Make sure that you have the replacement spare part available.
-
Switch off both AC (mains) power switch and battery switch.
Make sure that there is no AC (mains) power available for the system.
- 1
- Battery switch
- 2
- AC (mains) power switch
-
Open the 2 screws but do not remove them. Pull them approximately 5 mm out from the
mast or sensor support arm.
- 1
- Screw (2 pcs)
- 2
- Measurement unit cable
- 3
- Cable tie
- 4
- Rubber cover
-
Disconnect the cable from the cable gland in the interface unit and disconnect the
wires.
- 1
- Cable gland for measurement unit cable
-
Connect the replacement cable to the cable gland in the interface unit and connect the
wires on the connector board.
The board includes markings to indicate how to connect the wires. - 1
- Measurement unit wiring
Measurement unit cable pinout Pin mm2 Wire color Description 7 1 Black Operating voltage Vin− 6 1 Red Operating voltage Vin+ 5 1 White-red Heating voltage VH+ 8 1 White-black Heating voltage VH− 13 0.14 Violet COM3: RS-485A 2 0.14 White-violet COM3: RS-485B 1 0.25 Brown Day/Night switch 14 0.14 White-orange Ethernet TX+ 4 0.14 Orange Ethernet TX− 15 0.14 White-green Ethernet RX+ 3 0.14 Green Ethernet RX− 10 0.14 White-blue COM1: GND1 16 0.14 Pink COM1: RS-232 TX / RS-485B 9 0.14 White-pink COM1: RS-232 RX / RS-485A 11 0.25 Blue COM2: GND2 12 0.14 Gray COM2: RS-232 TX / RS-485B 17 0.14 White-gray COM2: RS-232 RX / RS-485A