Energy Monitoring PICtail Plus Daughter Board User's Guide

Energy Monitoring
PICtail™ Plus Daughter Board
User’s Guide
© 2011 Microchip Technology Inc.
DS51933A
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Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
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•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
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•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
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and may be superseded by updates. It is your responsibility to
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
PIC32 logo, rfPIC and UNI/O are registered trademarks of
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Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, chipKIT,
chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net,
dsPICworks, dsSPEAK, ECAN, ECONOMONITOR,
FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP,
Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB,
MPLINK, mTouch, Omniscient Code Generation, PICC,
PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE,
rfLAB, Select Mode, Total Endurance, TSHARC,
UniWinDriver, WiperLock and ZENA are trademarks of
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countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2011, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-61341-243-5
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS51933A-page 2
© 2011 Microchip Technology Inc.
ENERGY MONITORING PICtail™ PLUS
DAUGHTER BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 8
Conventions Used in this Guide ............................................................................ 9
Recommended Reading...................................................................................... 10
The Microchip Web Site ...................................................................................... 10
Customer Support ............................................................................................... 10
Document Revision History ................................................................................. 10
Chapter 1. Product Overview
1.1 Introduction ................................................................................................... 11
1.2 What the Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
Kit Includes ......................................................................................................... 12
1.3 Getting Started ............................................................................................. 12
Chapter 2. Hardware
2.1 Overview ...................................................................................................... 13
2.2 Input and Analog Front End ......................................................................... 15
2.3 Power Supply Circuit .................................................................................... 16
Chapter 3. Calculation Engine and Register Description
3.1 Calculation Engine Signal Flow Summary ................................................... 17
3.2 Complete Register List ................................................................................. 18
3.3 MODE ........................................................................................................... 19
3.4 STATUS ....................................................................................................... 20
3.5 CAL_CONTROL ........................................................................................... 21
3.6 LINE_CYC ................................................................................................... 22
3.7 LINE_CYC_CNT ......................................................................................... 22
3.8 RAW2_I_RMS .............................................................................................. 22
3.9 RAW_I_RMS ................................................................................................ 22
3.10 I_RMS ........................................................................................................ 22
3.11 RAW2_V_RMS ......................................................................................... 23
3.12 RAW_V_RMS ........................................................................................... 23
3.13 V_RMS ....................................................................................................... 23
3.14 LINE_FREQUENCY ................................................................................... 23
3.15 RAW_POWER_ACT ................................................................................. 24
3.16 POWER_ACT ............................................................................................. 24
3.17 POWER_APP ............................................................................................ 24
3.18 RAW_POWER_REACT ............................................................................. 24
© 2011 Microchip Technology Inc.
DS51933A-page 3
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.19 POWER_REACT ........................................................................................ 25
3.20 PERIOD ...................................................................................................... 25
3.21 ENERGY_ACT ........................................................................................... 25
3.22 ENERGY_APP .......................................................................................... 25
3.23 I_ABS_MAX ............................................................................................... 26
3.24 V_ABS_MAX .............................................................................................. 26
3.25 ENERGY_REACT ...................................................................................... 26
3.26 PHASE_COMPENSATION ........................................................................ 26
3.27 OFFSET_I_RMS ....................................................................................... 26
3.28 OFFSET_V_RMS ...................................................................................... 27
3.29 GAIN_I_RMS ............................................................................................. 27
3.30 GAIN_V_RMS ............................................................................................ 27
3.31 OFFSET_POWER_ACT .......................................................................... 27
3.32 GAIN_POWER_ACT .................................................................................. 27
3.33 OFFSET_POWER_REACT ...................................................................... 28
3.34 GAIN_POWER_REACT ............................................................................. 28
3.35 GAIN_ENERGY_ACT ................................................................................ 28
3.36 GAIN_ENERGY_APP ................................................................................ 28
3.37 GAIN_ENERGY_REACT ........................................................................... 28
3.38 CF_PULSE_WIDTH ................................................................................... 29
3.39 GAIN_DENR_ENERGY_ACT .................................................................... 29
3.40 GAIN_NUMR_ENERGY_ACT ................................................................... 29
3.41 MODE1_DEF ........................................................................................... 29
3.42 CAL_STATUS ............................................................................................ 30
3.43 MAXIMUM CURRENT ............................................................................. 30
3.44 CALIBRATION_VOLTAGE ...................................................................... 30
3.45 CALIBRATION_CURRENT ...................................................................... 30
3.46 CALIBRATION_FREQUENCY .................................................................. 31
3.47 METER_CONSTANT ................................................................................ 31
3.48 CALIBRATION_LINE_CYCLE .................................................................. 31
3.49 GAIN_DENR_ENERGY_REACT .............................................................. 31
3.50 GAIN_NUMR_ENERGY_REACT ............................................................. 31
3.51 PHASE_COMPENSATION_90 ................................................................. 31
3.52 CREEP_THRSHOLD_MINUTE ................................................................. 32
3.53 CREEP_THRSHOLD_SECOND ................................................................ 32
3.54 ENERGY_ACT_FORWARD ...................................................................... 32
3.55 ENERGY_ACT_REVERSE ........................................................................ 32
3.56 ENERGY_REACT_INDUCTIVE ................................................................. 32
3.57 ENERGY_REACT_CAPACITIVE ............................................................... 33
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 35
A.2 Schematics and PCB Layout ....................................................................... 35
A.3 Board – Schematic ...................................................................................... 36
A.4 Board – Schematic Isolation ....................................................................... 37
DS51933A-page 4
© 2011 Microchip Technology Inc.
A.5 Board – Top Silk .......................................................................................... 38
A.6 Board – Top Traces and Pads ..................................................................... 39
A.7 Board – Top Traces and Silk ....................................................................... 40
A.8 Board – Bottom Traces and Pads ................................................................ 41
A.9 Board – Bottom Silk ..................................................................................... 42
Appendix B. Bill of Materials (BOM)
Worldwide Sales and Service .................................................................................... 47
© 2011 Microchip Technology Inc.
DS51933A-page 5
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
DS51933A-page 6
© 2011 Microchip Technology Inc.
ENERGY MONITORING PICtail™ PLUS
DAUGHTER BOARD USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the
document.
For the most up-to-date information on development tools, see the MPLAB® IDE on-line help.
Select the Help menu, and then Topics to open a list of available online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
Energy Monitoring PICtail™ Plus Daughter Board. Items discussed in this chapter
include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
© 2011 Microchip Technology Inc.
DS51933A-page 7
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
DOCUMENT LAYOUT
This document describes how to use the Energy Monitoring PICtail™ Plus Daughter
Board as a development tool to emulate and debug firmware on a target board. The
manual layout is as follows:
• Chapter 1. “Product Overview” – Important information on the Energy Monitoring PICtail™ Plus Daughter Board, including a getting started section that
describes wiring the line and load connections.
• Chapter 2. “Hardware” – This chapter details the function blocks of the meter,
including the analog front end design, Phase Lock Loop (PLL) circuitry and power
supply design.
• Chapter 3. “Calculation Engine and Register Description” – This section
describes the digital signal flow for all power output quantities such as RMS current, RMS voltage, active power and apparent power. This section also includes
the calibration registers detail.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams.
• Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build the Energy
Monitoring PICtail™ Plus Daughter Board.
DS51933A-page 8
© 2011 Microchip Technology Inc.
Preface
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
Represents code supplied by
user
© 2011 Microchip Technology Inc.
Examples
File>Save
Press <Enter>, <F1>
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
var_name [,
var_name...]
void main (void)
{ ...
}
DS51933A-page 9
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
RECOMMENDED READING
This user’s guide describes how to use the Energy Monitoring PICtail™ Plus Daughter
Board. Other useful documents are listed below. The following Microchip documents
are available and recommended as supplemental reference resources.
