Technical Documentation
T640 Three-Input 240-A DC Power Supply LEDs
LEDs on each power supply faceplate (see Figure 1) 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.
Figure 1: Three-Input 240-A DC Power Supply LEDs
Table 1 describes the three-input 240-A DC power supply LEDs.
Table 1: Three-Input 240-A DC Power Supply LEDs
LED | Color | State | Description |
|---|---|---|---|
CB ON—One per input | Green | On steadily | Circuit breaker is on. |
Off | Circuit breaker is not turned on, or host subsystem has detected a failure and has turned the circuit breaker off. | ||
DC OK—One per power supply | Blue | On steadily | When the power supply is correctly set to 2-INPUT mode and INPUT 0 and INPUT 1 are properly energized, the DC OK LED indicates that the power supply is functioning normally. |
Blinking | Power supply is starting up, is not functioning, is not properly installed, or is not operating properly. | ||
INPUT PRESENT—One per input | Green | On steadily | Input is receiving voltage. |
Off | Input voltage is not present. | ||
OVER TEMP—One per power supply | Yellow | On steadily | Power supply has exceeded recommended temperature. |
Off | Power supply is within the recommended temperature or the power supply is not on. |
