Diagnostics; Psm Module Led Indicators; Psm Module Health Status - GE PACSystems RX3i User Manual

Power sync and measurement system

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Chapter

GFK-2749

Diagnostics

For details on the system status information provided by the LEDs, refer to page 1-2.

The %I offset 1 bit is a PSM heartbeat. It toggles every RX3i Controller scan as an

indication that the PSM module is communicating with the CPU.

The %I offset 2 bit is set to 1 when both cables between the PSM module and the

Terminal Assembly are installed correctly. This means:



GRID1 on the Terminal Assembly is connected to GRID 1 on the PSM module



GRID2 on the Terminal Assembly is connected to GRID 2 on the PSM module



The same voltage range is used for these connections.

Under special installations, the user can use a different arrangement but then must ignore

this indication.

%I offset 8 bit is the "new data" bit that indicates this is the first PLC scan where this

power data is available.

The remaining %I status bits indicate alarms, ANSI functions and signal quality

information. For the functions of the %I bits, refer to "PSM Status Flags" in chapter 3.

4-1

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