DC Power Supply
Table 1: DC Power Supply Electrical Specifications
Item | Specification |
Maximum output power | 2800 W |
DC input voltage | Minimum: |
| Nominal: |
| Operating range: |
| NOTE: If the input voltage from the DC power source drops below |
| |
| During automatic shutdown, the circuit remains active. When the |
| input voltage returns to |
| automatically starts up again and the system returns to normal |
| operation within 30 minutes. No operator intervention is required. |
DC input current rating | 70 A maximum @ |
Internal Supplementary | 80 A |
Protector |
|
DC Power Supply LEDs
Each DC power supply faceplate contains three LEDs that indicate the status of the power supply (see Table 2 on page 3). The power supply status is also reflected in two LEDs on the craft interface (see the MX960 Ethernet Services Router Hardware Guide). In addition, a power supply failure triggers the red alarm LED on the craft interface.
Table 2: DC Power Supply LEDs
Label | Color | State | Description |
PWR OK | Green | Off | Power supply is not functioning normally. Check the INPUT OK LED for more |
|
|
| information. |
|
| On | Power supply is functioning normally. |
BREAKER | Green | Off | DC power supply circuit breaker is turned off. |
ON |
|
|
|
|
| On | DC power supply circuit breaker is turned on. |
INPUT OK | Green | Off | DC input to the PEM is not present. |
|
| On | DC input is present, and is connected in correct polarity. |
| Amber | On | DC input is present, but connected in reverse polarity. |
DC Power Supply ■ 3