Advanced Control C220 Series - Page 154

Fault Diagnosis and Countermeasures
C220/C420General Flux Vector Control lnverter User Manual
153
ERR04
Check if the output loop of the
inverter is earthed or short circuited
If the motor parameters are identified
If the acceleration time is too short
Acceleration over current
Perform
troubleshooting
Prolong the acceleration time
Y
Y
Identify the motor parameters
Y
N
If the manual boost torque
or V/F curve is proper
Adjust the manual boost
torque or V/F curve
N
If the voltage is too low
Adjust the voltage to normal
range
Y
If the rotating motor is started
Select start upon rotational
velocity follow-up or start
upon motor shutdown
Y
If load is added suddenly
during the acceleration
Remove the additional load
Y
The inverter model
is rather small
N
Vector Control
Fig.7-3 Acceleration over current（Err04）