PIC18F87J72 Family Data Sheet, “80-Pin, High-Performance Microcontrollers
with Dual Channel AFE, LCD Driver and nanoWatt Technology” (DS39979)
This data sheet provides detailed information regarding the PIC18F87J72 device.
AN994 Application Note “IEC61036 Meter Design using the MCP3905A/06A
Energy Metering Devices” (DS00994)
This application note documents the design decisions associated with using the
MCP390X devices for energy meter design and IEC compliance, which are directly
related to the PIC18F87J72 and other PIC® microcontroller-based meter designs.
“Single-Phase Energy Meter Calibration User’s Guide” (DS51964)
This document describes the software and calibration methods associated to the
PIC18F87J72 and how to communicate to, and use the device registers described in
this document for energy monitoring and calibration.
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at: http://support.microchip.com
DOCUMENT REVISION HISTORY
Revision A (June 2011)
• Initial Release of this Document.
DS51933A-page 10
© 2011 Microchip Technology Inc.
ENERGY MONITORING PICtail™ PLUS
DAUGHTER BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The Energy Monitoring PICtail™ Plus Daughter Board is a power monitor circuit that
uses the highly integrated PIC18F87J72 single chip energy meter IC. This low-cost
design does not use any transformers and requires few external components. It
includes both an isolated USB connection for meter calibration and access to the
device power calculation, and an isolated PICtail Plus connection for Explorer 16
Development Board and other board developments.
The system calculates the Active Energy, Reactive Energy (both forward and reverse),
Active Power, Reactive Power, Apparent Power, Root Mean Square Voltage (VRMS),
Root Mean Square Current (IRMS), and other typical power quantities.
The Microchip Energy Meter 1-Phase Software used with this board calibrates and
monitors the system. It can also be used to create custom calibration setups. For some
accuracy requirements only a single point calibration may be required. The software
offers an automated step by step calibration process that can be used to quickly
calibrate energy meters.
FIGURE 1-1:
© 2011 Microchip Technology Inc.
Energy Monitoring PICtail™ Plus Daughter Board.
DS51933A-page 11
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
1.2
WHAT THE ENERGY MONITORING PICtail™ PLUS DAUGHTER BOARD
USER’S GUIDE KIT INCLUDES
The Energy Monitoring PICtail™ Plus Daughter Board Kit includes:
• Energy Monitoring PICtail™ Plus Daughter Board (102-00330)
• Important Information Sheet
1.3
GETTING STARTED
The Energy Monitoring PICtail™ Plus Daughter Board uses a 2A load for calibration
current, and a maximum current (IMAX) of 15A.
All connections described in this section are dependent on the choice of the current
sensing element. A secondary external transformer may be required in higher current
meter designs.
To test a calibrated meter, the following connections apply for a two-wire connection.
1.3.1
Step 1: Wiring connections
J5 and J6 are the line and load connections of the meter.
1.3.2
Step 2: Connect the board to a PC running the energy meter
software
The meter will turn on when the line connection has 110V–240V connected. The PC
software will show the total energy accumulated.
DS51933A-page 12
© 2011 Microchip Technology Inc.
ENERGY MONITORING PICtail™ PLUS
DAUGHTER BOARD USER’S GUIDE
Chapter 2. Hardware
2.1
OVERVIEW
Figure 2-1 shows the Energy Monitoring PICtail Plus Daughter Board:
9
11 10
8
1
7
6
2
5
3
™
4
Legend:
FIGURE 2-1:
1
=
PICtail™ Plus connector (isolated)
2
=
USB connection for “Energy Meter Software” on PC (isolated)
3
=
Serial Connection Selection (Explorer 16 or USB)
4
=
High voltage power supply (non-isolated)
5
=
Line connection (male - 110 → 240V)
6
=
Shunt, 3000 µW
7
=
Load connection (female)
8
=
Reset switch for PIC18F87J72
9
=
Output Pulses for calibration in units of imp/kWh (calibrated to 3200 imp/kWh)
10
=
EEPROM for calibration and energy meter usage storage
11
=
PIC18F87J72
Hardware Components.
© 2011 Microchip Technology Inc.
DS51933A-page 13
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
Figure 2-2 shows the digital connections of the Energy Monitoring PICtail Plus
Daughter Board.
PIC18F87J72
RD5
RD6
Active
Power
Reactive
Power
PICtail™
Plus
Connector
(ISOLATED)
RC7/RX
RC6/TX
Bidirectional
Octo-coupler for
Isolation
ACSL-6210
RC3/SCK
RC4/SDI
RC5/SDO
RA1
USB to UART
Converter
Mini – USB
Connector
MCP2200
(ISOLATED)
SCK
SDO
SDI
CS
25LC256
SPI – EEPROM
FIGURE 2-2:
DS51933A-page 14
Simplified Schematic for Digital Connections.
© 2011 Microchip Technology Inc.
Hardware
2.2
INPUT AND ANALOG FRONT END
The Energy Monitoring PICtail Plus Daughter Board comes populated with components designed for 110–240V line voltage. The shunt sits on the low or neutral side of
a two-wire system.
The line of phase side of the two-wire system goes into a resistor divider on the voltage
channel input. Anti-aliasing low-pass filters will be included on both differential
channels. The voltage channel uses two 330 kΩ resistors to achieve a divider ratio of
664:1. For a line voltage of 230 VRMS, the channel 1 input signal size will be
490 mVPEAK.
150 FB (Note)
1.0 kΩ
NEUTRAL
CH0+
68 nF
Shunt
A
150 FB
(Note)
1.0 kΩ
CH0-
NEUTRAL
68 nF
PIC18F87J72
A
330 kΩ 330 kΩ
CH1+
LINE
68 nF
1.0 kΩ
A
A
1.0 kΩ
CH1+
68 nF
A
Note:
FIGURE 2-3:
A
FB = ferrite beads. Ferrite beads have an impedance of the
specified value at 100 MHz.
Analog Input Circuitry.
© 2011 Microchip Technology Inc.
DS51933A-page 15
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
2.3
POWER SUPPLY CIRCUIT
The power supply circuit for the Energy Monitoring PICtail Plus Daughter Board uses
a half-wave rectified signal, a single +5V voltage regulator and a 3.3V LDO.
1
3
2
+9V DC Power In
(DO NOT USE WHILE
METER IS CONNECTED
TO MAINS!)
150 FB
1.5 µF
200 mA
B
33Ω, 5W
L
470 µF +
N
B
B
B
+5V
In
Out
MCP1702
GND
100 nF
B
A
10 µF
+3.3V
+5V
In
Out
MCP1700
GND
100 nF
B
FIGURE 2-4:
DS51933A-page 16
B
B
B
10 µF
100 nF
B
B
Simplified Power Supply Circuit.
© 2011 Microchip Technology Inc.
ENERGY MONITORING PICtail™
PLUS DAUGHTER BOARD
Chapter 3. Calculation Engine and Register Description
3.1
CALCULATION ENGINE SIGNAL FLOW SUMMARY
RMS voltage, RMS current, Active Power and Apparent Power, and the calibration output pulse are all calculated through the following process described in Figure 3-1. The
calibration registers for each calculation are shown as well as the output registers.
