Chapter 6 Fault Code Information
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VFD-B-P Series
6-2
Revision April 2009, SW V1.00
Fault
Name
Fault Descriptions
Corrective Actions
Overload
The AC motor drive detects
excessive drive output current.
NOTE: The AC motor drive
can withstand up to 150% of
the rated current for a
maximum of 60 seconds.
1. Check whether the motor is overloaded.
2. Reduce torque compensation setting in Pr.7-
02.
3. Use the next higher power AC motor drive
model.
Overload 1
Internal electronic overload trip
1. Check for possible motor overload.
2. Reduce the current level so that the drive
output current does not exceed the value set
by the Motor Rated Current Pr.7-00.
3. Check
electronic
thermal overload setting.
4. Use a higher power motor.
Overload 2
Motor overload.
1. Reduce the motor load.
2. Adjust the over-torque detection setting to an
appropriate setting (Pr.06-03 to Pr.06-05).
GFF hardware error
CC (current clamp)
OC hardware error
OV hardware error
Return to the factory.
External Base Block.
(Refer to Pr. 08-06)
1.
When the external input terminal (B.B) is
active, the AC motor drive output will be
turned off.
2. Deactivate
the
external input terminal (B.B) to
operate the AC motor drive again.
Over-current during
acceleration
1.
Check for loose contacts between the AC
motor drive and motor
2.
Short-circuit at motor output: Check for
possible poor insulation at the output lines.
3.
Acceleration Time too short: Increase the
Acceleration Time.
4.
Torque boost too high: Decrease the torque
compensation setting in Pr.7-02.
5.
AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
Over-current during
deceleration
1.
Short-circuit at motor output: Check for
possible poor insulation at the output line.
2.
Deceleration Time too short: Increase the
Deceleration Time.
3.
AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
