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UPS5000-E-(25 kVA-75 kVA)-BF
User Manual
2 Overview
Issue 07 (2019-12-13)
Copyright © Huawei Technologies Co., Ltd.
36
Port
Silk
Screen
Description
sensor port
Southbound
communica
tions port 1
COM1
Connects to an ambient temperature and humidity sensor over
two wires.
Southbound
communica
tions port 2
COM2
Connects to a southbound device, such as a BMU.
Network
port
FE
Connects to the network port on a PC.
Northbound
communica
tions port
RS485
Connects to a northbound network management device or a
third-party network management device over two wires.
Signal cables must be double-insulated twisted cables. If the cable length is 25–50 m, the
cross-sectional area must be 0.5–1.5 mm
2
.
RS485 cables and FE cables must be shielded cables.
are recommended wiring methods for DO ports.
Figure 2-24
Wiring method 1
Figure 2-25
Wiring method 2