Motor overload
E
E
.
.
O
O
L
L
1
2
Whether the motor overload protection
parameter F8.03 is set properly
Whether the load is too heavy or
the motor does not rotate
Yes
Set it properly
Reduce the load and
check the motor and
the machine
No
Yes
The inverter
model is small
Inverter overload
No
No
No
No
Whether the voltage of power net is too low
Adjust the input
voltage within the
allowable range
Yes
Yes
Yes
Phase loss at the output side
E.LF
Check the cable connecting the
inverter to the motor is normal
Whether
Yes
Yes
No
Check the drive board is normalWhether
Check the module is normalWhether
Check the main control
board is normal
Whether
Replace the main
control board
Replace the
drive board
Replace the
module
Perform troubleshooting
Check if the three-phase
winding of the motor is
normal and remove the fault
No
No
No
No
Yes
Yes
Ask for technical support
Check the three-phase output
of the running inverter without motor
is balanced
Whether
84
Whether the deceleration time is too short
Prolong the
deceleration time
Whether the manual boost torque or
V/F curve is proper
Adjust the manual boost
torque or V/F curve
Chapter 8 Troubleshooting and Countermeasures