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Mitsubishi Electric MELSERVO-J5 User Manual page 358

Ac servo system
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■For absolute position linear encoder
The magnetic pole detection is required in the following cases.
• When the system is set up (at initial startup of equipment)
• After a servo amplifier is replaced
• After a linear servo motor (primary-side or secondary-side) is replaced
• After a linear encoder (scale or head) is replaced or remounted
If a gap is generated to the positional relation between the linear encoder and the linear servo motor, perform the magnetic
pole detection again.
1.
Execute the magnetic pole detection.
Page 354 For incremental encoder
2.
After the completion of the magnetic pole detection, change [Pr. PL01.0 Servo motor magnetic pole detection selection]
to "0" (magnetic pole detection disabled).
Servo parameter
PL01.0
When [Pr. PL01.0 Servo motor magnetic pole detection selection] is set to "0" (magnetic pole detection disabled) after the
magnetic pole detection, the magnetic pole detection after each power-on is not required.
10 USING A LINEAR SERVO MOTOR
356
10.2 Startup [G] [WG]
Description
Servo motor magnetic pole detection selection
0: Magnetic pole detection disabled
1: Magnetic pole detection at initial servo-on after cycling the power
5: Magnetic pole detection at every servo-on
Initial value: 1 (magnetic pole detection at initial servo-on after cycling the power)

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