OFFSET_I_RMS:16
16/24-bit ΔΣ ADC
2
Apparent Power
RMS Current
X
Σ
Reactive Power
GAIN_
COMPENSATION
_90:8
90° with
Φ Correction
OFFSET_POWER_REACT:32
X
Σ
Active Power
16/24-bit DS ADC
Φ
ADC
PHASE_COMPENSATION:8
VOLTAGE
OFFSET_POWER_ACT:32
OFFSET_V_RMS:16
GAIN_DENR_ENERGY_ACT:8
GAIN_NUMR_ENERGY_ACT:16
X2
Σ
RMS Voltage
Digital to
Frequency
Converter
/
FIGURE 3-1:
X
GAIN_ENERGY_APP:16
X
GAIN_ENERGY_ACT:16
X
GAIN_POWER_APP:16
X
GAIN_POWER_ACT:16
X
GAIN_I_RMS:16
X
GAIN_V_RMS:16
GAIN_ENERGY_REACT:16
GAIN_POWER_REACT:16
X
X
kVAh
ENERGY_APP:32
ENERGY_ACT:32
kWh
kVA
POWER_APP:32
kW
POWER_ACT:32
A
I_RMS:16
V
V_RMS:16
ENERGY_REACT:32
POWER_REACT:32
kVAR
kVARh
Σ
imp/kVARh
imp/kWh
Σ
1/METER_CONSTAT
Digital to
Frequency
Converter
GAIN_DENR_ENERGY_REACT:8
GAIN_NUMR_ENERGY_REACT:16
/
1/METER_CONSTAT
X
Σ
X
ADC
CURRENT
PIC18F87J72 Calculation Engine Signal Flow
© 2011 Microchip Technology Inc.
DS51933A-page 17
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.2
COMPLETE REGISTER LIST
TABLE 3-1:
INTERNAL REGISTER SUMMARY
Name
Bits
MODE
8
STATUS
8
R/W
Description
R/W Configuration register for operating mode of the meter.
R
STATUS register.
CAL_CONTROL
8
R/W Configuration register for calibration control.
LINE_CYC
16
R/W 2n number of line cycles to be used during energy accumulation.
LINE_CYC_CNT
16
R
Counter for number of line cycles.
RAW2_I_RMS
64
R
Raw2 RMS value from the current A/D converter in LSBs.
RAW_I_RMS
16
R
Raw RMS value from the current A/D converter in LSBs.
I_RMS
16
R
RMS value of the current, post Calibration.
RAW2_V_RMS
64
R
Raw2 RMS value from the voltage A/D converter in LSBs.
RAW_V_RMS
16
R
Raw RMS value from the voltage A/D converter in LSBs.
V_RMS
16
R
RMS value of the voltage, post Calibration.
LINE_FREQUENCY
16
R
Line Frequency.
RAW_POWER_ACT
64
R
Raw Active Power.
POWER_ACT
32
R
Final Active Power, units in watts (W).
POWER_APP
32
R
Final Apparent Power, units in volt-amperes (VA).
RAW_POWER_REACT
64
R
Raw Reactive Power.
POWER_REACT
32
R
Final Reactive Power, units in volt-amperes-reactive (VAR).
PERIOD
32
R
Period register.
ENERGY_ACT
32
R
Final Active Energy accumulated.
RAW_ENERGY_ACT
64
R
Raw Active Energy accumulated.
ENERGY_APP
32
R
Final Apparent Energy accumulated.
RAW_ENERGY_APP
64
R
Raw Apparent Energy accumulated.
I_ABS_MAX
8
R
Not implemented.
V_ABS_MAX
8
R
Not implemented.
ENERGY_REACT
32
R
Final Reactive Energy accumulated.
RAW_ENERGY_REACT
64
R
Final Reactive Energy accumulated.
PHASE_COMPENSATION
OFFSET_I_RMS
8
16
R/W Phase compensation between voltage and current.
R/W Offset adjustment for RMS current reading.
OFFSET_V_RMS
16
R/W Offset adjustment for RMS voltage reading.
GAIN_I_RMS
16
R/W Gain adjustment for RMS current.
GAIN_V_RMS
16
R/W Gain adjustment for RMS voltage.
OFFSET_POWER_ACT
32
R/W Active Power offset.
GAIN_POWER_ACT
16
R/W Active Power gain adjust.
OFFSET_POWER_REACT
32
R/W Offset correction for Reactive Power.
GAIN_POWER_REACT
16
R/W Reactive Power gain adjust to produce X VAR/LSB.
GAIN_ENERGY_ACT
16
R/W Not implemented.
GAIN_ENERGY_APP
16
R/W Not implemented.
GAIN_ENERGY_REACT
16
R/W Not implemented.
CF_PULSE_WIDTH
8
R/W Defines CF pulse width from 0 to 255 x 0.8192 ms (0.209s).
GAIN_DENR_ENERGY_ACT
8
R/W Active Energy Pulse Output correction factor.
GAIN_NUMR_ENERGY_ACT
16
R/W Active Energy Pulse Output correction factor.
MODE1_DEF
16
R/W Power-Up Configuration Register.
CAL_STATUS
16
R/W Calibration Status.
DS51933A-page 18
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
TABLE 3-1:
INTERNAL REGISTER SUMMARY (CONTINUED)
Name
Bits
R/W
Description
MAXIMUM CURRENT
16
R/W Maximum current of the meter (IMAX).
CALIBRATION_VOLTAGE
16
R/W Calibration Voltage of the meter (VCAL).
CALIBRATION_CURRENT
16
R/W Calibration Current of the meter (ICAL).
CALIBRATION_FREQUENCY
16
R/W Calibration Frequency of the meter.
METER_CONSTANT
16
R/W Meter Constant in imp/kWh or imp/kVARh.
CALIBRATION_LINE_CYCLE
16
R/W Number of line cycles for calibration.
GAIN_DENR_ENERGY_REACT
8
R/W Reactive Energy Pulse Output correction factor.
GAIN_NUMR_ENERGY_REACT
16
R/W Reactive Energy Pulse Output correction factor.
PHASE_COMPENSATION_90
8
R/W Phase delay for Reactive Power.
CREEP_THRSHOLD_MINUTE
8
R/W No Load threshold time (minutes).
CREEP_THRSHOLD_SECOND
ENERGY_ACT_FORWARD
8
32
R/W No Load threshold time (seconds).
R/W Forward Active Energy.
ENERGY_ACT_REVERSE
32
R/W Reverse Active Energy.
ENERGY_REACT_INDUCTIVE
32
R/W Inductive Reactive Energy.
ENERGY_REACT_CAPACITIVE
32
R/W Capacitive Reactive Energy.
3.3
MODE
The MODE register controls the operation of the energy meter. The bit functions are
defined by the table below.
REGISTER 3-1:
MODE REGISTER
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
—
CF
ABSOLUTE
PHASE
CREEP
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-4
Unimplemented: Read as ‘0’.
bit 3
CF: Active Energy CF Phase Enable bit
1 = Bit = 1 Phase is enabled to be accumulated into the total energy registers or CF pulse output
0 = Bit = 0 Phase is DISABLED and is not accumulated into the total energy registers or CF pulse
output
bit 2
ABSOLUTE Positive Only Energy Accumulation Mode bit
1 = Bit = 1 Positive energy only
0 = Bit = 0 Both negative and positive energy accumulated (negative energy is subtracted)
bit 1
PHASE: Phase bit
1 = Single Point Phase Correction
0 = Multi-Point Phase Correction (future)
bit 0
CREEP: No-Load Threshold bit
1 = Enabled
0 = Disabled
© 2011 Microchip Technology Inc.
DS51933A-page 19
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.4
STATUS
The STATUS register contains the operational status of the energy meter. The bit
functions are defined in the table below.
REGISTER 3-2:
STATUS REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
R
U-0
—
—
—
—
—
—
PH_S
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 7-2
Unimplemented: Read as ‘0’
bit 1
PH_S: Phase Sign bit
1 = CT may be in backward (if enabled)
0 = Operation normal
bit 0
Unimplemented: Read as ‘0’
DS51933A-page 20
x = Bit is unknown
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
3.5
CAL_CONTROL
This is the Calibration mode control register. Bit 0 enables the Calibration mode. In this
mode, the power meter operates as normal, but no updates are made to the voltage,
current, power or energy registers as long as bit 1 is low. When bit 1 is set high, the
registers are updated for LINE_CYC line cycles (only power and energy registers are
updated). After this time, bit 1 is set low by the PIC18F87J72 and the update of the registers will stop. This allows the calibration software to set bit 0, clear the registers, set
bit 1 and start reading the desired registers, as well as the CAL_CONTROL register, to
check the status of bit 1. When bit 1 goes low, the LINE_CYC line cycles have passed
and the registers are final. Note that bit 0 takes effect immediately, and bit 1 will take
effect on the very next line cycle. When bit 1 goes low, all registers will be ready to read.
