Gprs Expansion Card - Huawei ECC500 User Manual

ECC500
User Manual
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

3.2.5 GPRS Expansion Card

Figure 3-7
Figure 3-7 Front panel of the GPRS expansion card
(1) DO_1
Issue 03 (2020-01-06)
 Do not connect an active sensor to an AI/DI port. Otherwise, the port will be invalid.
 Sensors including 4 mA to 20 mA sensors, door status sensors, water sensors, and smoke sensors
provide data for the ports.
 The power supply of each AI/DI port can be separately controlled. Each port provides a maximum of
14.6 V, 54 mA output power.
shows the front panel of the GPRS expansion card.
(2) DO_2
Copyright © Huawei Technologies Co., Ltd.
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
 6: D-

7: D+
 8: GND
(3) DI_1
3 Configurations and Port
(4) DI_2
24