Mitsubishi Electric Melservo MR-J3-A Instruction Manual page 441

14. ABSOLUTE POSITION DETECTION SYSTEM
(2) ABS communication error
(a) The OFF period of the ABS transmission data ready signal output from the servo amplifier is checked.
If the OFF period is 1s or longer, this is regarded as a transfer fault 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 ON time time-out.
ABS transfer mode
ABS request
ABS transmission
data ready
ABS communication
error
(b) The time required for the ABS transfer mode signal to go OFF after it has been turned ON (ABS transfer
time) is checked.
If the ABS transfer time is longer than 5s, this is communication error occurs if the ABS time-out warning
(AL.E5) is generated at the servo amplifier due to an ABS transfer mode completion time time-out.
ABS transfer mode
ABS request
ABS transmission
data ready
ABS communication
error
ON
OFF
ON
OFF
ON
OFF
YES
NO
ON
OFF
1
ON
OFF
ON
1
OFF
YES
NO
1s
The signal does not come ON
5s
The signal does not go OFF
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2 3 4
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