Mitsubishi Electric MELSERVO MR-J3 A Series, Instruction Manual

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14. ABSOLUTE POSITION DETECTION SYSTEM
(c) To detect the ABS time-out warning (AL.E5) at the servo amplifier, the time required for the ABS request
signal to go OFF after it has been turned ON (ABS request time) is checked. If the ABS request remains
ON for longer than 1s, it is regarded that an fault relating to the ABS request signal or the ABS
transmission data ready (ABST) has occurred, and the ABS communication error is generated.
The ABS communication error occurs if the ABS time-out warning (AL.E5) is generated at the servo
amplifier due to an ABS request OFF time time-out.
OFF
ON
OFF
ON
OFF
ON
1s
ABS transfer mode
ABS request
ABS transmission
data ready
ABS communication
error
The signal does
not go OFF
NO
YES
14.9.2 Error resetting conditions
Always remove the cause of the error before resetting the error.
Output coil
Name
A1SD75 1PG
Servo status Resetting condition
ABS communication error Y39 Y11 Ready (RD) off Reset when servo-on (SON) PB
(X26) signal turns off.
For A1SD75
Reset when servo-on (SON) PB
(X26) signal turns from off to on.
ABS checksum error Y3A Y12 Ready (RD) on
For FX-1PG
Reset when servo-on (SON) PB
(X26) signal turns off.
Servo alarm Y38 Y10 Ready (RD) on Reset when alarm reset PB turns on
or power switches from off to on.