REGISTER 3-3:
CAL_CONTROL REGISTER (NOTE 1)
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
Reserved
R/W-0
R/W-0
CAL_UPDATE CAL_MODE
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-3
Unimplemented: Read as ‘0’
bit 2
Reserved:
bit 1
CAL_UPDATE: Calibration Update bit
Power and energy registers updated for LINE_CYC line cycles when cleared. Bit must be set for registers to begin updating, which starts on the next line cycle after bit is set.
1 = When the CAL_MODE bit is set, set the CAL_UPDATE bit to enable update of power and energy
registers starting on next line cycle. Bit = 1 Single Point Phase Correction
0 = When the CAL_MODE bit is set and the CAL_UPDATE bit has been set, the CAL_UPDATE bit
will be cleared after LINE_CYC line cycles. At that point, all registers will be updated and no
further updates will be done until the CAL_UPDATE bit is set again, or the CAL_MODE bit is
cleared.
bit 0
CAL_MODE: Calibration Mode bit
This bit enables Calibration mode.
1 = Calibration mode enabled
0 = Calibration mode disabled
Note 1:
This register is used in Multi-Point and Single Point Calibration modes only.
© 2011 Microchip Technology Inc.
DS51933A-page 21
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.6
LINE_CYC
Name
LINE_CYC
Bits
Cof
16
R/W
Number of line cycles as a power of two. A setting of 0 indicates 20 or one line cycle.
A setting of 1 is two line cycles (21), a setting of 2 is four lines cycles (22), up to a setting
of eight, which is 256 line cycles. When written, this register will not take effect until the
previous number of line cycles has been acquired.
3.7
LINE_CYC_CNT
Name
Bits
Cof
LINE_CYC_CNT
16
R
This register counts from 0 and finishes at 2 (LINE_CYC - 1). Then re-starts at 0, where
LINE_CYC represents the value in the LINE_CYC register.
3.8
RAW2_I_RMS
Name
RAW2_I_RMS
Bits
Cof
64
R
This register is the square of the raw RMS value from the current A/D converter in
LSBs. By definition, this register will always contain a positive value, including the situation where power is negative from a backwards CT or otherwise. This register is
overwritten every LINE_CYC line cycle and is written only once, if the calibration is
enabled.
3.9
RAW_I_RMS
Name
RAW_I_RMS
Bits
Cof
16
R
This register is the raw RMS value from the current A/D converter in LSBs (square root
of the top 32-bits of (RAW2_I_RMS + OFFSET_I_RMS). By definition, this register will
always contain a positive value (even if the CT is in backwards). This register is overwritten every LINE_CYC line cycle and is written only once, if the calibration is enabled.
3.10
I_RMS
Name
I_RMS
Bits
Cof
16
R
This register is the RMS value of phase A current in X A/LSB, as determined by the
value in the GAIN_I_RMS register. When displaying the RMS current, multiply the (decimal) value in these registers by X to get the display value in Amperes. This register is
overwritten every LINE_CYC line cycle (written only once if the calibration is enabled).
DS51933A-page 22
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
3.11
RAW2_V_RMS
Name
RAW2_V_RMS
Bits
Cof
64
R
This register is the square of the raw RMS value from the voltage A/D converter in
LSBs. By definition, it will always contain a positive value. This register is overwritten
every LINE_CYC line cycle (written only once if the calibration is enabled).
3.12
RAW_V_RMS
Name
RAW_V_RMS
Bits
Cof
16
R
This is the raw RMS value from the voltage A/D converter in LSBs (square root of the
top 32-bits of RAW2_V_RMS + OFFSET_V_RMS. By definition, this register will
always contain a positive value. The register is overwritten every LINE_CYC line cycle
(written only once if the calibration is enabled).
3.13
V_RMS
Name
V_RMS
Bits
Cof
16
R
This register is the RMS value of the voltage, in X 0.01 V/LSB, as determined by the
value in the GAIN_V_RMS register. When displaying the RMS voltage, assume a calibrated meter exists and multiply the (decimal) value in these registers by X to get the
display value in Volts. This register is overwritten every LINE_CYC line cycle (written
only once if the calibration is enabled).
3.14
LINE_FREQUENCY
Name
Bits
Cof
LINE_FREQUENCY
16
R
This register holds the measured line frequency using the zero crossing technique.
© 2011 Microchip Technology Inc.
DS51933A-page 23
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.15
RAW_POWER_ACT
Name
Bits
Cof
RAW_POWER_ACT
64
R
This register is the raw active power, as it represents the sum of current A/D value times
voltage A/D value results over LINE_CYC line cycles (each line cycle has 128 results).
Each current times voltage multiplication results in a 32-bit word. There are up to 256
line cycles with each line cycle being 128 results, and each result being 32-bit. Thus,
48 bits are needed. This is the register to be read during calibration for calculating the
offset and gain values associated with active power, OFFSET_POWER_ACT and
GAIN_POWER_ACT. This register is overwritten every line cycle, however if the calibration is enabled, the updates will stop once the LINE_CYC line cycles have elapsed.
3.16
POWER_ACT
Name
Bits
Cof
POWER_ACT
32
R
This register is the value for active power. The goal of the calibration is to get this register value to equal X W/LSB. This is done with the OFFSET_POWER_ACT and
GAIN_POWER_ACT registers. When displaying the power, multiply the (decimal)
value in this register by X to get the display value in Watts. This register is overwritten
every LINE_CYC line cycle (written only once if the calibration is enabled).
3.17
POWER_APP
Name
Bits
Cof
POWER_APP
32
R
This is the value of the apparent power. The goal of the calibration is to get this value
to equal X VA/LSB. This is done with the GAIN_POWER_APP registers. When displaying the power for phase A, multiply the (decimal) value in this register by X to get the
display value in Watts. This register is overwritten every LINE_CYC line cycle (written
only once if the calibration is enabled).
3.18
RAW_POWER_REACT
Name
Bits
Cof
RAW_POWER_REACT
64
R
This is the raw reactive power. This register is read during the calibration for calculating
the gain values associated with the reactive power and GAIN_POWER_REACT. This
register is overwritten every LINE_CYC line cycle (written only once if the calibration is
enabled). This register is accumulated once a line-cycle basis.
DS51933A-page 24
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
3.19
POWER_REACT
Name
POWER_REACT
Bits
Cof
32
R
This is the value for reactive power. The goal is to get this value to equal X VAR/LSB.
This is done with the GAIN_POWER_REACT register. When displaying the power,
multiply the (decimal) value in this register by X to get the display value in Watts. This
register is overwritten every LINE_CYC line cycle (written only once if the calibration is
enabled).
3.20
PERIOD
Name
PERIOD
Bits
Cof
32
R
This 32-bit register represents the total number of clock ticks that elapsed over the most
recent LINE_CYC line cycle. Each LSB represents 1.6 µs with a 40 MHz clock on the
microcontroller. This register is overwritten every LINE_CYC line cycle (written only
once if the calibration is enabled).
3.21
ENERGY_ACT
Bits
Cof
ENERGY_ACT
Name
32
R
RAW_ENERGY_ACT
64
R
The design updates the Energy register using the CF Pulse blink output count. In this
method, the Energy registers increments every pulse by a value equal to
1/(METER_CONSTANT).
ENERGY_W = ENEGRY_W + (1/METER_CONSTANT)
The gain calibration registers GAIN_NUMR_ENERGY_ACT and
GAIN_DENR_ENERGY_ACT hold good for this method also.
