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T640 Two-Input 160-A DC Power Supply LEDs

 

Four LEDs on each two-input 160-A DC power supply faceplate indicate the status of the power supply. In addition, a power supply failure triggers the red alarm LED on the craft interface. Table 1 describes the functions of the power supply LEDs.

Table 1: Two-Input 160-A DC Power Supply LEDs

LED

Color

State

Description

CB OK

Green

On steadily

Circuit breaker is on.

Off

Circuit breaker is off.

CB TRIP

Yellow

On steadily

Circuit breaker is not turned on, or host subsystem has detected a failure and has turned the circuit breaker off.

Off

No problems have occured with circuit breaker, or the power supply is off.

OVER TEMP

Yellow

On steadily

Power supply has exceeded recommended temperature.

Off

Power supply is within the recommended temperature or is not turned on.

DC OK

Blue

On steadily

Power supply is installed correctly and is functioning normally.

Blinking

Power supply is starting up, is not properly installed, or is not functioning correctly. One of the inputs might have failed, or the power supply might not be receiving sufficient power.

Off

Power supply is not powered on.