Delta ASDA-A3 Series User Manual page 771

Troubleshooting
AL060 Absolute position is lost
Checking method
13
and corrective action
How to clear the
alarm?
AL061 Encoder undervoltage
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL062 Number of turns for the absolute encoder overflows
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL067 Encoder temperature warning
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
13-26
Connect or correct the wiring so that the battery power is supplied to the
4.
encoder and then re-establish the absolute origin coordinates.
(a) Check the encoder wiring.
(b) Check the connection between the battery box and servo drive.
Connect or correct the wiring so that the battery power is supplied to the encoder
and then re-establish the absolute origin coordinates. Refer to Chapter 10 for more
information on the absolute servo system.
Condition: voltage level of the absolute encoder battery is lower than the allowable
value (3.1V).
Cause: voltage level of the battery is too low
Check the panel to see if the battery voltage is below 3.1V.
1.
Measure the battery voltage to see if it is below 3.1V.
2.
If the voltage is too low, replace the battery when the main power is on.
The alarm is cleared automatically.
Condition: the number of turns for the absolute encoder exceeds the range:
-32768 to +32767.
Cause: motor's rotation cycle exceeds the allowable range.
Check if the motor's number of turns while operating is within the range between
-32768 and +32767. If not, re-establish the absolute origin coordinates.
Cycle power on the servo drive.
Condition: the encoder temperature is over 85˚C (warning level), but still under
100˚C, which is within the protective range.
Cause: encoder temperature warning (85˚C - 100˚C).
Set P0.002 to -124 d and check if the encoder temperature is identical to the motor
temperature. If the encoder temperature is too high, improve the heat dissipation to
lower the temperature. If the temperature difference between the encoder and
motor is over 30˚C, send the motor back to the distributor.
Cycle power on the servo drive.
ASDA-A3