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Operating Guide | VACON® NXS/NXP Air-cooled
Troubleshooting
•
Set the deceleration time longer.
•
Use the brake chopper or the brake resistor. They are available as options.
•
Activate the overvoltage controller.
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Do a check of the input voltage.
12.10.6 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
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Motor load is generative
•
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.
12.10.7 Fault 3 - Earth fault
Cause
The measurement of current tells that the sum of the motor phase current is not zero.
•
Insulation malfunction in the cables or in the motor.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
Do a check of the motor cables and the motor.
12.10.8 Fault 5 - Charging switch
Cause
The charging switch is open, when the START command is given.
•
Operation malfunction
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Defective component
200 | Danfoss A/S © 2020.02
Specifications
AQ275638903263en-000301 / DPD00910
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