Chapter 6 Troubleshooting
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Chapter 6 Troubleshooting
6.1 Troubleshooting
When the driver has detected a fault, the keypad will display the fault code, and the
driver will stop PWM output and come into fault protection state. In the fault indicator
TRIP will flicker, the fault relay has output and the motor will coast to stop. At this
time, you should find the reason of fault and apply corrective actions. If the listed
troubleshooting cannot solve the problem, please contact our company directly. After
debugging, you can press “STOP/RESET” or reset external terminals to restart the
driver. Notes: the driver can’t startup even through debugging has been finished if
operating signal isn’t removed. You should cut operating signal first and then close
again or remove main circuit power supply once to make the fault reset. If the SC fault
appeared, the reset is only permitted after 10 seconds. If you want to see the work
condition (such as output frequency, reference frequency, output current, bus voltage.,
etc) or contents of the latest three faults, please press “PRG/ESC ” to enter program
state and then turn the knob to see parameter value of function code PE.00~PE.08.
Table 6-1 Troubleshooting
Fault
Display
Name of Protection
Possible Cause to Fault
Countermeasure
Uu1 Busbar
under-voltage
The input voltage is
abnormal
Check the voltage of
power supply
Check and test the
electrical level setting
Uu2
The control circuit is
poor
The control circuit
under-voltage
Uu3
The charging circuit
is poor
The contactor doesn’t
pull in.
Check the charging
circuit
OC1
Overcurrent during
the acceleration
The acceleration time
is too short
The V/F curve is not
appropriate
The power voltage is
low
The driver power is
too small
The driver output load
is short-circuited.
Increase the
acceleration time
Adjust the V/F curve
setting and have the
appropriate torque
boost setting
Check the input power
supply
Select the driver with
the larger power
Check the motor coil
resistance and the
motor insulation
Summary of Contents for AS600M Series
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