UPS5000-E-(40 kVA-320 kVA)
User Manual
3 Installation
Issue 10 (2015-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
86
Figure 3-58
Connecting the MDU port
Step 2
Connect the monitoring units such as an alarm indicator to the dry contacts on the monitoring
interface card.
Step 3
Connect the external network management device to the RS485 port.
describe the RS485 pin definitions.
Figure 3-59
RS485 pins
Table 3-8
Pin definition
Pin
Description
1
2
RS485_T–
3
-
4
5
RS485_R–
6
GND
7
-