Chapter 14 Fault Codes and DescriptionsC2000 Plus
ID* Display on LCD Keypad Fault Name Fault Descriptions
17
Over-heat key
components (oH2)
The drive has detected the key components are
heat
Action and Reset
Action condition Refer to the table below for oH2 level of each models
Action time
The oH2 fault occurs when the temperature
sensor of key components detects
the temperature is higher than the protection condition for 1 second.
Fault treatment parameter N/A
Reset method Manual 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 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 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.
Unstable power Install reactor(s)
Load changes frequently Reduce load changes
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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