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PMC-230
Single-Phase Multifunction Meter
User Manual
Version: V1.1
April 1, 2022
This manual may not be reproduced in whole or in part by any means without the express written permission from CET Electric Technology (CET).
The information contained in this Manual is believed to be accurate at the time of publication; however,
CET assumes no responsibility for any errors which may appear here and reserves the right to make changes without notice. Please consult CET or your local representative for latest product specifications.
Standards Compliance
DANGER
This symbol indicates the presence of danger that may result in severe injury or death and permanent equipment damage if proper precautions are not taken during the installation, operation or maintenance of the device.
CAUTION
This symbol indicates the potential of personal injury or equipment damage if proper precautions are not taken during the installation, operation or maintenance of the device.
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CET Electric Technology
DANGER
Failure to observe the following instructions may result in severe injury or death and/or equipment damage.
➢
Installation, operation and maintenance of the meter should only be performed by qualified, competent personnel that have the appropriate training and experience with high voltage and current devices. The meter must be installed in accordance with all local and national electrical codes.
➢
Ensure that all incoming AC power and other power sources are turned OFF before performing any work on the meter.
➢
Before connecting the meter to the power source, check the label on top of the meter to ensure that it is equipped with the appropriate power supply, and the correct voltage and current input specifications for your application.
➢
During normal operation of the meter, hazardous voltages are present on its terminal strips and throughout the connected potential transformers (PT) and current transformers (CT). PT and CT secondary circuits are capable of generating lethal voltages and currents with their primary circuits energized. Follow standard safety precautions while performing any installation or service work (i.e. removing
PT fuses, shorting CT secondaries, …etc).
➢
Do not use the meter for primary protection functions where failure of the device can cause fire, injury or death. The meter should only be used for shadow protection if needed.
➢
Under no circumstances should the meter be connected to a power source if it is damaged.
➢
To prevent potential fire or shock hazard, do not expose the meter to rain or moisture.
➢
Setup procedures must be performed only by qualified personnel familiar with the instrument and its associated electrical equipment.
➢
DO NOT open the instrument under any circumstances.
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Limited warranty
➢
CET Electric Technology (CET) offers the customer a minimum of 12-month functional warranty on the meter for faulty parts or workmanship from the date of dispatch from the distributor. This warranty is on a return to factory for repair basis.
➢
CET does not accept liability for any damage caused by meter malfunctions. CET accepts no responsibility for the suitability of the meter to the application for which it was purchased.
➢
Failure to install, set up or operate the meter according to the instructions herein will void the warranty.
➢
Only CET’s duly authorized representative may open your meter. The unit should only be opened in a fully anti-static environment. Failure to do so may damage the electronic components and will void the warranty.
III
COM / Comm.
CT
DI / DO
FP
Imp. / Exp.
MB
MBPW
NER
NMI
PF
PPS
RMS
RTC
SCADA
SOE
T1 to T4
THD
TOU
UL
WAGES
CET Electric Technology
Glossary
= Communication
= Current Transformer
= Digital Input / Output
= Front Panel
= Import / Export
= Mega Byte
= Modbus Password
= National Electricity Rules
= National Measurement Institute
= Power Factor
= Pulse Per Second
= Root Mean Square
= Real-Time Clock
= Supervisory Control And Data Acquisition
= Sequence of Events
= Tariff 1 to Tariff 4
= Total Harmonics Distortion
= Time of Use
= Underwriters Laboratories Inc.
= Water, Air, Gas, Electricity and Steam
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Table of Contents
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VI
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Chapter 1 Introduction
This manual explains how to use the PMC-230 Single-Phase Multifunction Meter.
This chapter provides an overview of the PMC-230 meter and summarizes many of its key features.
1.1
Overview
The PMC-230 Single-Phase Multifunction Meter is CET’s latest offer for the low voltage energy metering market featuring DIN rail mount, compact construction, 63A direct input with an internal UC3 Disconnect Relay compliant with Australia National Electricity Rules (NER) schedule 7.5 for the ability to disconnect/re-connect from the supply. The PMC-230 also complies with the IEC 62053-21 Class 1 kWh Accuracy Standard and has received the certificate of approval from the National Measurement Institute (NMI) of Australia for compliance with the M6-1 Electricity Meters, Part 1: Metrological and Technical Requirements. The PMC-230 provides 4MB
Log Memory for Data Recording, 3xDI for Status Monitoring or Pulse Counting, 1xLED Pulse Indicator and 1xSS
Pulse Output for Energy Pulsing. Further, the standard RS-485 port supporting Modbus RTU protocol with password protection allows the PMC-230 to become a vital component of an intelligent, multifunction monitoring solution for any Energy Management Systems.
Following is a list of typical applications for the PMC-230:
▪ DIN rail mount energy metering
▪
▪
▪
Industrial, Commercial and Utility Substation Metering
Building, Factory and Process Automation
Sub-metering and Cost Allocation
▪ NMI compliant Energy Management
Contact CET Technical Support at [email protected]
should you require further assistance with your application.
1.2
Features
Ease of Use
▪ Easy to read LCD for both data viewing and configuration
▪
▪
▪
Two LED indicators for Energy Pulsing and Disconnect Relay status
Password-protected setup via Front Panel or free PMC Setup software
Easy installation with DIN rail mounting, no tools required
Basic Measurements
▪ IEC 62053-21 Class 1 and NMI M6-1 Certified by UL
▪ Direct Input up to 63A without external CT
▪
▪
▪
▪
U, I, P, Q, S, PF, Frequency and Operating Time kWh and kvarh Imp./Exp and kVAh
Two TOU schedules, each providing
•
•
4 Seasons
12 Daily Profiles, each with 8 Periods in 15-minute interval
• 30 Holidays or Alternate Days
•
4 Tariffs, each providing kWh/kvarh Imp./Exp., kVAh
Demands and Max. Demands for U, I, P/Q/S with Timestamp for This Month & Last Month (or Since Last
Reset & Before Last Reset)
▪
▪
U and I THD
DI Counters, Front Panel & Communication Programming Counters
Disconnect Relay (Internal)
▪ UC3 compliant Disconnect Relay that can be activated locally from the Front Panel or remotely via communications
Energy Pulse Outputs
▪ 1 LED Energy Pulse Output on the Front Panel
▪ 1 Solid State Relay Energy Pulse Output
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Digital Inputs
▪ 3 channels for external status monitoring and pulse counting
▪
▪
Self-excited, internally wetted at 12VDC
1000Hz sampling
Data Recorder
▪
▪
▪
One Data Recorder Log of 16 parameters
Recording Interval from 1 second to 40 days.
Configurable Depth (max. 65535) and Recording Offset
▪
▪
4MB Log Memory, capable of recording 16 parameters at 5-minute interval for 6 months
Available parameters: U, I, P, Q, S, PF, Freq., kWh Imp./Exp., kvarh Imp./Exp., Demands and Max. Demands for U, I, P/Q/S Total, DI Pulse Counters and Relay Status
Monthly Energy Log
▪ 12 historical monthly logs of kWh/kvarh Imp./Exp. and kVAh as well as kWh/kvarh Imp./Exp. and kVAh per Tariff
SOE Log
▪ 32 events time-stamped to ±1ms resolution
Communications
▪ Optically isolated RS-485 port at 1200 to 19,200 bps
▪ Modbus RTU protocol with configurable password protection
Real-time Clock
▪ Battery backed RTC @ 6ppm (≤0.5s/day)
▪ Battery Life > 10 years
System Integration
▪ Supported by our PecStar® iEMS and PMC Setup
▪ Easy integration into other Automation or SCADA systems via Modbus RTU protocol
1.3
PMC-230’s application in Power and Energy Management System
Figure 1-1 Typical Application
1.4
Getting More Information
Additional information is available from CET via the following sources:
▪ Visit www.cet-global.com
▪ Contact your local representative
▪ Contact CET directly via email or telephone
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Chapter 2 Installation
Caution
Installation of the PMC-230 should only be performed by qualified, competent personnel that have the appropriate training and experience with high voltage and current devices. The meter must be installed in accordance with all local and national electrical codes.
During the operation of the meter, hazardous voltages are present at the input terminals. Failure to observe precautions can result in serious or even fatal injury and equipment damage.
