Vacon apfiff09 marine, Applications Manual, Page: 296 / 310

apfiff09 marine VACON®
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295
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
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12. FAULT CODES
F1 Overcurrent fault
There is too high a current (>4*IH) in the motor cable.
S1 = Hardware trip :
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Current above 4*Ih
S3 = Current controller supervision.
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Current limit too low or current peak value too high.
S4 = Software trip:
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User configured software over current limit exceeded.
➢
Check Motor Protection for software over current trip limit settings
Possible cause and solutions
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Sudden increase in load
o
Check motor load.
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Short circuit in motor cables
o
Check motor and cables.
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Motor is under magnetized at start.
o
Check motor name plate data.
o
Make identification run
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Sine filter is used but drive settings are not correct
o
Activate Sine filter parameter (P6.7.5) in system menu.
F2 Overvoltage fault
DC-link voltage has exceeded the drive protection limits.
S1 = Hardware trip.
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500 Vac unit DC voltage above 911 Vdc
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690 Vac unit DC voltage above 1200 Vdc
S2 = Overvoltage control supervision (only 690 Vac unit).
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DC voltage has been above 1100 Vdc for too long.
Possible cause and solutions
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Too short a deceleration time
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Increase deceleration time.
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Use brake chopper and brake resistor.
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Use Brake chopper unit.
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Use active front end unit.
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Activate overvoltage controller.
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High overvoltage spikes in supply
o
Activate overvoltage controller.
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High generator side power
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AFE current/power limit too low
F3 Earth fault
Earth fault protection ensures that the sum of the motor phase currents is zero. The overcurrent
protection is always working and protects the AC drive from earth faults with high currents.
S1 = Sum of motor current is not zero
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Insulation failure in cables or motor
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Check motor cables and motor.