Huawei ECC500 User Manual page 27

ECC500 (Data Center)
User Manual
Silk screen
COM3
DC input
terminals
Issue 06 (2020-01-06)
Description
 Receives data.
−
−
 Transmits data.
−
−

CAN differential signals
−
−
Southbound RS485 port for monitoring UPS 2
 Receives data.
−
−
 Transmits data.
−
−
 7, 8: DO+, DO-
–48 V DC input port
 RTN+: positive DC input terminal
 NEG-: negative DC input terminal

If the system has one Emerson UPS, connect the monitor signal lines to COM1.

If the system has two Emerson UPSs, connect all monitor signal lines to COM1 and switch the DIP2
on.
Copyright © Huawei Technologies Co., Ltd.
1: RX+
2: RX-
4: TX+
5: TX-
7: CANH
8: CANL
1: RX+
2: RX-
4: TX+
5: TX-
3 Architecture
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