1.2
SD39SCM-1
Product Support
Product support can be obtained from a Technical Support Center (TSC). Each regional TSC is a
customer service center that provides direct telephone support on technical issues related to the
functionality, application, and integration of all products supplied by Siemens. Regional TSC contact
information is provided in Table 1–1. Your regional TSC is the first place you should call when seeking
product support information. When calling, it is helpful to have the following information ready:
•
Caller name and company name
•
Product part number or model number and version
•
If there is a problem with product operation:
- Whether the problem is intermittent
- The steps performed before the problem occurred
- Any error messages or LED indications displayed
- Installation environment
Product documentation is now located in the Library forum of the Process Automation User Connection
at: http://sitescape.sea.siemens.com/. The Process Automation User Connection is a secure site.
Registration is open to all verified users of Siemens process automation systems. If you are not already,
and would like to become a member, please visit our Process Automation User Connection web page at:
http://www.sea.siemens.com/process/support/papauc.html
Contained within the Process Automation User Connection is the APACS+/QUADLOG Secure Site at:
http://sitescape.sea.siemens.com/forum/aca-1/dispatch.cgi/f.apacsquadlo forum. This site is only open to
customers with an active service agreement. It contains all service manuals, service memos, service notes,
configuration manuals, etc. for the APACS+ and QUADLOG family of products. If you are experiencing
technical difficulties with the site, please contact SiteScape technical support at: toll free 1-877-234-1122
(US) or 1-513-336-1474.
1-6
March 2005
SD39SCM-1
Introduction
Table 1–1 Technical Support Center Contact Information
Hours of Operation:
Telephone:
USA
E-mail:
Fax:
In-house
Repair Service:
Secure Web Site:
Global
8 a.m. to 5 p.m. eastern time
Monday – Friday (except holidays)
+1 800 333 7421
[email protected]
+1 215 283 6343
+1 215 646-7400 ext. 4762
www.sea.siemens.com/process/product/papao.html
Please check the global Siemens Automation and Drives support page:
http://www4.ad.siemens.de
1.3
Related Literature
The following literature should be available when performing the SCM installation.
•
•
•
•
•
•
•
•
•
MODULRAC Installation and Service Instruction (SD39MODULRAC-1)
SIXRAC Installation and Service Instruction (SD39SIXRAC-1)
UNIRAC Installation and Service Instruction (SD39UNIRAC-1)
MODULPAC 1000 Installation and Service Instruction (SD39MODULPAC-1)
MODULPAC 2000 Installation and Service Instruction (SD39MODULPAC-2)
Power Supply Rack (POWERAC) Installation and Service Instruction (SD39PSR-1)
Power Distribution Assembly (PDA) Installation and Service Instruction (SD39PDA-1)
APACS+ Grounding Practices (SD39GND-1)
Using 4-mation Version 4.10 or Higher with the Satellite Control Module (CG39SCM-1)
„
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1-7
SD39SCM-1
2
Installation
Installation
This section describes the following:
•
Determining the maximum length of field I/O wiring
•
Installation of the Satellite Control Module (SCM) and associated hardware
•
Connection of field wiring
Review and complete the steps in section 2.2 and 2.3 before proceeding with the SCM installation.
IMPORTANT
The SCM installation should be in accordance with the National
Electrical Code (NEC) and other applicable construction and electrical
codes.
The Satellite Control Module shall not be used in any manner except
as specified by Siemens.
2.1
Hardware Identification
The Satellite Control Module is identified by the letters “SCM” on the bezel and by two nameplate
labels: a large label, shown below, located on the tracking plate (left side of SCM in Figure 1-1), and
a small label inside the bezel battery compartment. Access to the battery compartment is by
loosening a captive screw in the hinged compartment cover. Both labels contain the module’s Model
Designation, Part Number, ROM Version, and Serial Number. The larger label also shows the
current and voltage requirements of the module.
MODEL 39SCMxxxxxN
ROM VERSION x.xx
March 2005
POWER 24 VDC
0.4 A MAX
I/O SIGNAL 24 VDC
P/N 16258-51/xx
S/N xxxxxxxx
2-1
Installation
2.1.1
SD39SCM-1
Termination Strip and Marshalled Termination Assembly Identification
The SCM Termination Strip is identified by information silkscreened on the component side of the board.
SCM
SATELLITE CONTROL
MODULE
MOORE PRODUCTS CO.
TERMINATION STRIP
PN 16274-31
The SCM Marshalled Termination Assembly is identified by information silkscreened on the component
side of the board.
SCM
SATELLITE CONTROL
MODULE
MOORE PRODUCTS CO.
MARSHALLED TERMINATION
ASSEMBLY
PN 16291-31
2.2
I/O Wiring Considerations
Figure 1-2 shows typical local and marshalled I/O wiring. I/O connections between field devices and
either local or marshalled terminations are wired with user-supplied cable. This cabling is referred to as
“hook-up” I/O wire.
DANGER
Electrical shock hazard
Explosion hazard
Will cause death, serious injury or property damage
•
•
•
•
2-2
Remove power from all wires and terminals and verify that there
are no hazardous voltages before working on equipment.
In potentially hazardous atmosphere, remove power from
equipment before connecting or disconnecting power, signal, or
other circuit, or extracting/inserting module.
Observe all pertinent regulations regarding installation in
hazardous area.
Ensure all devices are rated for hazardous (classified) locations.
March 2005
SD39SCM-1
Installation
When marshalled termination is employed, an Interconnect I/O Cable Assembly connects the SCM
Marshalled Termination Assembly to the SCM in the MODULRAC, SIXRAC, or UNIRAC.
Interconnect I/O Cable Assembly standard lengths and part numbers are listed in section 5.
An Interconnect I/O Cable length must be determined before proceeding with the installation of hardware.
2.2.1
Local Termination Hook-Up I/O Wiring
Subsections 2.2.1.1 to 2.2.1.4 provide guidelines for determining the allowable length of hook-up I/O
wiring.
2.2.1.1 Discrete Input Channels
I/O Wire Length - 3750 m (12300 ft.) maximum combined lengths of Channel (+) and Return (-)
#18AWG hook-up I/O wires.
2.2.1.2 Discrete Output Channels
I/O Wire Length - The maximum combined lengths of Channel (+) and Return (-) #18AWG hook-up
I/O wires can be determined from Equation 1.
Equation 1:
0.875V
L(ft.) = ----------------------------------Iload(0.0071Ω/ft.)
Where:
0.875V = Allowable voltage drop in hook-up I/O wires
L(ft.) = Maximum allowable combined feeder and return hook-up wire length
0.0071Ω/ft. = Ohmic value per foot of #18AWG hook-up wire
Iload = Current draw in amperes of the field device. Refer to the literature provided by the
device’s manufacturer.
2.2.1.3 Local Termination Discrete I/O Power Supply
Wire Length - The maximum combined lengths of Power (+) and Return (-) #18AWG hook-up I/O wires
can be determined from Equation 2.
Equation 2:
0.875V
L(ft.) = ----------------------------------Iload(0.0071Ω/ft.)
Where:
March 2005
2-3
Installation
SD39SCM-1
0.875V = Allowable voltage drop in feeder and return power supply wires
L(ft.) = Maximum allowable feeder and return hook-up wire length
0.0071Ω/ft. = Ohmic value per foot of #18AWG hook-up wire
Itotalload = Summation of load currents of all configured Discrete Output and Analog channels.
2-4
March 2005
SD39SCM-1
Installation
2.2.1.4 Analog Channels
The analog section is designed for a total compliance of 20V. The following are assumed:
•
•
•
•
A 12V compliance for the transducer
A 347 ohm intrinsic safety barrier
A maximum current of 20 mA
A maximum allowable feeder and return hook-up wire resistance of 53 ohms
The above assumptions yield:
I/O Wire Length - 2275 m (7465 ft.) maximum combined lengths of Channel (+) and Return (-) #18AWG
hook-up I/O wires.
2.2.2
Marshalled Termination Interconnect I/O Cable
When marshalled termination is employed, the output channel voltage delivered to a field device and the
length of the Interconnect I/O Cable and hook-up I/O wiring must be determined. These maximum cable
lengths are dependent upon which of the SCM’s discrete channels are configured as inputs or outputs.
The following subsections are applicable to each SCM and its Marshalled Termination Assembly.
CAUTION
The DC+ terminals adjacent to the I/O terminals on the Marshalled
Termination Assembly are NOT connected directly to the external power
supply DC+ power terminal. All such DC+ terminals are common and
connect to a single 300 mA fuse. The input to the fuse connects to the
DC+ power terminal and protects field wiring in the event of a short
circuit. The maximum combined load from the channel DC+ terminals
should not exceed 300 mA.
2.2.2.1 Discrete Input Channels
The current through the Interconnect I/O cable is negligible; therefore, the values in section 2.2.1.1 are
applicable.
2.2.2.2 Discrete Output Channels
The maximum hook-up cable lengths listed in Table 2-1 apply for a 600 mA load and a voltage of 21.6V
at the field device using a 24V power supply.
