SITRANS RD300 Catalog Sheet

© Siemens AG 2016
Supplementary Components
Displays
SITRANS RD300
■ Overview
■ Application
The RD300 is a remote display for level, flow, pressure, weighing, and other process instruments. This display also acts as a
multi-purpose, easy to use rate/totalizer ideal for flow rate, total,
and control applications.
Data can be remotely collected, logged and presented on your
local computer using the free downloadable RD Software.
The display accepts a single or dual input of current and voltage.
This makes the RD300 an ideal fit for use with most field instruments.
The SITRANS RD300 is a panel mount remote digital display for
process instrumentation and acts as a multi-purpose, easy to
use, rate/totalizer ideal for flow rate, total, and control applications.
■ Benefits
7
• Easy setup and programming via front panel buttons or
remotely using RD software
• Display readable in sunlight
• Input: accepts current and voltage
• Single or dual 24 V DC transmitter power supply
• Serial communication using built in protocol or Modbus RTU
• Supports up to 8 relays and 8 digital I/O for process control
and alarming
• 32-Point linearization, square root or exponential linearization
• Multi-pump alternation control
• Supports total, grand total or non-resettable grand total
• 9-digit totalizer with total overflow feature
• Large dual-line, 6-digit display
• Configure, monitor, and datalog from a PC
• Dual-input option with math functions: addition, difference,
average, multiplication, division, minimum, maximum,
weighted average, ratio, concentration
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Siemens FI 01 · 2016
The RD300 can be set up as a standard panel mount, or combined with optional enclosures to allow it to house up to 6 displays.
• Key Applications: tank farms, pump alternation control, local
or remote display of level, flow, pressure and weighing
instrument values, PC monitoring and data logging with RD
Software.
© Siemens AG 2016
Supplementary Components
Displays
SITRANS RD300
■ Technical specifications
Mode of operation
Electrical connection
Measuring principle
Analog to digital conversion
Measuring points
1 or 2 instruments
mA output signal
2-core copper conductor, twisted,
shielded, 0.82 ... 3.30 mm²
(18 ... 12 AWG), Belden 8 760 or
equivalent is acceptable
Electrical connection and relay
connection
Copper conductor according to
local requirements,
rated 3A at 250 V AC
Input
Measuring range
• Current
4 ... 20 mA, 0 ... 20 mA
• Voltage
0 V DC ... +10 V DC, 1 ... 5 V,
0 ... 5 V
Power supply
Input voltage option
85 ... 265 V AC, 50/60 Hz;
90 ... 265 V DC, 20 W max. or
jumper selectable 12/24 V DC
± 10 %, 15 W max
Transmitter power supply
Terminals P+ & P-: 24 V DC
± 10 %, 12/24 V DC powered
models selectable for 24, 10, or
5 V DC supply (internal jumper J4),
85 ... 265 V AC models rated at
200 mA max, 12/24 V DC powered
models rated at 100 mA max,
at 50 mA max for 5 or 10 V DC
supply.
External loop power supply
35 V DC max.
Output loop resistance
• 24 V DC, 10 ... 700  max.
Output signal
Output
• 4 ... 20 mA (optional)
• Modbus RTU
Relays
2 or 4 SPDT (Form C) internal
and/or 4 SPST (Form A) external;
rated 3 A at 30 VDC and
125/250 VAC resistive load; 1/14 HP
(50 W) at 125/250 V AC for inductive
loads (optional)
Communications
• RS 232 with Modbus RTU
• RS 422/485 with Modbus RTU
Accuracy
4 ... 20 mA optional output
± 0.1 % FS
• 35 V DC (external),
100 ... 1 200  max.
± 0.004 mA
Process input
± 0.05 % of span ± 1 count,
square root: 10 ... 100 % FS
Rated operating conditions
Displays and controls
Main display
0.6 inch (15 mm) high, red LEDs
Second display
0.46 inch (12 mm) high, red LEDs,
6-digits: each (-99 999 ... 999 999)
Memory
• Non-volatile
Ambient conditions
• Storage temperature range
-40 ... +85 °C (-40 ... +185 °F)
• Operating temperature range
-40 ... +65 °C (-40 ... +149 ºF)
• Stores settings for minimum of
10 years if power is lost
Design
Weight
269 g (9.5 oz) (including options)
Material (enclosure)
• 1/8 DIN, high impact plastic,
UL94V-0, color: gray
• Optional plastic, steel and stainless
steel (Type 304, EN 1.4301)
NEMA 4 enclosures
Degree of protection
Type 4X, NEMA 4X, IP65 (front
cover); panel gasket provided
Programming
• Primary: front panel
• Secondary: Meter Copy or PC
with SITRANS RD Software
Certificates and approvals
CE, UL, CUL
Options
Enclosures
Plastic, steel and stainless steel
(Type 304, EN 1.4301) NEMA 4
and 4X enclosures
Siemens FI 01 · 2016
7/17
7
© Siemens AG 2016
Supplementary Components
Displays
SITRANS RD300
Selection and Ordering data
Article No.
