Huawei ECC500 User Manual page 29

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