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Fa ult s and s olu tio ns
EC 600 0
Op era tio n and d isp lay
EC 600 0
7.3 Description of Keys on the LED operation panel
PRG
＜/＞
RUN
STOP
Key
Programming Set parameters
Move left and right function keys
RUN key Forward RUN(FRD)
STOP key
Functi o n
Number INCREASE/DECEREASE and ENTER key
Exit and fault reset function
ESC
8.Faults and solutions
Display
Err01
Err02
Fault
name
Inverter unit
protection
Overcurrent
during
acceleration
Possible causes
1: The output circuit is grounded
or short circuited.
2: The power cable between the
motor and the AC drive is too
long.
3: The power module is overheated.
4: The internal connections
become loose.
5:The main control board is
faulty.
6: The drive board is faulty.
7: The inverter module is faulty.
1: The output circuit is grounded
or short circuited.
2: Motor auto-tuning is not
performed.
3: The acceleration time is too
short.
4: Manual torque boost or V/F
curve is not appropriate.
5: The input voltage is too low.
6: The startup operation is
performed on the rotating motor.
7: A sudden load is added during
acceleration.
8: The AC drive model is of too
small power class.
Solutions
1: Eliminate external faults.
2: Install a reactor or an output filter.
3: Check the air filter and the cooling
fan.
4: Connect all cables properly.
5: Seek technical support.
6: Seek technical support.
7: Seek technical support.
1: Eliminate external faults.
2: Perform the motor auto-tuning.
3: Increase the acceleration time.
4: Adjust the manual torque boost or V/F
curve.
5: Adjust the voltage to the normal range.
6: Select rotational speed tracking
restart or start the motor after it stops.
7: Remove the added load.
8: Select an AC drive of higher power
class.
Err03
Overcurrent
during
deceleration
1: The output circuit is grounded
or short circuited.
2: Motor auto-tuning is not
performed.
3: The deceleration time is too
short.
4: The input voltage is too low.
5: A sudden load is added during
deceleration.
6: The braking unit and braking
resistor are not installed.
1: Eliminate external faults.
2: Perform the motor autotuning.
3: Increase the deceleration time.
4: Adjust the voltage to the normal range.
5: Remove the added load.
6: Install the braking unit and braking
resistor.
Err04
Overcurrent
at constant
speed
1: The output circuit is grounded
or short circuited.
2: Motor auto-tuning is not
performed.
3: The input voltage is too low.
4: A sudden load is added during
operation.
5: The AC drive model is of too
small power class.
1: Eliminate external faults.
2: Perform the motor autotuning.
3: Adjust the voltage to the normal range.
4: Remove the added load.
5: Select an AC drive of higher power
class.
Err05
Overvoltage
during
acceleration
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: Remove the external force or install a
braking resistor.
3: Increase the acceleration time.
4: Install the braking unit and braking
resistor.
Err06
Err07
Err08
Overvoltage
during
deceleration
Overvoltage
at constant
speed
Control
power supply
fault
1: The input voltage is too high.
2: An external force drives the
motor during deceleration.
3: The deceleration time is too
short.
4: The braking unit and braking
resistor are not installed.
1: The input voltage is too high.
2: An external force drives the
motor during running.
1: The input voltage is not
within the allowable range.
1: Adjust the voltage to normal range.
2: Remove the external force or install a
braking resistor.
3: Increase the deceleration time.
4: Install the braking unit and braking
resistor.
1: Adjust the voltage to the normal range.
2: Remove the external force or install
the braking resistor.
1: Adjust the input voltage to the
allowable range.
Err09
Undervoltage
1: Instantaneous power failure
occurs on the input power supply.
2: The AC drive's input voltage
is not within the allowable range.
3: The DC-Bus voltage is abnormal.
4: The rectifier bridge and
buffer resistor are faulty.
5: The drive board is faulty.
6: The main control board is
faulty.
1: Reset the fault.
2: Adjust the voltage to the normal range.
3: Contact technical support.
4: Contact technical support.
5: Contact technical support.
6: Contact technical support.
Err10
AC drive
overload
1: Reduce the load and check the motor
and mechanical condition.
2: Select an AC drive of higher power
class.
1: The load is too heavy or
locked rotor occurs on the motor.
2: The AC drive model is of too
small power class.
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