Huawei FusionModule500

FusionModule500 Smart Mini Data Center
Product Description (ECC800e)
3 System Architecture
Issue 05 (2019-11-22)
Copyright © Huawei Technologies Co., Ltd.
42
Silk Screen
Port Description
AI/DI_1 to
AI/DI_8
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
The AI/DI module is configured with a 4-bit DIP switch. Set toggle switches 1 to 3 to
configure the address of the AI/DI module, and set toggle switch 4 to enable or disable the
build-out resistor for the RS485 port.
Table 3-22 Mapping between the independent deployment AI/DI unit address and the DIP switch
settings
Address
SW1
SW2
SW3
1
OFF
ON
ON
2
ON
OFF
ON
If the signal quality is poor due to signal reflection caused by long communications cables (longer than
50 m), set toggle switch 4 to ON for the furthest independent deployment AI/DI unit. After the DIP
switch settings are modified, power off and restart the independent deployment AI/DI unit for the new
settings to take effect.
3.4.4 Smoke Detector
A smoke detector detects smoke around cabinets.