Chapter 8 Troubleshooting and Countermeasures
-84-
Inverter Overload
Motor overload
If the motor protection parameter
F9-01 is set properly
Set this parameter properly
If the load is too heavy or motor does not rotate
Reduce the load and check
the motor and machinery
The inverter model is small
No
No
Yes
Yes
Fig.8-10 Inverter/Motor Overload ˄ERR10/ERR11˅
Phase loss at the input side
Check if three-phase input
power supply is normal
Check and resolve the problems
in the external lines to ensure
that the three-phase power input
to the inverter is normal
Check if the drive board is normal
Replace the drive board
If the main control board is normal
Replace the main control board
Ask for technical support
No
No
No
Yes
Yes
Fig.8-11 Phase Loss at Input Side˄ERR12˅
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