Danfoss VACON NXP IP00 Operating Manual page 152

VACON® NXP IP00 Drive Modules
Operating Guide
12.12.2 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.
12.12.3 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.
12.12.4 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
Troubleshooting
• Set the deceleration time longer.
• Use the brake chopper or the brake resistor. They are available as options.
• Activate the overvoltage controller.
• Do a check of the input voltage.
12.12.5 Fault 2 - Overvoltage, Subcode S2 - Overvoltage control supervision
Cause
The DC-link voltage is higher than the limits.
• Too short a deceleration time
• High overvoltage spikes in the supply
• Motor load is generative
• Start/Stop sequence too fast
152 | Danfoss A/S © 2023.09
Specifications
AQ351737303996en-000201 / DPD00888