Huawei UPS5000-E-600K-SC User Manual page 35

UPS5000-E-(600 kVA-800 kVA)
User Manual

The FE port resembles the RS485 port. Therefore, follow the silk screen when you connect
communications cables. If you mistake the RS485 port as the FE port during cable
connection, the WebUI cannot be connected and MDU communication fails. If you
mistake the FE port as the RS485 port during cable connection, RS485 communication
fails.

If MDU communication fails, the "Comm. failure" message is displayed on the LCD,
screen switching is disabled, the buzzer buzzes, and the fault indicator is red. After you
rectify the fault, the LCD recovers, and the alarm is cleared.

Dry contact signals take effect after you set them. Set unused dry contact signals to the
unused state on the LCD.

In a parallel system, ensure that used dry contacts properly connect to each UPS.
Figure 2-17
Figure 2-17 Monitoring interface card
Table 2-3
Table 2-3 Ports on the monitoring interface card
Port
DO_1
DO_2
Issue 02 (2016-01-20)
shows the signal ports on the monitoring interface card.
describes the ports on the monitoring interface card.
Silk
Screen
NO
COM
NO
COM
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Description
DO indicates critical alarms, minor alarms, bypass
mode, battery mode, low battery voltage, or D.G.
control. DO_1 indicates any of the six meanings (except
for D.G. control); by default, it indicates critical alarms.
The maximum voltage is 14.4 V DC, and the maximum
current is 0.5 A.
DO indicates critical alarms, minor alarms, bypass
mode, battery mode, low battery voltage, or D.G.
control. DO_2 indicates any of the six meanings (except
for D.G. control); by default, it indicates minor alarms.
The maximum voltage is 14.4 V DC, and the maximum
current is 0.5 A.
2 Overview
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