Huawei ECC500 - Page 29

ECC500
User Manual
3 Configurations and Port
Issue 05 (2020-03-16)
Copyright © Huawei Technologies Co., Ltd.
21
Silk Screen
Color
Meaning
Status
Description
control module
properly.
Blinking (0.125
second on and
0.125 second
off)
The RS485
communication
card fails to
communicate
with the main
control module.
ALM
Red
Alarm indicator
Off
No alarm is
generated.
Steady on
A board alarm is
generated.
COM4/12V
Green
Port power
output indicator
Steady on
The port
properly
provides the 12
V DC output.
COM5/12V
Off
The port
provides no 12
V DC output.
Table 3-7 describes ports on the front panel of the RS485 communication card.
Table 3-7 Description of ports on the front panel of the RS485 communication card
Silk Screen
Port Description
COM1, COM2,
and COM3
Connect to intelligent equipment, such as the PDU8000, UPS, and
cooling equipment.

1: A

2: B

4: A

5: B
COM4/12V and
COM5/12V
Provide DC outputs of 12 V (actual range: 12.8-15 V), 400 mA to
equipment such as Independent Deployment AI/DI Unit, intelligent
ambient temperature and humidity sensors, and electronic door locks.

1: A

2: B

3: 12 V DC power

4: A

5: B

8: GND