SV800/SV800A User Manual 8 Fault and maintenance
209
Inverter current feedback circuit abnormal
Check the abnormal causes or replace the control board
LCD keyboard
display
LED keyboard
display
Fault Name
Communication
code
tUnEr
tUnEr
Motor self-learning fault
17
Possible causes
Countermeasures
Self-learning fault during operation
Power on again to reset the fault
Data collection error during self-learning
Check if the motor nameplate parameters are set correctly
Check if the inverter voltage detection is correct or replace
the control board when cannot confirm.
Check if the inverter current detection is correct or replace
the control board when cannot confirm.
Parameter calculation abnormal during
self-learning
Same as above.
LCD keyboard
display
LED keyboard
display
Fault Name
Communication
code
oS
o5
Over-speed fault
18
Possible causes
Countermeasures
Over-speed setting not correct
Correct setting parameters (
P0-01~P0-02
)
Improper setting of speed control gain and
causes excessive overshoot
Adjust the speed control gain (
d0-00~d0-05
)
Load torque is less than torque command in
torque control mode
Correct set torque command
Speed detection interference causes
malfunction
Check speed sensor wiring
Improper setting of speed sensor parameters
Reset speed sensor parameters
LCD keyboard
display
LED keyboard
display
Fault Name
Communication
code
SC
SC
Speed control error
19
Possible causes
Countermeasures
Improper detection amplitude setting
Correct set speed detection amplitude (
p0-07 ~ p0-09
)
Load too heavy and the torque limit reached
Decrease load
Acc./Dec. time too short and torque limit
reached
Increase Acc./Dec. time
Speed sensor abnormal
Make sure the speed sensor works correctly
Speed sensor wiring abnormal
Make sure the speed sensor is connected correctly
Summary of Contents for SV800 Series
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