Chapter 7 Troubleshooting
GK600E User Manual
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Chapter 7 Troubleshooting
7.1 Fault Causes and Troubleshooting
Once drive fault occurs, please identify the causes of fault carefully and make a detailed record
of fault symptom. To seek services, please contact the dealer. Parameters U1-00, U1-09 and
U1-18 are used to view the records of fault 1, fault 2 and fault 3. Faults are recorded w ith
numeric codes (1~46), w hile the fault information that corresponds to each numeric fault code
is specified in the table below .
Table of Fault Codes
Fault
code
Fault
display
Fault description
Causes
Solutions
1
oC1
Accel
overcurrent
Torque boost is too big
under V/f control
Reduce torque boost
value
Start frequency is too
high
Drop start frequency
Accel time is too short
Prolong the Accel time
Motor parameters are
improperly set
Set the parameters
correctly according to
motor nameplate
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Check motor connection
and output ground
impedance
Overload is too heavy
Reduce the load
Inappropriate V/f curve
under V/f control
Set V/f curve correctly
Restart the rotating
motor
Reduce current limited
value or flying start
2
oC2
Canst-speed
overcurrent
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Check motor connection
and output ground
impedance
Overload is too heavy
Reduce the load
Pow er rating of the
drive is relatively small
Select appropriate drive
pow er rating
Input voltage is too low
Check pow er grid voltage
