User Manual Chapter 1
GFK-2749A Jan 2020
PSM Module Description and Specifications 2
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The PSM001 module supports hot swap (removal and replacement in an RX3i rack
that is under power).
1.2 PSM Module
In addition to configuring the PSM module upon project download from PME, the RX3i CPU
can control the PSM module by updating configuration data from the RX3i in the form of
%AQ data words and %Q mode control bits during each sweep.
The PSM module provides calculated data to the CPU in the form of %AI data words and %I
status bits each sweep. The information sent by the PSM module includes power system
measurements and discrete fault status.
Connectors
The PSM module provides two Mini-D 20-pin connectors that accept the GRID 1 and GRID 2
voltage and current signals from the Terminal Assembly.
Indicators
Four LEDs provide status indications for the PSM system.
Figure 1
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