3.22
ENERGY_APP
Name
Bits
Cof
ENERGY_APP
32
R
RAW_ENERGY_APP
64
R
These two registers represent the total apparent energy accumulated so far.
© 2011 Microchip Technology Inc.
DS51933A-page 25
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.23
I_ABS_MAX
Name
I_ABS_MAX
Bits
Cof
8
R
NOT IMPLEMENTED IN THIS FIRMWARE/SOFTWARE RELEASE.
3.24
V_ABS_MAX
Name
V_ABS_MAX
Bits
Cof
8
R/W
NOT IMPLEMENTED IN THIS FIRMWARE/SOFTWARE RELEASE.
3.25
ENERGY_REACT
Bits
Cof
ENERGY_REACT
Name
32
R
RAW_ENERGY_REACT
64
R
The design updates the reactive energy registered using the CF Pulse blink output
count too. In this method, the Energy registers increments every pulse by a value equal
to 1/(METER_CONSTANT).
ENERGY_REACT = ENERGY_REACT + (1/METER_CONSTANT)
The gain calibration registers GAIN_NUMR_ENERGY_ACT and
GAIN_DENR_ENERGY_ACT hold good for this method also.
3.26
PHASE_COMPENSATION
Name
Bits
Cof
PHASE_COMPENSATION
8
R/W
Phase delay, signed 8-bit value, provides the phase compensation by sampling time/2.
3.27
OFFSET_I_RMS
Name
OFFSET_I_RMS
Bits
Cof
16
R/W
Square of the offset for RMS current reading, signed 16-bit value. Note that this value
should be similar to the ADC’s noise squared. At a gain of 1, the noise will be about
1 LSB, 2 LSBs at a gain of 2, 6 LSBs at a gain of 8, 11 LSBs at a gain of 16, and
22 LSBs at a gain of 32. There may be other sources of noise. Using the square of the
offset allows for higher accuracy. The value will be added before the square root is
taken when calculating the final RMS value.
DS51933A-page 26
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
3.28
OFFSET_V_RMS
Name
Bits
Cof
16
R/W
OFFSET_V_RMS
Square of offset for RMS voltage reading, signed 8-bit value. Note that this value
should be similar to the ADC’s noise squared. For the voltage channel, the noise will
be about 1 LSB. There may be other sources of noise. Using the square of the offset
allows for higher accuracy. The value will be added before the square root is taken
when calculating the final RMS value.
3.29
GAIN_I_RMS
Name
Bits
Cof
GAIN_I_RMS
16
R/W
Current gain to produce X A/LSB. The value is always less than one (for example,
32,767 = 0.9999695).
3.30
GAIN_V_RMS
Name
Bits
Cof
GAIN_V_RMS
16
R/W
Voltage gain to produce 0.1 V/LSB in the V_RMS register. The value is always less than
one (for example, 32,767 = 0.9999695).
3.31
OFFSET_POWER_ACT
Name
Bits
Cof
OFFSET_POWER_ACT
32
R/W
Active power offset (this is a straight offset, not the square, as with voltage and current).
A much larger value is needed because the power is a running sum. This is a 32-bit
signed value.
3.32
GAIN_POWER_ACT
Name
Bits
Cof
GAIN_POWER_ACT
16
R/W
Active power gain to produce X W/LSB. The value is always less than one (for example,
32,767 = 0.9999695).
© 2011 Microchip Technology Inc.
DS51933A-page 27
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.33
OFFSET_POWER_REACT
Name
Bits
Cof
OFFSET_POWER_REACT
32
R/W
Reactive power offset (this is a straight offset, not the square, as with voltage and current). A much larger value is needed because the power is a running sum. This is a
32-bit signed value.
3.34
GAIN_POWER_REACT
Name
Bits
Cof
GAIN_POWER_REACT
16
R/W
Reactive power gain to produce X W/LSB. The value is always less than one (for example, 32,767 = 0.9999695).
3.35
GAIN_ENERGY_ACT
Name
Bits
Cof
GAIN_ENERGY_ACT
16
R/W
Active energy gain to produce X Wh/LSB. The value is always less than one (for example, 32,767 = 0.9999695).
3.36
GAIN_ENERGY_APP
Name
Bits
Cof
GAIN_ENERGY_APP
16
R/W
Apparent energy gain to produce X VAh/LSB. The value is always less than one (for
example, 32,767 = 0.9999695).
3.37
GAIN_ENERGY_REACT
Name
Bits
Cof
GAIN_ENERGY_REACT
16
R/W
Reactive energy gain to produce X VARh/LSB. The value is always less than one (for
example, 32,767 = 0.9999695).
DS51933A-page 28
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
3.38
CF_PULSE_WIDTH
Name
Bits
Cof
CF_PULSE_WIDTH
8
R/W
Defines the CF pulse width from 0 to 255. Length of width is valued
* 8 * (1/LINE_FREQUENCY)/128) ms. A maximum of 0.266 seconds for 60 Hz and
0.319 seconds for 50 Hz.
If the value is 0, no CF pulse is produced.
3.39
GAIN_DENR_ENERGY_ACT
Name
Bits
Cof
GAIN_DENR_ENERGY_ACT
8
R/W
8-bit signed value. Represents the number of shifts for active power energy register
ENERGY_ACT before GAIN_DENR_ENERGY_ACT is applied.
3.40
GAIN_NUMR_ENERGY_ACT
Name
Bits
Cof
GAIN_NUMR_ENERGY_ACT
16
R/W
Active power gain to produce a specified pulses per watt-hour. The value is always less
than one (for example, 32,767 = 0.9999695).
3.41
MODE1_DEF
Name
MODE1_DEF
Bits
Cof
16
R/W
MODE default power-up settings. On power-up, this register will be read and placed
into the MODE register.
© 2011 Microchip Technology Inc.
DS51933A-page 29
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.42
CAL_STATUS
The CAL_STATUS register holds the calibration status for each individual phase.
Broken down by phase, these are the values that can be calibrated. Each bit has the
status of 0 = NOT Calibrated, 1 = CALIBRATED.
REGISTER 3-4:
R/W-0
CAL_STATUS REGISTER
R/W-0
PHASE_COM OFFSET_I_
PENSATION
RMS
R/W-0
U-0
U-0
OFFSET_V_
RMS
—
—
R/W-0
R/W-0
R/W-0
GAIN_I_RMS GAIN_V_RMS OFFSET_PO
WER_ACT
bit 15
bit 8
U-0
R/W-0
U-0
U-0
U-0
R/W-0
U-0
U-0
—
GAIN_POW
ER_ACT
—
—
—
GAIN_POWE
R_REACT
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-0
3.43
x = Bit is unknown
All bits: Calibration Register Status bits
1 = This register has been calibrated
0 = This register is NOT calibrated
MAXIMUM CURRENT
Name
MAXIMUM_CURRENT
Bits
Cof
16
R/W
This register holds the maximum current for the meter (IMAX).
3.44
CALIBRATION_VOLTAGE
Name
Bits
Cof
CALIBRATION_VOLTAGE
16
R/W
This register holds the calibration voltage of the meter (VCAL).
3.45
CALIBRATION_CURRENT
Name
Bits
Cof
CALIBRATION_CURRENT
16
R/W
This register holds the calibration current of the meter (ICAL).
DS51933A-page 30
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
3.46
CALIBRATION_FREQUENCY
Name
Bits
Cof
CALIBRATION_FREQUENCY
16
R/W
This register holds the calibration frequency of the meter.
3.47
METER_CONSTANT
Name
Bits
Cof
16
R/W
METER_CONSTANT
This register holds the meter constant in imp/kWh or imp/kVARh.
3.48
CALIBRATION_LINE_CYCLE
Name
Bits
Cof
CALIBRATION_FREQUENCY
16
R/W
This register holds the number of line cycles used during the calibration.
