Huawei UPS5000-A User Manual page 78

UPS5000-A-(60 kVA-120 kVA)-H
User Manual



Connect the EPO button to the dry contacts on the UPS, as shown in
Figure 3-41 EPO NO status
(Optional) Connecting the BCB Box
Open the cover on the BCB box, and connect the BCB ports on the dry contact card to the
control signal ports on the BCB box.
Connecting Communications Cables
Procedure
Step 1 Connect the external network management device to the RS485 port.
Figure 3-42
Issue 05 (2020-01-10)
Huawei does not provide the EPO switch or cable. Prepare them by yourself. The
recommended cable is 22 AWG.
Equip the EPO switch with a protective cover to prevent misoperations, and cover the
cable with protective tubing.
Triggering EPO will shut down the rectifier, inverter, charger, and static bypass, but does
not disconnect the UPS mains input. To power off the UPS completely, turn off the front-
end input switch when you trigger EPO.
The EPO button is normally open. When you press the EPO button, EPO is triggered.
and Table 3-8
Copyright © Huawei Technologies Co., Ltd.
describe the RS485 pin definitions.
3 Installation
Figure 3-41.
70