2.1
Appearance
2.2
Terminal Dimensions
Figure 2-1 Appearance
Figure 2-2 Terminal Dimensions
3
1
Terminal
Input (L, N)
2 Output (L’, N’)
3 Pulse Output (E+, E-)
4 RS-485 (D+, D-)
5 DI (DIC, DI1, DI2, DI3)
2.3
Unit Dimensions
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Terminal Dimensions
7.35mm x 9.6mm
Max. Wire Size
25.0mm
2
2.5mm x 2.8mm
1.5mm
Figure 2-3 Terminal Dimensions
2
Max. Torque
25.0 kgf.cm/M3
(21.7 lb-in)
4.5 kgf.cm/M3
(3.9 lb-in)
Front View
Unit: mm
Side View
Bottom View
2.4
Installations
The PMC-230 should be installed in a dry environment with no dust and kept away from heat, radiation and electrical noise source.
Installation steps:
▪ Before installation, make sure that the DIN rail is already in place
▪ Move the installation clip at the back of the PMC-230 downward to the “unlock” position
▪ Mount the PMC-230 on the DIN rail
▪ Push the installation clip upward to the “lock” position to secure the PMC-230 on to the DIN Rail
Figure 2-4 Installations
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2.5
RS-485 Wiring
The PMC-230 provides one standard RS-485 port that supports the Modbus RTU protocol. Up to 32 devices can be connected on an RS-485 bus. The overall length of the RS-485 cable connecting all devices should not exceed
1200m.
If the master station does not have an RS-485 port, an RS-232/RS-485 or USB/RS-485 converter with optically isolated outputs and surge protection should be used. The following figure illustrates the RS-485 connections on the PMC-230.
Figure 2-5 RS-485 Wiring
2.6
Digital Input
The following figure illustrates the Digital Input connections:
Figure 2-6 Digital Input
2.7
Pulse Output
The following figure illustrates the Solid State Relay connections for Energy Pulsing on the PMC-230 when the
DO Energy Pulse is programmed for kWh or kvarh pulsing:
Figure 2-7 Solid State Relay Connections for Energy Pulsing or 1 PPS (Pulse Per Second) Output
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Chapter 3 Front Panel
The meter’s Front Panel is used for both display and configuration purposes. The LCD display and the two buttons provide access to measurements, meter information and configuration.
Figure 3-1 Front Panel Display
3.1
LCD Display
3.1.1
LED Pulse Output
The PMC-230 comes standard with an LED Pulse Output on its Front Panel, which can be used for kWh/kvarh
Total energy pulsing by setting the LEd setup parameter via the Front Panel or LED Energy Pulse register via communications.
3.1.2
LCD Display Symbols
The following figure shows the LCD display symbols based on “
8
”.
Figure 3-2 LCD Display Symbols
3.2
LCD Testing
Pressing both the < > and the < ▼ > buttons simultaneously for 2 seconds enters the LCD Test mode. During testing, all LCD segments are illuminated and will blink on and off three times before returning to the Data
Display mode.
3.3
Display Modes
The PMC-230 has a default display which can be set as one of two modes: Fixed mode which displays kWh Imp statically and Auto-Scroll mode which displays kWh/kvarh Imp./Exp. and kVAh as well as kWh Imp./Exp. per Tariff sequentially in 4 seconds interval. The Auto-Scroll setup parameter can only be enabled/disabled via
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3.4
Data Display
In Data Display mode, pressing the < ▼ > button scrolls to the next parameter while pressing the < > button toggles among Energy , Real-time Data and Counter menus.
Figure 3-3 Data Display
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3.5
Setup Configuration via the Front Panel
Pressing the < > button for two seconds enters the Setup Configuration mode where the setup parameters can be changed. Upon completion, pressing the < > button for two seconds returns to the Data Display mode.
3.5.1
Function of buttons
The two Front Panel buttons take on different meanings in the Setup Configuration mode and are described below:
< > : Pressing this button for two seconds toggles between Data Display mode and Setup Configuration mode. Once inside the Setup Configuration mode and at the main menu, pressing this button selects a parameter for modification. Once selected, the parameter value blinks while it’s being changed. If the selected parameter is a numeric value, pressing this button shifts the cursor to the left by one position. When the cursor has reached the left-most digit, pressing this button again will save the new setting into memory. The parameter will also stop blinking once the value has been saved.
< ▼ > : Before an item is selected, pressing this button scrolls to the next setup parameter. If the selected parameter is a numeric value, pressing this button increments the selected digit. If the selected parameter is an enumerated value, pressing this button scrolls through the enumerated list.
Pressing the < ↩ > button will save the current enumerated value.
Making setup changes:
▪ Press the < > button for two seconds to enter the Setup Configuration mode.
▪ Press the < ▼ > button to advance to the Password page.
▪ A correct password must be entered before changes are allowed. The factory default password is zero. Press the < ▼ > button to select the parameter for modification. Use the < ▼ > and < > buttons to enter the correct password.
▪ Use the < ▼ > button to scroll to the desired parameter.
▪ Press the < > button to select the parameter. Once selected, the parameter value will blink.
▪ Use the < > and < ▼ > buttons to make modification to the selected parameter.
▪ Pressing the < > button for two seconds to exit the Setup Configuration mode.
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3.5.2
Setup Menu
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Figure 3-4 Setup Menu
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3.5.3
Configurations
The Setup Configurations mode provides access to the following setup parameters:
Label Parameters Description Option (value)
PROG
PW
Programming
Password
Setup Configuration Mode
Enter Password
/
0~9999
SET PW
DISC
PF
Id
Bd
Set Password
Disconnect
PF Convention
Unit ID
Baud Rate
Enter New Password
Switch the Disconnect Relay Off/On
PF Convention
COM Unit ID
Data rate in bits per second (bps)
0~9999
ON/OFF
1~247
IEC, IEEE, -IEEE
1200/2400/4800/
9600/19200
CFG nUM
PErIod
LEd do
CLr En
CLr dMd
COM Port
Configuration
# of Windows
Period
DO Energy Pulsing
Clear Energy
Clear Demand
LED Energy Pulsing
CLr DI Clear DI
Clr oT Clear Operating Time
CLr SoE
CLr Cnt
Clear SOE
Clear Counters
Set Date
Set Clock
FW
PROT
SN
Firmware Version
Firmware Date
Protocol
The left 5 digits
The right 5 digits
Data Format
Firmware Version
Firmware Version Date
Protocol Version
The left 5 digits of SN
The right 5 digits of SN
Table 3-1 Configuration
Clear running hours for device
Clear SOE
No. of Windows for Demand Calculation
Demand Period
Configure LED Energy Pulsing
Configure DO Energy Pulsing
Clear All Energy
Clear All Demand
Clear All DI counters
Enter the Current Date
Enter the Current Time
Clear both FP & COM Setup Counters
8N2/8O1/8E1/8N1
1~15
0~60 (min)
OFF/kWh/kvarh
OFF/kWh/kvarh
YES/No
YES/No
YES/No
YES/No
Yes/No
YES/No
YY-MM-DD
HH:MM:SS
For example, 10002 means the firmware version is V1.00.02.
YYMMDD e.g. 1.1 means V1.1
XXXXX
YYYYY
Default
/
0
-
ON
IEC
100
9600
/
/
/
/
/
8E1
1
5(min) kWh kWh
No
No
No
No
No
No
/
/
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Chapter 4 Applications
4.1
Inputs and Outputs
4.1.1
Digital Inputs
The PMC-230 comes standard with three self-excited Digital Inputs that are internally wetted at 12VDC. Digital
Inputs on the PMC-230 can be used in the following applications:
1)
2)
Status Input
Pulse Counting
The digital inputs are typically used for status monitoring which can help prevent equipment damage, improve maintenance, and track security breaches. The real-time statuses of the Digital Inputs are available through communications. Changes in
Digital Input status are stored as events in the SOE Log in 1 ms resolution.
Pulse counting is supported with programmable debounce and pulse weight to facilitate WAGES (Water, Air, Gas, Electricity and Steam) information collection.
The following table describes the DI Setup Parameters that can be programmed over communications:
Setup Parameter
DIx Function
DIx Debounce
DIx Pulse Weight
Each DI
Definition
can be configured as a Status Input or Pulse Counter. used when a DI is configured as a Pulse Counter.
Table 4-1 Digital Input Setup
Specifies the minimum duration the DI must remain in the Active or Inactive state before a DI state change is considered to be valid.