3.49
GAIN_DENR_ENERGY_REACT
Name
Bits
Cof
GAIN_DENR_ENERGY_REACT
8
R/W
8-bit signed value. Represents the number of shifts for reactive power energy register,
before GAIN_NUMR_ENERGY_REACT is applied.
3.50
GAIN_NUMR_ENERGY_REACT
Name
Bits
Cof
GAIN_NUMR_ENERGY_REACT
16
R/W
Reactive power gain to produce a specified pulse per VAR-hour. The value is always
less than one (for example, 32,767 = 0.9999695).
3.51
PHASE_COMPENSATION_90
Name
Bits
Cof
PHASE_COMPENSATION_90
8
R/W
Phase delay for reactive power, signed 8-bit value, sampling time/2.
© 2011 Microchip Technology Inc.
DS51933A-page 31
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
3.52
CREEP_THRSHOLD_MINUTE
Name
Bits
Cof
CREEP_THRSHOLD_MINUTE
8
R/W
This 8-bit register holds the decimal representation of the creep threshold time in
minutes (total creep is minutes + seconds register).
3.53
CREEP_THRSHOLD_SECOND
Name
Bits
Cof
CREEP_THRSHOLD_SECOND
8
R/W
This 8-bit register holds the decimal representation of the creep threshold time in
seconds (total creep is minutes + seconds register).
3.54
ENERGY_ACT_FORWARD
Name
ENERGY_ACT_FORWARD
Bits
Cof
32
R/W
This 32-bit register is the accumulated active energy in the forward direction only.
The design updates the Energy register using the CF Pulse blink output count. In this
method, the Energy registers increments every pulse by a value equal to
1/(METER_CONSTANT).
3.55
ENERGY_ACT_REVERSE
Name
ENERGY_ACT_REVERSE
Bits
Cof
32
R/W
This 32-bit register is the accumulated active energy in the reverse direction only.
The design updates the Energy register using the CF Pulse blink output count. In this
method, the Energy registers increments every pulse by a value equal to
1/(METER_CONSTANT).
3.56
ENERGY_REACT_INDUCTIVE
Name
Bits
Cof
ENERGY_REACT_INDUCTIVE
32
R/W
This 32-bit register is the accumulated reactive energy in the inductive quadrants only.
The design updates the Energy register using the CF Pulse blink output count. In this
method, the Energy registers increments every pulse by a value equal to
1/(METER_CONSTANT).
DS51933A-page 32
© 2011 Microchip Technology Inc.
Calculation Engine and Register Description
3.57
ENERGY_REACT_CAPACITIVE
Name
Bits
Cof
ENERGY_REACT_CAPACITIVE
32
R/W
This 32-bit register is the accumulated reactive energy in the capacitive quadrants only.
The design updates the Energy register using the CF Pulse blink output count. In this
method, the Energy registers increments every pulse by a value equal to
1/(METER_CONSTANT).
© 2011 Microchip Technology Inc.
DS51933A-page 33
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
NOTES:
DS51933A-page 34
© 2011 Microchip Technology Inc.
ENERGY MONITORING PICtail™ PLUS
DAUGHTER BOARD USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the Energy Monitoring
PICtail™ Plus Daughter Board User’s Guide:
•
•
•
•
•
•
•
A.2
Board – Schematic
Board – Schematic Isolation
Board – Top Silk
Board – Top Traces and Pads
Board – Top Traces and Silk
Board – Bottom Traces and Pads
Board – Bottom Silk
SCHEMATICS AND PCB LAYOUT
The layer order is shown in Figure A-1.
Top Layer
Bottom Layer
FIGURE A-1:
© 2011 Microchip Technology Inc.
Layer Order.
DS51933A-page 35
4
3
2
N
LINE
L
N
G
CP4
J5
1
3
2
SHUNT1
A
200mA
F1
N
N_OUT
2
3
1
MOV1
275VAC
150
L2
PJ-102A
J10
GNDB
GNDB
LINE
BVS-A-R001-1
GNDB
CP1
CP2
0603
R44
0603
GNDA
C4
1.5UF 250VAC
L5
300mA/150
POWER
ECQ-U2A155ML
GNDB
N_OUT
332K, 1%
GNDA
R39
332K, 1%
L4
300mA/150
N
G
L
C35
68NF
NPO
0805
C31
68NF
NPO
0805
TP1
GNDB
D1
(LOW)
SMBJ8.5A
33 Pulse Rated
R18
1206
1206
CP3
GNDA
GNDA
AC05000003309JAC00
3
2
1
J6
LINE
1K TF
R42
1K TF
R41
1
C28
1K
B
GNDB
PMEG3005CT
C14
GNDA
4
IN
IN
GNDA
1206
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
Q2
GNDB
GNDB
SDCH1+
SDCH1-
150
L1
OUT
GNDA
3
C9
100NF
GNDB
SEG20/AN7/C1OUT/RF2
SEG21/AN8/C2INB/RF3
SEG22/AN9/C2INA/RF4
SEG23/AN10/C1INB/CVR
SEG24/AN11/C1INA/RF6
SEG25/AN5/SS/RF7
VDDCORE/VCAP
VSS
RG4/SEG26
MCLR
VLCAP2/RG3
VLCAP1/RX2/DT2/RG2
RG1/TX2/CK2
LCDBIAS0/RG0
LCDBIAS1/RE0
LCDBIAS2/RE1
SDCH0-
SDCH0+
MCP1702T-5002E/MB
C26
2
68NF
NPO
GNDA
1206
1K
0603
0603
0603
0603
0603
MPU_MCLR
C17
47NF
47NF
C16
47NF
R37
GNDB
C24
470UF
1206
1206
D5
330K
R24
330K
L3
R25
GNDA
0603
68NF
NPO
R38
300mA/150
GNDB
C19
10uF
C13
47NF
1
C11
NONE
0603
47NF
3.3V
0603
0603
79
R22
C
5V
10
78
C
GNDB
10uF
C8
3.3V 3.3V GNDB
0603
5V
GNDA
1206
C30
10uF
0603
C34
AFE_SYNC
U8
70
PIC18F87J72
GNDA
100NF
C6
3.3V GNDB
GNDB
GNDA
0603
3
GNDA
0603
C36
100NF
0603
3.3V
IN
Q1
GNDB
C5
100NF
D
GNDB
0603
AFE_F0/CS
GNDB
C41
10uF
3.3V
0603
GNDB
3.3V
SDCLKI
SEG13/CCP1/RC2
SEG17/SCK/SCL/RC3
SEG16/SDI/SDA/RC4
SEG12/SDO1/RC5
PGD/KBI3/RB7
VDD
OSC1/CLKI/RA7
OSC2/CLKO/RA6
VSS
PGC/KBI2/RB6
SEG29/KBI1/RB5
SEG11/KBI0/RB4
SEG10/CTED2/INT3/RB3
SEG9/CTED1/INT2/RB2
