MCAC-PDSM-2013-04 Midea Precision AC Technical Manual-Down Delivery Series
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the inverter output to stop the motor and make it stay free running condition. If there is alarm, the
inverter will display alarm code, and will not cut off the inverter output during alarm state, the
motor still be controlled by the inverter.
Many methods of inverter error reset: Press the
Reset
button in keypad of inverter, reset function
of terminals, or if necessary, power off the main power for a while then can reset the error. If error
has been solved, the inverter will recover to normal operation. If error still not has been solved,
the inverter will trip out again.
The alarm reset of inverter only effect by operate the
Esc
button in keypad of inverter.
When no display after power on:
1. Use the multimeter to check whether input power of inverter is same as the rated voltage.
2. Check whether the
Charge
lamp whether lights up.
3. If the above are normal, then maybe the power switch has error.
When the inverter does not run after the motor operation:
Cut off the connecting wire between inverter and motor, operate the inverter in 50Hz, and use
multimeter to check whether there is equivalent AC between U, V and W. Use simulate voltage
meter for measurement (the range is AC500V). If there is not equivalent voltage or no voltage,
then the inverter had been damaged.
Notes:
Between U, V and W are high –frequency impulse.
Code Type
Error
reason
Solutions
E001
Over current error, current is
higher than 150% of
Maximum current.
Speed up and down times too
short.
Extend the speed up and down time.
The inverter power is too small
Select a large power inverter.
Voltage is too low.
Check the input voltage.
E002
Power module error
Speed up and down time is too
short.
Extend the speed up and down time.
The inverter output side is short
circuit.
Check the insulation of motor.
Power module is damaged
Replace the module.
Outer disturb.
Find out disturb and
eliminate it.
E003
Bus overvoltage error, the
value is more than 570V.
Speed down time is too short,
regenerated energy too large.
Extend the speed down time.
Voltage is too high.
Check the input voltage.
Load inertia is too large,
regenerated energy too large.
Select a large power inverter.
E004
Bus voltage error, the value
is less than 171V.
Voltage of power supply is too low.
Check the input voltage.
E005
Motor load error, the motor
current is higher than
standard inverter current.
Voltage is too low.
Check the input voltage.
Load inertia is too large.
Check the load inertia, adjust torque
lifting capacity.
Not correct standard current setting
of motor.
Reset the standard current of motor.
