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PACSystems* RX3i

GFK-2748 Power Sync and Measurement System

December 2012 IC694PSM001-AA and IC694ACC200-AA

RUN

PSM001

GRID 2

GRID 1

FLT

GRID 1

CAL

Module Offset: -2

Module Gain: 4000H

Module Offset: -2

Module Gain: 4000H

The PACSystems

Power Sync and Measurement (PSM) system monitors two independent

three-phase power grids. It incorporates advanced digital signal processor (DSP) technology

to continuously process three voltage inputs and four current inputs for each grid.

Measurements include RMS voltages, RMS currents, RMS power, frequency, and phase

relationship between the phase voltages of both grids.

The PSM module performs calculations on each captured waveform, with the DSP

processing the data in less than two-thirds of a power line cycle. The PSM module can be

used with wye or delta type three-phase power systems or with single-phase power systems.

The PSM system can be used for applications such as:

 Electrical power consumption monitoring and reporting

 Fault monitoring

 Generator control features for generator to power grid synchronization

 Demand penalty cost reduction/load shedding

The PSM system consists of:

 PSM module – A standard IC694 module that mounts in an RX3i rack. The PSM

module provides the DSP capability.

 Terminal Assembly – A panel-mounted unit that provides the interface between the

PSM module and the input transformers.

 Interface cables – Provide the GRID 1 and GRID 2 connections between the PSM

module and the Terminal Assembly.

PSM System Features

 Uses standard, user-supplied current transformers (CTs) and phase voltages (up to

690 VAC), or potential transformers (PTs) as its input devices.

 Accurately measures RMS voltage and current, power, power factor, frequency,

energy, and total three-phase 15-minute power demand.

 Provides two isolated relays that close when the voltage phase relationships between

the two monitored grids are within the specified ANSI 25 limits provided by the RX3i

host controller. These contacts can be used for general-purpose, lamp duty or pilot

duty loads. Voltage and current ratings for these load types are provided in the

PACSystems RX3i Power Sync and Measurement System User’s Manual, GFK-2749.

 Provides a cable monitoring function that indicates when the cables linking the PSM

module and Terminal Assembly are correctly installed.

 PSM module and Terminal Assembly are easily calibrated by hardware configuration

using the Proficy* Machine Edition (PME) software.

Ordering Information

IC694PSK001

PSM System. Includes a PSM module, a Terminal Assembly and two interface cables

IC694PSM001

Replacement PSM module

IC694ACC200

Replacement Terminal Assembly

IC694CBL200

One replacement 2m (6.56 ft.) interface cable

IC694ACC201

PSM replacement parts:

two finger guards

four thumb screws

one relay connector

two grounding lug nuts

indicates a trademark of GE Intelligent Platforms, Inc. and/or its affiliates. All other trademarks are the property of their respective

Summary of content (11 pages)

PAGE 1
PACSystems* RX3i Power Sync and Measurement System IC694PSM001-AA and IC694ACC200-AA GFK-2748 December 2012 RUN FLT GRID 1 2 PSM001 The PACSystems* Power Sync and Measurement (PSM) system monitors two independent three-phase power grids. It incorporates advanced digital signal processor (DSP) technology to continuously process three voltage inputs and four current inputs for each grid.
PAGE 2
RX3i Power Sync and Measurement System GFK-2748 Specifications PSM Module Power Requirements Backplane Power Consumption 400 mA max. at 5 VDC Total Power Dissipation 2.0 W max.
PAGE 3
RX3i Power Sync and Measurement System 3 GFK-2748 Data Exchange Time Between RX3i CPU and PSM A complete data exchange between the PSM and RX3i occurs during each controller scan. Minimum scan time is 3.5ms per PSM module in the backplane. Minimum data update rate is one power line period. See “Error! Reference source not found.
PAGE 4
RX3i Power Sync and Measurement System GFK-2748 Quick Reference Guide Warning HIGH VOLTAGE; HIGH CURRENT DO NOT TOUCH the connectors or wiring after powering up the PSM system. Hazardous voltages exist, and death or injury may result. The Terminal Assembly frame ground connection must always be installed and must be installed before any other wiring is attached.
PAGE 5
RX3i Power Sync and Measurement System 5 GFK-2748 Configuration The PSM module is configured using the Proficy Machine Edition programming software, version 7.50 or later. Configuration parameters are used to set nominal values for Grid1 and Grid2 voltage, current and frequency, and to calibrate the PSM system for specific Potential Transformer and Current Transformer gains, increasing the accuracy of the measured values.
PAGE 6
RX3i Power Sync and Measurement System GFK-2748 %Q Bit Offset Function 13 GRID 1 Delta Mode: 0 = otherwise B phase is common, 1= with C phase common This bit must be set to 0 if the phase B is used as the common connection for the other two voltages (North American standard). If the phase C is used as the common in a Delta connection, this bit must be set to 1. 14 Reserved 15 GRID 1 Energy reset: When set, the accumulated energy for Grid 1 is reset and held at 0 Wh.
PAGE 7
RX3i Power Sync and Measurement System 7 GFK-2748 PSM Status Flags The PSM returns 80 status flag bits to the RX3i controller. Those 80 bits are grouped into five 16-bit words.   The first status word (%I1 – %I16) contains the overall PSM status flags. The following two words (%I17 – %I48) contain the individual grid measurement faults. These flags identify the voltage/current channel experiencing a measurement problem.
PAGE 8
RX3i Power Sync and Measurement System GFK-2748 %I Bit Offset Value 57 GRID 1 VIImbalanceAlarm: 0 = OK, 1 = ANSI 60 Alarm 58 GRID 1 UnderFreqAlarm: 0 = OK, 1 = ANSI 81U Alarm 59 GRID 1 OverFreqAlarm: 0 = OK, 1 = ANSI 81O Alarm 60 - 64 Reserved 65 GRID 2 ClampedFreq: 0 = OK, 1 = Line Frequency outside the range (40 - 70 Hz) 66 GRID 2 ClampedInput: 0 = OK, 1 = some inputs have signal clamped 67 GRID 2 MixedPolarity: 0 = OK, 1 = At least one phase PT/CT has wrong polarity 68 GRID 2 NegS
PAGE 9
RX3i Power Sync and Measurement System 9 GFK-2748 Field Wiring Wiring to the PSM consists of     the connection cable between the Terminal Assembly and the PSM the leads to user-supplied potential and mandatory user-supplied current transformers Sync relay output connections, and frame ground connections from the Terminal Assembly to the chassis. No CT shorting bars are provided on the PSM Terminal Assembly; these must be supplied by the user.
PAGE 10
RX3i Power Sync and Measurement System GFK-2748 Release History Version Firmware Revision IC694PSM001-AA 1.00 Date December 2012 Comments Initial release. Important Product Information for this Release This is the initial release of the RX3i Power Sync and Measurement system. Functional Compatibility Subject Programmer Version Requirements CPU Firmware Version Version Required Proficy* Machine Edition Logic Developer 7.50 with SIM 2 or newer or Proficy Machine Edition Logic Developer 7.
PAGE 11
RX3i Power Sync and Measurement System 11 GFK-2748 Subject Description Scaling for PT and CT Ratios The IC694PSM001 module reports the voltages and currents measured at the IC694ACC200 terminals. Therefore, the application logic must correct for PT and CT ratios to reflect the actual power grid voltages, currents, powers and energies. Example: Using 480V:120V PTs requires the application logic to multiply the reported voltage values by 4.