Delta VP3000 Series - Page 516

Chapter 8 Troubleshooting｜VP3000
507
ID No.
Fault Name
Descriptions
17
Capacitor overheating
(oH2)
The drive has detected the capacitors are overheat and the temperature exceeds
Pr. H4-01 warning protection level
Action and Reset
Action Condition
When Pr.H4-01 is higher than the IGBT overheating protection level, oH2 error
occurs instead of oH2 warning.
Action Time
Capacitor temperature exceeds the protection level for more than 1 second, oH2
error occurs.
Fault Treatment Parameter
No
Reset Method
Manual reset
Reset Condition
Resets when the capacitor temperature is lower than the oH2 warning
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.
Unstable power
Install reactor(s).
The load changes frequently
Reduce the changes of the load.