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10 USING A DIRECT DRIVE MOTOR
10.3 Startup [A]
• Direct drive motor movement (when LSP or LSN is off)
When LSP or LSN is off at servo-on, the magnetic pole detection is carried out as follows.
■
For absolute position detection system
The magnetic pole detection is required in the following cases.
• When the system is set up (at initial startup of equipment)
• When the Z-phase pulse of the direct drive motor manufactured by Mitsubishi Electric 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. 025 Absolute position erased] has occurred
Turn on the Z-phase pulse of the direct drive motor manufactured by Mitsubishi Electric in the JOG operation from the
controller after the magnetic pole detection.
1.
Execute the magnetic pole detection. Refer to the following.
Page 276 Operation at magnetic pole detection
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).
To omit magnetic pole detection at each power-on, after magnetic pole detection, turn on the Z-phase pulse of the direct drive
motor in the JOG operation and set [Pr. PL01.0] to "0" (Magnetic pole detection disabled).
Servo parameter
Description
PL01.0
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)
LSP
LSN
Center of the direct drive motor rotation part
Servo-on position
After the motor moves to the position where LSP or
LSN is set, the magnetic pole detection starts.
Magnetic pole
detection start
position
Magnetic pole detection completion position
10 degrees or less
Содержание MR-J5 Series
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