Analog Input Module Indicators 179
Chapter 5 Fault and Alarm Indicators
AI Field Power Indicator
The AI field power indicator is lit when a field power problem has occurred.
Field
Power
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.
To determine the actual state, use a
voltmeter, then correct the problem in the
external circuit.
If these steps do not solve the problem,
replace the module.
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