Pulse Input Module Indicators 191
Chapter 5 Fault and Alarm Indicators
PI Field Fault Indicator
The PI field fault indicator is lit when a field power problem has occurred.
PI Point Indicators
The PI point indicators identify whether the point is greater than or less than 0.5 Hz.
Field Description Action
Yellow
steady
Field power from one or more
of the redundant sources is
missing.
To isolate the missing power source, use
the TriStation Diagnostic Panel.
Point (1-6) Description
Green steady Input frequency is greater than 0.5 Hz.
No light Input frequency is less than 0.5 Hz.
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