GK600 User Manual Chapter 7 Troubleshooting
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Fault
code
Fault
display
Fault description
Causes
Solutions
10
oL2
Motor
overloaded
Torque boost is too big
under V/f control
Reduce torque boost
value
Inappropriate V/f curve
under V/f control
Set V/f curve correctly
Motor parameters are
improperly set
Set the parameters
correctly according to
motor nameplate
Improper setting of
motor overloaded
protection time
Properly set the motor
overloaded protection time
Motor stalled or sharp
variation of load
Identify the causes of
motor stalling or check the
load condition
Long-time running of
ordinary motor at low
speed with heavy load
Select variable frequency
motor
11
CtC
Current
detection
abnormal
Abnormal connection
between control board
and drive board
Check and re-connection
Abnormal current
detection circuit of
control board
Seek services
Abnormal current
detection circuit of
drive board
Seek services
Current sensor failed
Seek services
SMPS failed
Seek services
12
GdP
Output ground
short-circuit
protection
Output connection
ground short circuit
Check motor connection
and output ground
impedance
Motor insulation
abnormal
Check the motor
Inverter module
abnormal
Seek services
Output ground leakage
current is too big
Seek services