Specifies the incremental value for each received pulse. This is only
Options/Default*
0=Status Input
1=Pulse Counter*
1 to 9999 (ms)
20ms*
1* to 1,000,000
4.1.2
Energy Pulse / 1 PPS Output
The PMC-230 comes standard with one Front Panel LED Pulse Output and one Solid State Relay Output for kWh or kvarh Energy Pulsing. Energy Pulse Output is typically used for accuracy testing. Energy Pulsing is enabled by default and can be disabled from the Front Panel or through communications. The Pulse Constant is fixed at 1000 impulses per kWh or kvarh. If the DO Energy Pulsing ( do ) parameter is disabled, the PMC-230 will output a 1PPS signal with a pulse width of 500ms ± 0.5ms at the Energy Pulse Output terminals ( E+ , E) for the accuracy testing of its internal clock.
4.1.3
Disconnect Relay
The PMC-230 comes standard with one internal Disconnect Relay which can be manually operated via the Front
Panel or remotely controlled via communications to switch the load off or back on.
4.2
Metering
4.2.1
Basic Measurements
The PMC-230 provides real time measurements for I, U, P, Q, S, PF, Freq., U THD, I THD and Operating Time.
4.2.2
Energy Measurements
The PMC-230 provides Energy measurements for kWh, kvarh Import/Export and kVAh at a resolution of 0.01 kxh and a maximum value of 1,000,000.00 kxh. When the maximum value is reached, it will automatically roll over to zero. The energy measurements can be reset manually via the Front Panel or through communications as well as preset via communications.
4.2.3
Demands
Demand is defined as the average consumption over a fixed interval (usually 15 minutes) based on the sliding window method. The PMC-230 provides the Present Demand, Max. Demand for This Month (Since Last Reset) and Last Month (Before Last Reset) for I, U, P, Q and S. The Present Demand and Max. Demand measurements can be retrieved via communications, and its Setup Parameters can be configured via the Front Panel (except for the Self-Read Time parameter) and through communications.
The PMC-230 provides the following Demand Setup parameters:
Parameter
Period
Definition
1 to 60 minutes. For example, if the # of Sliding Windows is set as 1 and the Demand Period is 15, the demand cycle will be 1×15=15min.
# of Sliding
Windows
Number of Sliding Windows.
Options/Default*
1 to 60 minutes,
5*
1 to 15, 1*
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Self-Read
Time
The Self-Read Time allows the user to specify the time and day of the month for the Max. Demand Self-Read operation. The Self-Read Time supports three options:
•
•
A zero value means that the Self-Read will take place at 00:00 of the first day of each month.
A non-zero value means that the Self-Read will take place at a specific time and day based on the formula: Self-Read Time = Day x 100 + Hour
• where 0 ≤ Hour ≤ 23 and 1 ≤ Day ≤ 28. For example, the value 1512 means that the Self-Read will take place at 12:00pm on the 15th day of each month.
A 0xFFFF value will disable the Self-Read operation and replace it with manual operation. A manual reset will cause the Max. Demand of This
Month to be transferred to the Max. Demand of Last Month and then reset. The terms This Month and Last Month will become Since Last
Reset and Before Last Reset .
Table 4-2 Demand Setup
0xFFFF*
4.2.4
Harmonics
The PMC-230 provides the U THD and I THD measurements which can be retrieved via the Front Panel or through communications. There are two methods for calculating the THD:
THDf: where I
1 represents the amplitude of the fundamental component and I n
represents the amplitude of the n th harmonic.
THDr: where the denominator represents the total RMS value and the numerator represents the RMS value of the harmonics from 2 nd to 8 th .
4.3
Logs
4.3.1
Monthly Energy Log
The PMC-230 stores the monthly energy data for the present month and the last 12 months. The Monthly Energy
Log Self-Read Time setup parameter allows the user to specify the time and day of the month for the Recorder’s self-read operation via communications. The Monthly Energy Logs are stored in the meter’s non-volatile memory and will not suffer any loss in the event of power failure, and they are stored on a First-in-First-out basis where the newest log will overwrite the oldest one.
The Monthly Energy Log Self-Read Time supports two options:
▪ A zero value means that the Self-Read will take place at 00:00 of the first day of each month.
▪ A non-zero value means that the Self-Read will take place at a specific time and day based on the formula:
Energy Self-Read Time = Day x 10 0 + Hour where 0 ≤ Hour ≤ 23 and 1 ≤ Day ≤ 28. For example, the value 1512 means that the Self-Read will take place at 12:00 pm on the 15 th day of each month.
The Monthly Energy Logs can be reset manually via communications.
The PMC-230 provides the following Energy data for the Present Month and the last 12 months:
Active Energy
Reactive Energy
Apparent Energy kWh Import/Export, Tariff 1 to Tariff 4 kWh Import/Export kvarh Import/Export, Tariff 1 to Tariff 4 kvarh Import/Export kVAh, Tariff 1 to Tariff 4 kVAh
Table 4-3 Energy Measurement for Monthly Energy Log
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4.3.2
SOE Log
The PMC-230’s SOE Log can store up to 32 events such as Power-on, Power-off, Digital Input Status changes,
Disconnect Relay Status changes, Self-diagnostics and Setup changes in its non-volatile memory. Each event record includes the event classification, its relevant parameter values and a timestamp in ±1ms resolution. The
SOE Log can be retrieved via communications for display. If there are more than 32 events, the newest event will replace the oldest one on a First-in-First-Out basis. The SOE Log can be reset through the Front Panel or via communications.
4.3.3
Data Recorder Log
The PMC-230 provides one Data Recorder capable of recording 16 parameters at a 5-min interval for 6 months.
The Data Recorder log is stored in the device’s non-volatile memory and will not suffer any loss in the event of a power failure.
The programming of the Data Recorder is only supported over communications. The Data Recorder provides the following setup parameters.
Parameters
Trigger Mode
Recording Mode
Value/Option
0=Disabled / 1=Triggered by Timer
0=Stop-When-Full / 1=First-In-First-Out
Default
1
1
Recording Depth 1 to 65535 (entry)
Recording Interval
Offset Time
1 to 3,456,000 seconds
Number of Parameters 0 to 16
0 to 43,200 seconds, 0 indicates no offset.
Parameter 1 to 16
See Table 5-28 Data Recorder Parameters
Table 4-4 Data Recorder Setup
60000
300s
0
14
Table 5-27 Data Recorder Setup
The Data Recorder Log is only operational when the values of Trigger Mode, Recording Depth, Recording Interval, and Number of Parameters are all non-zero.
The Recording Offset can be used to delay the recording by a fixed time from the Recording Interval. For example, if the Recording Interval parameter is set to 3600 (hourly) and the Recording Offset parameter is set to 300 (5 minutes), the recording will take place at 5 minutes after the hour every hour, i.e. 00:05, 01:05, 02:05, etc. The value of the Recording Offset parameter should be less than the Recording Interval parameter.
The following formula can be used to calculate how many bytes would be required for the Data Recorder with n parameters where 0 ≤ n ≤ 16.
No. of Bytes per Record = n x 4 + Timestamp @ 8 bytes
With 16 parameters, the no. of bytes required = 16 x 4 + 8 = 72 bytes. It should be noted that the above calculation is used to illustrate the internal organization of the data storage and is only an approximation of the actual implementation. The following table defines the maximum Recording Depth can be set for the different number of parameters.
No. of Parameters
1
2
3
4
5
6
7
8
Max. Recording Depth
65535
65535
65535
65535
65535
65535
No. of Parameters
9
10
11
12
13
14
Max. Recording Depth
65535
65535
15
16
Table 4-5 Max. Recording Depth for Different No. of Parameters
65535
65535
65535
65535
65535
64400
60600
57200
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4.4
Time of Use (TOU)
TOU is used for Electricity Pricing that varies depending on the time of day, day of week, and season. The TOU system allows the user to configure an electricity price schedule inside the PMC-230 and accumulate energy consumption into different TOU tariffs based on the time of consumption. TOU programming is only supported through communications.
The TOU feature on PMC-230 supports two TOU schedules, which can be switched at a pre-defined time. Each
TOU schedule supports:
▪ Up to 4 Seasons
▪ 30 Holidays or Alternate Days
▪ 12 Daily Profiles, each with 8 periods in 15-minute interval
▪ 4 Tariffs
Each TOU Schedule has the following setup parameters and can only be programmed via communications:
Parameters
Daily Profile #
Season #
Alternate Days #
Day Types
Switching Time
Definition
Specify a daily rate schedule which can be divided into a maximum of 8 periods in 15-min intervals.
