MX2020 AC Power Supply Module LEDs
Each AC PSM faceplate contains four LEDs. These LEDs are described in Table 1. There are a total of eighteen bicolor LEDs located in the craft interface, and are labeled 0 through 8 for the bottom nine PSMs, and 9 through 17 for the top nine PSMs. Both feeds are alive during operation, but only one feed provides current. In addition, a PSM failure triggers the red alarm LED on the craft interface.
Label |
Color |
State |
Description |
|---|---|---|---|
PWR OK |
Green |
On |
Power is functioning normally with no alarms. |
Yellow |
On |
PSM controller is functioning normally. |
|
— |
Off |
PSM is not functioning normally or the AC input voltage is out of range. |
|
FAULT |
Red |
On |
PSM is not functioning normally or the AC input voltage is out of range. |
— |
Off |
PSM is functioning normally. |
|
INP0 |
Green |
On |
AC input is within the required voltage range and the DIP switch is set to on. |
Yellow |
On |
AC input is out of the required voltage range. |
|
— |
Off |
AC input to the PSM is not present. |
|
INP1 |
Green |
On |
AC input is within the required voltage range and the DIP switch is set to on. |
Yellow |
On |
AC input is out of the required voltage range. |
|
— |
Off |
AC input to the PSM is not present. |