Mdu - Huawei UPS5000-E Series User Manual

UPS5000-E-(350 kVA–800 kVA)
User Manual (50 kVA Power Modules)
Table 2-10 RS485 pin definition
Pin
1
2
3
4
5
6
7
8

2.3.6 MDU

There are two types of MDUs.
Appearance
Figure 2-32 MDU (flat LCD)
Issue 15 (2022-01-30)
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–.
Copyright © Huawei Technologies Co., Ltd.
Description
RS485_T+
RS485_T–
-
RS485_R+
RS485_R–
GND
-
-
2 Overview
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