The 24 V and 24 V emergency stop supply or the two-hand control 24 V power supply are missing at Unicontrol Coldfire or Unicontrol ARM node.
Description
The 24 V and 24 V emergency stop supply or the two-hand control 24 V power supply are missing at Unicontrol Coldfire or Unicontrol ARM node.
Remedy
- 24 V power supply: check the 24 V power supply at the X23 plug. Check the power supply LED at the node. Replace the Unicontrol node. Without the 24 V power supply, the safety controller (PNOZ) cannot be reset.
- Block 1: check the 24 V voltage and bridge to X2:B1
- Block 2: check the 24 V voltage and bridge to X2:B2