Up to 12 Daily Profiles can be programmed for each TOU schedule.
A year can be divided into a maximum of 4 seasons. Each season is specified with a Start Date and ends with the next season’s Start Date.
A day can be defined as an Alternate Day, such as May 1 st
Alternate Day is assigned a Daily Profile.
. Each
Specify the day type of the week. Each day of a week can be assigned a day type such as Weekday1, Weekday2, Weekday3 and Alternate Days. The Alternate Day has the highest priority.
Specify when to switch from one TOU schedule to another.
Writing 0xFFFFFFFF to this parameter disables switching between TOU schedules.
Table 4-6 TOU Setup
1 to 12, the first period starts at 00:00 and the last period ends at 24:00.
1 to 4, starting from
January 1
1 to 30.
Options st
Weekday1, Weekday2,
Weekday3 & Alternate
Days.
Format: YYYYMMDDHH
Default=0xFFFFFFFF
For each of the 4 Tariffs, the PMC-230 provides the kWh, kvarh Import/Export and kVAh measurement.
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Chapter 5 Modbus Map
This chapter provides a complete description of the Modbus register map ( Protocol Version 1.0
) for the PMC-
230 to facilitate the development of 3 rd party communications driver for accessing information on the PMC-230.
The PMC-230 supports the following Modbus functions:
1) Read Holding Registers (Function Code 0x03)
2) Force Single Coil (Function Code 0x05)
3) Preset Multiple Registers (Function Code 0x10)
For a complete Modbus Protocol Specification, please visit http:// www.modbus.org
.
The following table provides a description of the different data formats used for the Modbus registers. The PMC-
230 uses the Big Endian byte ordering system.
Format
UINT16/INT16
UINT32/INT32
Float
Description
Unsigned/Signed 16-bit Integer
Unsigned/Signed 32-bit Integer
IEEE 754 32-bit
Single Precision Floating Point Number
5.1
Basic Measurements
Register
0000
0002
0004
0006
0008
0010
0012
0014~0039
0040
0041
0042
0043
0044
0046
0048
Property
RO
RO
RO
RO
RO
RO
RO
--
RO
RO
RO
RO
RO
RO
RO
Description
U
I
P
Q
S
PF
Frequency
Reserved
Operating Time
Table 5-1 Basic Measurements
Format
Float
Float
Float
Float
Float
Float
Float
--
UINT16
UINT16
UINT16
UINT16
UINT32
UINT32
UINT32
Scale x1
--
0~9999 x0.1
--
--
Unit
V
A kW kvar kVA
--
Hz
--
Hour
--
--
Notes:
1.
The FP Counter and Comm. Counter will be incremented every time some important setup parameters, which may affect the accuracy of Energy registers and DI Pulse Counters or the way they are calculated, are changed via the Front Panel or communications, respectively. The FP Counter is incremented every time a relevant setup parameter is changed via the Front Panel, while the Comm.
Counter is incremented every time a single packet is sent to change one or more relevant setup parameters through communications.
The following actions may trigger these counters to increment:
▪ Changing Setup Parameters: o DI setup parameters o LED Energy Pulse o DO Energy Pulse o Preset Energy Value o Demand Period and No. of Sliding Windows o TOU setup registers o Manual Time Set
▪ Clear Actions via the Front Panel: o Clear All Energy o Clear All Demand o Clear Operating Time o Clear All DI Counters
▪ Clear Actions via communications: o Clear Historical Monthly Energy (Register 9600) o Clear Real Time Energy (Register 9601) o Clear Monthly Energy Log of Present Month (Register 9602) o Clear All Energy Logs (Register 9603) o Clear Max. Demand Log of This Month (Register 9605) o Clear All Demand (Register 9606) o Clear Device Operating Time (Register 9607) o Clear All Data (Register9614) o Clear DI1 Counter (Register 9609) o Clear DI2 Counter (Register 9610) o Clear DI3 Counter (Register 9611) o Clear All DI Counters (Register 9612)
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CET Electric Technology
2.
For the DI Status register, the bit values of B0 to B2 represent the states of DI1 to DI3, respectively, with “1” meaning Active (Closed) and “0” meaning Inactive (Open).
3.
For the Disconnect Relay Status register, the returned value “1” means Connected while “0” means Disconnected.
4.
The PMC-230 has one SOE Log and one DR Log. Each of these logs has a Log Pointer that indicates its current logging position. The range of the Log Pointer is between 0 and 0xFFFFFFFF, and it is incremented by one for every new log generated and will roll over to 0 if its current value is 0xFFFFFFFF. If a Clear Log is performed through the Front Panel or via communications, its Log Pointer will be reset to zero, and the SOE Log Pointer will be immediately incremented by one with a new “Clear SOE” event. When the SOE or DR Log Pointer is larger than the respective Log Depth, the latest 32 SOE logs or up to 65,535 DR Logs are stored on a FIFO basis.
5.2
Real Time Energy Measurements
Register
0500
0502
0504
0506
0508
0510
0512
0514
0516
0518
0520~0538
0540
0542
0544
0546
0548
Property
…
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description Format kWh Import kWh Export kvarh Import kvarh Export kVAh kWh Import of T1 kWh Export of T1 kvarh Import of T1 kvarh Export of T1 kVAh of T1
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
… kWh Import of T4 kWh Export of T4 kvarh Import of T4
INT32
INT32
INT32
INT32 kvarh Export of T4 kVAh of T4
INT32
INT32
Table 5-2 Energy Measurements
Scale x0.01
Unit kWh kvarh kVAh kWh kvarh
… kWh kWh kvarh kVAh
5.3
DI Pulse Counter
Register
1200
1202
1204
Property
RW
RW
RW
Description
DI1 Pulse Counter
DI2 Pulse Counter
Format
INT32
INT32
DI3 Pulse Counter INT32
Table 5-3 DI Pulse Counter
Range/Unit
0 to 99,999,999
5.4
Harmonic Measurement
Register
1300
1302
Property
RO
RO
Description
I THD
Format
Float
U THD Float
Table 5-4 Harmonic Measurements
Scale/Unit x1, 0.1 means 10%
5.5
Demand Measurements
5.5.1
Present Demand
Register
3000
3002
3004
3006
3008
Property
RO
RO
RO
RO
RO
Scale x1
5.5.2
Max. Demand of This Month (Since Last Reset)
Register
3400~3405
3406~3411
3412~3417
3418~3423
3424~3429
Property
RO
RO
RO
RO
RO
Description
U
I
P
Q
S
Format
See
Table 5-6 Max. Demand of This Month
Description
U
I
P
Q
Format
Float
Float
Float
Float
S Float
Table 5-5 Present Demand
Scale x1
Unit
U
A kW kvar kVA
Unit
U
A kW kvar kVA
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CET Electric Technology
5.5.3
Max. Demand of Last Month (Before Last Reset)
Register
3600~3605
3606~3611
3612~3617
3618~3623
3624~3629
Property
RO
RO
RO
RO
RO
Description Format
U
I
P
Q
S
See
Table 5-7 Max. Demand of Last Month
5.5.4
Demand Data Structure
+0
+1
+2
+3
+4~+5
Offset
High-order Byte
Low-order Byte
High-order Byte
Low-order Byte
High-order Byte
Low-order Byte
-
-
Format Description
Year - 2000 (0-37)
INT16
Month (1-12)
Day (1-31)
INT16
Hour (0-23)
Minute (0-59)
INT16
INT16
Float
Second (0-59)
Millisecond (0 to 999)
Record Value
Table 5-8 Demand Data Structure
Scale x1
Unit
U
A kW kvar kVA
5.6
Logs
5.6.1
Monthly Energy Log
Register
0980
0981
0982
0983
0984
0986
0988
0990
0992
0994
0996
0998
1000
1002
1004~1022
1024
1026
1028
1030
1032
Property
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Description
High-order Byte: Year (0-37)
Low-order Byte: Month (1-12)
High-order Byte: Day (1-31)
Low-order Byte: Hour (0-23)
High-order Byte: Minute (0-59)
Low-order Byte: Second (0-59) kWh Import kWh Export kvarh Import kvarh Export kVAh
kWh Import of T1 kWh Export of T1 3
3 kvarh Import of T1 kvarh Export of T1
…
kWh Import of T4 kWh Export of T4
3 kvarh Export of T4 kVAh of T4 3
Table 5-9 Monthly Energy Log
Format
INT16
INT16
INT16
INT16
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
INT32
Scale
0 to 12
Unit
HH:MM:SS) x0.01
(20YY/MM/DD kWh kvarh kVAh kWh kvarh kVAh
… kWh kvarh kVAh
Notes:
1.
