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SV01N_13418587 EN/DE/ES/FR/IT/PT
Troubleshooting and Diagnostics
Fault Cause Remedy
(1)
f.OF
Output fault:
Transistor fault
Output short circuit Check motor/motor cable
Acceleration time too short Increase P104, P125
Severe motor overload, due to:
• Mechanical problem
• Drive/motor too small for application
• Check machine / system
• Verify drive/motor are proper size for
application
Boost values too high Decrease P168, P169
Excessive capacitive charging current of
the motor cable
• Use shorter motor cables with lower charging
current
• Use low capacitance motor cables
• Install reactor between motor and drive.
Failed output transistor Contact factory technical support
f.OF1
Output fault: Ground fault Grounded motor phase Check motor and motor cable
Excessive capacitive charging current of
the motor cable
Use shorter motor cables with lower charging
current
f.PF
Motor Overload fault Excessive motor load for too long • Verify proper setting of P108
• Verify drive and motor are proper size for
application
f.rF
Flying Restart fault Controller was unable to synchronize with
the motor during restart attempt; (P110
= 5 or 6)
Check motor / load
f.SF
Single-Phase fault A mains phase has been lost Check mains voltage
f.UF
Start fault Start command was present when power
was applied (P110 = 0 or 2).
• Must wait at least 2 seconds after power-up
to apply Start command
• Consider alternate starting method (P110).
f.FAU
TB5 (0-10V signal)
Threshold fault
0-10V signal (at TB5) drops below the value
set in P158.
• Check signal/signal wire
• Refer to parameters P157 and P158
(1) The drive can only be restarted if the error message has been reset.
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