6 Troubleshooting
- 77 -
Fault Name
Operating
Panel
Display
Cause
Possible Solution
Drive overload
E 10.00
The load is too
heavy or locked-
rotor occurs on the
motor.
Reduce the load or check motor and
mechanical conditions.
The drive power
class is small.
Replace a drive of larger power class.
The control mode
is SVC or FVC but
motor auto-tuning is
not performed.
Set motor parameters according to motor
nameplate and perform motor auto-tuning.
The control mode is
V/F but the setting of
F3-01 (Torque boost)
is too large.
Decrease the setting of F3-01 (Torque boost) by
1.0% gradually or set F3-01 to 0 (Auto torque
boost).
Output phase loss
occurs on the drive. Check the output wiring of the drive.
Pulse-by-pulse
current limit
fault
E 40.01
The load is too
heavy or locked-
rotor occurs on the
motor.
Reduce the load or check motor and
mechanical conditions.
Replace a drive of larger power class.
The drive power
class is small.
Motor overload
E 11.00
F9-01 (Motor
overload protection
gain) is set
improperly.
Set F9-01 correctly. Increase its value to
prolong the motor overload time.
The load is too
heavy or locked-
rotor occurs on the
motor.
Reduce the load or check motor and
mechanical conditions.
Abnormal input
voltage
E 12.01
Input phase loss
Check and ensure:
The power supply is normal.
The input power cables are intact.
The input power cables are properly
connected.
Voltage detection circuitry is normal.
E 12.02
E 12.03
E 12.04
Input voltage is too
high.
Adjust the input voltage within the normal
range.
E 12.05
Three-phase
inputs voltage is
imbalanced.
Check and ensure:
The power supply is normal.
Voltage detection circuitry is normal.
