Delta ASDA-A3 Series User Manual page 1197

Troubleshooting
AL08B Auto-tuning function - dwell time is too short
14
Checking method
and corrective action
How to clear the
alarm?
AL08C Auto-tuning function - inertia estimation error
Trigger condition
and cause
Checking method
and corrective
action
How to clear the
alarm?
AL095 Regenerative resistor is disconnected
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
14-50
For a reciprocating motion between two points, a dwell is required on the
1.
return, which has to be longer than 1 second. Furthermore, the duration of a
single command cannot exceed 20 seconds.
For rotation in a single direction, dwell time is required when the motor rotates
2.
a certain number of cycles (> 2 cycles).
DI.ARST
Condition: inertia estimation error occurs when the servo drive starts the
auto-tuning procedure.
Cause:
Rotation speed is too slow.
1.
Acceleration or deceleration time is too long.
2.
Load inertia of the machine is too large.
3.
Inertia variation of the machine is too drastic.
4.
The lowest speed should be no less than 200 rpm. It is suggtested that you
1.
set the speed to 500 rpm or higher.
The time for the motor to accelerate from 0 rpm to 3,000 rpm or decelerate
2.
from 3,000 rpm to 0 rpm must be within 1.5 seconds.
The load inertia should be less than 50 times the motor inertia.
3.
Avoid applications that require drastic variation in the inertia.
4.
DI.ARST
The value of P1.053 (Regenerative resistor capacity) is not 0 and the external
regenerative resistor or the brake wiring is in error.
If the servo braking requires the regenerative resistor, correctly connect the
1.
external regenerative resistor. Once you connect the resistor, make sure that
the value of P1.053 is correct.
If not using the regenerative resistor, set P1.053 (Regenerative resistor capacity)
2.
to 0.
If the issue persists, send your servo drive back to the distributor or contact Delta.
DI.ARST
ASDA-A3