— 14-8 —
14.2.3.2. Software Thermal Sensor
[Output]
DRDY: Open
[TA]
A3 > Overload
[LED]
A3
[Motor Condition]
Servo-OFF
Table 14-8: Cause and Remedy: Overload
Cause
Remedy
(1) Excessive Motor duty cycle.
·
Reduce duty cycle and the load. Re-adjust
acceleration/deceleration.
·
The Motor is overheated and air-cooling is necessary
after the Motor stops. Then turn on power.
(After stopping operation, keep control power on.)
(2) Mechanical restraint to the Motor such
as brake or an obstacle.
·
Remove mechanical restraint.
(3) Improper gain setting.
·
Readjust gain.
(Refer to “8. Trial Running and Adjustment”.)
(4) Unmatched combination of Motor and
Driver Unit.
·
Check the combination.
(Reference number of Motor and Driver Unit.)
Note: Do not change a parameter “CL” setting. It is properly set before shipment.
14.2.3.3. Velocity Error Over
[Output]
DRDY: Open
[TA]
A4> Run away
[LED]
A4
[Motor Condition]
Servo-OFF
Table 14-9: Cause and Remedy: Run away
Cause
Remedy
(1) Velocity of Motor has reached to the
limit due to external disturbance.
·
Clear the alarm.
(2) Velocity of Motor has reached to the
limit due to overshooting.
·
Reduce setting of acceleration rate.
·
Reduce rotational speed.
(3) Motor tends to vibrate due to poor servo
tuning.
·
Tune Motor properly.
(4) Motor runs away.
(out-of-control)
·
Confirm PA data (parameter) for abnormality.
·
Replace Driver Unit.
(Refer to “Appendix 4. How to Replace ESA 13 Driver
Unit.”)
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