Chapter 10 Troubleshooting
ASDA-A2R Series
Revision December, 2014
10-13
Bad connection of the
encoder
Check if the connection between
CN2 of the drive and the encoder
of the servo motor is loose
Reconnect the wiring
The encoder is
damaged
Check if the motor is damaged
Change the motor
：
Adjustment Error
Causes
Checking Method
Corrective Actions
The analog input
contact is incorrectly
set back to zero
Measure if the voltage of the
analog input contact is the same
as the ground voltage
Correctly ground the analog
input contact
The detection device is
damaged
Reset the power supply
If the error still occurs after reset,
send the drive back to the
distributors or contact with Delta.
：
Emergency Stop
Causes
Checking Method
Corrective Actions
Press the emergency
stop button
Check if the emergency stop
button is enabled.
Activate emergency stop
：
Reverse Limit Error
Causes
Checking Method
Corrective Actions
Reverse limit switch is
activated.
Check if the limit switch is
enabled.
Enable the reverse limit switch
The servo system is
unstable.
Check the control parameter and
inertia ratio
Re-adjust the parameter or
evaluate the motor capacity.
：
Forward Limit Error
Causes
Checking Method
Corrective Actions
Forward limit switch is
activated.
Check if the limit switch is
enabled.
Enable the forward limit switch
The servo system is
unstable.
Check the control parameter and
inertia ratio
Re-adjust the parameter or
evaluate the motor capacity.