This register represents the Month when it is read. To read the Monthly Energy Log, this register must be first written to indicate to the PMC-230 which log to load from memory. The range of this register is from 0 to 12, which represents the Present Month and the
Last 12 Months. For example, if the current month is 2016/10, “0” means 2016/10, “1” means 2016/09, “2” means 2016/08, ……”12” means “2015/10”.
2.
For each Monthly Energy Log, the time stamp shows the exact self-read time (20YY/MM/DD HH:MM:SS) when the log was recorded.
For the Monthly Energy Log of the Present Month, the time stamp shows the current time of the meter because the present month is not yet over.
3.
T1 to T4 means Tariff 1 to Tariff 4.
5.6.2
Data Recorder Log
Register
20000
Property
RW
20002
20003
RO
RO
Description
Data Recorder Index
High-order Byte: Year
Low-order Byte: Month
High-order Byte: Day
Format
UINT32
UINT16
UINT16
Note
1 to 37 (Year-2000)
1 to 12
1 to 31
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CET Electric Technology
20004
20005
20006~20007
20008~20009
20010~20011
20012~20013
20014~20015
20016~20017
20018~20019
20020~20021
20022~20023
20024~20025
20026~20027
20028~20029
20030~20031
20032~20033
20034~20035
20036~20037
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Low-order Byte: Hour
High-order Byte: Minute
Low-order Byte: Second
Millisecond
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Parameter 5
Parameter 6
Parameter 7
Parameter 8
Parameter 9
Parameter 10
Parameter 11
Parameter 12
Parameter 13
Parameter 14
Parameter 15
Parameter 16
Table 5-10 Data Recorder
UINT16
UINT16
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
0 to 23
0 to 59
0 to 59
Note:
1) Writing a value n to the Data Recorder Index will load the nth Log into the buffer from memory, and the valid range of the DR Index is:
Between 1 and DR Log Pointer when DR Log Pointer ≤ DR Log Depth (see Section 5.9 for DR Log Depth)
Between DR Log Pointer - (DR Log Depth - 1) and DR Log Pointer when the DR Log Pointer > DR Log Depth
5.6.3
SOE Log
The SOE Log Pointer points to the current logging position within the SOE Log where the next event will be stored. The following formula is used to determine the starting register address of the SOE log referenced by a particular SOE Log Pointer value:
Register Address = 10000 + Modulo[(SOE Log Pointer-1)/32]*8
Register
10000~10007
10008~10015
10016~10023
10024~10031
……
10248~10255
Property
RO
RO
RO
RO
RO
Description
Event 1
Event 2
Event 3
Event 4
…
Event 32
Table 5-11 SOE Log
Format
SOE Log Data Structure
Offset
+0
+1
+2
+3
+4
+5
+6
+7
Property
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Description
High-order Byte: Event Classification
Low-order Byte: Sub-Classification
High-order Byte: Year
Low-order Byte: Month
High-order Byte: Day
Low-order Byte: Hour
High-order Byte: Minute
Low-order Byte: Second
Record Time: Millisecond
High-order Byte: Reserved
High-order Word: Event Value (Float)
Low-order Word: Event Value (Float)
Table 5-12 SOE Log Data Structure
Unit
-
-
-
-
0-37 (Year-2000)
1 to 12
1 to 31
0 to 23
0 to 59
0 to 59
0 to 999
Notes:
1.
The value “1” means DI Inactive or Disconnect Relay Operated, while the value “2” means DI Active or Disconnect Relay Released.
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SOE Classification
Event
Classification
1=DI Changes
2=Relay Status
4=Self-diagnostic
5=Operations
Sub-
Classification
1
2
3
1
2
29
30
31
32
25
26
27
28
33
34
35
36
37
38
39
8
9
10
11 to 20
21
22
23
24
4
5
6
7
1
2
3
1
2
3
40
Note:
1.
The event values of Switch TOU Schedule are illustrated in the table below:
Record Value
1
Description
Switch Schedule 1 to Schedule 2 manually
Switch Schedule 2 to Schedule 1 manually 2
3
4
Switch Schedule 1 to Schedule 2 automatically
Switch Schedule 2 to Schedule 1 automatically
Table 5-14 TOU Switch Records
Status
1/2
1/2
1/2
1/2
1/2
0
0
0
0
0
0
0
--
0
0
0
0
0
0
0
0
0
0
Event
Value
0
0
0
0
0
0
0
0
0
0
0
0
--
0
0
0
0
0
0
0
0
0
0
Description
1=DI1 Inactive, 2=DI1 Active
1=DI2 Inactive, 2=DI2 Active
1=DI3 Inactive, 2=DI3 Active
1=Relay Operated, 2=Relay Released via Comm.
1=Relay Operated, 2=Relay Released via the
Front Panel
Flash Fault
FRAM Fault
System Parameters Fault
Power On
Power Off
Clear All Energy via Front Panel
Clear All Demand via Front Panel
Clear All DI Counters via Front Panel
Clear Operating Time via Front Panel
Clear SOE via Front Panel
Clear Setup Counters via Front Panel
Set Clock via Front Panel
Reserved
Setup Changes via Front Panel
Clear All Energy Logs via Comm.
Clear Real Time Energy via Comm.
Clear Historical Monthly Energy Log via Comm.
Clear Present Monthly Energy via Comm.
0
0
0
0
0
0
0
0
0
0
0
0
0 x=1 to 3
0
0
Clear Max. Demand of This Month via Comm.
Clear All Demand via Comm.
Clear All Data via Comm.
Clear SOE via Comm.
Clear DIx Counter via Comm.
Factory Restore via Comm.
Clear All DI Counters via Comm.
Clear Operating Time via Comm.
0
0
0
0
0
0
0
0
0
0
1 to 4
0
0
0
Setup Changes via Comm.
Preset Energy via Comm.
Preset TOU Energy via Comm.
Clear Data Recorder via Comm.
Clear Setup Counters via Comm.
Set Clock via Comm.
0 0
Communication locked out for 15 minutes after
3 incorrect password attempts!
Table 5-13 SOE Classification
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CET Electric Technology
5.7
Device Setup
5.7.1
Basic Setup
Register
6000
6001
6002
Property
WO
RW
RW
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
PF Convention
Current Threshold of Device
Operating Time
LED Energy Pulse
Demand Period
Format
UINT16
UINT16
UINT16
UINT16
Range, Default*
0~9999
0=IEC*, 1=IEEE, 2=-IEEE
0= THDf*, 1= THDr
1 to 1000 (x0.001 In), 4*
No. of Windows
Monthly Energy Log Self-read
UINT16 0=Disabled, 1=kWh*, 2=kvarh
UINT16 1 to 60 (min), 5*
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
Arm before execute
Table 5-15 Basic Setup
UINT16
UINT16
1 to 15, 1*
0xFFFF*
100
0=kWh Import*, 1=Auto-Scroll
0=Disabled*, 1=Enabled
0 to 9999, 9999*
0 to 9999, 0000*
0=Disabled*, 1=Enabled
0 to 32, 29 (GMT+10:00)*
Notes:
1.
The Comm. Authorization is the register to which the master software would be required to write the correct Comm. Password before it’s allowed to perform any Modbus Read/Write operations with the PMC-230, if the MBPW (Modbus Password) register is enabled. If the Comm. Password is correct, the master software will be able to communicate with the same PMC-230 continually until there is a period of inactivity of 60 seconds or longer. When this happens, the master software will have to write to the Comm. Authorization register again to re-gain access to the PMC-230. If an incorrect Comm. Password has been written to the Comm. Authorization register for 3 consecutive times, Modbus access will be locked out for approximately 15 minutes.
2.
There are two ways to calculate THD:
THDf: where I
1 represents the amplitude of the fundamental component and I n
represents the amplitude of the n th harmonic.
THDr: where the denominator represents the total RMS value and the numerator represents the RMS value of the harmonics from 2 nd to 8 th .
3.
The Self-Read Time applies to the Max. Demand Log and supports the following three options:
•
A zero value means that the Self-Read will take place at 00:00 of the first day of each month.
•
A non-zero value means that the Self-Read will take place at a specific time and day based on the formula: Self-Read Time = (Day x
100 + Hour) where 0 ≤ Hour ≤ 23 and 1 ≤ Day ≤ 28. For example, the value 1512 means that the Self-Read will take place at 12:00 pm on the 15th day of each month.
