Chapter 14 Fault CodesMS300
563
IGBT temperature exceeds the protection level.
Depending on the model power, refer to Table 1 below.
When the setting for Pr.06-15 is higher than the oH1 level, oH1 error occurs
instead of oH1 warning. An IGBT overheating error occurs, and the drive stops.
Fault Treatment Parameter
Reset only when IGBT temperature is lower than oH1 error level minus (-) 10°C
Check if the ambient temperature
or temperature inside the control
cabinet is too high, or if there is
obstruction in the ventilation hole
of the control cabinet.
1. Check ambient temperature.
2. Regularly inspect the ventilation hole of the control cabinet.
3. Change the installed place if there are heating objects, such as brake
resistors, in the surroundings.
4. Install/ add cooling fan or air conditioner to lower the temperature inside the
cabinet.
Check if there is any obstruction
on the heat sink or if the fan is
running.
Remove the obstruction or replace the cooling fan.
Insufficient ventilation space
Increase ventilation space of the drive.
Check if the drive matches the
corresponding load
1. Reduce the load
2. Reduce the carrier wave
3. Replace the drive with a larger capacity model.
The drive has run 100% or more
than 100% of the rated output for a
long time
Replace the drive with a larger capacity model.
oH Warning
oH1 Warning = Pr.06-15 (ºC )
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