WIKA air2guide A2G-85 Operating Instructions Manual page 15

5. Commissioning, operation
5.2 Electrical mounting
The ventilation duct sensor is designed to operate with safety extra-low
voltage (SELV). It must be operated at a constant operating voltage
(±0.2 V). Current/voltage spikes from switching the supply voltage on or
off must be prevented by the customer.
Unscrew the strain relief and connect the cable in accordance with the
connection diagram. Then screw the strain relief back tightly.
Connection diagram
Optional mA output
Modbus output signal
®
WIKA operating instructions model A2G-85
Output DC 0/2 ... 5/10 V
CO
2
Output DC 0/2 ... 5/10 V
T
24 V
GND
Output 4 ... 20 mA
CO
2
Output 4 ... 20 mA
T
A
B
24 V
GND
Supply voltage U
B
Modbus A
®
Modbus B
®
Supply voltage U
B
EN
V V
15