•
A 0xFFFF value means the automatic self-read operation is disabled and replaced with manual operation.
4.
The Monthly Energy Log Self-Read Time supports the following options:
•
A Zero value means that the Self-Read will take place at 00:00 of the first day of each month,
•
A non-zero value means that the Self-Read will take place at a specific time and day based on the formula: Self-Read Time = (Day x
100 + Hour) where 0 ≤ Hour ≤ 23 and 1 ≤ Day ≤ 28. For example, the value 1512 means that the Self-Read will take place at 12:00 pm on the 15th day of each month.
5.
Under Auto-Scroll mode, the kWh/kvarh Imp./Exp. and kVAh as well as kWh Imp./Exp. per Tariff are displayed sequentially in 4 seconds interval.
6.
The MBPW register is disabled by default and should be enabled if communication security is required.
7.
The following table lists the Time Zones supported:
Code Time Zone
0
1
GMT-12:00
GMT-11:00
2
3
4
5
6
7
GMT-10:00
GMT-09:00
GMT-08:00
GMT-07:00
GMT-06:00
GMT-05:00
Code
17
18
19
20
21
22
23
24
Time Zone
GMT+03:30
GMT+04:00
GMT+04:30
GMT+05:00
GMT+05:30
GMT+05:45
GMT+06:00
GMT+06:30
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CET Electric Technology
8
9
10
11
12
13
14
15
16
GMT-04:00
GMT-03:30
GMT-03:00
GMT-02:00
GMT-01:00
GMT+00:00
GMT+01:00
GMT+02:00
GMT+03:00
25
26
27
28
29
30
31
32
Table 5-16 Time Zones
GMT+07:00
GMT+08:00
GMT+09:00
GMT+09:30
GMT+10:00
GMT+11:00
GMT+12:00
GMT+13:00
5.7.2
I/O Setup
Register
6200
6201
6202
6203
6204
6205
6206
6208
6210
6212
Property
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
DI1 Function
DI2 Function
DI3 Function
DI1 Debounce
DI2 Debounce
DI3 Debounce
DI1 Pulse Weight
DI2 Pulse Weight
Format
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT32
UINT32
DI3 Pulse Weight
DO Energy Pulse
UINT32
UINT16
Table 5-17 I/O Setup
Range, Default*
0=Status Input, 1=Pulse Counter*
0=Status Input, 1=Pulse Counter*
0=Status Input, 1=Pulse Counter*
1 to 9999ms, 20ms*
1 to 9999ms, 20ms*
1 to 9999ms, 20ms*
1 to 1,000,000, 1*
1 to 1,000,000, 1*
1 to 1,000,000, 1*
0=Disabled, 1=kWh*, 2=kvarh
5.7.3
Communication Setup
Register
6501
6502
Property
RW
RW
6503 RW
Description
Unit ID
Baud Rate
Format
UINT16
Range, Default*
1 to 247, 100*
UINT16 0=1200, 1=2400, 2=4800, 3=9600*, 4=19200,
COM Port
Data Format
UINT16 0=8N2, 1=8O1, 2=8E1*, 3=8N1
Table 5-18 Communication Setup
5.8
TOU Setup
5.8.1
Basic
Register Property
7000
7001
RO
RO
7002
7003
RO
RO
7004 RO
7005
7006
7008
7009
7010
7011
7012
7013
7014
7015
RO
RW
WO
RW
RW
RW
RW
RW
RW
RW
Description
Current Tariff 1
Current Season
Current Period
TOU Switch Time
Current Daily Profile
Current Day Type
1
Current TOU Schedule No
Switch TOU Manually
Format
UINT16
UINT16
Range, Default*
0=T1*, 1=T2, 2=T3, 3=T4
0* to 3 (Season #1 to #4)
UINT16 0* to 7 (Period #1 to #8)
UINT16 0* to 11 (Daily Profile #1 to #12)
UINT16
UINT16
UINT32
0=Weekday1*, 1=Weekday2
2=Weekday3, 3=Alternate Day
0=TOU #1*, 1=TOU #2
0xFFFFFFFF*
UINT16 Write 0xFF00 to manually switch the TOU schedule
Sunday Setup
Monday Setup
Tuesday Setup
Wednesday Setup
UINT16
UINT16
UINT16
UINT16
Thursday Setup
Friday Setup
Saturday Setup
UINT16
UINT16
UINT16
Table 5-19 TOU – Basic Setup
0*=Weekday1
1=Weekday2
2=Weekday3
Notes:
1) The following table illustrates the data structure for the TOU Switch Time. For example, 0x1003140C indicates a switch time of 12:00 pm on March 20 th , 2016. Writing 0xFFFFFFFF to this register disables the switching between TOU Schedule.
Byte 3
Year-2000 (0-37)
Byte 2
Month (1-12)
Byte 1
Day (1-31)
Table 5-20 TOU Switch Time Format
Byte 0
Hour (00-23)
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CET Electric Technology
5.8.2
Seasons
The PMC-230 has two sets of Season setup parameters, one for each TOU. The Base Addresses for the two sets are 7100 and 8100, respectively, where the Register Address = Base Address + Offset. For example, the register address for TOU #1’s Season #2’s Start Date is 7100+4 = 7104.
Offset Property
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
Season #1: Weekday#1 Daily Profile
Season #1: Weekday#2 Daily Profile
Season #1: Weekday#3 Daily Profile
Format
UINT16
UINT16
UINT16
UINT16
Range/Note
0x0101
0 to 11
Season #2: Start Date UINT16
High-order Byte: Month
Low-order Byte: Day
Season #2: Weekday#1 Daily Profile
Season #2: Weekday#2 Daily Profile
Season #2: Weekday#3 Daily Profile
Season #3: Start Date
Season #3: Weekday#1 Daily Profile
Season #3: Weekday#2 Daily Profile
Season #3: Weekday#3 Daily Profile
UINT16
UINT16
UINT16
0 to 11
UINT16 See Season #2: Start Date
UINT16
UINT16
UINT16
0 to 11
Season #4: Start Date
Season #4: Weekday#1 Daily Profile
Season #4: Weekday#2 Daily Profile
Season #4: Weekday#3 Daily Profile
UINT16 See Season #2: Start Date
UINT16
UINT16
UINT16
Table 5-21 TOU – Seasons Setup
0 to 11
Notes:
1.
Start Date for Season #1 is Jan. 1 st and cannot be modified.
2.
Setting a Season’s Start Date as 0xFFFF terminates the TOU’s Season settings. All subsequent Seasons’ setup parameters will be ignored since the previous Season’s duration is from its Start Date to the end of the year.
3.
The Start Date of a particular Season must be later than the previous Season’s.
5.8.3
Daily Profile
The PMC-230 has two sets of Daily Profile setup parameters, one for each TOU.
Register Address
7200~7215
7216 ~ 7231
7232 ~ 7247
7248 ~ 7263
7264 ~ 7279
7280 ~ 7295
7296 ~ 7311
7312 ~ 7327
7328~7343
7344~7359
7360~7375
7376~7391
Property
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
Daily Profile #1
Daily Profile #2
Daily Profile #3
Daily Profile #4
Daily Profile #5
Daily Profile #6
Daily Profile #7
Daily Profile #8
Daily Profile #9
Daily Profile #10
Daily Profile #11
Daily Profile #12
Table 5-22 TOU #1 – Daily Profile Setup
Format
Register Address
8200~8215
8216~8359
8360~8375
8376~8391
Offset Property
+0 RW
+1
+2
+3
+4
+5
+6
+7
RW
RW
RW
RW
RW
RW
RW
Property
RW
RW
RW
RW
Description
Daily Profile #1
…
Daily Profile #11
Daily Profile #12
Table 5-23 TOU #2 – Daily Profile Setup
Description
Period #1 Start Time 1
Period #2
Start Time
Period #1 Tariff
High-order Byte: Hour
Low-order Byte: Min
Period #2 Tariff
Period #3 Start Time
Period #3 Tariff
Period #4 Start Time
Period #4 Tariff
Format
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
Format
Note
0x0000
0=T1, …, 3=T4
0 ≤ Hour < 24
0=T1, …, 3=T4
See Period #2 Start Time
0=T1, …, 3=T4
Min = 0, 15, 30, 45
0=T1, …, 3=T4
See Period #2 Start Time
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CET Electric Technology
+8
+9
+10
+11
+12
+13
+14
+15
RW
RW
RW
RW
RW
RW
RW
RW
Period #5 Start Time
Period #5 Tariff
Period #6 Start Time
Period #6 Tariff
Period #7 Start Time
Period #7 Tariff
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
Period #8 Start Time
Period #8 Tariff
UINT16
UINT16
Table 5-24 Daily Profile Data Format
See Period #2 Start Time
0=T1, …, 3=T4
See Period #2 Start Time
0=T1, …, 3=T4
See Period #2 Start Time
0=T1, …, 3=T4
See Period #2 Start Time
0=T1, …, 3=T4
Notes:
1) Daily Profile #1’s Period #1 Start Time is always 00:00 and cannot be modified.
