Precautions For Using Linear Servo Motors - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

4. HOW TO USE THE POINT TABLE

4.4.15 Precautions for using linear servo motors

(1) Incremental linear encoder
CAUTION
(a) When the linear encoder home position (reference mark) exists in the home position return direction
When an incremental linear encoder is used, the home position is the position per 1048576 pulses
(changeable with the third digit of [Pr. PL01]) with reference to the linear encoder home position
(reference mark) passed through first after a home position return start. Change the setting value of
[Pr. PL01] according to the linear encoder resolution.
POINT
The incremental linear encoder and the absolute position linear encoder have
different reference home positions at the home position return.
If the resolution or the stop interval (the third digit of [Pr. PL01]) of the linear
encoder is large, it is very dangerous since the linear servo motor may crash into
the stroke end.
[Pr. PL01]
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Stop interval setting at the home position return
Setting
Stop interval [pulse]
value
0 8192
1 131072
2 262144
3 1048576 (initial value)
4 4194304
5 16777216
6 67108864
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