UPS5000-S-1600 kVA
User Manual
2 Overview
Issue 04 (2020-03-03)
Copyright © Huawei Technologies Co., Ltd.
33
2.3.5.1.4 Monitoring Interface Card
Dry contact signals take effect after you set them. Disable unused dry contact signals on
the monitoring system.
In a parallel system, ensure that used dry contacts properly connect to each UPS.
The monitoring interface card provides external ports as well as monitoring and control
functions for the MDU. The ports include the ambient temperature and humidity sensor port,
FE port, battery temperature monitoring port, and RS485 port. The MDU monitors the UPS,
allows users to set parameters, delivers commands, reports information, and displays the UPS
key information and parameters on the LCD.
Figure 2-16
Monitoring interface card
DO_1 to DO_4 meet the maximum voltage and current requirements of 30 V DC/1 A or 60 V DC/0.5 A.
Table 2-7
Description of ports on the monitoring interface card
Port
Silk Screen Control
Module 1
Control
Module 2
Description
DO_1
NO
In use
Controls the
entire UPS
system.
Reserved
DO_1 is used to output alarms and
indicates critical alarms by default. It can
be set to indicate minor alarms, bypass
mode, battery mode, or low battery
voltage.
COM
DO_2
NO
DO_2 is used to output alarms and
indicates minor alarms by default. It can
be set to indicate critical alarms, bypass
mode, battery mode, or low battery
voltage.
COM
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
COM