Huawei ECC500 User Manual page 26

ECC500 (Data Center)
User Manual
Silk
screen
ALM
Table 3-6
Table 3-6 Port description
Silk screen
ELU
DI_1
DI_2
DI_3
AI_1
AI_2
TEM_HUM
WATER
SMOKE
CAN
12 V
COM1
GATE
COM2
Issue 06 (2020-01-06)
Color Name
Red Alarm
indicator
describes ports on the front panel of the basic I/O module.
Description
Reserved for future use

1: supplies 5 V power for the electronic label
 3, 6: GND

4: I2C data line
 5: I2C clock signal line
 7: supplies 5 V power for 1-WIRE extension module
 8: 1-WIRE signal line
Dry contact for receiving alarms reported by the lightning arrestor.
Default setting:
 If the dry contact is closed, an alarm is generated

If the dry contact is open, no alarm is generated
Reserved for future use (connects to a camera)
Reserved for future use (connects to a indoor smoke sensor)
Reserved for future use
Reserved for future use
Connects to an ambient temperature and humidity sensor
Connects to a water sensor
Connects to a smoke sensor
CAN communication port
Outputs power between 10.5 V and 13.5 V, connects to a indoor smoke
sensor
Two-wire RS485 port reserved for southbound communication
Dry contact for receiving door status alarms. Default setting:
 If the dry contact is open, no alarm is generated
 If the dry contact is closed, an alarm is generated
Southbound RS485 port for monitoring UPS 1
Copyright © Huawei Technologies Co., Ltd.
Status Description
(0.125s on and the I/O module and the main
0.125s off) control module.
Off No alarm is generated.
3 Architecture
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