Selection and Ordering data
SITRANS RD300
Dual line Remote digital display compatible with
PI instruments
7ML5744-
Other Operating Instructions
7 7 7 7 7 - 00 A
SITRANS RD DIN-Rail Mounting Kit, English
A5E31979181
SITRANS RD DIN-Rail Mounting Kit, German
A5E31979184
SITRANS RD Expansion Modules, English
A5E31979173
SITRANS RD Expansion Modules, German
A5E31979176
SITRANS RD Serial Communications Accessories,
English
A5E31979195
SITRANS RD Serial Communications Accessories,
German
A5E31979197
Click on the Article No. for the online configuration in the PIA Life Cycle Portal.
Input voltage
85 ... 265 V AC, 50/60 Hz; 90 ... 265 V DC,
20 W max.
12 ... 36 V DC; 12 ... 24 V AC, 6 W max.
Output
None
2 Relays
4 Relays
4 ... 20 mA output
2 Relays and 4 ... 20 mA output
4 Relays and 4 ... 20 mA output
2
A
B
C
D
E
F
Type
Single input process and flow rate/totalizer Mtr
Dual input process Mtr
Display
Standard
SunBright
Accessories
A
B
0
1
Approvals
UL, C-UL and CE
0
Article No.
Selection and Ordering data
Operating Instructions
Single input process and flow rate/totalizer Mtr
English
German
Dual input process Mtr
English
German
A5E31917845
A5E31948919
A5E33481367
A5E33481387
DIN-Rail Mounting Kit
7ML1930-6AB
4 Relays Expansion Module
7ML1930-6AC
4 Digital I/O Module
7ML1930-6AD
Dual output 4 ... 20 mA expansion module for dual
input meter
7ML1930-6AP
Meter Copy Cable
7ML1930-6AE
RS 232 Serial Adapter
7ML1930-6AF
RS 422/485 Serial Adapter
7ML1930-6AG
RD300 USB Serial Adapter
7ML1930-6AJ
USB to RS 232 Converter
7ML1930-6AK
Snubber
7ML1930-6AL
Plastic enclosure
For 1 meter
7ML1930-6AM
For 2 meters
7ML1930-6AN
For 4 meters
7ML1930-1CK
For 5 meters
7ML1930-1CL
For 6 meters
7ML1930-1CM
Note: The operating instructions should be ordered
as a separate line on the order.
All literature is available to download for free, in a
range of languages, at http://www.siemens.com/
processinstrumentation/documentation
This device is shipped with the Siemens Level and
Weighing manual DVD containing Quick Starts and
Operating Instructions.
■ Dimensional drawings
NO NC C NO NC C
-
+ R
Optional
connectors
installed
44.5
(1.76)
NO NC C NO NC C
7
1
Article No.
62
(2.45)
106
(4.17)
121
(4.77)
15
(0.59)
128
(5.05)
91.5
(3.61)
152 (6) Clearance
119
(4.68)
SITRANS RD300, dimensions in mm (inch)
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Siemens FI 01 · 2016
© Siemens AG 2016
Supplementary Components
Displays
SITRANS RD300
■ Schematics
Connector labeling for fully loaded single input meter
RELAY4
RELAY3
RELAY2
RELAY1
MA OUT
6
5
4
3
2
1
6
5
4
3
2
1
3
2
1
NO
NC
C
NO
NC
C
NO
NC
C
NO
NC
C
I-
I+
R
P+
P-
F4
COM
V+
mA+
1
2
3
4
5
6
1 2 3 4 5 6 7 8
SIGNAL
DW1815
M-LINK
+
-
1
2
POWER
Transmitter powered by external supply or self-powered
INPUT SIGNAL
INPUT SIGNAL
P+
P-
F4
COM
V+
mA+
P+
P-
F4
COM
V+
mA+
1
2
3
4
5
6
1
2
3
4
5
6
+
+
External
power
supply
-
-
2-Wire
4 ... 20 mA
transmitter
+
2-Wire 4 ... 20 mA
self-powered
transmitter
Transmitter powered by internal supply
INPUT SIGNAL
P-
F4
COM
V+
mA+
P+
P-
F4
COM
V+
mA+
1
2
3
4
5
6
1
2
3
4
5
6
+
7
INPUT SIGNAL
P+
+
-
-
Signal
3-Wire
4 ... 20 mA
transmitter
2-Wire
4 ... 20 mA
transmitter
Voltage Input Connections
INPUT SIGNAL
INPUT SIGNAL
P+
P-
F4
COM
V+
mA+
P+
P-
F4
COM
V+
mA+
1
2
3
4
5
6
1
2
3
4
5
6
-
+
Voltage
signal
+
-
Signal
3-Wire voltage
transducer
SITRANS RD300 connections
Siemens FI 01 · 2016
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