Delta ME300 Series - Page 411

Chapter 14 Fault Codes and Descriptions
ME300
14-16
No. Display on LED Keypad Fault Name Fault Descriptions
16
IGBT overheating
(oH1)
IGBT temperature exceeds the protection level.
(Refer to Pr.06-15)
Action and Reset
Action condition
When Pr.06-15 is higher than the IGBT overheating protection level, oH1 error
occurs instead of oH1 warning.
Action time
IGBT temperature exceeds the protection level for more than 100
ms, oH1 error
occurs.
Fault treatment parameter N/A
Reset method Manual reset
Reset condition Reset only when IGBT temperature is lower than oH1 error level minus (-) 10°C.
Record Yes
Cause Corrective Actions
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 the ambient temperature.
2. Regularly inspect the ventilation hole of the control cabinet.
3. Change the installed place if there are heating objects, such as braking
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.
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