March 2005
2-5
Installation
SD39SCM-1
Table 2–1 Discrete Output Channel Cable Length
INTERCONNECT I/O CABLE LENGTH
COMBINED LENGTHS OF CHANNEL(+)
AND RETURN (-) #18AWG HOOK-UP WIRE
3 Meters (10 feet)
8 Meters (26.2 feet)
15 Meters (49.2 feet)
30 Meters (98.4 feet)
56.5 m (185 ft.) maximum
47 m (155 ft.) maximum
32 m (105 ft.) maximum
1.6 m (5 ft.) maximum
2.2.2.3 Marshalled Termination Discrete I/O Power Supply
The maximum hook-up cable lengths listed in Table 2-2 apply for a 9.6A total load and a voltage of
21.6V at the field device using a 24V power supply.
Table 2–2 Discrete Power Supply Cable Length
INTERCONNECT I/O CABLE LENGTH
COMBINED LENGTHS AND SIZE OF
CHANNEL (+) AND RETURN (-)
HOOK-UP WIRE
3 m (9.8 ft.)
8 m (26.2 ft.)
15 m (49.2 ft.) See Note 1.
30 m (98.4 ft.) See Note 2.
7.2 m (24 ft.) # 14 AWG maximum
2.8 m (9.0 ft.) #14 AWG maximum
3 m (9.8 ft.) #10 AWG
1.5 m (4.9 ft. ) #10 AWG
Notes:
1. 15m Interconnect I/O Cable - The total current for all discrete channels should not exceed 7.4A.
2. 30m Interconnect I/O Cable - The total current for all discrete channels should not exceed 3.7A.
2.2.2.4 Analog Channels
Using the criteria established in section 2.2.1.4 and compensating for the 2.82 ohm resistance of a 30 m
(98.4 ft.) Interconnect I/O cable yields:
I/O Wire Length - 2155 m (7070 ft.) maximum combined lengths of Channel (+) and Return (-) #18AWG
hook-up I/O wires attached to the Marshalled Termination Assembly.
2-6
March 2005
SD39SCM-1
2.3
Installation
Installation Preparation
1. Install SIXRACs, UNIRACs, or MODULRACs with Local Termination Panels (for local termination
only) in MODULPACs or cabinets where the SCMs are to be installed. The SCMs should not be
installed in their racks at this time; however, the rack slot numbers for the SCMs should be known.
Note that in determining a rack slot for an SCM:
•
Only Satellite Series client modules installed in slots to the right of an SCM (higher slot numbers)
are slaved to that SCM.
•
No slots can be between an SCM and any of its slave I/O modules.
•
Use of multiple SCMs is supported only in MODULRACs identified by part number/rev number
16114-171/05 or higher. A MODULRAC with revision number 04 and lower will support only
one SCM. SIXRACs do not have such a restriction.
2. Determine maximum length of I/O wiring. According to the guidelines in section 2.2.
3. If local I/O termination is employed, tag all I/O cables and route them into the cabinet. They should
be ready for cable end preparation and connection to the SCM Termination Strip.
4. If remote termination is employed, tag all I/O cables and route them into the marshalling cabinet.
Cables should be ready for preparation and connection to the SCM Marshalled Termination
Assemblies.
Also, route the Interconnect I/O Cable Assembly (or Unterminated I/O cable) between the
marshalling cabinet and the cabinet containing the rack. Refer to Figure 1-1; J1 will be installed in
the rack and P2 will connect to the SCM Marshalled Termination Assembly in the marshalling
cabinet.
5
Select the needed termination assembly:
•
•
Local I/O termination—SCM Termination Strip
Marshalled (remote) termination—SCM Marshalled Termination Assembly
IMPORTANT
Termination assemblies shall be accessible to maintenance personnel
only; therefore, termination assemblies are to be mounted in enclosures
requiring a key or special tool to gain access.
6. It is recommended that a P/N 16114-65 Power Distribution Assembly (PDA), or other user-supplied
similar device, be used to provide power disconnection and additional fusing to the I/O power supply
and/or module rack operating power source. The PDA should be located in the same enclosure as
the I/O power supply and/or module rack power source.
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Installation
SD39SCM-1
7. A P/N 16114-105 PSR4A (POWERAC rack-mounted power supply) or other user-supplied I/O
power supply is required for all SCM applications. This supply powers the user’s field I/O devices
and SCM channel circuitry, and is sized by the user. The user-supplied power supply should have
appropriate safety ratings. Refer to the Power Supply Rack (POWERAC) Installation and Service
Instruction (SD39PSR-1) for installation details.
8. Fabricate the AC power cable that connects the I/O Power Supply to a Power Distribution Assembly
(PDA). The AC power input cable connecting the PDA to the local breaker box (power mains) is
also user-fabricated. Refer to the Power Distribution Assembly (PDA) Installation and Service
Instruction (SD39PDA-1) for details.
9. If the module rack (MODULRAC, SIXRAC, or UNIRAC in which the SCM is installed) is to receive
operating power from a POWERAC or other user-supplied power supply , it is recommended that the
power supply be mounted in the same enclosure as the SCM. Alternatively, an enclosure housing the
power supplies can be attached to, or sit next to, the enclosure that houses the SCM. This ensures a
short power cable run to the module rack.
10. When marshalled I/O termination is employed, both SDM Marshalled Termination Assemblies and
I/O power supplies can be mounted to the same Utility Panel. Typically, four SCM Marshalled
Termination Assemblies and two I/O power supplies can be mounted on a Utility Panel.
11. When local I/O termination is employed, both the SCM Termination Strip and POWERAC can be
mounted in a MODULPAC enclosure, provided that only one MODULRAC and Local Termination
Panel are installed.
12. User-supplied I/O power supplies can be mounted to a Utility Panel (P/N 16114-12) and housed in a
separate MODULPAC or user-supplied cabinet. The enclosure housing the power supplies should be
attached to, or sit next to, the enclosure that houses the SCM Termination Strips or SCM Marshalled
Termination Assemblies. This ensures a short power cable run to the termination assemblies. Utility
Panel dimensions are provided in Figure 2-1. Design the power supply mounting layout and drill and
tap all mounting holes.
2.4
•
Environmental Considerations
Many industrial environments create severe operating conditions. The conditions at each SCM
location must be within the specifications stated in section 6.0.
CAUTION
Exceeding the specified operating temperature limits can adversely affect
performance and may cause damage. Air temperature should be
periodically checked to ensure that this specification is not being
exceeded.
2-8
March 2005
SD39SCM-1
Installation
•
To ensure reliable data communications, it would be prudent to locate APACS+ modules (enclosures)
away from sources of interference, such as high current electrical equipment, which emit strong
electromagnetic fields and switching transients.
•
Industrial environments often contain particulate, liquid, and gaseous contaminants. Particulate
matter, usually dust and dirt, is abrasive and can cause intermittent contact in connectors associated
with circuit assemblies. A layer of dust on circuit boards will interfere with semiconductor heat
dissipation. Liquid and gaseous contaminants can have a corrosive effect on metal, rubber, plastic
and circuit board components. Extended exposure to this environment may result in equipment
malfunction.
•
To reduce contaminant related equipment malfunctions:
1. Identify contaminants and implement methods to reduce their presence.
2. When cleaning equipment and surrounding area, especially the floor, either vacuum away all dust
and dirt or use a dampened rag or mop.
3. Clean or replace all air conditioning filters, room air filters, and equipment filters regularly.
4. Inform personnel with access to APACS+ modules of the need for site cleanliness.
March 2005
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Installation
SD39SCM-1
Figure 2–1 Marshalling Utility Panel
2-10
March 2005
SD39SCM-1
2.5
Installation
Equipment Delivery and Handling
The following subsections provide information of interest to shipping, receiving, and warehouse
personnel.
2.5.1
Predelivery Test
An SCM is fully tested and inspected to ensure proper operation. If the SCM is ordered factory installed
in an enclosure, the SCM is tested as part of the APACS system.
2.5.2
Factory Shipment
SCMs to be installed by the user are placed in static shielding bags and packaged for shipment.
Accessories are packaged separately. If the SCM is ordered factory installed in an enclosure, the
enclosure is bolted to a pallet and wrapped for protection during shipment.
2.5.3
Receipt of Shipment
All cartons should be inspected at the time of their delivery for possible external damage. Any visible
damage should be immediately recorded on the carrier’s copy of the delivery slip.
Each carton should be carefully unpacked and its contents checked against the enclosed packing list. At
the same time, each item should be inspected for hidden damage that may have been accompanied by
exterior carton damage. If it is found that some items have been damaged or are missing, refer to section
2.5.4 or 2.5.5 and notify Siemens immediately, providing full details. In addition, damages must be
reported to the carrier with a request for their on-site inspection of the damaged item and its shipping
carton.
2.5.4
Equipment Handling
The SCM is completely enclosed and may be safely handled without undertaking special ESD
(electrostatic discharge) handling procedures provided the battery compartment door is closed and
secured. DO NOT touch the connector pins on the back of the module. Handle the module carefully and
do not subject it to excessive shock or vibration.
CAUTION
A grounded wrist strap must be used to provide ESD protection
whenever the battery compartment door is opened to access the backup
battery or Security Enable switch.
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2-11
Installation
2.5.5
SD39SCM-1
Equipment Storage
The storage temperature and humidity parameters of section 6.0 must be met for storage of an SCM.
When the SCM is not powered as in storage, the backup battery must be disabled. An SCM removed
from storage for use must be prepared as described in section 2.9.8.
IMPORTANT
Prior to applying power to the SCM, enable the backup battery.
