GK600 User Manual Chapter 7 Troubleshooting
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Fault
code
Fault
display
Fault description
Causes
Solutions
3
oC3
Decel
overcurrent
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Check motor connection
and output ground
impedance
Load inertia is too big Use dynamic brake
Decel time is too short
Prolong the Decel time
Input voltage is too low Check power grid voltage
4
ov1
Accel
overvoltage
Load inertia is too big
Use dynamic brake
Abnormal input volt
Check power grid voltage
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Check motor connection
and output ground
impedance
5
ov2
Constant-spee
d overvoltage
Load variation is too
big
Check the load
Abnormal input
voltage
Check power grid voltage
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Check motor connection
and output ground
impedance
Improper parameter
setting of regulator
under SVC control
Properly set regulator
parameters
6
ov3
Decel
overvoltage
Load inertia is too big
Use dynamic braking
Abnormal input
voltage
Check power grid voltage
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Check motor connection
and output ground
impedance
Improper parameter
setting of regulator
under SVC control
Properly set regulator
parameters
Decel time is too short
Prolong the Decel time
7
FAL
Module
Overvoltage or
Refer to the solutions of