T640 Three-Phase Delta and Wye AC Power Supply LEDs
Figure 1 shows the LEDs on each three-phase delta AC power supply faceplate. The three-phase wye AC power supply has the same LEDs. The LEDs in Table 1 indicate the status of the power supply. In addition, a power supply failure triggers the red alarm LED on the craft interface.
Figure 1: Delta AC Power Supply LEDs
Table 1: Delta AC Power Supply LEDs
LED | Color | State | Description |
|---|---|---|---|
AC OK—One per power supply | Green | On steadily | The AC terminal block is receiving voltage. |
– | Off | The AC terminal block is not receiving voltage. | |
DC OK—One per power supply | Blue | On steadily | Power supply is functioning normally. |
Blinking | Power supply is starting up, or is not functioning or operating properly, or is not properly installed. | ||
– | Off | The power supply fails or the AC terminal block is not receiving voltage. | |
OVER TEMP—One per power supply | Yellow | On steadily | Power supply has exceeded recommended temperature. |
– | Off | If the DC OK and AC OK are on steadily, this LED indicates that power supply is within the recommended temperature. |