2.6
SCM Termination Strip Installation
When local I/O termination is to be employed, an SCM Termination Strip must be installed at the rack
slot location of each SCM mounted in a module rack (MODULRAC or SIXRAC). A Local Termination
Panel must also be installed. Refer to Figure 2-2 and the following mounting instructions:
1. Consult user’s documentation and note the slot locations assigned to each SCM in a module rack.
IMPORTANT
Use of multiple SCMs is supported only in MODULRACs identified by
part number/rev number 16114-171/05 or higher. A MODULRAC with
a revision number 04 and lower can support only one SCM. SIXRACs
do not have such a restriction.
2. Note the following on the module rack or an SCM Termination Strip:
2-12
•
On the module rack, locate and identify the extruded spacer to which the lower edge of the
backplane is mounted. Note that the bottom of the extruded spacer is grooved. The top edge of
an SCM Termination Strip will rest in this groove.
•
Identify ten alignment pins located below the module rack frame that span the width of the
module rack panel. One of these pins will engage a hole located on the termination strip above
the “Moore” logo. The left-most pin corresponds to module rack slot #1.
•
The SCM Termination Strip’s captive mounting screws can be seen projecting from the bottom of
the plastic extrusion panel.
March 2005
SD39SCM-1
Installation
3. Mount each SCM Termination Strip at its assigned location as follows:
1) At the SCM slot, angle the top edge of the strip toward the backplane’s extruded spacer and insert
the tip of the strip in the spacer’s groove.
2) Slide the strip in the groove until it is vertically and horizontally aligned with the appropriate pin.
3) Carefully lower the strip and engage the pin with the extrusion and board pin mounting hole.
Firmly push down to seat the strip on the pin. When the strip is properly seated, the pin will be
flush with, or project slightly above, the top surface of the strip.
4) Tighten the strip’s captive mounting screws, which are automatically aligned with their respective
panel mounting holes.
Figure 2–2 SCM Termination Strip and Interconnect I/O Cable Mounting
2.7
SCM Marshalled Termination Assembly and I/O Cable Installation
The following subsections describe installing the SCM Marshalled Termination Assembly to either a DIN
rail or a flat surface, and installing and connecting the Interconnect I/O Cable Assembly.
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Installation
2.7.1
SD39SCM-1
Marshalled Termination Assembly Installation to DIN Rail
The SCM Marshalled Termination Assembly (MTA), shown in Figure 2-3, snaps onto a user-supplied
DIN rail. The suggested types of DIN rails are:
•
•
Preferred: Top hat profile EN 50 022-35 mm X 7.5 mm or EN 50 022-35 mm X 15 mm
Alternate: G-profile EN 50 035-G 32 mm
Refer to the following to install an MTA to a blank Utility Panel, a Marshalling Utility Panel, or a userfabricated panel.
1. For a blank Utility Panel or a user-fabricated panel, mount user-supplied DIN Rails and wire duct to
the Panel.
1) Determine the mounting layout of MTAs and wire duct. Refer to the Utility Panel dimensions in
Figure 2-1 and MTA dimensions in Figure 2-3.
NOTE
MTA dimensions can vary with type. Refer to the Installation and
Service Instruction for each I/O type to be installed.
2) Drill and tap DIN rail mounting holes in the Utility Panel.
3) Remove all burrs and metal debris and clean the panel before proceeding.
2. Mount the Marshalling Utility Panel, blank Utility Panel or user-fabricated panel in a MODULPAC
marshalling cabinet or user-supplied cabinet. Refer to MODULPAC 1000 and 2000 Installation and
Service Instructions (SD39MODULPAC-1 and SD39MODULPAC-2) for installation of the blank
Utility Panel or Marshalling Utility Panel.
3. Retrieve the MTA to be mounted, including a supplied bag of SCM labels and a Cable Keying Kit
(P/N 16056-435). Temporarily set aside the Cable Keying Kit.
1) Consult user documentation and note the rack address number (1 to 16) and slot number (1 to 10)
assigned to the SCM.
2) Retrieve an SCM label and record the rack and slot numbers on the label (see Figure 1-1). Save
the remaining labels for use in section 2.7.3.
4. Refer to Figure 1-1 and attach the SCM label adjacent to connector J1 (also shown in Figure 2-3).
5. Ensure that J1 and J2 are factory keyed according to the pattern shown in Figure 2-3.
6. Refer to Figure 2-4 to mount the SCM Marshalled Termination Assembly to a DIN rail.
2-14
March 2005
SD39SCM-1
Installation
Figure 2–3 SCM Marshalled Termination Assembly
Figure 2–4 Marshalled Termination Assembly, Mounting and Removal
March 2005
2-15
Installation
2.7.2
SD39SCM-1
Optional (Flat Surface) Marshalled Termination Assembly Installation
The removal of the DIN rail mounting feet from the Marshalled Termination Assembly (MTA), in
conjunction with the installation of four Mounting Ears (accessory item), permits the MTA to be flat
mounted to a panel. Four P/N 16056-562 (single piece) Mounting Ears are required per MTA (see Table
5-2).
Refer to Figure 2-5 and the following installation procedure:
1. At one end of the MTA, remove the three end cap securing screws from the card holder end cap.
Remove and set aside the end cap.
2. Slide the DIN rail mounting feet from the grooves in the bottom of the MTA card holder. Discard the
mounting feet. Re-install the just removed end cap.
3. Retrieve four Mounting Ears and insert them in the appropriate mounting holes provided in the end
caps as illustrated in Figure 2-5.
4. Use the MTA as a template to mark the location of the mounting ear holes on the surface of the panel.
Typical mounting screw size is M4, or users can select another size. After drilling or punching the
holes, the holes should be threaded. Refer to Figure 2-3 for MTA dimensions.
Figure 2–5 SCM Marshalled Termination Assembly, Mounting Ear Installation
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March 2005
SD39SCM-1
2.7.3
Installation
Interconnect I/O Cable Installation
An Interconnect I/O Cable is shown in Figure 2-6. It is used to connect an SCM to an SCM Marshalled
Termination Assembly (MTA) when remote I/O termination is employed. The cable-to-module
connector (J1) is installed at the MODULRAC, SIXRAC, or UNIRAC slot location of an SCM.
It is assumed that as part of the site preparation procedure all tagged Interconnect I/O Cables have been
routed and pulled into their respective cabinets and are ready for connection. MTAs should already be
installed in the marshalling cabinet (see section 2.7.1) and be ready for cable connection.
An Unterminated I/O Cable is installed similarly at the rack; however, terminations in the marshalling
cabinet are user-supplied.
The following procedure is applicable to MODULRACs and SIXRACs. To install an Interconnect I/O
Cable to a UNIRAC, refer to the UNIRAC Installation and Service Instruction (SD39UNIRAC-1).
Refer to Figures 2-2 and 2-6 and perform the following:
1. Note the following on the cable’s molded J1 connector:
•
The bottom face of the molded connector has a “pin mounting hole” located above a captive
mounting screw. This hole engages one of the MODULRAC or SIXRAC panel’s alignment pins.
•
The top edge of the molded J1 connector will rest in the groove of the backplane’s extruded
spacer
2. Consult user’s documentation and note the MODULNET node address (if applicable), rack address
number (1 to 16) and slot number (1 to 10) assigned to the SCM. The molded J1 connector will be
mounted at this slot.
IMPORTANT
Use of multiple SCMs is supported only in MODULRACs identified by
part number/rev number 16114-171/05 or higher. A MODULRAC with
a revision number 04 and lower can support only one SCM. SIXRACs
do not have such a restriction.
3. Install the molded J1 connector at its assigned location as follows:
1) Angle the top edge of the molded connector toward the backplane’s extruded spacer and insert its
tip in the spacer’s groove.
2) Slide the connector in the groove until it is vertically and horizontally aligned with the
appropriate pin (slot #).
3) Carefully lower the molded connector and engage the alignment pin with the connector’s pin
mounting hole. Firmly push down to seat the connector on the pin. When the connector is
properly seated, the pin will be flush with or project slightly above the connector’s face.
March 2005
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Installation
SD39SCM-1
4) Tighten the connector’s captive mounting screw, which is automatically aligned with its
respective panel mounting hole.
5) Get two labels from the bag of SCM labels. Record on each label the appropriate numbers noted
in the above step 2 (see Figure 1-1). Attach one label to the molded J1 connector (see Figure 11). At the molded P2 connector end of the cable, attach the second label.
4. Key cable connector P2.
1) Get the P/N 16056-435 Cable Keying Kit set aside in step 3 of section 2.7.1. The kit contains
keying pins and an Instruction.
2) Refer to Figure 2-6 for the assigned keying pattern and install the pins in accordance with the
supplied Instruction.
5. Connect the opposite end of the I/O Cable Assembly to its respective I/O termination assembly.
Perform one of the following depending upon I/O Cable type.
•
Interconnect I/O Cable Assembly (P2 installed)
Connect cable connector P2 (Figure 2-5) to the A (J1) connector on the Marshalled Termination
Assembly (Figure 1-1). A keying pin projecting from the face of P2 ensures a correct mating.
Press P2 firmly onto J1 and torque the securing screw on P2’s connector shell to 50 inch-pounds
max.
•
Unterminated I/O Interconnect Cable Assembly (P2 not installed)
Refer to section 2.9.5 for color code identification and function of each unterminated wire. Refer
to user wiring diagrams to make the proper cable connections to the termination assembly.
