MX2020 High-Voltage Universal Power Supply Module LEDs
Each high-voltage second-generation universal (HVAC/HVDC) PSM
faceplate contains four LEDs. These LEDs are shown in Figure 1 and Table 1. Eighteen bicolor
LEDs labeled 0 through 8 for the bottom nine PSMs, and 9 through 17 for the top nine PSMs, are located in the center of
the craft interface.
The primary input of the PSM is a dual redundant feed, INP0 and INP1. Both feeds are active
during operation, and both feeds share load current when present.
In addition, a PSM failure triggers the alarm LED on the craft interface.
Table 1: MX2020 High-Voltage Universal (HVAC/HVDC) Power Supply Module LEDs
INP0 (V) AC or DC within range | INP1 (V) AC or DC within range | Dip 0 | Dip 1 | PSM Switch |
|
|
|
| PWR OK | 52V out | 5V out |
|---|---|---|---|---|---|---|---|---|---|---|---|
Yes | Yes | 1 | 0 | Off | Green | Off | Blinking amber | Off | Off | Off | Off |
Yes | 0 | 1 | 0 | On | Green | Off | Green | Off | On | On | On |
0 | Yes | 0 | 1 | Off | Off | Green | Blinking amber | Off | Off | Off | Off |
0 | Yes | 1 | 1 | On | Off | Green | Green | Off | On | On | On |
Yes | Yes | 1 | 1 | Off | Green | Green | Blinking amber | Off | Off | Off | Off |
Yes | Yes | 1 | 1 | On | Green | Green | Green | Off | On | On | On |
Yes | Yes | 0 | 0 | Off | Green | Green | Blinking amber | Off | Off | Off | Off |
Yes | Yes | 0 | 0 | On | Green | Green | Green | Off | On | On | On |
Yes | 0 | 0 | 1 | Off | Green | Off | Blinking amber | Red | Off | On | Off |
Yes | 0 | 0 | 1 | On | Green | Off | Green | Red | On | On | On |
0 | Yes | 1 | 0 | Off | Off | Green | Blinking amber | Red | Off | On | Off |
0 | Yes | 1 | 0 | On | Off | Green | Green | Red | On | On | On |