540876_A_PUB_DATE_1_FEB_2012.DOC PROGRAMMING MANUAL 95
TROUBLESHOOTING
Err N° Failure Failure Name Explanation
351 Err EP* Encoder phase
error
Rotation command different than the motor rotation
direction
352 Err E.11* Opposite rotation
deceleration
Rotation direction of the speed command different than the
estimated speed causing overload
353 Err E.13 Internal circuit error Problem with an internal circuit, replace the inverter
* : This option or function is not used. If you have this error anyway do the following :
1) Reload the inverter parameters.
2) If the fault is persistent, replace the inverter.
DIAGNOSE FAILURE 300-301-302: OC-ERRORS (OVERCURRENT)
1. Check if there is no short circuit on the
output of the inverter. (loose wire of motor
cable, motor windings, screws or other loose
parts inside the motor terminal box,…)
Repair the short circuit.
2. Disconnect the motor cable from the inverter and
try again.
If you still have the error with motor cable
disconnected, replace the inverter.
DIAGNOSE FAILURE 303-304-305 : OV-ERRORS (OVERVOLTAGE)
If the DC-voltage on the capacitors is too high, the inverter will generate OV error.
1. Check if there was a high unbalance during
extraction, which can be caused by putting
only half loads in the machine.
Put always a full load in the machine drum.
2. Check if the supply voltage is not too high. Reduce the supply voltage.
3. Check if the fault is persistent If the fault is persistent, contact the manufacturer
DIAGNOSE FAILURE 306: THT-ERROR (INVERTER OVERLOAD)
If the output current of the inverter is abnormal high for some time, the inverter will go into THT-alarm
state.
1. Check if the power supply is sufficient high
and stable during extraction with load.
Repair the power supply.
2. Check if the drum rotates normally by hand.
(no abnormal high friction)
Repair / clean what is necessary.
3. Check if the motor windings are OK. Replace the motor.
DIAGNOSE FAILURE 307: THM-ERROR (MOTOR OVERLOAD)
If the motor current is higher than allowed for a longer time, the inverter will activate the electronic
overcurrent protection to prevent the motor from overheating and the inverter will go into THM-alarm state.
1. Check if the drum rotates normally by hand. Repair / clean what is necessary.
2. Check if the motor windings are OK. Replace the motor.
3. Check if the fault is persistent. If the fault is persistent, contact the manufacturer.
DIAGNOSE FAILURE 309: OLT-ERROR (STALL PREVENTION)
The output frequency has dropped to minimum because of current limitation.
1. Check if the power supply is sufficient high and
stable during extraction with load.
Repair the power supply.
2. Check if the drum rotates normally by hand.
(no abnormal high friction)
Repair / clean what is necessary.
3. Check if the motor windings are OK. Replace the motor.
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