1.
2.
3.
4.
5.
3.4 Connecting Sensor Circuit Wires
N O T I C E
The connections are not pre-wired from factory.
N O T I C E
Route the sensor circuit wires as separate control wires. It is not allowed to use wires from the supply cable or any other mains
cables. Use shielded control wires. See
3.5 Maximum Current on MCB 112
Connect the sensor circuit wires for the VLT
®
PTC Thermistor Card MCB 112 as follows:
Procedure
Select the appropriate sensor wires.
Route the sensor wires.
Remove the shielding in the area of the shielding clamps.
e
3
0
b
t3
4
0
.1
2
1
2
Illustration 4: Connecting Shielded Wire
1
Shielding clamps
2
Removed shielding
Measure the sensor resistance.
Connect the sensor circuit wires to X44/T1 and T2, see
3.4 Connecting Sensor Circuit Wires
.
N O T I C E
Only check PTCs with measuring voltages of <2.5 V.
AQ267038105120en-000101 / 130R0104 | 15
Danfoss A/S © 2022.08
Installation
VLT® PTC Thermistor Card MCB 112
Operating Guide