Figure 2–6 Interconnect I/O Cable Assembly and Cable Keying
2-18
March 2005
SD39SCM-1
2.8
Installation
SCM Installation
Modules are shipped individually packaged in protective, sealed, static shielding bags. Refer to section
2.5.5 for module handling considerations.
Each MODULRAC, SIXRAC, or UNIRAC slot and each module should be keyed to prevent accidental
installation of a module into an incompatible slot, which may impair system performance or damage
equipment or wiring. Keying is highly recommended; see Figure 2-6.
•
Modules are keyed at the factory. The keying pattern is unique to each module type [e.g. Critical
Control Module (CCM) ]. See Figure 2-7 for the SCM keying pattern.
•
A factory-assembled MODULRAC or SIXRAC is keyed at the factory. A user-assembled
MODULRAC or SIXRAC is keyed by the user according to the module type assigned to each slot.
This keying pattern complements the module’s keying pattern. Stop plugs are supplied with the
MODULRAC and, SIXRAC.
•
When adding a module to a rack, be sure to key the rack slot.
Section 2.8.1 describes keying an unkeyed module and keying a rack slot. Section 2.8.2 describes
installing the module in the rack.
2.8.1
Module Rack Mechanical Keying
Perform the following to key the appropriate rack (MODULRAC, SIXRAC, or UNIRAC).
1. Get the Keying Kit supplied with the module rack.
2. Refer to Figure 2-7 and note the rack keying pattern. Also, locate the rack’s top and bottom rails.
3. Press the stop plugs into the holes identified by the solid dots.
March 2005
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Installation
SD39SCM-1
Figure 2–7 Module Keying Assignment and Installation
2-20
March 2005
SD39SCM-1
2.8.2
Installation
Module Installation
Refer to Figure 2-7 and the following installation instructions:
1. Refer to user’s documentation for correct module slot number and location of the SCM Transition
Strip or I/O Cable Assembly.
IMPORTANT
Use of multiple SCMs is supported only in MODULRACs identified by
part number/rev number 16114-171/05 or higher. A MODULRAC with
a revision number 04 and lower can support only one SCM. SIXRACs
do not have such a restriction.
2. Remove the SCM from its static shielding bag and ensure that the module is keyed. Also, check the
rack slot to be sure it is keyed. Refer to section 2.8.1 to install keying.
3. Insert the module in the assigned rack slot. Use uniform pressure to firmly seat the module in the
backplane and transition board connectors. If the module does not seat, check the keying. A properly
seated module will have the rear of its bezel flush against the rack’s front rails. A keyed module that
is not matched to a slot will not engage the backplane or transition board connectors or seat flush
against the rack’s front rails.
4. Pull open the bezel’s pivoting top and bottom handles to expose the slotted captive mounting screws
and secure the module to the top and bottom rails. Close the bezel’s handles when finished.
CAUTION
Do not use the captive mounting screws to seat the module. Damage to the bezel can result.
2.9
Electrical Installation
This section describes power supply and field I/O connections to an SCM Termination Strip or SCM
Marshalled Termination Assembly. It is assumed that tagged field I/O wires have been pulled into the
cabinet and are ready for preparation and connection. Connection of the SCM’s RAM battery and setting
of the security switch are also covered.
March 2005
2-21
Installation
2.9.1
SD39SCM-1
Serial Port Cables
Serial Ports 1 and 2 are RS-232 industrial serial communication ports with a software selected
communications rate of 300 to 38,400 baud. They provide an interface to the SCM for serial applications
and are located on the front bezel of the SCM (See Figure 1-1). The serial ports terminal block is a plugin type block and can be removed from the front of the SCM to facilitate wiring. Serial port cables are
fabricated by the user.
The serial port terminal block receptacles accept wire sizes from #14 AWG to #22 AWG.
Table 2-3 lists serial port terminal descriptions and Figure 2-8 illustrates the terminal block.
Table 2–3 SCM Serial Ports 1 and 2 Terminal Assignments
2-22
TERMINAL DESCRIPTION
NUMBER
1 (Port 1)
Transmitted Data (TD)
DIRECTION
2 (Port 1)
Received Data (RD)
Input
3 (Port 1)
Request To Send (RTS)
Output
4 (Port 1)
Clear To Send (CTS)
Input
5 (Port 1)
Data Terminal Ready (DTR)
6 (Port 1)
Data Carrier Detect (DCD)
7 (Port 1)
Signal Ground (Common Return)
8 (Port 2)
Transmitted Data (TD)
Output
9 (Port 2)
Received Data (RD
Input
10 (Port 2)
Request To Send (RTS)
Output
11 (Port 2)
Clear To Send (CTS)
Input
12 (Port 2)
Signal Ground (Common Return)
Output
Input
March 2005
SD39SCM-1
Installation
Figure 2–8 Serial Ports 1 and 2 Terminal Block
2.9.2
Marshalled Termination Assembly Discrete I/O Power Fuse
As shown in Figure 2-8, the SCM Marshalled Termination Assembly contains a field replaceable fuse
(“DISCRETE INPUT POWER FUSE”) whose purpose is to protect I/O wiring in the event of a short
circuit. A green LED (“FUSE OK WHEN LIT”) indicates the status of the fuse.
Figure 2-9 illustrates that the DC+ terminals adjacent to the I/O terminals on the SCM Marshalled
Termination Assembly are NOT connected directly to the external power supply DC+ terminal block. All
such DC+ terminals are common and connected to a single 300 mA fuse. The fuse is in series with the
output of the DC+ power terminal block and protects field wiring in the event of a short circuit. The fuse
part number and specification is listed below.
Siemens P/N 7447-211- 300 mA, 20 mm 250VAC slowblo cartridge type
CAUTION
The maximum combined load from the channel DC+ terminals should
not exceed 300 mA.
March 2005
2-23
Installation
SD39SCM-1
Figure 2–9 SCM Marshalled Termination Assembly Fuse Location
2-24
March 2005
SD39SCM-1
2.9.3
Installation
User-Supplied Discrete I/O Power Supply Connections
Refer to Figures 2-10 and 2-11 for examples of discrete I/O power supply wiring and the following:
•
Refer to section 2.2.1.3 for the allowable length of cable when local termination is used.
•
Refer to section 2.2.2.3 for the allowable length of cable when marshalled termination is used.
•
The DC+ and COM wire receptacles located on the SCM Termination Strip accept wire sizes from
#22 AWG to #14 AWG.
•
The DC+ and COM wire receptacles located on the SCM Marshalled Termination Assembly accept
wire sizes from #22 AWG to #10 AWG.
The recommended wire size is #18 AWG stranded. The power supply cable is user-fabricated.
March 2005
2-25
Installation
SD39SCM-1
Figure 2–10 Local SCM Termination Strip I/O Connection Examples
2-26
March 2005
SD39SCM-1
Installation
Figure 2–11 Marshalled Termination Assembly I/O Connection Examples
2.9.4
Discrete and Analog Signal Connections
Figures 2-10 and 2-11 show examples of discrete signal and analog wiring for several channel types.
Table 2-4 provides allowable terminal receptacle wire sizes. Table 2-5 provides SCM Marshalled
Termination Assembly terminal identification. Table 2-6 provides SCM Termination Strip terminal
identification.
For each channel, refer to user’s Process and Instrumentation Drawings and prepare the cable ends of the
DC cabling for connection to the termination device, to the I/O Power Supply’s DC+ and Common
terminals, and to the field device.
Table 2–4 Receptacle Wire Sizes
TERMINATION
Local SCM
Termination Strip
SCM Marshalled
Termination
Assembly
March 2005
WIRE SIZE
STRIP LENGTH
22 to 14 AWG stranded or solid single conductor per terminal. 0.31 inch (8 mm)
Max. wire size of two conductors per terminal = 16 AWG.
22 to 10 AWG stranded or solid single conductor per terminal. 0.31 inch (8 mm)
Max. wire size of two conductors per terminal = 12 AWG.
