Mdu - Huawei UPS5000-S Series User Manual

UPS5000-S-(50 kVA-300 kVA)
User Manual

2.3.5 MDU

Appearance
Figure 2-28 MDU
(1) Status indicator
Table 2-11 Status indicator
Status
On
Off
Issue 11 (2020-12-07)
NO TE
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–.
Color Meaning
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.
N/A The MDU is powered off.
NO TE
The indicator on the MDU panel is yellow when the bypass supplies power in non-ECO
mode.
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(2) LCD touchscreen
2 Overview
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