SEG8/RTCC/INT1/RB1
SEG30/INT0/RB0
SDCS
SDSCK
SDSDO
0603
D
100NF
0603
27PF
GNDB
GNDB
2
27PF
U9
0603
1
MEM_CS
ACTIVE
POWER
OUT
GNDB
VDD
4.7k
R16
MPU_SDI
POR
0603
VSS
WP
SO
CS
VCC
SI
SCK
HOLD
1K
R15
0603
EEPROM
4
3
2
1
U3
25AA256
ACTIVE_POWER
GNDB
3.3V
8
5
6
7
J1
C1
100NF
100NF
C21
C12
GNDB
3.3V
0603
GNDB
3.3V
AFE_CLKIN
AFE_CLKIN
MPU_SCK
MPU_SDI
MPU_SDO
MPU_PGD
3.3V
GNDB
MPU_PGC
100NF
41
42
43
44
45
46
47
48
49
50
51
52
54
C18
GNDB
3.3V
C20
C22
100NF
0603
E
10 MHZ
GNDB
0603
C15
C
D3
0603
GNDB
RED
APTD1608SURCK
J3
J4
Sheet1.SCHDOC
M
2/8/2011
Sheet
3
4
3
4
1
F
GNDB
Rev
U4
U7
2
B.Popescu
of
C. King
Drawn by:
Eng:
1 03-00330
PIC18F87J72 1P Energy Meter
Filename:
Date:
Size
Title
REACTIVE
POWER
680
R19
GNDB
0603
680
R20
PULSE OUTPUTS
D2
REACTIVE_POWER
MPU_PGD
MPU_PGC
GNDB
MPU_MCLR
2
1
2
1
0603
680
R21
GNDB
0603
680
R17
GNDB
2
MPU_SCK
IN CIRCUIT DEBUG /
PROGRAMMING HEADER
RED
APTD1608SURCK
MOM-NC
PUSH = HI
MPU_MCLR
3.3V
0603
F
SW2
MPU_SDO
GNDB
3.3V
HDR_1x6
X1
Place either R16 or U9
3.3V
GNDB
3.3V
53
AFE_DR
AFE_F0/CS
MPU_SCK
MPU_SDI
C23
100NF
E
55
56
57
58
59
60
AC Mains side
OUT
2
GNDB
MCP1700T-3302E/TT
0603
C27
100NF
GNDB
10
R43
67
100NF
GNDB
68
R40
GNDA
72
AFE_SYNC
69
1
+
B
GND
1
80
LCDBIAS3/RE2
SEG19/AN6/RF1
21
77
COM0/RE3
ENVREG
22
COM1/RE4
76
COM2/RE5
AVDD
23
COM3/RE6
AVSS
24
AN3/VREF+/RA3
25
75
SEG31/CCP2(1)/RE7
SDAVSS
26
73
SEG0/RD0
74
SDAVDD
AN2/VREF-/RA2
27
VDD
SDREFIN29
SDREFIN+/SDOUT
28
71
VSS
SEG18/AN1/RA1
30
MEM_CS
SDVDD
AN0/RA0
31
SDMCLR
VSS
32
SEG1/RD1
GND
MPU_SDO
64
SDSDI
66
SEG2/RD2
33
SEG15/AN4/RA5
34
SEG14/T0CKI/RA4
35
SEG3/RD3
65
SEG4/RD4
SEG32/T1OSI/CCP2(1)/
36
ACTIVE_POWER
62
SEG6/RD6
61
SEG7/RD7
REACTIVE_POWER
T1OSO/T13CLKI/RC0
37
VSS
3
6 5 4 3 2 1
63
SEG5/RD5
SEG27/TX1/CK1/RC6
38
USB_TX
SDDR
40
AFE_DR
SEG28/RX1/DT1/RC7
39
USB_RX
SDVSS
1
1
2
DS51933A-page 36
1
4
3
2
1
A.3
2
A
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
BOARD – SCHEMATIC
© 2011 Microchip Technology Inc.
4
3
2
1
A
GND_ISO
EXP16_3V3
EXP16_3V3
GND_ISO
GND_ISO
EXP16_3V3
GND_ISO
GND_ISO
20
22
24
26
28
30
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
120
19
21
23
25
27
29
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99
101
103
105
107
109
111
113
115
117
119
Connector
from Explorer 16
18
12
16
10
9
17
8
7
11
15
6
14
4
5
13
2
3
ISO_RX
GND_ISO
GND_ISO
GND_ISO
EXP16_3V3
EXP16_3V3
GND_ISO
GND_ISO
EXP16_3V3
ISO_TX
B
B
OSC1
GND_ISO
12 MHz
X2
R34
RED
D8
GND_ISO
0603
TBD
USB_5V
APTD1608SURCK
OSC2
470
R26
2200_OSC1
2200_OSC2
ISO_VDD
APTD1608SURCK
USB_5V
RED
D9
470
R27
2200_RST
TX_LED
RX_LED
C40
U1
D4
C39
6.8uF
EXP16_3V3
GND_ISO
GND_ISO
VSS
D+
DVUSB
GP0/SSPND
GP1/USBCFG
GP2
CTS
RX
RTS
MCP2200-I/SS
VDD
OSC1
OSC2
RST
GP7/TxLED
GP6/RxLED
GP5
GP4
GP3
TX
MCP2200-I/SS
100NF
GND_ISO
0603
C
ISO_VDD
C
Isolated side
ISO_VDD
1
J7
ISO_VDD
C25
100NF
GND_ISO
D+
D-
GND_ISO
0603
USB_5V
D+
D-
ISO_TX
J8
D
120
R1
270
R32
D
0603
J2
JMP
0603
GND_ISO
VBUS
2200 TX
5
4
3
2
1
Shield
© 2011 Microchip Technology Inc.
6
0603
4.7K
R28
GND_ISO
ISO_VDD
ISO_RX
4
3
2
1
AN2
VDD1
Vo1
GND1
ACSL-6210
U10
GND2
Vo2
VDD2
AN1
8
5
6
7
GNDB
R33
120
3.3V
E
USB_RX
0603
4.7K
R29
3.3V
E
0603
C
Sheet2.SCHDOC
M
2/8/2011
Sheet
2
F
Rev
2
B.Popescu
of
C. King
Drawn by:
Eng:
1 03-00330
PIC18F87J72 1P Energy Meter
Filename:
Date:
Size
Title
AC Mains side
USB_TX
F
2
4
3
2
1
A.4
ISO_VDD
1
2
3
A
Schematic and Layouts
BOARD – SCHEMATIC ISOLATION
DS51933A-page 37
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
A.5
BOARD – TOP SILK
™
DS51933A-page 38
© 2011 Microchip Technology Inc.
Schematic and Layouts
A.6
BOARD – TOP TRACES AND PADS
© 2011 Microchip Technology Inc.
DS51933A-page 39
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
A.7
BOARD – TOP TRACES AND SILK
™
DS51933A-page 40
© 2011 Microchip Technology Inc.
Schematic and Layouts
A.8
BOARD – BOTTOM TRACES AND PADS
© 2011 Microchip Technology Inc.
DS51933A-page 41
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
A.9
BOARD – BOTTOM SILK
DS51933A-page 42
© 2011 Microchip Technology Inc.
ENERGY MONITORING PICtail™ PLUS
DAUGHTER BOARD USER’S GUIDE
Appendix B. Bill of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (BOM)
Reference
Description
Manufacturer
Panasonic®
Part Number
15
C1, C5, C6,
CAP .1UF 16V CERAMIC Y5V
C9, C12, C18, 0603
C21, C22,
C23, C25,
C27, C34,
C36, C40
1
C4
CAP 1.5UF 250/275VAC ECQ-UL
Panasonic – ECG
ECQ-U2A155ML
3
C8, C19, C41
CAP CER 10UF 6.3V Y5V 0805
Murata Manufacturing
Co., Ltd.
GRM21BF50J106ZE01L
5
C11, C13,
C14, C16,
C17
CAP CER 47000PF 25V 10% X7R
0603
Murata Manufacturing
Co., Ltd.
GRM188R71E473KA01D
2
C15, C20
CAP CERAMIC 27PF 50V NP0
0603
Kemet
C0603C270J5GACTU
2
C24
CAP 470UF 25V ELECT FC SMD
Panasonic – ECG
EEV-FC1E471P
4
C26, C28,
C31, C35
CAP CER 6800PF 50V 5% C0G
1206
Murata Manufacturing
Co., Ltd.