2-27
Installation
SD39SCM-1
Table 2–5 SCM Marshalled Termination Assembly Terminal Identification
CHANNEL
TYPE
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
2-28
TERMINAL
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
TERMINAL
IDENTIFICATION
DC + CH 1
I/O CH 1
COM CH 1
DC + CH 2
I/O CH 2
COM CH 2
DC + CH 3
I/O CH 3
COM CH 3
DC + CH 4
I/O CH 4
COM CH 4
DC + CH 5
I/O CH 5
COM CH 5
DC + CH 6
I/O CH 6
COM CH 6
DC + CH 7
I/O CH 7
COM CH 7
DC + CH 8
I/O CH 8
COM CH 8
DC + CH 9
I/O CH 9
COM CH 9
DC + CH 10
I/O CH 10
COM CH 10
DC + CH 11
I/O CH 11
COM CH 11
CHANNEL
TYPE
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
TERMINAL
NUMBER
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
TERMINAL
IDENTIFICATION
IOUT CH 17
IIN CH 17
VIN CH 17
COM CH 17
SHLD CH 17
IOUT CH 18
IIN CH 18
VIN CH 18
COM CH 18
SHLD CH 18
IOUT CH 19
IIN CH 19
VIN CH 19
COM CH 19
SHLD CH 19
IOUT CH 20
IIN CH 20
VIN CH 20
COM CH 20
SHLD CH 20
IOUT CH 21
IIN CH 21
VIN CH 21
COM CH 21
SHLD CH 21
IOUT CH 22
IIN CH 22
VIN CH 22
COM CH 22
SHLD CH 22
IOUT CH 23
IIN CH 23
VIN CH 23
March 2005
SD39SCM-1
CHANNEL
TYPE
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
March 2005
Installation
TERMINAL
NUMBER
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
TERMINAL
IDENTIFICATION
DC + CH 12
I/O CH 12
COM CH 12
DC + CH 13
I/O CH 13
COM CH 13
DC + CH 14
I/O CH 14
COM CH 14
DC + CH 15
I/O CH 15
COM CH 15
DC + CH 16
I/O CH 16
COM CH 16
CHANNEL
TYPE
Analog
Analog
Analog
Analog
Analog
Analog
Analog
TERMINAL
NUMBER
82
83
84
85
86
87
88
TERMINAL
IDENTIFICATION
COM CH 23
SHLD CH 23
IOUT CH 24
IIN CH 24
VIN CH 24
COM CH 24
SHLD CH 24
2-29
Installation
SD39SCM-1
Table 2–6 SCM Local Termination Strip Terminal Identification
CHANNEL
TYPE
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Discrete
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
2-30
TERMINAL
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
TERMINAL
IDENTIFICATION
I/O CH 1
I/O CH 2
I/O CH 3
I/O CH 4
I/O CH 5
I/O CH 6
I/O CH 7
I/O CH 8
I/O CH 9
I/O CH 10
I/O CH 11
I/O CH 12
I/O CH 13
I/O CH 14
I/O CH 15
I/O CH 16
IOUT CH 17
IIN CH 17
VIN CH 17
COM CH 17
IOUT CH 18
IIN CH 18
VIN CH 18
COM CH 18
IOUT CH 19
IIN CH 19
VIN CH 19
COM CH 19
IOUT CH 20
CHANNEL
TYPE
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
TERMINAL
NUMBER
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
TERMINAL
IDENTIFICATION
IIN CH 20
VIN CH 20
COM CH 20
IOUT CH 21
IIN CH 21
VIN CH 21
COM CH 21
IOUT CH 22
IIN CH 22
VIN CH 22
COM CH 22
IOUT CH 23
IIN CH 23
VIN CH 23
COM CH 23
IOUT CH 24
IIN CH 24
VIN CH 24
COM CH 24
March 2005
SD39SCM-1
2.9.5
Installation
Unterminated I/O Cable Assembly Connections
The Unterminated I/O Interconnect Cable Assembly does not have connector P2 installed. Wires are
instead left for the user to terminate. Table 2-7 lists the wire color and identification information needed
for termination. Refer to user wiring diagrams to make the proper cable connections to the termination
assembly.
Table 2–7 Unterminated I/O Cable Assembly Wire Ident
J1, PIN P2, PIN
A2
75
WIRE/STRIPE
COLOR
WH/BLK
WIRE IDENT J1, PIN P2, PIN
DC+
WIRE/STRIPE
COLOR
WIRE IDENT
C18
43
BLUE/VIO
IIN CH 17
C2
74
WH/RED
I/O CH 1
E18
45
BLUE/GRAY
COM CH 17
E2
73
WH/BLUE
I/O CH 2
A20
56
GRN/WH
IOUT CH 18
A4
65
WH/GRN
DC+
C20
57
GRN/BLK
IIN CH 18
C4
49
WH/BRN
I/O CH 3
E20
41
GRN/RED
COM CH 18
E4
64
WH/OR
I/O CH 4
A22
16
GRN/BLUE
IOUT CH 19
A6
91
WH/YEL
DC+
C22
3
GRN/BRN
IIN CH 19
C6
104
WH/VIO
I/O CH 5
E22
17
GRN/OR
COM CH 19
E6
90
WH/GRAY
I/O CH 6
A24
6
GRN/YEL
IOUT CH 20
A8
100
RED/WH
DC+
C24
19
GRN/VIO
IIN CH 20
C8
101
RED/BLK
I/O CH 7
E24
5
GRN/GRAY
COM CH 20
E8
102
RED/BLUE
I/O CH 8
A26
70
OR/WH
IOUT CH 21
A10
36
RED/GRN
DC+
C26
71
OR/BLK
IIN CH 21
C10
47
RED/BRN
I/O CH 9
E26
72
OR/RED
COM CH 21
E10
46
RED/OR
I/O CH 10
A28
85
OR/BLUE
IOUT CH 22
A12
11
RED/YEL
DC+
C28
98
OR/GRN
IIN CH 22
C12
10
RED/VIO
I/O CH 11
E28
84
OR/BRN
COM CH 22
E12
24
RED/GRAY
I/O CH 12
A30
96
OR/YEL
IOUT CH 23
A14
22
BLUE/WH
COM
C30
94
OR/VIO
IIN CH 23
C14
8
BLUE/BLK
I/O CH 13
E30
95
OR/GRAY
COM CH 23
E14
21
BLUE/RED
I/O CH 14
A32
92
YEL/WH
IOUT CH 24
A16
14
BLUE/GRN
COM
C32
78
YEL/BLK
IIN CH 24
YEL/RED
COM CH 24
C16
27
BLUE/BRN
I/O CH 15
E32
79
E16
13
BLUE/OR
I/O CH 16
1
A18
44
BLUE/YEL
IOUT CH 17
Shield
Wire
Shield Wire
---
NOTES:
• DC+ is I/O power supply DC positive connection
• COM is I/O channel common connection
• CH is channel
• P2 is omitted on unterminated cable assembly
March 2005
2-31
Installation
2.9.6
SD39SCM-1
Terminal Block Connections
Use the following recommendations to prepare various wire ends for connection to terminal blocks.
Twisted Pair Connections
Twisted pair connections made to terminal blocks (as used to splice IOBUS cables) require special
attention. It is important to preserve the continuous cable impedence as transition is made at the terminal
block from one cable to another. Provision of a continuous impedence through all splice connections will
minimize signal reflections, thus assuring collision-free communications. To preserve the inherent cable
impedence, make sure that after preparing the cable ends, each intended pair is re-twisted at the same rate
right up to the wire connectors of the terminal block.
Stranded Wire Connections
Stripped ends of stranded or solid wires must not be soldered or tinned in preparation for use with DIN
rail terminal blocks. Solder is a malleable material and can loosen, causing open connections. Also,
corrosion to the terminal block can result from the pickling agents or flux used with solder.
Multiple Wire Connections
When it is necessary to connect two or more wires or a combination of wires and component leads (for
example, resistors and stranded or solid wire) to the same terminal, use a pin-type crimp-on connector to
join these wires. Then, insert the pin of the crimp-on connector into the DIN rail terminal block. Also,
use a pin-type crimp-on connector for connections that will be routinely connected and disconnected.
Wires and leads are crimped into the crimp-on connector and its pin is inserted into the selected terminal
block connection. Siemens recommends the use of insulated crimp-on connectors available from
electrical supply sources. Figure 2-12 shows an example of the use of a crimp-on connector.
NOTE
Use a crimping tool recommended by the connector manufacturer to
ensure a strong mechanical, low electrical resistance connection.
Sig nal In pu t Wire
Crimp-on
Connecto r
Ran ge Resistor
Figure 2–12 Using a Pin-type Crimp-on Connector
Torque Specifications
Use the following torque specifications when tightening connections in DIN rail terminal blocks:
• LMI (gray) DIN rail terminal blocks: 3.5 to 5.5 in. lbs.
• Phoenix (green) DIN rail terminal blocks: 6.5 to 8.5 in. lbs.
2-32
March 2005
SD39SCM-1
2.9.7
Installation
Protective Conductor Terminal
The MODULRAC and SIXRAC panels and the Local Termination Panel (if installed) have a protective
conductor terminal located in the lower right corner of the panel. Optional ground wires can be connected
from these terminals to safety ground. The symbol shown below and described in Table 1-2 is located
adjacent to the terminal. Refer to APACS+ Grounding Practices (SD39GND-1) for safety ground
recommendations.
Protective Conductor Ternminal Symbol
2.9.8
RAM Battery
The purpose of the RAM battery is to retain memory contents and real-time clock operation during power
interruptions. The battery MUST be connected just prior to applying power to the SCM. See section 6
for battery life data.
IMPORTANT
When powered up, a disconnected or failed battery or a battery with a
voltage below specifications will cause the SCM to reset.
Note the following:
•
It is recommended that the battery be disconnected to preserve battery life when the module is
placed in storage or stock.
•
The battery is disconnected when a module is shipped from the factory.
To check the connection status of the battery and to connect the battery if it is disconnected, perform the
following steps:
1. Place wrist strap on wrist and connect ground lead to module rack’s ground stud. ESD protection is
required when the battery compartment is opened.
2. Loosen the battery compartment cover screw and open the pivoting cover.
3. Refer to Figure 2-13 and note the location of the battery and its plug.
4. If the module’s battery is not connected, orient the keyed plug and push it onto the circuit board
connector pins. If the module’s battery is connected, proceed to step 5.
5. Proceed to section 2.9.9 to set the SECURITY Switch and close the battery compartment door.
March 2005
2-33
Installation
2.9.9
SD39SCM-1
Security Switch Setting
The SCM’s SECURITY switch and 4-mation’s Security function block can be configured to either:
•
Protect the data and/or configuration database stored in the SCM from being changed by any
MODULBUS station (ie. other SCM, ACM, or PC running 4-mation software).
or
•
Allow a transfer to overwrite the data and/or configuration database.
