GTAKE GK600E-4T11B, User Manual

Page: 115 / 127

Chapter 7 Troubleshooting GK600E User Manual
- 110 -
Fault
code
Fault
display
Fault description Causes Solutions
protection overcurrent overvoltage or overcurrent
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Check motor connection
and output ground
impedance
Loose connection of
control board Pull out and reinsert the
cables of control board
Direct connection of
inverter module
Seek services
Control board
abnormal
Seek services
Sw itching pow er
supply failed
Seek services
8 tUN
Autotuning
failed
Bad motor connection Check motor connection
Autotuning during
rotation of the motor Autotuning in stationary
status of the motor
Big error betw een real
motor parameters and
the setting Set the parameters
correctly according to
motor nameplate
9 oL1
Drive
overloaded
Torque boost is too big
under V/f control Reduce torque boost
value
Start FREQ is too high Drop start frequency
Accel/Decel time is too
short Prolong the Accel/Decel
time
Motor parameters are
improperly set
Set the parameters
correctly according to
motor nameplate
Output short circuit
(phase-to-phase short
circuit and output
ground short circuit)
Check motor connection
and output ground
impedance
Load is too heavy Reduce the load
Inappropriate V/f curve
under V/f control
Set V/f curve correctly
Restart the rotary
motor Reduce current limited
value or flying start