2) Setting a Period’s Start Time as 0xFFFF terminates the Daily Profile’s settings. All later Daily Profile’ setup parameters will be ignored , and the previous Period’s duration is from its Start Time to the end of the day.
3) The minimum interval of a period is 15 minutes.
4) The Start Time of a particular Period must be later than the previous Period’s.
5.8.4
Alternate Days
Each Alternate Day is assigned a Daily Profile and has a higher priority than Season. If a particular date is set as an Alternate Day, its assigned Daily Profile will override the “normal” Daily Profile for this day according to the
TOU settings.
The PMC-230 has two sets of Alternate Days setup parameters, one for each TOU. The Base Addresses for the two sets are 7700 and 8700, respectively, where the Register Address = Base Address + Offset. For example, the register address for TOU #2’s Alternative Day #2’s Date is 8700+3 = 8703.
29
…
…
87
89
23
24
26
27
17
18
20
21
11
12
14
15
Offset Property
0 RW
2
3
RW
RW
5
6
8
9
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
Alternate Day #1 Date¹
Alternate Day #1 Daily Profile
Alternate Day #2 Date¹
Alternate Day #2 Daily Profile
Alternate Day #3 Date¹
Alternate Day #3 Daily Profile
Alternate Day #4 Date¹
Alternate Day #4 Daily Profile
Alternate Day #5 Date¹
Alternate Day #5 Daily Profile
Alternate Day #6 Date¹
Alternate Day #6 Daily Profile
Alternate Day #7 Date¹
Alternate Day #7 Daily Profile
Alternate Day #8 Date¹
Alternate Day #8 Daily Profile
Alternate Day #9 Date¹
Alternate Day #9 Daily Profile
Alternate Day #10 Date¹
Alternate Day #10 Daily Profile
…
…
Alternate Day #30 Date
UINT16
UINT32
UINT16
UINT32
UINT16
UINT32
UINT16
UINT32
Alternate Day #30 Daily Profile UINT16
Table 5-25 TOU – Alternate Days
Format
UINT32
UINT16
UINT32
UINT16
UINT32
UINT16
UINT32
UINT16
UINT32
UINT16
UINT32
UINT16
UINT32
UINT16
UINT32
Note
0 to 11
0 to 11
0 to 11
0 to 11
0 to 11
0 to 11
0 to 11
0 to 11
0 to 11
0 to 11
…
…
0 to 11
Notes:
1) The following table illustrates the data structure for the Date register:
Byte 3
Reserved
Byte 2 Byte 1
Year-2000 (0-37) Month (1-12)
Table 5-26 Date Format
Byte 0
Day (1-31)
When the Year and/or Month are set as 0xFF , it means the Alternate Day is repetitive by year and/or month, i.e. the same day of every year or every month is an Alternate Day.
5.9
Data Recorder Setup
Register Property
6600
6601
RW
RW
6602 RW
Description
Format
UINT16
Range, Default*
0=Disabled, 1=Triggered by Timer*
UINT16 0=Stop-when-Full, 1=First-In-First-Out*
UINT16 0 to 65,535, 60000*
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CET Electric Technology
6603
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Parameter #1
Parameter #2
Parameter #3
Parameter #4
Parameter #5
Parameter #6
Parameter #7
Parameter #8
Parameter #9
Parameter #10
Parameter #11
UINT32
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
UINT16
Parameter #12
Parameter #13
Parameter #14
UINT16
UINT16
UINT16
Parameter #15
Parameter #16
UINT16
UINT16
Table 5-27 Data Recorder Setup
1 to 3,456,000s, 300s*
0* to 43200s
0 to 16, 14*
8 (kWh Import)
9 (kWh Export)
10 (kvarh Import)
0 (Null)
0 (Null)
11 (kvarh Export)
23 (Disconnect Relay Status)
24 (DI1 Counter)
25 (DI2 Counter)
26 (DI3 Counter)
1 (U)
2 (I)
4 (P)
3 (Freq.)
13 (U Demand)
14 (I Demand)
Notes:
1.
Changing any of these Data Recorder setup registers will reset the Data Recorder.
2.
Recording Offset can be used to delay the recording by a fixed amount of time from the Recording Interval . For example, if the
Recording Interval is set to 3600 (hourly) and the Recording Offset is set to 300 (5 minutes), the recording will take place at 5 minutes after the hour every hour, i.e. 00:05, 01:05, 02:05…etc. The value of the Recording Offset parameter should be less than the
Recording Interval parameter.
3.
Please refer to
Section 4.3.3 to configure the
Recording Depth and Number of Parameters .
4.
Please refer to the following table for a complete list of Data Recorder Parameters.
ID
0
1
2
Parameter
Null
U
I
Format
--
Float
Float
ID
9
10
11
Parameter kWh Export kvarh Import kvarh Export
Format
INT32
INT32
INT32
ID
18
19
20
Parameter
U Max Demand
I Max Demand kW Max Demand
Format
Float
Float
Float
3
4
5
6
7
8
Freq. kW kvar kVA
PF kWh Import
Float 12
Float 13
Float 14
Float 15
Float 16
INT32 17 kVAh
U Demand
I Demand kW Demand kvar Demand kVA Demand
INT32 21
Float 22 kvar Max Demand kVA Max Demand
Float
Float
Float 23 Disconnect Relay Status INT32
Float 24 DI1 Counter INT32
Float 25
Float 26
Table 5-28 Data Recorder Parameters
DI2 Counter
DI3 Counter
INT32
INT32
5.10
Time
There are two sets of Time registers supported by the PMC-230 – Year / Month / Day / Hour / Minute / Second
(Registers # 60000 to 60002) and UNIX Time (Register # 60004). When sending time to the PMC-230 over Modbus communications, care should be taken to only write one of the two Time register sets. All registers within a Time register set must be written in a single transaction. If registers 60000 to 60004 are being written to at the same time, both Time register sets will be updated to reflect the new time specified in the UNIX Time register set
(60004) and the time specified in registers 60000-60002 will be ignored. Writing to the Millisecond register
(60003) is optional during a Time Set operation. When broadcasting time, the function code must be set to 0x10
(Pre-set Multiple Registers). Incorrect date or time values will be rejected by the meter. In addition, attempting to write a Time value less than Jan 1, 2000, 00:00:00 will be rejected.
Register
60000 9000
60001
60002
60003
60004
~
60005
9001
9002
9003
9004
~
9005
Property
RW
RW
RW
RW
RW
Description
High-order Byte: Year
Low-order Byte: Month
High-order Byte: Day
Low-order Byte: Hour
High-order Byte: Minute
Low-order Byte: Second
Millisecond
UNIX Time
Format
UINT16
UINT16
UINT16
UINT16
UINT32
Note
0-37 (Year-2000)
1 to 12
1 to 31
0 to 23
0 to 59
0 to 59
0 to 999
0x386D4380 to 0x7FE8177F
The corresponding time is
2000.01.01 00:00:00 to
2037.12.31 23:59:59
(GMT+00:00 Time Zone)
Table 5-29 Time Registers
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CET Electric Technology
Note:
1) The UNIX time in GMT+00:00 Time Zone should be used when writing the meter’s time. The meter will compute internally and display in Local Time based on the setting of the Time Zone setup register (#6014).
5.11
Remote Control
The Remote Control registers are implemented as both “Write-Only” Modbus Coil Registers (0XXXXX) and
Modbus Holding Registers (4XXXXX), which can be controlled with the Force Single Coil command (Function Code
0x05) or the Preset Multiple Hold Registers (Function Code 0x10). The PMC-230 does not support the Read Coils command (Function Code 0x01) because Remote Control registers are “Write-Only”. The Disconnect Relay Status register 0043 should be read instead to determine the current Disconnect Relay status.
