Huawei PDU8000 Quick Manual page 15

Scenario 2: dual-input PDC; either of the two pairs of fire control input
cables can control all loads to power off.
Separate the two routes of fire control cables and connect them to the fire control signal
wiring terminals on both sides at the cabinet rear. Connect the positive and negative terminals of
each pair of control cables to the 24VDC(+) and 24VDC(-) wiring terminals at the rear left and rear
right of the cabinet respectively.
1. 24 V DC cables routed into the PDC should be shielded cables.
2. Ensure that the polarities of 24 V DC cables routed into the PDC are correct.
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