CET PMC-680i User manual

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PMC-680i
Advanced Power Quality Analyzer
User Manual
Version: V0.9A
October 15, 2015
Ceiec Electric Technology
This manual may not be reproduced in whole or in part by any means without the express
written permission from Ceiec Electric Technology (CET).

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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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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.

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Limited warranty
Ceiec 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.

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Table of Contents
Table of Contents............................................................................................................................... 5
Glossary ........................................................................................................................................... 10
Chapter 1 Introduction .................................................................................................................... 11
1.1 Overview..................................................................................................................................11
1.2 Features ...................................................................................................................................12
1.3 PMC-680i’ application in Power and Energy Management and Analyzer Systems .................19
1.4 Getting more information........................................................................................................20
Chapter 2 Installation ...................................................................................................................... 21
2.1 Appearance..............................................................................................................................21
2.2 Unit Dimensions.......................................................................................................................23
2.3 Mounting .................................................................................................................................23
2.4 Wiring Connections..................................................................................................................24
2.4.1 3-phase 4-wire Wye Direct Connection .......................................................................25
2.4.2 3-phase 4-wire Wye with 3PTs and 4CTs .....................................................................25
2.4.3 3-phase 3-wire Grounded Wye Direct Connection ......................................................26
2.4.4 3-phase 3-wire Grounded Wye with 3PTs and 3CTs ....................................................26
2.4.5 3-phase 3-wire Grounded Delta Connection ...............................................................27
2.4.6 3-phase 3-wire Delta with 2PTs and 3CTs ....................................................................27
2.4.7 3-phase 3-wire Delta with 2PTs and 2CTs ....................................................................28
2.5 Communications Wiring ..........................................................................................................28
2.5.1 Ethernet Port (10/100BaseT) .......................................................................................28
2.5.2 RS485 Port....................................................................................................................29
2.6 Digital Input Wiring ..................................................................................................................29
2.7 GPS 1PPS Input wiring..............................................................................................................30
2.8 Digital Output Wiring...............................................................................................................30
2.9 RO Wiring.................................................................................................................................30
2.10 Pulse Output Wiring...............................................................................................................31
2.11 Power Supply Wiring..............................................................................................................31
2.12 Chassis Ground Wiring...........................................................................................................31
Chapter 3 User Interface .................................................................................................................. 32
3.1 Front Panel Interface ...............................................................................................................32
3.1.1 Display Hierarchy and Menu Tree................................................................................32
3.1.2 Navigating the Front Panel User Interface...................................................................34

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3.2 Web Interface ..........................................................................................................................44
3.2.1 Setting PC's IP Address.................................................................................................45
3.2.2 Configure PMC-680i's IP Addresses .............................................................................45
3.2.3 Enabling Java Scripting in Google Chrome ...................................................................46
3.2.4 Web Interface ..............................................................................................................47
Chapter 4 Applications..................................................................................................................... 67
4.1 Inputs and Outputs ..................................................................................................................67
4.1.1 Digital Inputs ................................................................................................................67
4.1.2 Relay Outputs and Digital Outputs...............................................................................69
4.1.3 Energy Pulse Outputs ...................................................................................................71
4.2 Power, Energy and Demand ....................................................................................................72
4.2.1 Basic Measurements ....................................................................................................72
4.2.2 Energy Measurements .................................................................................................73
4.2.3 Demands ......................................................................................................................73
4.2.4 Time of Use (TOU)........................................................................................................76
4.3 Setpoints ..................................................................................................................................78
4.4 Power Quality Parameters.......................................................................................................81
4.4.1 Power Frequency .........................................................................................................81
4.4.2 Magnitude of the Supply Voltage ................................................................................81
4.4.3 Flicker ...........................................................................................................................81
4.4.4 Supply Voltage Dips/Swells and Interruption ..............................................................82
4.4.5 Voltage Transients .......................................................................................................86
4.4.6 Supply Voltage Unbalance ...........................................................................................86
4.4.7 Harmonics and Interharmonics....................................................................................87
4.4.8 Mains Signalling Voltage (MSV) ...................................................................................89
4.4.9 Voltage Deviation.........................................................................................................90
4.4.10 Rapid Voltage Changes (RVC).....................................................................................91
4.4.11 Inrush Current ............................................................................................................93
4.4.12 Flagging Concept........................................................................................................96
4.4.13 Disturbance Direction Location..................................................................................97
4.4.14 EN50160 Compliance Report .....................................................................................97
4.4.15 Disturbance Waveform Recorder (DWR) ...................................................................98
4.4.16 ITIC/SEMI F47 Curve.................................................................................................100
4.5 Data Logging ..........................................................................................................................101
4.5.1 SOE Log and PQ Log ...................................................................................................101

