195 
8.6.8 Overcurrent   
If the it is the inverter 
fault, please contact with 
our company
Set right 
V/F vibration control 
parameters 
Adjust the V/F curve
Check if there is 
abnormal vibration to 
the motor
Decrease the torque 
boost 
Check if the multi-dots 
V/F curve is set rightly
If the it is the inverter 
fault, please contact with 
our company
Check if the torque 
boost is too big 
Set right parameters of 
current loop and speed 
loop
Clear the interference 
source
Check if it is V/F 
control
Adjust the ACC/DEC 
time
Check if there is 
interference source 
Parameters autotune
Check if the ACC/DEC 
time is too short
Set right motor type and 
parameters
Check if it needs 
parameters autotune
Change the motor
Check if the motor is 
short circuited to the 
earth
Settle the short circuit 
problem and configure 
the motor cables rightly
Overcurrent 
Check if the motor type and 
parameters are right 
Check if the parameter of current 
loop and speed loop are right 
Y
e
s
N
o
Y
e
s
N
o
Y
e
s
N
o
Y
e
s
N
o
Y
e
s
N
o
Y
e
s
N
o
Y
e
s
N
o
N
o 
Y
e
s
Y
e
s
N
o
Y
e
s
N
o
Y
e
s 
N
o
Y
e
s
N
o
Reduce the load and 
increase the capacity of 
the inverter 
Check if the load is too 
heavy
Check if UVW is short circuited to 
the earth 
Remove the motor cable and 
ensure if there is connected with the 
earth.