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Troubleshooting
Check the load.
Check the motor.
Check the cables and connections.
Make an identification run.
12.10.2 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.
12.10.3 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.
12.10.4 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
Troubleshooting
Check the load.
Check the motor.
Check the cables and connections.
Make an identification run.
12.10.5 Fault 2 - Overvoltage, Subcode S1 - Hardware trip
Cause
The DC-link voltage is higher than the limits.
Too short a deceleration time
High overvoltage spikes in the supply
Start/Stop sequence too fast
AQ275638903263en-000601 / DPD00910
172 | Danfoss A/S © 2022.12
Specifications
VACON® NXS/NXP Air-cooled
Operating Guide