GRM3195C1H682JA01D
1
C30
CAP Tantalum A 10uF 6.3V
AVX Corporation
TAJA106M006RNJ
1
C39
CAP CERAMIC 6.8UF 6.3V X5R
0805
Kemet
C0805C685K9PACTU
1
D1
Transient Voltage Suppressors
8.5V, Peak Pulse 600W, 41.7A
Littelfuse® Inc.
SMBJ8.5A
4
D2, D3, D8,
D9
LED – SMD Helios SMD Red
Kingbright Corporation
APTD1608SURCK
1
D4
SCHOTTKY DIODE
G3010BER/SOD
NXP Semiconductors
PMEG3005CT,215
1
D5
SCHOTTKY DIODE
G3010BER/SOD
NXP Semiconductors
3005CT,215
1
F1
Fuses 250V IEC LL .200A TR5
Littelfuse Inc.
37002000000
1
J1
6 X 1 Header 2.54mm on center 6
mm/2.5mm
Samtec, Inc
TSW-106-07-G-S
1
J2
3 x 1 Header 2.54mm
—
—
– ECG
®
ECJ-1VF1C104Z
0
J3, J4
CONN HEADER 2POS .100 VERT Molex Electronics
TIN
1
J5
MOD INLET ANG GND W/M3
HOLE PCB
Schurter Electronic
Components
GSP1.9103.1
1
J6
MODULE PWR OUTLET F
SCREW-ON PCB
Schurter Electronic
Components
6182.0033
1
J7
MINI EDGE CARD CONNECTOR
1.MM
Samtec, Inc
MEC1-160-02-S-D-EM2
Note 1:
22-28-4020
The components listed in this Bill of Materials are representative of the PCB assembly. The
released BOM used in manufacturing uses all RoHS-compliant components.
© 2011 Microchip Technology Inc.
DS51933A-page 43
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
TABLE B-1:
Qty
BILL OF MATERIALS (BOM) (CONTINUED)
Reference
Description
Manufacturer
Part Number
1
J8
CONN RCPT USB MINI B MID
MOUNT
Hirose Electric Co., Ltd. UX60SD-MB-5S55
1
J10
CONN PWR JACK 2.5X5.5MM
VERT SMD
CUI Inc.
PJ-006B-SMT
1
JMP
SHUNT ECONOMY 2POS .100
TIN (for J2)
Tyco Electronics
2-382811-1
2
L1, L2
FERRITE 300MA 150 OHM 1806
SMD
Laird Technologies®
LI1806C151R-10
3
L3, L4, L5
FERRITE 800MA 150 OHM 0805
SMD
Laird Technologies
LI0805H151R-10
1
MOV1
VARISTOR 275V RMS 20MM
RADIAL
EPCOS AG.
S20K275E2
1
PCB
RoHS Compliant Bare PCB,
Energy Monitoring PICtail™ Plus
Daughter Board (PIC18F87J72)
—
104-00330
1
Q1
IIC LDO REG 200MA 3.3V
SOT-23-3
Microchip Technology
Inc.
MCP1700T-3302E/TT
1
Q2
IC REG LDO 5V 250MA SOT-89-3
Microchip Technology
Inc.
MCP1702T-5002E/MB
2
R1, R33
RES SMT, 120-OHM 1/10W 5%
0603
Panasonic – ECG
ERJ-3GEYJ121V
1
R15
RES SMT, 1K-OHM 1/10W 5%
0603
Panasonic – ECG
ERJ-3GEYJ102V
2
R17, R21
RES 680 OHM 1/10W 5% 0603
SMD
Stackpole Electronics
Inc.
RMCF0603JT680R
1
R18
RESISTOR SILICONE 33 OHM 5W Ohmite® Mfg. Co.
45F33RE
2
R19, R20
RES SMT, 330-OHM 1/10W 5%
0603
Panasonic – ECG
ERJ-3GEYJ331V
0
R22
DO NOT POPULATE
—
—
2
R24, R25
RES 330K OHM 1/4W 5% 1206
SMD
Stackpole Electronics
Inc
RMCF 1/8 330K 5% R
2
R26, R27
RES SMT, 470-OHM 1/10W 5%
0603
Panasonic – ECG
ERJ-3GEYJ471V
2
R16, R28,
R29
RES SMT, 4.7K-OHM 1/10W 5%
0603
Panasonic – ECG
ERJ-3GEYJ472V
1
R32
RES SMT, 270-OHM 1/10W 5%
0603
Panasonic – ECG
ERJ-3GEYJ271V
0
R34
DO NOT POPULATE
—
—
4
R37, R38,
R41, R42
RES 1.00K OHM 1/8W 1% 0805
SMD
Rohm Semiconductor
MCR10EZHF1001
2
R39, R44
RES 332K OHM 1/8W 1% 0805
SMD
Rohm Semiconductor
MCR10EZPF3323
2
R40, R43
RES SMT, 10-OHM 1/10W 5%
0603
Panasonic – ECG
ERJ-3GEYJ100V
1
SHUNT1
Precision Current Sensing
Resistors 3 mΩ, 3W,
tolerance:1.0%
ISOTEK Corporation
BVS-A-R003-1.0
Note 1:
The components listed in this Bill of Materials are representative of the PCB assembly. The
released BOM used in manufacturing uses all RoHS-compliant components.
DS51933A-page 44
© 2011 Microchip Technology Inc.
Bill of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (BOM) (CONTINUED)
Reference
Description
Manufacturer
Part Number
1
SW2
SWITCH TACT 6MM SMD MOM
230GF
Omron Corporation
B3S-1002 BY OMZ
1
TP1
Wire Test Point 0.3" Length
Component
Corporation®
PJ-202-30
1
U2
IC USB TO UART 20-SSOP
Microchip Technology
Inc.
MCP2200-I/SS
1
U3
IC EEPROM 256 KBIT 10 MHz
8-SOIC
Microchip Technology
Inc.
25AA256-I/SN
2
U4, U7
PHOTOCOUPLER DARL OUT
4-SMD
Sharp® Electronics
Corporation
PC365NJ0000F
1
U8
PIC18F Microcontroller with 32K
bytes of Flash, 2048 bytes of RAM
Microchip Technology
Inc.
PIC18F87J72-80I/PT
1
U9
DO NOT POPULATE
Microchip Technology
Inc.
MCP130T-270I/TT
1
U10
OPTOCOUPLER DUAL BI 15MBD Avago Technologies
8-SOIC
ACSL-6210-00RE
1
X1
CRYSTAL 10.0000 MHz 10PF
SMD
ABM3B-10.000MHZ-10-1-U-T
1
X2
RESONATOR 12.0 MHz CERAMIC Murata Manufacturing
Co., Ltd.
CSTCE12M0G55-R0
4
Ea Conner
and center of
PCB
BUMPON HEMISPHERE .63X.31
BLACK
SJ-5027 (BLACK)
Note 1:
Abracon Corporation
3M
The components listed in this Bill of Materials are representative of the PCB assembly. The
released BOM used in manufacturing uses all RoHS-compliant components.
© 2011 Microchip Technology Inc.
DS51933A-page 45
Energy Monitoring PICtail™ Plus Daughter Board User’s Guide
DS51933A-page 46
© 2011 Microchip Technology Inc.
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://www.microchip.com/
support
Web Address:
www.microchip.com
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-3090-4444
Fax: 91-80-3090-4123
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Cleveland
Independence, OH
Tel: 216-447-0464
Fax: 216-447-0643
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
Indianapolis
Noblesville, IN
Tel: 317-773-8323
Fax: 317-773-5453
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
China - Beijing
Tel: 86-10-8569-7000
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Hangzhou
Tel: 86-571-2819-3180
Fax: 86-571-2819-3189
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Taiwan - Hsin Chu
Tel: 886-3-6578-300
Fax: 886-3-6578-370
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Kaohsiung
Tel: 886-7-213-7830
Fax: 886-7-330-9305
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
DS51933A-page 47
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
05/02/11
© 2011 Microchip Technology Inc.
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