Mdu - Huawei UPS5000-A-200K-ST User Manual

UPS5000-A-(200 kVA-800 kVA)
User Manual
Figure 2-36 RS485 pins
Table 2-10 RS485 pin definition
Pin
1
2
3
4
5
6
7
8

2.5 MDU

There are two types of MDUs.
Issue 05 (2020-04-27)
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–.
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Description
RS485_T+
RS485_T–
-
RS485_R+
RS485_R–
GND
-
-
2 Overview
50