Connection of FKT 20.2 motor
Wire number | Wire marking | Description |
Motor connection cable | ||
1 | 10 | Temperature monitoring of motor winding |
2 | 11 | |
3 | Blank | |
4 | K20 | Leakage detection of leakage chamber by leakage float |
5 | K21 | |
Grey (blue) | U1 | Mains connection: L1, L2, L3, start of winding |
Black | V1 | |
Brown | W1 | |
Grey (blue) | U2 | Mains connection: L1, L2, L3, end of winding |
Black | V2 | |
Brown | W2 | |
Green/yellow (gn-ye) | PE | Earth |
Moisture probe cable | ||
6 | DK | Leakage detection of motor compartment |
Mains connection
- Follow the rating plate for the mains connection.
- Make sure that the mains power supply has a clockwise-rotating field.
- Follow the local regulations for earthing.
Temperature monitoring connection
- Connect the PTC sensors to the switchgear or through an evaluation relay. Recommendation: relay “CM-MSS”.
- Connection values: nominal voltage: 7.5 V=, max. voltage 30 V=.
- When the threshold value is reached: Switch off the motor.
Leakage detection connection − motor compartment
- Connect the moisture probe through an evaluation relay. Recommendation: relay “NIV 101/A”.
- The threshold is 30 kOhm.
- When the threshold is reached: Activate an alarm or switch off the motor (recommended).
Leakage detection connection − leakage chamber
- Connect the leakage floater (NC contact) through an evaluation relay with an approval for explosive atmospheres. Recommendation: relay “CM-MSS".
- Connection values: max. 150 V~, 0.5 A, max. 10 VA.
- When the threshold value is reached: Activate an alarm or switch off the motor (recommended).