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4.5.2 Statistical Data Recorder (SDR) ..................................................................................103
4.5.3 Data Recorder (DR) ....................................................................................................103
4.5.4 Max./Min. Log ............................................................................................................104
4.5.5 Pst Log ........................................................................................................................105
4.5.6 Plt Log.........................................................................................................................105
4.5.7 Interval Energy Recorder (IER) ...................................................................................105
4.5.8 Qualification Rate Log ................................................................................................107
4.5.9 Waveform Recorder (WFR) ........................................................................................107
4.5.10 SDR Trend.................................................................................................................108
4.5.11 PQDIF and COMTRADE Storage ...............................................................................109
4.5.12 PQ Counters .............................................................................................................110
4.6 SMTP (Simple Mail Transfer Protocol) ...................................................................................111
4.7 Time Synchronization ............................................................................................................114
4.7.1 PMC Setup..................................................................................................................114
4.7.2 PecStar iEMS ..............................................................................................................115
4.7.3 SNTP (Simple Network Time Protocol).......................................................................115
4.7.4 Modbus ......................................................................................................................115
4.7.5 GPS with Time Sync Pulse ..........................................................................................116
4.7.6 IRIG-B .........................................................................................................................116
4.7.7 DI with PPS .................................................................................................................117
Chapter 5 Modbus Register Map ................................................................................................... 118
5.1 Basic Measurements..............................................................................................................118
5.2 Energy Measurements ...........................................................................................................125
5.3 DI Pulse Counter ....................................................................................................................125
5.4 PQ Measurements .................................................................................................................126
5.5 Harmonics & Interharmonic Measurements .........................................................................129
5.5.1 Harmonic Distortion Measurements .........................................................................129
5.5.2 Harmonic Voltage & Current RMS .............................................................................131
5.5.3 Individual Total Harmonic ..........................................................................................133
5.5.4 Harmonic Power ........................................................................................................134
5.5.5 Harmonic Angles ........................................................................................................135
5.5.6 Harmonic Energy........................................................................................................136
5.5.7 Interharmonics Distortion (IHD) Measurements .......................................................137
5.5.8 Interharmonic Voltage & Current RMS ......................................................................139
5.6 Demand..................................................................................................................................141

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5.6.1 Present Demand ........................................................................................................141
5.6.2 Predicted Demand .....................................................................................................145
5.6.3 Max. Value per Demand Period .................................................................................147
5.6.4 Min. Value per Demand Period..................................................................................151
5.6.5 Present Max. ..............................................................................................................156
5.6.6 Max. of Last Time .......................................................................................................156
5.7 Log Register ...........................................................................................................................157
5.7.1 SOE Log Buffer............................................................................................................157
5.7.2 PQ Log Buffer .............................................................................................................158
5.7.3 SDR Log ......................................................................................................................159
5.7.4 DR (Data Recorder) Log..............................................................................................161
5.7.5 MM Log (Max./Min. Log) ...........................................................................................164
5.7.6 Pst/Plt Log ..................................................................................................................165
5.7.7 IER (Interval Energy Recorder) Log.............................................................................167
5.7.8 EN50160 Log ..............................................................................................................168
5.7.9 QR (Qualification Rate) Log ........................................................................................180
5.7.10 TOU Log....................................................................................................................181
5.8 Real-time WFR Register .........................................................................................................183
5.9 Device Setup Parameters.......................................................................................................184
5.9.1 Communications Setup ..............................................................................................184
5.9.2 Basic Setup Parameters .............................................................................................185
5.9.3 DI Setup......................................................................................................................187
5.9.4 RO/DO Setup..............................................................................................................188
5.9.5 SMTP Setup ................................................................................................................189
5.9.6 PQ Log Setup ..............................................................................................................190
5.9.7 PQDIF Setup ...............................................................................................................193
5.9.8 Demand Setup............................................................................................................194
5.9.9 WFR Setup..................................................................................................................194
5.9.10 Energy Pulse Setup...................................................................................................195
5.9.11 Standard Setpoints Setup ........................................................................................196
5.9.12 HS (High-speed) Setpoints Setup .............................................................................199
5.9.13 SDR Setup.................................................................................................................200
5.9.14 Data Recorder (DR) Setup ........................................................................................241
5.9.15 High-speed (HS) DR Setup........................................................................................253
5.9.16 Max./Min. Recorder (MMR) Setup ..........................................................................257