The PMC-230 adopts the ARM before EXECUTE operation for the remote control of its Internal Disconnect Relay if this function is enabled through the Arm Before Execute Setup register (6013), which is disabled by default.
Before executing an OPEN or CLOSE command on the Disconnect Relay, it must be “Armed” first. This is achieved by writing the value 0xFF00 to the appropriate register to “Arm” a particular operation. The Relay will be
“Disarmed” automatically if an “Execute” command is not received within 15 seconds after it has been “Armed”.
If an “Execute” command is received without first having received an “Arm” command, the meter ignores the
“Execute” command and returns the 0x04 exception code.
Register
9100
9101
9102
9103
Property
WO
WO
WO
WO
Description
Arm Disconnect Relay Close
Execute Disconnect Relay Close
Arm Disconnect Relay Open
Execute Disconnect Relay Open
Table 5-30 Remote Control
Format Note
UINT16 Writing “0xFF00” to
UINT16
UINT16
UINT16 the register to perform the described action.
5.12
Clear/Reset Control
Register
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
Property
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
Description
Clear Historical Monthly Energy Log 1
Clear Present Monthly Energy Log
Clear Max. Demand Log of This Month 5
Clear Device Operating Time
Clear SOE
Clear DI1 Pulse Counter
Clear DI2 Pulse Counter
Clear DI3 Pulse Counter
Clear All DI Pulse Counters
Clear Data Recorder Logs
Table 5-31 Clear/Reset Control
Format
UINT16
Note
Writing “0xFF00” to the register execute the described action.
Notes:
1.
Writing 0xFF00 to the Clear Historical Monthly Energy Log register to clear the Monthly Energy Log of the Last 1 to 12 months, excluding the Present Monthly Energy Log.
2.
Writing 0xFF00 to the Clear Real Time Energy register to clear kWh, kvarh Import/Export and kVAh as well as the TOU kWh, kvarh
Import/Export and kVAh energy measurements.
3.
Writing 0xFF00 to the Clear All Energy register to clear the Energy measurements and all Monthly Energy logs (Present + 12 Historical).
4.
Writing 0xFF00 to the Clear Setup Counters to clear the Front Panel Setup Counter and COM Setup Counter.
5.
Writing 0xFF00 to the Clear Max. Demand of This Month register to clear the Max. Demand Log of This Month (Since Last Reset) when the Self-Read Time register is configured for automatic Self-Read operation. The Max. Demand of Last Month will not be cleared. If the
Self-Read Time register is configured for manual operation with a register value of 0xFFFF, the Max. Demand of This Month (Since Last
Reset) will be transferred to the Max. Demand of Last Month (Before Last Reset) and then cleared.
6.
Writing 0xFF00 to the Clear All Demand register to clear the Present Demand, Max. Demand of This/Last Month.
7.
Writing 0xFF00 to the Clear All Data register to clear All Energy (Energy Measurements and all Monthly Energy Logs), Setup Counters,
All Demands, Device Operating Time, SOE, DI Pulse Counters and Data Recorder Logs.
5.13
Meter Information
Register
60200~60219 9800~9819
60220
60221
9820
9821
Property
RO
RO
RO
Description
Meter model
Firmware Version
Format
UINT16
UINT16
Note
e.g. 10000 shows the version is
V1.00.00
Protocol Version UINT16 e.g. 10 shows the version is V1.0
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CET Electric Technology
60222
60223
60224
60225
9822
9823
9824
9825
RO
RO
RO
RO
Firmware Update
Date: Year-2000
Firmware Update
Date: Month
Firmware Update
Date: Day
UINT16
UINT16
UINT16
Serial Number UINT32
Table 5-32 Meter Information e.g. 140110 means January 10,
2014
Note:
1) The Meter Model Appears from registers 60200 to 60219 and contains the ASCII encoding od the string “PMC-230” as shown in the following table.
Register
60200
Value (Hex)
0x50
ASCII
P
60201
60202
60203
60204
60205
60206
60207-60219
0x4D
0x43
0x2D
0x32
0x33
0x30
0x20
Table 5-33 ASCII Code for “PMC-230”
M
C
-
2
3
0
Null
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CET Electric Technology
Appendix A – Technical Specification
Voltage (Un)
Overrange (% Un)
Range
Burden
Measurement Inputs (L, N, L’, N’)
220VAC 230VAC
120%
95-264VAC
<3VA
115%
Current (Ib / Imax)
Starting Current
Minimum Current
Burden
Frequency
Power Supply
Maximum Wire Size
Torque for L, N Terminals
5A / 63A
0.4% Ib (20mA)
5% Ib (0.25A)
<3VA
50Hz/60Hz
Self-powered from 95 to 264VAC
25 mm 2
2.5 N.m
(4AWG)
Rated Load (Resistive)
Response Time
Short-time Overcurrents
Service Life (Mech./Elec.)
Rated Making Capacity @ 1.15Un and PF=1
Disconnect Relay
100A @ 250VAC
20ms
7000A (-10% to +0%) @ 60ms
100k/5k Operations
63A max.
Rated Breaking Capacity @ 1.15Un and PF=1 63A max.
Dielectric (AC Voltage)
4kV @ 1minute (Contact to Coil)
Insulation Resistance
2kV @ 1minute (Contact to Contact)
1000MΩ/500VDC
Type
Max. Load Voltage
Max. Forward Current
Maximum Wire Size
Torque for E+, E- Terminals
RS-485 (Modbus RTU)
Maximum Wire Size
Type
Sampling
Hysteresis
Operating Temp.
Storage Temp.
Humidity
Unit Dimensions
Mounting
IP Rating
Atmospheric pressure
Pollution Degree
Torque for RS-485 Terminals
SSR Pulse Output (E+, E-)
Optically Isolated Solid State Relay
80 VDC
50 mA
1.5 mm 2 (16AWG)
0.45 N.m
Communications (D+, D-)
Optically isolated @ 5kVrms
1.5mm
2 (16AWG)
0.45 N.m
Digital Inputs (DI1, DI2, DI3, DIC)
Dry Contact, 12VDC internally wetted
1000Hz
1ms minimum
Environmental Conditions
-25°C to +70°C
-40°C to +85°C
5% to 95% non-condensing
70kPa to 106kPa
2
Mechanical Characteristics
72(W)x68(D)x90(H)mm
DIN-Rail Mounting
IP51 (Front) IP30 (Body)
Accuracy
Parameters
Voltage
Current
P, Q, S kWh kvarh
PF
Frequency
Accuracy
±0.5%
±0.5%
±1.0%
IEC 62053-21 Class 1
IEC 62053-23 Class 2
±1.0%
±0.02Hz
240VAC
110%
Resolution
0.1V
0.001A
0.001kW/kvar/kVA
0.01kWh
0.01kvarh
0.001
0.01Hz
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CET Electric Technology
Appendix B – Standards of Compliance
CE LVD 2014/35/EU
Safety Requirements
EN 61010-1: 2010
EN 61010-2-030: 2010
Electrical safety in low voltage distribution systems up to 1000Vac and 1500 Vdc
Insulation
AC voltage
Impulse voltage
IEC 61557-12: 2018 (PMD)
IEC 62052-11: 2003
IEC 62053-21: 2003
NMI M6-1
4kV @ 1 minute
12kV+0%, -15%, 1.2/50µs (NMI M6-1)
Electromagnetic Compatibility
EMC 2014/30/EU (EN 61326: 2013)
Electrostatic discharge
Radiated fields
Fast transients
Surges
Conducted disturbances
Magnetic Fields
V Dips, Interruptions & Variations
Spring hammer test
Vibration Test
Shock Test
NMI M6-1 of Australia
EN 61000-4-2: 2009
EN 61000-4-3: 2006+A1: 2008+A2: 2010
EN 61000-4-4: 2012
EN 61000-4-5: 2014+A1: 2017
EN 61000-4-6: 2014
EN 61000-4-8: 2010
EN 61000-4-11: 2004+A1: 2017
Mechanical Tests
IEC 62052-11: 2003
IEC 62052-11: 2003
IEC 62052-11: 2003
Revenue Metering Approval
Approval Mark: NMI 14/2/109
UL Ref. # R4789222180_NMI
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CET Electric Technology
Appendix C – Ordering Guide
29
Contact us
CET Electric Technology Inc.
Email: [email protected]
Web: www.cet-global.com
CET Electric Technology
30
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