Chapter 13 Warning Codes|MH300
ID No.
Display Warning Name Description
22_2
Motor over-heating
(oH3) PT100
Motor overheating warning.
The AC motor drive detects the temperature insi
the motor is too high.
Action and Reset
Action level Pr.03-00=11 (PT100), PT100 input level > Pr.06-57 (default=7 V)
Action time Immediately act
Warning setting parameter
Error treatment: Pr.06-29
0: Warn and continue operation
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
When Pr.06-29=0 and when the temperature is > Pr.06-
warning automatically clears.
If the temperature is between Pr.06-56 and Pr.06-
outputs according to the operating frequency setting for Pr.06-58.
Reset method
When Pr.06-29=0, oH3 displays as “Warning”.
> Pr.06-56 level, the oH3 warning automatically clears.
Reset condition
When the temperature is > Pr.06-
56 level, the oH3 warning automatically
clears.
Record N/A
Cause Corrective Actions
Motor locked Clear the motor lock status.
The load is too large
Decrease loading.
Replace with a motor with larger capacity.
Ambien temperature is too high
Change the installed place if there are heating devices in the
surroundings.
Install/ add cooling fan or air conditioner to lower the ambient
temperature.
Motor cooling system error Check the cooling system to make it work normally.
Motor fan error Replace the fan.
Operates at low-speed too long
Decrease low-speed operation time.
Change to dedicated motor for the drive.
Increase the motor capacity.
Accel./
cycle is too short
Increase the setting values for Pr.01-12–01-19 (accel./ decel. time).
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