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5.9.17 Interval Energy Recorder (IER) Setup .......................................................................260
5.9.18 EN50160 Setup.........................................................................................................261
5.9.19 QR (Qualification Rate) Log......................................................................................263
5.9.20 Trend Log Setup .......................................................................................................264
5.9.21 TOU Setup ................................................................................................................264
5.9.22 System Setup............................................................................................................272
5.10 File Transfer Register ...........................................................................................................274
5.10.1 File Name .................................................................................................................274
5.10.2 Reading File ..............................................................................................................275
5.10.3 Register Address ......................................................................................................275
5.11 Control Setup .......................................................................................................................275
5.11.1 RO/DO Control .........................................................................................................275
5.11.2 Clear DI/DO ..............................................................................................................277
5.11.3 Clear/Reset Control..................................................................................................278
5.12 Time Registers......................................................................................................................281
5.13 Information ..........................................................................................................................282
5.13.1 Meter Information ...................................................................................................282
5.13.2 Device Tag Information ............................................................................................284
5.13.2 Circuit Tag Information ............................................................................................285
Appendix A - Data ID...................................................................................................................... 286
DR and SDR Data ID .....................................................................................................................286
High-speed DR Data ID.................................................................................................................304
Demand Data ID...........................................................................................................................305
Appendix B –Event Classification .................................................................................................. 308
Appendix C - Technical Specifications ............................................................................................ 317
Appendix D - Accuracy Specifications............................................................................................. 319
Appendix E - IEC61000-4-30 Class A Certificate .............................................................................. 320
Appendix F - Ordering Guide.......................................................................................................... 323
Contact us...................................................................................................................................... 324

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Glossary
1PPS = 1 Pulse Per Second
CET = Ceiec Electric Technology
DI = Digital Input
DMD = Present Demand
DO = Digital Output
DR = Data Recorder
DWR = Disturbance Waveform Recorder
FIFO = First In First Out
Fund. = Fundamental
GB = Giga Byte
GPS = Global Positioning System
HS = High-Speed
Hn = nth order Harmonic, integer multiple (n) of the Fundamental Frequency (50Hz or 60Hz)
IHn = nth order Interharmonic represents all components between the (n-1)th and nth harmonic orders in
RMS
HDn = nth order Harmonic Distortion
IHDn = nth order Interharmonic Distortion
Hn = nth order Harmonic in RMS
IHn = nth order Interharmonic in RMS
LCD = Liquid Crystal Display
MB = Mega Byte
Pred_DMD = Predicted Demand
Plt = Long-term Flicker
Pst = Short-term Flicker
PQ = Power Quality
RO = Relay Output
RTC = Real Time Clock
SDR = Statistical Data Recorder
SOE = Sequence Of Events
SMTP = Simple Mail Transfer Protocol
SYNC DI = Demand Sync Input
TH = Total Harmonic in RMS, excluding Fundamental
THD = Total Harmonic Distortion

