Absolute Position Data Transfer Errors; Corrective Actions - Mitsubishi Electric Melservo MR-J3-A Instruction Manual

14. ABSOLUTE POSITION DETECTION SYSTEM

14.9 Absolute position data transfer errors

14.9.1 Corrective actions

(1) Error list
The number within parentheses in the table indicates the output coil or input contact number of the
A1SD75.
Output coil
Name
AD75 1PG
(Note) Y39 Y11 1. The ABS data transfer mode
ABS
communication
error
ABS data Y3A Y12
check sum
error
Servo alarm Y38 Y10
Note. Refer to (2) of this section for details of error occurrence definitions.
Description
signal (Y41) is not completed
within 5s.
2. The ready to send signal
(X32) is not turned OFF within
1s after the ABS data request
signal (Y42) is turned ON.
3. The ready to send signal
(X32) remains OFF for longer
than 1s.
ABS data sumcheck resulted
in mismatch four times
consecutively.
Alarm occurred in the servo
amplifier.
Cause
1. Wiring for ABS transfer mode
signal, ABS data request
signal, or ready to send signal
is disconnected or connected
to the DOCOM terminal.
2. PC ladder program wrong.
3. Faulty PLC output or input
module.
4. Faulty printed board in the
servo amplifier.
5. Power supply to the servo
amplifier is OFF.
1. Wiring for the ABS data signal
(ABS bit 0 (PF), bit 1 (ZSP)) is
disconnected or connected to
the SG terminal.
2. PC ladder program wrong.
3. Faulty PLC input module.
4. Faulty printed board in the
servo amplifier.
1. Emergency stop (EMG) of the
servo amplifier was turned off.
2. Trouble (ALM) of the servo
amplifier was turned on.
14 - 55
Action
Correct the wiring.
Correct the ladder.
Change the input or output
module.
Change the amplifier
Turn on the power to the servo
amplifier.
Correct the wiring.
Correct the ladder.
Change the input module.
Change the amplifier.
After ensuring safety, turn EMG
on.
Refer to chapter 9 and take
action.