Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

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15 USING A DIRECT DRIVE MOTOR
15.3 Operation and functions
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Absolute position detection system
The magnetic pole detection will be required with the following timings.
• When the system is set up (at the first startup of equipment)
• When the Z-phase pulse of the direct drive motor is not turned on at the system setup (When the Z-phase
pulse of the direct drive motor can be turned on manually, the magnetic pole detection is not required.)
• After a direct drive motor is replaced
• When [AL. 25 Absolute position erased] has occurred
Turn on the Z-phase pulse of the direct drive motor in JOG operation from the controller after the magnetic
pole detection.
Perform the magnetic pole detection in the following procedure.
1.
Set [Pr. PL01 Linear servo motor/DD motor function selection 1] to "_ _ _ 1" (Magnetic pole detection at first servo-on).
2.
Execute the magnetic pole detection.
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Page 503 Incremental system
3.
After the completion of the magnetic pole detection, change [Pr. PL01] to "_ _ _ 0" (Magnetic pole detection disabled).
After the magnetic pole detection, by turning on the Z-phase pulse in JOG operation and by disabling the magnetic pole
detection function with [Pr. PL01], the magnetic pole detection after each power-on is not required.
Magnetic pole detection method setting
Set the magnetic pole detection method using the first digit of [Pr. PL08] (Magnetic pole detection method selection).
[Pr. PL01]
Magnetic pole detection at first servo-on (initial value)
1
[Pr. PL01]
Magnetic pole detection disabled
0
[Pr. PL08]
Magnetic pole detection method selection
0: Position detection method
4: Minute position detection method