Chapter 13 Warning CodesC2000 Plus
ID No. Display on LCD Keypad Warning Name Description
10
Over-heat key
components (oH2)
The drive has detected the key components are over
heat
Action and Reset
Action condition
oH2 error level minus (–) 5°C
Action time
The oH2 warning occurs when the temperature
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 temperature sensor of key components
the temperature is lower than oH2 error level minus (–) 10°C
Record N/A
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.
oH1/ oH2 warning level
Model oH1 oH2
oH warning
oH1 warning = (Pr.06-15)
110
95
oH1 Warning = oH1 – 5
oH2 Warning = oH2 – 5
80
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