Dog Type Rear End Reference Home Position Return - Mitsubishi MR-JE-200A Instruction Manual

4. HOW TO USE THE POINT TABLE

4.4.7 Dog type rear end reference home position return

Deceleration starts from the front end of a proximity dog. After the rear end is passed, the position is shifted
by the travel distance after proximity dog and the home position shift distance. The position after the shifts is
set as the home position. The home position return is available independently of the Z-phase signal.
Changing the creep speed may change the home position.
(1) Device/parameter
Set input devices and parameters as follows.
Home position return mode
selection
Dog type rear end reference
home position return
Home position return
direction
Dog input polarity
Home position return speed
Creep speed
Home position shift distance
Travel distance after proximity
dog
Acceleration time
constant/deceleration time
constant of home position
return
Home position return position
data
POINT
This home position return method depends on the timing of reading DOG
(Proximity dog) that has detected the rear end of a proximity dog. Therefore,
when a home position return is performed at a creep speed of 100 r/min, the
home position has an error of 200 pulses (for HG series servo motor). The
higher the creep speed, the greater the error of the home position.
Item Device/parameter to be used
MD0 (Operation mode selection 1)
DI0 (Point table No. selection 1) to
DI4 (Point table No. selection 5)
[Pr. PT04]
[Pr. PT04]
[Pr. PT29]
[Pr. PT05]
[Pr. PT06]
[Pr. PT07]
[Pr. PT09]
Point table No. 1
[Pr. PT08]
Switch on MD0.
Switch off DI0 to DI4.
_ _ _ 5: Select the dog type (rear end
detection/rear end reference).
Refer to section 4.4.1 (2) to select the home
position return direction.
Refer to section 4.4.1 (2) to select the dog
input polarity.
Set the rotation speed specified until a dog is
detected.
Set the rotation speed specified after a dog is
detected.
Set this to shift the home position, which is
specified after the rear end of a proximity dog
is passed.
Set the travel distance after the rear end of a
proximity dog is passed.
The acceleration/deceleration time constant
of point table No. 1 is used.
Set the current position when the home
position return is complete.
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Setting