Danfoss VACON NX All-in-One Application Manual page 327

VACON® NX All-in-One
Application Guide
11 Fault Tracing
11.1 Faults and Alarms
11.1.1 Fault 1 - Overcurrent, Subcode S1 - Hardware trip
Cause
There is too high a current in the motor cable. Its cause can be 1 of the following:
• A sudden heavy load increase
• A short circuit in the motor cables
• The motor is not the correct type
Troubleshooting
• Check the load.
• Check the motor.
• Check the cables and connections.
• Make an identification run.
11.1.2 Fault 1 - Overcurrent, Subcode S2 - Current cutter supervision (VACON® NXS)
Cause
There is too high a current in the motor cable. Its cause can be 1 of the following:
• a sudden heavy load increase
• a short circuit in the motor cables
• the motor is not the correct type
Troubleshooting
• Check the load.
• Check the motor.
• Check the cables and connections.
• Make an identification run.
11.1.3 Fault 1 - Overcurrent, Subcode S3 - Current limit controller supervision
Cause
There is too high a current in the motor cable. Its cause can be 1 of the following:
• A sudden heavy load increase
• A short circuit in the motor cables
• The motor is not the correct type
Troubleshooting
• Check the load.
• Check the motor.
• Check the cables and connections.
• Make an identification run.
11.1.4 Fault 1 - Overcurrent, Subcode S4 - Software-based overcurrent fault
Cause
There is too high a current in the motor cable. Its cause can be 1 of the following:
• A sudden heavy load increase
• A short circuit in the motor cables
• The motor is not the correct type
Danfoss A/S © 2023.02
Fault Tracing
AB296635287482en-000301 / DPD00903 | 327