FR500D Series Special Purpose Inverter for Elevator
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Chapter 4 Troubleshooting
FR500D inverter provides a number of warning information and protection, when a fault occurs,
the protective function is activated, the inverter will stop output, inverter fault relay contact, and in the
inverter displays the fault code on the display panel. Before seeking service user can press the
self-examination tips in this section, analyze problems, and identify solutions. If the problem still
cannot be excluded, seek services, or contact the dealer you purchase the inverter with my company.
Display
Fault Name
Possible Causes
Solutions
Err01
Accel
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
Decel
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-speed
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
Accel
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.
