Delta VP3000 Series - Page 515

Chapter 8 Troubleshooting｜VP3000
506
ID No.
Fault Name
Descriptions
16
IGBT overheating
(oH1)
IGBT temperature exceeds the protection level
Action and Reset
Action Condition
When Pr.H4-00 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 1 second, oH1 error
occurs.
Fault Treatment Parameter
No
Reset Method
Manual reset
Reset Condition
Resets only when IGBT temperature is lower than the oH1 error level
Record
Yes
Cause
Corrective Actions
Check if the ambient temperature
or temperature inside the cabinet
is too high, or if there is
obstruction in the ventilation hole
of the control cabinet.
Check the ambient temperature.
Regularly inspect the ventilation hole of the control cabinet.
Change the installed place if there are heating objects, such as braking resistors,
in the surroundings.
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
corresponded loading.
1. Reduce the load.
2. Decrease the carrier.
3. Replace the drive with a larger capacity model.
The drive has run 100% or more
of the rated output for a long time
Replace the drive with a larger capacity model.