Delta ASDA-A3 Series User Manual page 1180

ASDA-A3
AL056 Excessive motor speed
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL057 Feedback pulse is lost
Trigger condition
and cause
Checking method
and corrective action
Condition: when the filtered motor speed exceeds the setting of P1.111, the servo
drive immediately switches to the Servo Off state and displays this alarm.
Cause: this alarm is to remind the user that the motor speed has reached the
upper limit of the current setting (P1.111).
Check the reason for the high motor speed, such as the set value of P1.111 is
1.
too small, the bandwidth is not set properly, or the linear motor parameter
setting does not match the linear motor specification.
Evaluate the motor speed and the condition of the mechanical parts.
2.
If allowable, increase the speed and the set value of P1.111.
DI.ARST
Condition: when P2.081 is set to 1, the servo drive will detect if there is pulse
leakage. When the pulse leakage exceeds the set value of P2.082, this alarm is
triggered.
Cause:
Pulse leakage occurs during motor operation.
1.
The pulse signal is interfered by noise.
2.
Check if pulse leakage has occurred to the motor encoder feedback due to
1.
noise interference.
If there is interference, check the following items:
2.
(a) Check if the motor is properly grounded. Make sure the ground end
(green) of the power cable is grounded to the servo drive heat sink.
(b) Use shielded cable for the feedback signal cable. Make sure the signal
cable is separated from the power supply or any high-current cables to
avoid interference.
If the encoder feedback type is a square-wave digital signal, check if the motor
3.
speed is too fast and exceeds the maximum limit of 16 MHz that the hardware
can receive (the limit is 4 times the frequency).
In addition to eliminating the noise interference, if the encoder type is a
4.
square-wave digital signal, you can also filter the noise by setting the
applicable filter functions. When the main encoder signal source is CN2
(PM.003.U = 0), set PM.003.Z. When the main encoder signal source is CN5
(PM.003.U = 1), set P1.074.U.
Set the maximum speed limit of the motor with P1.055.
5.
Check if P2.083 is set correctly.
6.
Troubleshooting
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