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UPS5000-E-(25 kVA-125 kVA)-FM
User Manual
2 Overview
Issue 06 (2019-12-13)
Copyright © Huawei Technologies Co., Ltd.
35
If cables are prepared onsite, follow the three methods below:
Connect pin 1 and pin 2. Pin 1 connects to RS485+ and pin 2 connects to RS485–.
Connect pin 4 and pin 5. Pin 4 connects to RS485+ and pin 5 connects to RS485–.
Connect pins 1, 2, 4, and 5. Twist cables to pin 1 and pin 4 into one cable and then connect it to
RS485+. Twist cables to pin 2 and pin 5 into one cable and then connect it to RS485–.
2.3.6 MDU
Appearance
Figure 2-23
MDU
(1) Status indicator
(2) LCD touchscreen
Table 2-9
Status indicator
Status
Color
Meaning
On
Red
A critical alarm has been generated, and the buzzer sounds
continuously.
Yellow
A minor alarm has been generated, and the buzzer buzzes at 2 Hz.
Green
The UPS is running properly or a warning has been generated.
Off
N/A
The MDU is powered off.
The indicator on the MDU panel is yellow when the bypass supplies power in non-ECO mode.