FR500F Series Special Purpose Inverter
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Chapter 4 Maintenance and Troubleshooting
FR500F series inverter provide a number of warning information and protection, when a fault
occurs, the protective function actions, the inverter will stop output, inverter fault relay contact actions,
and the inverter displays fault code on its display panel. Before asking for service, user can do the
self-examination tips according to this section, analyze fault reason, and find solutions. If the fault still
cannot be solved, pls ask for services, or contact the dealer who sold you inverter, or directly contact
our company.
Display
Fault Name
Possible Troubleshooting
Fault Solutions
Err01
Acce
overcurrent
1: The output circuit is
grounded or short circuited.
2: The acceleration time is too
short.
3: Manual torque boost or V/F
curve is not appropriate.
4: The voltage is too low.
5: The startup operation is
performed on the rotating
motor.
6: A sudden load is added
during acceleration.
7: The AC drive model is of too
small power class.
1: Eliminate external faults.
2: Increase the acceleration time.
3: Adjust the manual torque
boost or V/F curve.
4: Adjust the voltage to normal
range.
5: Select rotational speed
tracking restart or start the motor
after it stops.
6: Remove the added load.
7: Select an AC drive of
higher power class
Err02
Dece
overcurrent
1: The output circuit is
grounded or short circuited.
2: The deceleration time is too
short.
3: The voltage is too low.
4: A sudden load is added
during deceleration.
5: The braking unit and braking
resistor are not installed.
1: Eliminate external faults.
2: Increase the deceleration time.
3: Adjust the voltage to normal
range.
4: Remove the added load.
5: Install the braking unit and
braking resistor.
Err03
Constant-s
peed
overcurrent
1: The output circuit is
grounded or short circuited.
2: The voltage is too low.
3: A sudden load is added
during operation.
4: The AC drive model is of too
small power class.
1: Eliminate external faults
2: Adjust the voltage to normal
range.
3: Remove the added load
4: Select an AC drive of higher
power class.
Err04
Acce
overvoltage
1: The input voltage is too
high.
2: An external force drives the
motor during acceleration.
3: The acceleration time is too
short.
4: The braking unit and braking
resistor are not installed.
1: Adjust the voltage to normal
range.
2: Cancel the external force or
install a braking resistor.
3: Increase the acceleration time.
4: Install the braking unit and
braking resistor.
Err05
Dece
overvoltage
1: The input voltage is too
high.
2: An external force drives the
motor during deceleration.
3: The deceleration time is too
short.
1: Adjust the voltage to normal
range.
2: Cancel the external force or
install the braking resistor.
3: Increase the deceleration time.
4: Install the braking unit and
