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AC Power Supply LEDs

Each AC power supply faceplate contains three LEDs that indicate the status of the power supply (see Table 15). The power supply status is also reflected in two LEDs on the craft interface. In addition, a power supply failure triggers the red alarm LED on the craft interface.

Table 15: AC Power Supply LEDs

Label

Color

State

Description

AC OK

Amber

Off

AC power input voltage is below 78 VAC.

Green

On

AC power input voltage is within 78–264 VAC.

DC OK

Green

Off

DC power outputs generated by the power supply are not within the normal operating ranges.

On

DC power outputs generated by the power supply are within the normal operating ranges.

PS FAIL

Red

Off

Power supply is functioning normally.

On

Power supply is not functioning normally and its output voltage is out of regulation limits. Check AC OK and DC OK LEDs for more information.


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