UPS5000-A-400 kVA
User Manual (50 kVA, PF=0.9)
2 Overview
Issue 03 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
27
Port
Silk Screen Description
DO_3
NO
DO_3 is used to output alarms and indicates bypass
mode by default. It can be set to indicate critical
alarms, minor alarms, battery mode, or low battery
voltage.
COM
DO_4
NO
DO_4 is used to output alarms and indicates battery
mode by default. It can be set to indicate critical
alarms, minor alarms, bypass mode, or low battery
voltage.
COM
DB26
MDU
Provides FE, RS485, Inter-Integrated Circuit (I2C),
and control area network (CAN) signals.
Battery
temperature
sensor port
B_TEMP
Connects to an indoor battery temperature sensor.
Southbound port 1 COM1
Connects to an ambient temperature and humidity
sensor over two wires.
Southbound port 2 COM2
Connects to a southbound device.
Network port
FE
Connects to the network port on a PC.
Northbound
communicati-ons
port
RS485
Connects to a northbound network management
device or 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 2-15
Wiring method 1