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TOHD = Total Odd Harmonic Distortion
TEHD = Total Even Harmonic Distortion
U0 / I0 = Zero Sequence Voltage / Current
U1 / I1 = Positive Sequence Voltage / Current
U2 / I2 = Negative Sequence Voltage /Current
U0 / I0 Unb = Zero Sequence Voltage / Current Unbalance
U2 / I2 Unb = Negative Sequence Voltage / Current Unbalance
I5 =Ground Current
WF = Waveform
WFR = Waveform Recorder
Dip = Used interchangbly with Sag
Sag = Used interchangbly with Dip
Swell = Temporary increases in RMS value of AC voltage
Transient =Unidirectional impulse of either polarity or a damped oscillatory wave with the first peak occurring in
either polarity
Urms(1/2) = Half-Cycle RMS Voltage
Udin = Declared input voltage - Value obtained from the declared supply voltage by a transducer ratio
Usr = Sliding Reference Voltage
Ihalf cycle rms = Value of the RMS Current measured over each half period
Dip Threshold = Voltage magnitude specified for the purpose of detecting the start and end of a voltage dip
Flagged data = For any measurement time interval in which interruptions, dips or swells occur, the measurement
results of all other parameters made during this time interval are flagged
Chapter 1 Introduction
This manual explains how to use the PMC-680i Advanced Power Quality Analyzer.
This chapter provides an overview of the PMC-680i Analyzer and summarizes many of its key features.
1.1 Overview
The PMC-680i is CET’s Advanced Utility PQ Analyzer designed for the compliance monitoring market
as it offers un-surpassed functionality by combining Class 0.2S accuracy and advanced PQ features in a
standard DIN 192 form factor with a high resolution, backlit, color TFT LCD display. The PMC-680i
complies with IEC 62053-22 Class 0.2S, IEC 61000-4-30 Class A, IEC 61000-4-7, IEC-61000-4-15 and
EN50160. Further, it offers a logging capacity with up to 8GB of on-board memory, extensive I/O
with 8xDIs, 4xRO and 4xDOs, GPS Time Sync., dual Ethernet and two RS-485 ports. These features
likely make the PMC-680i the most advanced PQ Analyzer for the Utility market today.
Typical Applications
PQ monitoring at HV, MV and LV Utility Substations

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Data Centers, Semiconductor Fabs, Heavy Industries
7x24 Automated Manufacturing Facilities
Dips/Swell, Transient, Flicker and Disturbance monitoring
Mains and critical feeder monitoring
Substation automation with IEC61850 protocol
Retrofit applications with Clamp-on CTs
The above are just a few of the many applications. Contact CET Technical Support should you
require further assistance with your application.
1.2 Features
Basic Features
Standard 512 samples/cycle sampling, optional 1024
4GB on-board log memory, optional 8GB
Industrial-grade, high-resolution Color TFT LCD @ 640x480
IEC 62053-22 Class 0.2S kWh metering with Multi-Tariff TOU
Time Synch. via IRIG-B, SNTP or GPS 1PPS output
256 setpoints and 16 HS (High-Speed) Setpoints
Dual 100Base T Ethernet and RS485 ports
Up to 12 months of daily backup of PQ recordings in PQDIF format
Power Quality Features
IEC 61000-4-30 Class A Certified by PSL
IEC 61000-4-7, IEC 61000-4-15 and EN50160 Reporting
Dips/Swells, Transient, Interruptions, Mains Signalling Voltage (MSV), Rapid Voltage Changes
(RVC) and In-rush Current monitoring
Disturbance Direction Indicator & Disturbance Waveform Recording
Harmonic analysis up to 63rd on-board and 511th via software
Fault Capture up to 2,000V peak to peak (400VAC Option)
Real-time Waveform (WF) Capture, Trending and Statistical Reporting
Waveform recording in PQDIF and COMTRADE file format that is compatible with the PQ View
software

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Front Panel Display
Real-time, Harmonic Power and Energy measurements
Real-time waveforms for 3-phase Voltages and Currents
Harmonic histogram
EN50160 Report
Statistical Trending
PQ Log with ITIC/SEMI F47 and waveform displays
SOE Log
I/O status
Device configuration
Diagnostics
Power Quality Metering
PQ Parameters as per IEC 61000-4-30
Power Frequency
Magnitude of the Supply Voltage
Flicker
Supply Voltage Dips and Swells
Voltage Interruptions
Transient Voltages
Supply Voltage Unbalance
Voltage Harmonics and Interharmonics
Mains Signalling Voltage (MSV) on the Supply Voltage
Rapid Voltage Changes (RVC)
Measurement of Underdeviation and Overdeviation parameters
Harmonic and Interharmonic measurements
K-Factor for Current, Crest Factor for Current and Voltage
U and I THD, TOHD, TEHD
U and I Phase and Magnitude (RMS and %HD#) from 2nd to 63rd

