Connecting Sensor Circuit Wires - Danfoss VLT PTC Thermistor Card MCB 112 Operating Manual

VLT® PTC Thermistor Card MCB 112
Operating Guide

3.4 Connecting Sensor Circuit Wires

The connections are not pre-wired from factory.
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
Connect the sensor circuit wires for the VLT
Procedure
1.
Select the appropriate sensor wires.
2. Route the sensor wires.
3.
Remove the shielding in the area of the shielding clamps.
1
Illustration 4: Connecting Shielded Wire
1 Shielding clamps
2 Removed shielding
4. Measure the sensor resistance.
5. Connect the sensor circuit wires to X44/T1 and T2, see
Only check PTCs with measuring voltages of <2.5 V.
Danfoss A/S © 2022.08
N O T I C E
N O T I C E
3.5 Maximum Current on MCB 112
PTC Thermistor Card MCB 112 as follows:
®
2
3.4 Connecting Sensor Circuit
N O T I C E
for correct wiring.
Wires.
AQ267038105120en-000101 / 130R0104 | 15
Installation