Note that the level of security is determined by the Security function block. The SECURITY switch is
illustrated in Figure 2-13.
Set the SECURITY switch as follows:
1. Place a static protection wrist strap on the wrist and connect its ground lead to the module rack
ground stud.
2. Loosen the battery compartment cover screw and open the pivoting cover. Identify the SECURITY
switch, which is a toggle switch in a slotted opening located above the DIAG PORT connector.
3. Push the toggle right or left as follows.
•
•
SECURITY ENABLE—Move the switch to the right, as indicated by the label
SECURITY DISABLE—Move the switch to the left
4. Secure the battery compartment cover and disconnect the wrist strap.
2.9.10 Downloading a Configuration
The configuration data for an SCM is compiled before downloading to the SCM. An SCM receives
compiled configuration data via the diagnostic port located inside the battery compartment. A Compiler
cable with MMJ jacks at each end connects the diagnostic port to the serial port of a Workstation or RackMounted Industrial Computer (RIC) running 4-mation version 4.10 (or higher). The Compiler and cable
are ordered as separate items and must be installed by the user prior to performing the downloading
operation.
Refer to the Configuration Guide Using 4-mation Version 4.10 or Higher with the Satellite Control
Module (CG39SCM-1) for details on:
•
•
•
•
2-34
SCM configuration
Compiling the configuration
Downloading the configuration
Uploading the configuration.
March 2005
SD39SCM-1
Installation
Figure 2–13 Security Switch and RAM Battery Locations
March 2005
2-35
SD39SCM-1
3
Maintenance
Maintenance
The Satellite Control Module (SCM) and its associated SCM Termination Strip require minimal
maintenance. Some routine maintenance is recommended in the form of a visual inspection and a
possible cleaning.
DANGER
Electrical shock hazard
Explosion hazard
Will cause death, serious injury or property damage
•
•
•
•
3.1
Remove power from all wires and terminals and verify that there
are no hazardous voltages before working on equipment.
In potentially hazardous atmosphere, remove power from
equipment before connecting or disconnecting power, signal, or
other circuit, or extracting/inserting module.
Observe all pertinent regulations regarding installation in
hazardous area.
Ensure all devices are rated for hazardous (classified) locations.
Tool and Equipment Requirements
The following tools and equipment are necessary for servicing:
•
•
•
Common electronic servicing hand tools
Grounding wrist strap—use when replacing a backup battery or opening the battery compartment
Safety glasses and rubber gloves—use when handling a leaking lithium battery
3.2
Preventive Maintenance
The following subsections are the recommended preventive maintenance procedures.
3.2.1
Visual Inspection
The SCM and its associated SCM Termination Strip or SCM Marshalled Termination Assembly
(whichever is installed) should be subjected to a periodic visual inspection. The frequency of inspection
will depend on the severity of the operating environment. The primary aim of the inspection is to reveal
an excessive accumulation of dust, dirt, or other foreign material adhering to the SCM and its Termination
Strip. Excessive accumulation of dirt and dust prevents efficient heat dissipation and may eventually
cause module or system failure. Refer to section 3.2.2 for cleaning instructions.
March 2005
3-1
Maintenance
SD39SCM-1
The status of the SCM is indicated by LEDs located on its bezel. Refer to section 3.3.1 for LED
indications.
The SCM will alarm on an overtemperature condition long before overtemperature failure is a possible
threat.
3.2.2
Cleaning
Cleaning a module involves brushing or vacuuming the protective covers to restore cooling efficiency that
may have been degraded by accumulated dust.
Cleaning a termination assembly involves careful brushing and vacuuming to remove accumulated dust
and dirt harboring chemical particulate that may accelerate terminal, switch, or connector contact
corrosion.
If the SCM is installed in a cabinet complying with the National Electronic Manufacturers Association
(NEMA) 12/IP55 specification, the SCM does not require inspection for cleanliness.
3.3
Troubleshooting
Fault analysis focuses on identifying a failure as annunciated by the operator interface or by status LEDs
located on the SCM’s bezel as listed in Table 3-1. If the operator interface alarm blocks have been
configured, module errors will be reported. The error code with a description of the error and corrective
action to be taken by the user can be accessed by the operator. There are no user replaceable parts inside
the SCM.
Failure annunciation and fault analysis is also available within the 4-mation software (refer to Using the
ProcessSuite 4-mation Configuration Software, CG39-20, located in binder UM39-11). Software
messages and error codes are found in CG39-21. The on-line display of the “Module Tree” tool in 4mation graphically represents both the hardware modules that comprise a system and the function that
hardware performs. There is an entry in the Tree for each module including its node, rack, and slot
address.
In the Module Tree, the SCM symbols are displayed to the left of the address. When 4-mation is running
in the on-line mode, these symbols are displayed in one of three colors, depending upon a modules’s state
of operation:
•
•
•
Red—Indicates a module which is not initialized
Yellow—Indicates a module which is initialized but not configured
Green—Indicates a configured module
The SCM address text (e.g. [R01,S02] ) is displayed in one of four colors, based on error status:
•
•
•
•
3-2
White—Indicates that error information could not be obtained from the module
Red—Indicates the module has errors
Green—Indicates the module has no errors
Yellow—Indicates the resource module has no errors but its I/O does
March 2005
SD39SCM-1
Maintenance
Once a fault is identified, correct the fault by replacing the failed SCM with a known good module and
return the failed SCM to one of the addresses in the warranty statement for repair. Refer to sections 3.9 or
3.10 to return a failed SCM for repair.
March 2005
3-3
Maintenance
3.3.1
SD39SCM-1
Bezel LEDs
Three LEDs on the SCM’s bezel show module status as stated in Table 3-1.
Table 3–1 Status LED Indications
LED LABEL
OK
ACTIVE
LED INDICATION
Steady GREEN
Flashing GREEN
Steady RED
Flashing RED
OFF
Steady GREEN
SCM STATUS
SCM OK
SCM not configured
SCM control functions inoperative
SCM control functions partially operative
SCM input power fault
SCM in active (control) mode;
lit on active SCM of redundant pair
SCM in standby mode or functions
inoperative if OK LED is steady RED
OFF
3.3.2
Diagnostic Port
A diagnostic port is located in the bezel battery compartment. It is only to be used for downloading a new
compiled configuration to the SCM. It is not a field troubleshooting port.
CAUTION
Attempting to use the diagnostic port for any other purpose than
downloading a new configuration may result in loss of configuration and
suspension of the process being controlled.
3-4
March 2005
SD39SCM-1
3.4
Maintenance
SCM Removal/Replacement
A module can be removed from or installed in the rack without removing power from the module slot,
from I/O circuits, or from the rack.
3.4.1
Removal
Refer to Figure 2-7 and the following removal procedure:
1. As shown in Figure 2-7, pull open the bezel’s pivoted top and bottom handles to expose the module’s
slotted captive mounting screws. Loosen the screws.
2. Grasp the top and bottom handles and pull the module from the card cage.
3. If the module needs to be returned, place the module in a static shielding bag and package for return.
Refer to section 3.9 or 3.10 for return instructions.
3.4.2
Replacement
Refer to Figure 2-2 and the following removal procedure:
1. Remove the replacement SCM from its protective bag. The module may be safely handled, as the
circuit card is shielded from access by protective covers. If present, set aside the keying pin kit.
2. If the module is already keyed, confirm that its keying matches that of the removed module. If not
keyed, key the replacement SCM as described in section 2.8.
3. Insert the SCM in its rack slot. Firmly seat the module in the backplane and termination board
connectors. If the module does not seat, check for correct keying A properly seated module will
have the rear of its bezel flush against the rack’s rails.
A keyed module that is not matched to a slot will not engage the backplane and termination strip
connectors or seat flush against the rack’s front rails.
4. As shown in Figure 2-7, pull open the bezel’s pivoted top and bottom handles to expose the module’s
slotted captive mounting screws and secure the module to the top and bottom rails. Close the bezel’s
handles when finished.
CAUTION
Do not use the captive mounting screws to seat the module. Damage to
the bezel can result.
March 2005
3-5
Maintenance
3.5
SD39SCM-1
SCM Termination Strip Removal/Replacement
Sections 3.5.1 and 3.5.2 describe the removal and replacement procedures for the SCM Termination Strip.
3.5.1
Removal
Refer to Figure 2-2 and the following removal procedure:
1. As necessary, take appropriate steps to shutdown the processes monitored or controlled by the field
devices connected to the SCM Termination Strip.
2. Refer to section 3.4 and remove the associated SCM from its slot in the rack. Place the SCM in a
static shielded bag for protection.
3. Unplug signal terminals from the SCM Termination Strip. Disconnect power leads from terminals.
4. Loosen the SCM Termination Strip’s captive mounting screws. Gently lift the bottom of the strip in
an arc until it is free of its alignment pin located immediately above the “MOORE” logo. Pull the top
of the termination strip from the grooved backplane spacer and lift it from the rack.
3.5.2
Replacement
Refer to Figure 2-2 and the following replacement procedure:
1. Refer to section 2.6 and install the replacement termination strip.
2. Reconnect (plug in) the signal terminals and reconnect power leads to terminals.
3. Install the SCM as explained in section 3.4.
3-6
March 2005
SD39SCM-1
3.6
Maintenance
SCM Marshalled Termination Assembly Removal/Replacement
Sections 3.6.1 and 3.6.2 describe the removal and replacement procedures for the SCM Marshalled
Termination Assembly.