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U and I Interharmonics from 0 to 63rd
Harmonic kW, kvar, kVA and PF from 2nd to 63rd
Fundamental U, I, kW, kvar, kVA and Displacement PF
Total harmonic kWh, kvarh Imp./Exp./Net/Total
Harmonic kWh, kvarh Imp./Exp. from 2nd to 63rd
Fundamental kWh, kvarh Imp./Exp./Net/Total
# %HD can be configured as % of Fundamental, % of U/I nominal or % of RMS
Symmetrical Components and Unbalances
Zero, Positive and Negative Sequence Components
U and I Unbalance based on Zero and Negative Sequence Components
Transient and Dip/Swell Recording
Transient recording as short as 40us at 512 samples or 20us at 1024 samples @ 50Hz
Dip/Swell recording @ 10ms (½ cycle at 50Hz)
Transient triggers WFR and DWR
Dip/Swell trigger DO/RO, WFR, WDR, DR and HS DR
On-board analysis of ITIC/SEMI F47 plot and the captured waveforms
Rapid Voltage Changes
Programmable detection modes: voltage change between two steady-state or maximum voltage
change
In-rush Current Monitoring
Monitoring of the ½ cycle RMS Current and capturing of the Current waveforms associated with
events such as motor starting and transformer being energized
Disturbance Direction Indicator
Determine if a Dip Event is located upstream or downstream
Pinpoint if the cause of the event is external or internal
Disturbance Waveform Recorder (DWR)
Disturbance recording of all Voltage (Ua, Ub, Uc, U4 and U5) and Current (Ia, Ib, Ic, I4 and I5) Inputs
Initial Fault: Up to 35 cycles @ 512 samples/cycle
Extended Fault: 150 cycles @ 16 samples/cycle

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Steady State: 300 seconds of 1-cycle RMS recording @ 50Hz
Post Fault: Up to 15 cycles @ 512 samples/cycle
Waveform Capture (WFC) and Waveform Recorder (WFR)
Real-time WF Capture @ 128 samples/cycle via front panel display
WF Recorder with 128~ entries each
Simultaneous capture of 4-phase Voltage and 5-phase Current inputs
# of Cycles x Samples/Cycles with programmable # of pre-fault cycles
10x1024*, 20x512, 40x256
80x128, 160x64, 320x32, 640x16
Extended recording for a maximum of 7 consecutive captures
COMTRADE file format, downloadable from the on-board FTP Server
~256 entries with the 8GB option, * only available for the 1024 sampling option
PQ Event Counters
Transient, Dip, Swell, Interruption, Rapid Voltage Changes and Mains Signaling Voltage
Metering
Basic Measurements (1-second update)
3-phase Voltages (U1-U3) and U4
3-phase Currents (I1-I3), I4 and I5
3-phase Power, PF, Frequency and Phase Angles
kWh, kvarh Imp./Exp./Net/Total and kVAh Total
High-speed Measurements
3-phase Voltage and Current, U4, I4, I5 @ ½ cycle
Frequency @ 1 cycle
Demands
3-phase Voltage, Current, Power, PF, U4, I4, I5, Frequency
Demand synchronization with DI
Predicted Demands
Peak Demands for This Month and Last Month, or Before the Last Reset and Since the Last Reset

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Max./Min. per Demand Period
Multi-Tariff TOU capability
Two independent sets of TOU Schedules, each supporting
Up to 12 Seasons
90 Holidays or Alternate Days and 3 Weekdays
20 Daily Profiles, each with 12 Periods in 1-minute interval
8 Tariffs, each providing the following information
okWh/kvarh Imp./Exp. and kVAh
okW/kvar Imp./Exp. Peak Demands
oRegister Rollover value at 99,999,999,999 kXh
Data, Waveform and Event Recording
Non-Volatile Log Memory
Standard 4GB, optional 8GB
Interval Energy Recorder
kWh, kvarh Imp./Exp. and kVAh Total
Support FIFO
Statistical Data Recorder
Recording of the Max., Min., Avg. and CP95 for real-time measurements including U, I, Freq.,
Flicker, Harmonics and Unbalances in 16 different recorders
Recording interval from 1 minute to 60 minutes
30 days @ 1-minute, 300 days @ 10-minute, 450-day @ 15-minute
On-board trending via Front Panel display
PQDIF file format, downloadable from the on-board FTP Server
Data Recorder and HS Data Recorder
8 Data Recorders of 32 parameters and 4 HS DR of 16 parameters
Recording interval from 1s to 40 days for Data Recorder
Recording interval from ½ cycle to 60 cycles for HS Data Recorder
Programmable sources
Recording depth fixed at 65535

