Delta VP3000 Series - Page 414

Chapter 8 Troubleshooting｜VP3000
405
ID No.
Warning Name
Descriptions
10
Capacitor overheating
warning
(oH2)
The drive has detected the capacitors are overheat and the temperature exceeds
the warning protection level
Action and Reset
Action Condition
oH2 error level minus (–) 5°C
Action Time
The oH2 warning occurs when the temperature sensor of capacitor detects the
temperature is higher than oH2 warning level
Warning Setting Parameter
N/A
Reset Method
Auto-reset
Reset Condition
The drive auto-resets when the capacitor temperature is lower than oH2 warning
level minus (–) 10°C
Record
No
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.
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
corresponded loading.
1. Decrease loading.
2. Decrease the carrier.
3. Replace with a drive with larger capacity.
The drive has run 100% or more of
the rated output for a long time
Replace with a drive with larger capacity.
Unstable power
Install reactor(s).
The load changes frequently
Reduce the changes of the load.