3.6.1
Removal
Refer to Figure 2-4 and the following removal procedure:
1. As necessary, take appropriate steps to shutdown the processes monitored or controlled by the field
devices connected to the Marshalled Termination Assembly (MTA).
2. Refer to section 3.4 and remove the associated SCM from its slot in the rack. Place the SCM in a
static shielded bag for protection.
3. Unplug the signal and power terminals from the MTA.
4. Refer to Figure 2-4 to remove the MTA from the DIN rail.
3.6.2 Replacement
Refer to Figure 2-4 and the following replacement procedure:
1. Refer to section 2.7 and install the replacement SCM MTA.
2. Reconnect (plug in) the signal and power terminals.
3. Install the SCM as explained in section 3.4.
3.7
Interconnect I/O Cable Removal/Replacement
Sections 3.7.1and 3.7.2 describe the removal and replacement procedures for an Interconnect I/O Cable.
3.7.1
Removal
Refer to Figures 2-2 and 2-6 and the following removal procedure:
1. As necessary, take appropriate steps to shutdown the involved process.
2. Refer to section 3.4 and remove the associated SCM from its slot in the rack. Place the SCM in a
static shielded bag for protection.
3. At the Marshalled Termination Assembly, disconnect theInterconnect I/O Cable’s connector P2 or the
Unterminated I/O Cable’s individual connections. All individual connections should be labeled for
correct reconnection.
March 2005
3-7
Maintenance
SD39SCM-1
4. At the rack, loosen the cable’s captive mounting screws. Gently lift the bottom of the cable in an arc
until the cable is free of its alignment pin. Pull the top of the cable from the grooved backplane
spacer and lift it from the rack.
5. Remove the cable from the cable tray or other cable routing equipment.
3.7.2
Replacement
Refer to Figures 2-2 and 2-6 and the following replacement procedure:
1. Route the Interconnect I/O Cable Assembly between the rack and marshalling cabinet.
2. Install the cable as described in section 2.7.3.
3. Install the SCM as described in section 3.4.
3.8
RAM Battery Replacement
A 3.6V lithium battery is housed in the module’s bezel battery compartment. When power is removed
from the SCM, the battery maintains SCM memory (RAM) to retain the configuration and executable
code.
The condition of the battery is monitored by software. A weak battery will be indicated by System
Service Code (SSC) 28, Error Code (EC) 01. A disconnected battery will be indicated by SSC 28, EC 19.
The error code and message will be displayed on the system’s computer running 4-mation Release 2 or
higher software.
If the battery is weak and a configuration is stored in the SCM, replace the battery with power applied to
the SCM. If the configuration is lost, it can be quickly downloaded using 4-mation software.
Replace a battery as follows:
1. To protect the SCM from electrostatic discharge, snap on a wrist strap and connect its ground lead to
the ground stud on the module rack panel.
2. Loosen the bezel compartment screw and open the door. See Figure 2-13.
3. Unplug the battery; note how the connector is keyed.
4. Pull the battery from the compartment; a cloth hook and loop fastener secures the battery.
5. The replacement battery is supplied with a new hook and loop fastener. Separate the fastener halves.
6. If the compartment mounted portion of the fastener is damaged, remove it and install the separated
fastener half.
7. Mount the new RAM battery in the compartment.
3-8
March 2005
SD39SCM-1
Maintenance
8. Orient the keyed battery connector and plug it into the circuit board mounted connector.
9. Close and secure the battery compartment door. Remove the wrist strap.
Battery handling and disposal precautions are described below.
WARNING
Lithium Battery:
•
•
•
•
•
•
•
3.9
Properly handle replacement and removed batteries
Properly dispose of a removed battery
Do not burn a battery
Do not short circuit battery terminals
Do not attempt to charge the battery
If electrolyte is exposed, wear safety glasses and rubber gloves
when handling the battery
For details contact battery manufacturer
Spare and Replacement Parts
One spare Satellite Control Module and battery should be stocked for every 1 to 10 in service. Spare and
replacement parts can be ordered from one of the addresses in the Warranty statement or through a local
Siemens representative.
Refer to section 5 for the part numbers of optional and accessory items. Assembly part numbers are
printed on most modules and associated hardware. When ordering, provide the model number, part
number, serial number, and software compatibility identification code from the module to be replaced or
spared. A purchase order number should also be included.
IMPORTANT
When placing an SCM in spare parts stock, unplug the battery connector.
This will extend battery life. Refer to steps 1 to 3 in section 3.8 for the
procedure. Also, a cooler storage temperature extends battery life.
March 2005
3-9
Maintenance
SD39SCM-1
WARNING
Lithium Battery:
•
•
•
Store battery in original shipping container
Do not store battery loosely in a metal bin or short circuit battery terminals
Store a battery in a cool well ventilated area; maximum storage temperature
should not exceed 85°C (185°F)
3.10 Return of Equipment within North America
If The SCM needs to be returned for any reason, perform the following:
To Return Equipment
•
Call the Repair Order Group at (215) 646-7400, ext 4RMA (4762) weekdays between 8:00 a.m. and
4:45 p.m. eastern time to obtain an RMA number. Mark the RMA number prominently on the
outside of the shipment.
•
When calling for an RMA number, provide the reason for the return. If returning equipment for
repair, failure information (e.g. error code, failure symptom, installation environment) will be
requested. Supply a purchase order number for repairs.
Material Safety Data Sheet
A Material Safety Data Sheet (MSDS) must be included with each item being returned that was stored or
used anywhere hazardous materials were present.
Packaging
Package assembly in original shipping materials. Otherwise, package it for safe shipment or contact the
factory for shipping recommendations. A module must be placed inside a static shielding bag to protect it
from electrostatic discharge.
3.11 Return of Equipment Outside of North America
Contact the appropriate Siemens product support group listed in section 1.2 of this Instruction. Provide
the reason for the return. For repairs, supply a purchase order number. Request equipment packaging and
shipping instructions.
3-10
March 2005
SD39SCM-1
Maintenance
3.12 Maintenance Records
An accurate record keeping system for tracking maintenance operations should be established and kept up
to date. Data extracted from the record may serve as a base for ordering maintenance supplies, including
spare parts. The record may also be useful as a troubleshooting tool. In addition, maintenance records
may be required to provide documentary information in association with a service contract. It is
suggested that the following information be recorded:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Date of service incident
Name or initials of service person
Brief description of incident symptoms and repairs performed
Replacement part or assembly number
Software compatibility code of original part
Software code of replacement part
Serial number of original part
Serial number of replacement part
Issue number of original circuit module
Issue number of replacement circuit module
Date of completion
„
March 2005
3-11
SD39SCM-1
4
Circuit Description
Circuit Description
Described are the three major sections that comprise the Satellite Control Module (SCM).
4.1
Processor/Communication Section
The following subsections describe the processor/communication sections of the SCM.
4.1.1
Processor
The processor/communications section is driven by a Motorola 68360 controller integrated circuit (IC).
The controller provides the processing power of a 68020 IC and a variety of memory, peripheral
management, and communications coprocessors on a single chip.
4.1.2
IOBUS
The IOBUS elements consist of an IOBUS modem and dual IOBUS line drivers/receivers. The 68360
Communications Controller supervises IOBUS communications through handshaking operations with the
IOBUS modem. The IOBUS modem
•
•
•
converts received IOBUS data into a form suitable for data processing.
converts serial data from the 68360 into a form suitable for transmission over the IOBUS.
limits the length of time the SCM can transmit over the IOBUS in the event of a controller failure.
4.1.3
SPIBUS
The SPIBUS is a local communication bus used by the SCM and its I/O modules. The SPIBUS has a
daisy-chain architecture; therefore, inserting any non-client modules between an SCM and its client
modules, or removing a client module, shuts down SPIBUS. Use of multiple SCMs is supported only in
MODULRACs identified by part number/rev number 16114-171/05 or higher. A MODULRAC with a
revision number 04 or lower can support only one SCM, since its circuitry connects the SPIBUS signals
linearly rather than in a daisy-chain fashion, thus limiting the use of one SCM per MODULRAC
(multiple SCMs would attempt to control each other’s internal peripherals and/or client modules). This
restriction does not exist with SIXRAC. An SCM breaks the SPIBUS connections on its left and starts
a new SPIBUS segment.
The SPIBUS elements consist of a data transceiver section and the following:
•
Address Generator—The address generator specifies at which slot address the client being addressed
is residing. There is an additional address bit which allows two logical SPI entities to reside at each
slot address.
•
SPIBUS Clock—The SPIBUS clock is generated by the SCM and clocks both outgoing and incoming
data. The SPIBUS data rate is 750 kbps.
March 2005
4-1
Circuit Description
4.1.4
SD39SCM-1
Serial Ports
The serial ports available on the front of the SCM bezel are configured as a DTE; they are designed for
direct connection to a modem or similar apparatus. Each port is controlled by the 68360 and an RS-232
line driver/receiver.
4.1.5
Diagnostic Port
The diagnostic port located behind the hinged bezel door is to be used only for local downloading of a
new configuration to the SCM.
IMPORTANT
Do not leave the download cable connected after the download is
complete. Do not attempt to use the diagnostic port for any other
purpose, as unpredictable operation of the SCM may result.
4.2
Discrete I/O Section
The following subsections describe the discrete I/O section of the SCM.
