User manual

ASDA-A User Manual Chapter 10 Troubleshooting
© DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 4th Edition 2005/11/30, HE03
10-3
: Motor overheated
Potential Cause Checking Method Corrective Actions
Servo system is
overloaded.
1. Use thermometer to check the motor
temperature.
2. Check if servo system is overloaded.
Estimate the capacity of motor and
drive again.
: Regeneration error
Potential Cause Checking Method Corrective Actions
Regenerative resistor is
not connected.
Check the wiring connection of
regenerative resistor.
Reconnect regenerative resistor.
Regenerative switch
transistor fault
Check if regenerative switch transistor is
short-circuited.
Return to the distributor or
manufacturer.
Parameter setting error Confirm the parameter setting and
specifications of regenerative resistor.
Correctly reset again.
: Overload
Potential Cause Checking Method Corrective Actions
The drive has exceeded
its rated load during
continuous operation.
Check if the drive is overloaded. Increase motor capacity or reduce
load.
Check if mechanical system is vibrating. Adjust gain value of control circuit. Control system
parameter setting is
defective.
Accel/decel setting time is too fast. Decrease accel/decel setting time.
The wiring of motor and
position detector is error.
Check the wiring of U, V, W and position
detector.
Make sure to wire correctly.
: Overspeed
Potential Cause Checking Method Corrective Actions
Speed input command is
not stable (not fluctuate
too much).
Use signal detector to detect if input
signal is abnormal.
1. Ensure that input command
frequency is stable (not fluctuate too
much)
2. Activate filter function.
Over-speed parameter
setting is defective.
Check if over-speed parameter setting
value is too small.
Correctly set over-speed parameter
setting again.