Causes And Corrective Actions - Delta ASDA-A3 Series User Manual

Troubleshooting

14.2 Causes and corrective actions

AL001 Overcurrent
14
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL002 Overvoltage
Trigger condition
and cause
Checking method
and corrective action
14-10
Condition: main circuit current is greater than 1.5 times the maximum instantaneous
current of the servo drive.
Cause:
The servo drive output is short-circuited.
1.
Motor wiring is in error.
2.
IGBT is abnormal.
3.
Check the connection between the motor and servo drive and make sure that
1.
the wire is not short-circuited. Do not expose the metal part of the wiring.
Check if you have followed the wiring sequence for connecting the motor to
the servo drive as described in this manual.
If the temperature of the heat sink is abnormal, send your servo drive back to
2.
the distributor or contact Delta. Check if the set value of the parameter is
much greater than the default. It is recommended that you reset the parameter
to the factory default setting and then modify the setting gradually.
Cycle power on the servo drive.
Condition: main circuit voltage exceeds the rated value.
Cause:
The input voltage of the main circuit is higher than the allowable rated value.
1.
Incorrect power input (incorrect power system).
2.
Malfunction of the servo drive hardware.
3.
Incorrect selection of the regenerative resistor or no connection to an external
4.
regenerative resistor.
Use a voltmeter to check if the input voltage of the main circuit is within the
1.
allowable rated value (refer to Appendix A Specifications) and check if the
power system complies with the specifications. Use the right voltage source or
connect the transformer and regulator in series to have the voltage be within
the specified range.
If the alarm occurs when the input voltage of the main circuit measured by the
2.
voltmeter is within the allowable rated value, send your servo drive back to the
distributor or contact Delta.
Check the connection for the regenerative resistor, re-calculate the value for
3.
the regenerative resistor, and correctly set the values of P1.052 and P1.053.
ASDA-A3