4.2.1
Processor
The discrete I/O section is driven by a Motorola 68332 controller IC. This provides the processing power
of a 68000 IC and a variety of memory, peripheral management, and time function coprocessors on a
single IC.
4.2.2
External Power
The discrete I/O section derives its power from the user-provided I/O power supply. The user must
provide power to the discrete section, even if only discrete inputs are to be used.
4.2.3
Output Channel
All output channels are electrically identical. A power MOSFET switches the user’s power to a field
device when the channel is used as an output. The current through the MOSFET is monitored by a driver
IC. If the current exceeds a preprogrammed amount, the MOSFET is turned off. There is also a fuse at
the output of the MOSFET in case the MOSFET fails shorted. The input circuitry is connected to the
load side of this fuse so that the fuse status can be monitored by software.
4-2
March 2005
SD39SCM-1
4.2.4
Circuit Description
Conventional Input
All input channels are electrically identical. The input circuit has approximately 100 Kohm input
impedance; this is for compatibility with magnetic pickups. If line wetting is required, the user must
provide an external resistor. The input voltage is attenuated and applied to the input of a comparator. The
other input of the comparator is driven from an 8-bit D/A converter; this allows the threshold level to be
set from -4V to 60V in 1/4V increments.
4.3
Analog I/O Section
The following subsections describe the analog I/O section of the SCM.
4.3.1
Processor
The analog I/O section uses a Motorola 68HC11 processor. All program and data memory is on the
processor chip.
4.3.2
Analog Output Channel
All analog output channels are electrically identical. Each output channel consists of a D/A converter
which outputs a 1V to 5V signal and an output buffer, which can be configured to produce a controlled
voltage or current. The input circuit reads the voltage at the feedback pin of the output buffer; this
provides a diagnostic check of the output.
4.3.2.1 Voltage Output
In the voltage output mode, the buffer is configured to act as a voltage follower, ensuring that the output
voltage is the same as the voltage generated by the D/A converter.
4.3.2.2 Current Output
In the current output mode, a 250 ohm resistor is connected from the buffer feedback terminal to ground.
The load is placed between the output of the buffer and the feedback terminal. The buffer forces the
voltage across the 250 ohm resistor to be the same as the voltage produced by the D/A converter;
therefore, 1V to 5V across the resistor corresponds to a 4 mA to 20 mA current flowing through the
resistor and through the load.
NOTE
The ratio between the current and voltage is dependent on the value of
the external resistor and its wiring. It is strongly recommended that the
actual value of the resistor and external wiring be measured and entered
into the appropriate softlist parameter to ensure maximum accuracy.
March 2005
4-3
Circuit Description
4.3.3
SD39SCM-1
Analog Input Channel
All analog input channels are electrically identical. Each input channel passes through a low-pass filter, a
multiplexer, a buffer, and an A/D converter with an input range of 1V to 5V.
4.3.3.1 Voltage Input
For voltage inputs, the field wiring is connected between the input terminal and ground. The input
voltage is passed to the A/D converter and read directly.
4.3.3.2 Current Input
For current inputs, a 250 ohm resistor is connected from the input terminal to the return terminal. This
will develop a required sensing voltage across the resistor.
NOTE
The ratio between the current and voltage is dependent on the value of
the external resistor and its wiring. It is strongly recommended that the
actual value of the resistor and external wiring be measured and entered
into the appropriate softlist parameter to ensure maximum accuracy.
The following are examples of devices connected as current inputs:
•
Two-Wire Transmitters - A two-wire transmitter is connected between the output buffer terminal
and the input terminal. When the channel is configured as an input, the output is set to full scale and
the transmitter regulates the actual loop current. This current passes through the 250 ohm resistor and
is converted into a voltage which is read by the A/D converter.
•
Four-Wire Transmitters - A four-wire transmitter is connected between the input terminal and the
return terminal. The output current of the transmitter passes through the 250 ohm resistor and is
converted into a voltage which is read by the A/D converter.
„
4-4
March 2005
SD39SCM-1
5
Model Designation
Model Designation
Refer to Figure 5-1 to decode the model designation.
IMPORTANT
Before installing, applying power, or servicing, review the model
designation on the nameplate and this section for required power,
options, and electrical classification.
39SCM
N N N A A N Satellite Control Module (SCM)
││││││
│ │ │ │ │ └─ Approvals: N=Default Approvals
│ │ │ │ └─── Software Revision Level: A=4.10
│ │ │ └───── Hardware Revision Level: A to Z
│ │ └─────── Reserved for future use
│ └───────── Reserved for future use
└─────────── Reserved for future use
Figure 5–1 Model Designation
5.1
Accessories
Refer to Table 5-1 for the list of available accessories for the SCM.
Table 5–1 SCM Accessories
PART NUMBER
DESCRIPTION
16114-97
Marshalling Utility Panel (Figure 2-4). Includes installed wire ducts and DIN
rails for mounting marshalled termination assemblies. For installation in an
APACS MODULPAC cabinet.
Blank Utility Panel (Figure 2-4). Similar to above but without installed ducts
and rails. For installation in an APACS MODULPAC cabinet.
End Stop Kit. End Stops prevent the sliding of an SCM Marshalled Termination
Assembly along the mounting DIN rail.
SCM Download Cable
RAM Battery, 3.6 V Lithium
Mounting Ear (see Figure 2-8). Provides for a flat mounting of the SCM
Marshalled Termination Assembly. Four pieces required. Refer to section
2.8.2.
16114-12
16056-468
16137-199
14743-2
16056-562
(single piece number)
March 2005
5-1
Model Designation
5.2
SD39SCM-1
Options
Table 5-2 lists the available SCM options. A selection of the type and quantity of termination assemblies
is made by the user. When marshalled termination assemblies are selected, a selection from the list of
Interconnect I/O Cables must also be made.
Table 5–2 SCM Options
Part Number
16274-31
16291-31
16137-122
16137-114
16137-115
16137-116
16137-117
16137-118
16137-119
16137-120
16137-121
Description
SCM Termination Strip
SCM Marshalled Termination Assembly
Interconnect I/O Cable Assembly 5.7 ft. (1.75 m)
Interconnect I/O Cable Assembly 10 ft. (3 m)
Interconnect I/O Cable Assembly 26.2 ft. (8 m)
Interconnect I/O Cable Assembly 49.2 ft. (15 m)
Interconnect I/O Cable Assembly 98.4 ft. (30 m)
Unterminated Interconnect I/O Cable Assembly 10 ft. (3 m)
Unterminated Interconnect I/O Cable Assembly 26.2 ft. (8 m)
Unterminated Interconnect I/O Cable Assembly 49.2 ft. (15 m)
Unterminated Interconnect I/O Cable Assembly 98.4 ft. (30 m)
„
5-2
March 2005
SD39SCM-1
6
Specifications
Specifications
This section lists the specifications for the Satellite Control Module (SCM).
6.1
Module Specifications
Table 6-1 lists the SCM’s mechanical, electrical, and environmental specifications.
Table 6–1 SCM Specifications
TYPE
Module
Analog Inputs
March 2005
SPECIFICATION
Backplane Operating Voltage
Backplane Current
Electrical Isolation
DATA
24 Vdc, ± 10%
0.30 amps
Dielectric strength tested with
1920 Vac between I/O channels
and ground for 1 second
Operating (Discrete I/O)Voltage 21.0 to 52.8 Vdc, 24.0/48.0
nominal
Immunity, Electrostatic Discharge IEC 1000-4-2
(ESD)
Contact discharge 8 kV
Air discharge: 15 kV air
Immunity, Radiated
IEC 1000-4-3
Electromagnetic Field (RFI)
10 V/m
27 to 1000 MHz
Immunity, Power Lines, Surge
IEC 801-4
4 kV
Operating Temperature
0 to 60 C (-32 to 140F)
Operating Humidity
5 to 95%, non-condensing
Storage Temperature
-25 to 85 C (-13 to 185F)
Storage Humidity
0 to 100%, condensing
SCM in powered rack:
Battery Life Expectancy:
10 years.
Storage w/battery disconnected:
10 Years@23°C, 9.5 Yrs@71°C,
8.5 Yrs@85°C
Storage w/battery connected:
1 Month
Voltage Input Range
1 to 5V
Current Input Range
4 to 20 mA
Accuracy
0.5% of span
Resolution
12 bits
6-1
Specifications
SD39SCM-1
TYPE
Analog Outputs
Discrete Inputs
Discrete Outputs
6.2
SPECIFICATION
Voltage Mode Accuracy
Voltage Mode Resolution
Output Current Range
Current Mode Accuracy
Input Delay Filter Time
Input Wetting Current
“ON” State Voltage Range
“OFF” State Voltage Range
Maximum “OFF” State Current
Output Current per Channel
Output Current per Module
Output Fuse Rating
Surge Current
“OFF” State Leakage Current
DATA
0.5% of span
12 bits
4 to 20 mA
0.5% of span
1.8 ms. typ.
None, user provided
User-selectable
User-selectable
3.0 mA
0.6 amps, max.
9.6 amps max. at 60 C (140F)
2 amps (non-field replaceable)
2.0 amps max. for 10 msec.
1.6 mA (non-redundant)
Agency Approvals
IMPORTANT
Before installing, applying power to, or servicing an SCM, see the
module’s nameplate for electrical classification.
„
6-2
March 2005