Status Led; Removing A Dc Pem - Dell Force10 C150 Manual

Status LED

The status LED indicates the condition of the PEM.
Table 8-3. Status LED Descriptions
LED Display
Off
Flashing Green
Flashing Green
Solid Green

Removing a DC PEM

The left chassis PEM slot is labelled "0" and the right chassis PEM slot is labelled "1." For full
redundancy, each PEM must be attached to a dedicated circuit breaker. For example, PEM "0" connects
to circuit breaker "0" and PEM "1" connects to circuit breaker "1."
WARNING: Prevent exposure and contact with hazardous voltages. Do not attempt to operate this system
with the safety cover removed.
Step Task
Switch the Over Current Protector (located on the PEM front panel) to the OFF position.
1
Turn off power to the PEM. Ensure that the remote power source is in the OFF position and that the PEM Status
2
LED and Pwr In OK LED are off.
Loosen the retaining screw and remove PEM safety cover (see
3
Disconnect power cables attached to the PEM.
4
Slide the PEM out of the slot.
5
If you are not replacing the PEM, close the empty slot with a blank panels (CC-C-BLNK-PWR).
6
Meaning
Off
Over-Current Warning
Over-Temperature Warning The temperature is above the
Power On
Description
No input voltage is present, or the
circuit is turned off.
The load current is above the
warning level threshold. This
warning takes precedence over the
temperature warning.
temperature warning threshold.
The PEM is running normally.
Figure 8-1).
Installing DC Power Entry Modules | 33