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DR supports FIFO or Stop-When-Full mode and HS DR supports Stop-When-Full mode
Max./Min. Log
Logging of Max./Min. values for real-time measurements such as U, I, kW, kvar, kVA, PF, Freq.,
Unbalance, K-factor, THD
SOE Log
1024 FIFO events time-stamped to ±1ms resolution
Setup changes, System events, Setpoint events and I/O operations
PQ Log
1024 FIFO entries time-stamped to ±1ms resolution
Transient, Dip/Swell, Disturbance Location, Rapid Voltage Change, etc.
Record the time and characteristic data of the captured PQ event
Setpoints
PQ Setpoints
Transient trigger WFR or DWR
Dip/Swell, Rapid Voltage Changes, Inrush Current and Harmonics trigger DO/RO, DR, HS DR, WFR
or DWR
Control Setpoints
256 Control Setpoints and 16 HS Setpoints
Extensive monitoring sources
Configurable thresholds and time delays
Trigger DO, DR, HS DR, WFR or DWR
Digital Input Setpoints
Provides control output actions in response to changes in Digital Input status
Demand Synchronization
Trigger DO, DR, HS DR, WFR or DWR
Inputs and Outputs
Digital Inputs
8 channels, volts free dry contact, 24VDC internally wetted
1000Hz sampling

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External status monitoring with programmable debounce
Pulse counting with programmable weight for each channel for collecting WAGES (Water, Air,
Gas, Electricity, Steam) information
Demand Synchronization
Time-Sync via GPS's 1PPS output
Digital Outputs
8 channels for control, alarming and pulsing applications
RO1-RO2: Form A Mechanical Relay
RO3-RO4: Form C Mechanical Relay
DO1-DO4: Optically Isolated Solid State Relay
Communications
Ethernet Ports (P1, P2)
Dual 10/100BaseT TCP/IP Ethernet Ports with RJ45 connector
Maximum of 10 simultaneous IP connections
Optional 100BaseFX with ST connector
Protocols
Modbus TCP
HTTP, SNTP, SMTP, FTP
Ethernet Gateway
IEC61850
Firmware upgrade via Ethernet port
RS-485 (P3, P4)
Optically isolated RS485 port with baudrate from 1.2 to 115.2 kbps
Modbus RTU protocol
Time Sync. via GPS’s 1PPS or IRIG-B outputs
Time Synchronization
Battery-backed real-time clock @ 6ppm (≤ 0.5s/day)
Time Sync. via SNTP, GPS’s 1PPS or IRIG-B outputs
System Integration

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PecStar iEMS
The PMC-680i is supported by CET’s PecStar iEMS software. In addition, the PMC-680i can be easily
integrated into other 3rd party systems because of its support of multiple communications ports as
well as different industry standard protocols
PMC Setup
Free Setup configuration tool
Real-time and log display
Remote control
3rd Party System Integration
Easy integration into Substation Automation or Utility SCADA systems via Modbus RTU, Modbus
TCP or IEC61850
The on-board Web Server allows complete access to its data and supports the configuration for
most of the setup parameters via a web browser (Chrome) without the use of any proprietary
software
The on-board, password protected FTP Server allows logged data in PQDIF or COMTRADE format
to be downloaded without any special software
The downloaded files can be subsequently viewed using software that supports the industry
standard PQDIF and COMTRADE file formats
1.3 PMC-680i’application in Power and Energy Management and Analyzer Systems
The PMC-680i can be used to monitor Wye or Delta connected power system. Modbus
communications allow real-time data, events, DI status, Data Logs, Waveform and other information
to be transmitted to an Integrated Energy Management System such as PecStar® iEMS.

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Ceiec Electric Technology
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