Mitsubishi Electric MR-J4W2 Instruction Manual page 338

15. USING A DIRECT DRIVE MOTOR
2) Direct drive motor movement (when FLS and RLS are on)
3) Direct drive motor movement (when FLS or RLS is off)
When FLS or RLS is off at servo-on, the magnetic pole detection is carried out as follows.
Magnetic pole detection
start position
(b) Absolute position detection system
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).
(Note) RLS
Note. When the stroke limit (FLS or RLS) turns off during the magnetic pole detection, the
magnetic pole detection is carried on to the opposite direction. When FLS and RLS
are off, [AL. 27 Initial magnetic pole detection error] occurs.
RLS
POINT
When the absolute position detection system is used, the magnetic pole
detection is required when the power is turned on with the following timing.
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.
[Pr. PL01]
1
Center of the direct drive motor rotation part
FLS (Note)
Servo-on position (Magnetic pole detection start position)
Magnetic pole detection completion position
10 degrees or less
Center of the direct drive motor rotation part
FLS
Servo-on position
After the motor moves to the position where the stroke limit
(FLS or RLS) is set, the magnetic pole detection starts.
Magnetic pole detection completion position
10 degrees or less
Magnetic pole detection at first servo-on (initial value)
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