Huawei ECC500 User Manual page 31

ECC500
User Manual
Table 3-8 Description of indicators on the front panel of the AI/DI expansion card
Silk Screen
PWR
RUN
ALM
Table 3-9
Table 3-9 Description of ports on the front panel of the AI/DI expansion card
Silk Screen
DO
12V/0.3A
AI/DI_1,
AI/DI_2,
AI/DI_3, and
AI/DI_4
Issue 04 (2019-12-20)
Color
Green
Green
Red
describes ports on the front panel of the AI/DI expansion card.
Port Description
Provides the DO control function.
 NO

COM
Provides a 12 V DC output for supplying less than 300 mA power to
devices such as the audible and visual alarms.

12 V DC, 300 mA
 GND
Provide 12 V DC outputs for sensors and are compatible with 4 mA to
20 mA current signals, signals from current-based smoke sensors and
water sensors, dry contact signals, and NTC signals.
Pin definition:

3: 12 V DC, 54 mA
Copyright © Huawei Technologies Co., Ltd.
Meaning Status
Power indicator Steady on
Off
Run indicator Blinking (1
second on and 1
second off)
Blinking (0.125
second on and
0.125 second
off)
Alarm indicator Off
Steady on
3 Configurations and Port
Description
The power
supply is
normal.
The AI/DI
expansion card
is faulty or has
no DC input.
The AI/DI
expansion card
is
communicating
with the main
control module
properly.
The AI/DI
expansion card
fails to
communicate
with the main
control module.
No alarm is
generated.
A board alarm is
generated.
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