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GE PACSystems RX3i User Manual
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GE PACSystems RX3i User Manual

GE PACSystems RX3i User Manual

Power sync and measurement system
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See also: Reference Manual , User Manual
GFK-2748C
May 2014
RUN
FLT
GRID 1
2
PSM001
CAL
GRID 1
CAL
GRID 2
Ordering Information
IC694PSK001
IC694PSM001
IC694ACC200
IC694CBL200
IC694ACC201
____________________________
© 2014 General Electric Company. All Rights Reserved.
*
Indicates a trademark of General Electric Company and/or its subsidiaries. All other trademarks are the property of their
respective owners.
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 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 GFK-2749,
PACSystems RX3i Power Sync and Measurement System User's Manual.
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.
PSM System. Includes a PSM module, a Terminal Assembly and two interface cables
Replacement PSM module
Replacement Terminal Assembly
One replacement 2m (6.56 ft.) interface cable
PSM replacement parts:
two finger guards
four thumb screws
one relay connector
two grounding lug nuts
PACSystems* RX3i
Power Sync and Measurement System
IC694PSM001-AB and IC694ACC200-A

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  • Page 1 These contacts can be used for general-purpose, lamp duty or pilot GRID 2 duty loads. Voltage and current ratings for these load types are provided in GFK-2749, PACSystems RX3i Power Sync and Measurement System User’s Manual.  Provides a cable monitoring function that indicates when the cables linking the PSM module and Terminal Assembly are correctly installed.

  • Page 2: Specifications

    RX3i Power Sync and Measurement System GFK-2748C Specifications PSM Module Power Requirements Backplane Power Consumption 400 mA max. at 5 VDC Total Power Dissipation 2.0 W max. Isolation from Backplane 1500 VDC Maximum number of PSM modules per No restrictions, as long as the power supply has sufficient capacity RX3i system Sync Relay Contacts Two isolated relay outputs...

  • Page 3: Installation In Hazardous Locations

    Europe, compliance with the ATEX Directive requires an enclosure with a minimum rating of IP54. For product standards, general operating sepcifications, and installation requirements, refer to GFK-2749, PACSystems RX3i Power Sync and Measurement System User’s Manual. Installation in Hazardous Locations ...

  • Page 4: User Supplied Equipment

    RX3i Power Sync and Measurement System GFK-2748C When in hazardous locations, turn off power before replacing or wiring modules; and DO NOT connect or disconnect equipment unless power has been switched off or the area is known to be nonhazardous. ATEX Zone 2 This product must be mounted in an enclosure certified in accordance with EN60079-15 for use in Zone 2, Group IIC and rated IP54.
  • Page 5 M4 - M5 or #8 - #10 SAE bolts. The Terminal Assembly should be mounted near the host controller rack containing the PSM module, close enough to accommodate the 2 meter interface cables provided. For detailed installation and power system connection instructions, refer to GFK-2749, PACSystems RX3i Power Sync and Measurement Module User's Manual.
  • Page 6 RX3i Power Sync and Measurement System GFK-2748C %Q Bit Function Offset GRID 1 CTC measurement: 0 = GRID 1 CTC not connected, 1 = GRID 1 CTC connected The PSM module reconstructs the missing variable. Refer to Reconstructed Variables in GFK-2749. GRID 1 CTN measurement: 0 = GRID 1 CTN not connected, 1 = GRID 1 CTN connected The PSM module reconstructs the missing variable.
  • Page 7 RX3i Power Sync and Measurement System GFK-2748C %Q Bit Function Offset Relay Close: Works with bit 16 to control the Sync Relay operation. For more information, refer to Relay Open/Relay Close Operation in GFK-2749. PSM Status Flags The PSM returns 80 status flag bits to the RX3i controller. Those 80 bits are grouped into five 16-bit words. ...
  • Page 8 RX3i Power Sync and Measurement System GFK-2748C Status/Alarm Alarm Timing Availability %I Bit A, B, AB: Refer to Definition Value Offset the section, ø ø Status/Alarm Timing ü GRID 1 FaultVA 0 = OK ü 1 = Fault – clamped or not calculated/measured ü...
  • Page 9 RX3i Power Sync and Measurement System GFK-2748C Status/Alarm Alarm Timing Availability %I Bit A, B, AB: Refer to Definition Value Offset the section, ø ø Status/Alarm Timing ü GRID 1 OverVoltAlarm 0 = OK 1 = ANSI 59 Alarm ü GRID 1 VIImbalanceAlarm 0 = OK 1 = ANSI 60 Alarm...
  • Page 10 RX3i Power Sync and Measurement System GFK-2748C Update rate = 100 ms or the PLC scan rate (whichever is longer) Timing AB – AllGridAlarmsOK follows the timing of the alarm that causes it to be cleared or set. LEDs State Definition Green The module is operating correctly and communicating with the RX3i.

  • Page 11: Field Wiring

    Wiring size/type: 0.205 mm – 0.410 mm (24–21 AWG) solid/stranded For additional wiring and connectin information, refer to GFK-2749, PACSystems RX3i Power Sync and Measurement Module User's Manual. The PSM Terminal Assembly connects to hazardous voltages. Before installing, testing, or troubleshooting this module, you should refer to the complete instructions in the PACSystems RX3i Power Sync and Measurement Module User's Manual, GFK-2749.

  • Page 12: Release History

    RX3i Power Sync and Measurement System GFK-2748C Release History Firmware Date Version Comments Revision IC694PSM001-AB 1.01 January 2013 Enhanced operation of sync relay feature as described below. IC694PSM001-AA 1.00 December 2012 Initial release Important Product Information for Release 1.01 New Features and Enhancements With this release, the PSM accounts for the breaker delay, and the rate of change of the phase shift between the grids, to time the CloseRelayOK status and ACC200 relay outputs to close the sync relay contacts when the phase shift between the grids is 0⁰.
  • Page 13 RX3i Power Sync and Measurement System GFK-2748C Subject Description Breaker Delay When the ANSI 25 Breaker Delay parameter is set to a non-zero value, the phase angle difference at which CloseRelayOK (%I offset 7) is set and the IC694ACC200 relay outputs close varies, in direct proportion to the rate of change of the phase angle of Grid 2 relative to Grid 1.
  • Page 14 RX3i Power Sync and Measurement System GFK-2748C Subject Description Reverse Power Threshold The Reverse Power Threshold affects Grid 1 and Grid 2 differently:  For Grid 1, the Reverse Power alarm will be triggered if a circuit’s active power exceeds the Reverse Power Threshold for a time period longer than Reverse Power Delay.

This manual is also suitable for:

Ic694psm001-abIc694acc200-a

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