Inovance MD210 Series - Common Symptoms and Diagnostics

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4.2 Common Symptoms And Diagnostics
Fault Name
Possible Causes
Solutions
There is no display at
power-on.
1. There is no power supply or the power supply is
too low.
2. The switching power supply on drive board is
faulty.
3. The rectifier bridge is damaged.
4. The buffer resistor of drive is damaged.
5. The control board or the keypad is faulty.
6. The cable between control board and drive board
or keypad breaks.
1. Check the power supply.
2 to 5. Seek for maintenance.
6. Re-connect the 4-core and 28-core flat cables, or
seek for maintenance.
“HC” is displayed at
power-on.
1. The cable between drive board and control board
is in poor contact.
2. The control board is damaged.
3. The motor winding or the motor cable is short
circuited to the ground.
4. The power supply is too low.
1. Re-connect the 4-core and 28-core flat cables, or
seek for maintenance.
2. Seek for maintenance.
3. Check the motor or replace it, and check the motor
cable.
4. Check the power supply according to charpter1.3.
The display is normal upon
power-on. But “HC” is
displayed after getting
started while the motor
stops immediately.
1. The cooling fan is damaged or the rotor is locked.
2. Some terminal is short circuited.
1. Replace cooling fan, or check the machine whether
it is locking the rotor.
2. Eliminate short circuit.
Err14 is reported
frequently.
1. The setting value of carrier frequency is too high.
2. The cooling fan is damaged, or the air filter
is blocked.
3. Components inside the drive are damaged
(thermal coupler or others).
1. Reduce F0-15.
2. Replace the fan and clean the air filter.
3. Seek for maintenance.
The motor does not rotate
after the AC drive outputs
nonzero reference.
1. Motor or motor cable is damaged.
2. The parameters are set improperly (motor
parameters).
3. The cable between drive board and control board
is in poor contact.
4. The drive board is faulty.
5. The rotor is locked.
1. Check motor, or check the cable between drive and
motor.
2. Check and re-set motor parameters.
3. Re-connect the 4-core and 28-core flat cables, or
seek for maintenance.
4. Seek for maintenance.
5. Check the machine whether it is locking the rotor.
The DI terminals are
disabled.
1. The DI parameters are set incorrectly.
2. The input signal is incorrect.
3. The wire jumper between OP and +24 V
is in poor
contact.
4. The control board is faulty.
1. Check and reset DI parameters in group F4.
2. Check the input signals, or check the input cable.
3. Check the jumper between OP and +24 V.
4. Seek for maintenance.
The drive reports
overcurrent and
overvoltage frequently.
1. The motor parameters are set improperly.
2. The acceleration/deceleration time is too small.
3. The load fluctuates.
1. Reset motor parameters.
2. Set proper acceleration/deceleration time.
3. Check the machine, or seek for support.
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