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Steps
Figure 27: 1/0 Power ON/OFF Switches
1
Step 3
Verify that none of the Output OK LEDs on the front of the PMs installed in the tray are green.
Step 4
If you have a DC power system installed, perform the following steps:
a) Insert the power fuse at the BDFB or power plant to energize power tray 0, PM 0.
b) Measure the voltage at the input terminal block and verify that the DC voltage between the positive and negative
terminals is between –48 VDC and –60 VDC.
Caution
Caution
c) Verify that the correct Input OK LED on the front of the PM is lit.
d) Repeat Steps a through b for each of the remaining DC inputs.
e) Continue to Step 7.
Step 5
If you have an AC power system installed, perform the following steps:
a) Open the circuit breaker for each feed on the PDU or the individual single-phase input for each installed PM at the
circuit breaker cabinet.
b) Energize the individual single-phase breaker at the circuit breaker panel one at a time, and verify the correct input
LED lights.
c) Close PM0 (AB) on the PDU and verify that the Input OK LED is lit on the front of the PM that is energized.
d) Repeat Step c for the remaining PMs.
Step 6
Turn the I/0 switches at the rear to the ON position, and verify the output LED is on.
Step 7
Verify that the fan tray status LEDs are lit and that the fans are running.
Installing Power Components
28
Make sure that the polarity of the DC input power cabling is correct. This is a negative voltage system.
This is a positive ground system; make sure to connect the positive lead to the +RTN terminal and the
negative lead to the –48V terminal.
I/0 power ON/OFF switches
Installing Power Components
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