4
June
2004
8800-A2-GZ41-20
Providing Redundant Power to One BAC (Recommended)
Procedure
To connect two power modules to one BAC (see
Figure 1
):
1. If none exist, install split bolt connectors or a grounding block near the rack
where the power supply and BAC reside.
NOTE:
Split bolt connectors are not supplied.
2. Connect:
— The grounding lug of the BAC to an earth ground.
— The PWR A –48V terminal of the BAC to the –48VA terminal of the power
supply.
— The PWR A RTN terminal of the BAC to a split bolt connector.
— The 0VRA terminal of the power supply to the split bolt connector.
— The PWR B -48V terminal of the BAC to the –48VB terminal of the power
supply.
— The PWR B RTN terminal of the BAC to a split bolt connector.
— The 0VRB terminal of the power supply to the split bolt connector.
— The split bolt connectors to an earth ground.
3. Verify that the power switches of the PEMs and the power modules are in the
off (0) position.
4. Insert the AC power cords into the Input A and Input B sockets at the rear of
the power supply. Plug the other ends into an AC power source.
5. Turn to the On (1) position the power switches of PEM A and PEM B of the
BAC and both power modules. Verify that the POWER LEDs at the front of the
power modules and the POWER A and POWER B LEDs at the top of the BAC
are on.
