Dog Type Last Z-Phase Reference Home Position Return - Mitsubishi Electric MELSERVO-J4 Instruction Manual

4. HOW TO USE THE POINT TABLE

4.4.10 Dog type last Z-phase reference home position return

After the front end of a proximity dog is detected, the position is shifted away from the proximity dog at the
creep speed in the reverse direction and then specified by the first Z-phase signal. The position of the first Z-
phase signal is used as the home position.
(1) Device/parameter
Set input devices and parameters as follows.
Home position return mode
selection
Dog type last Z-phase
reference home position
return
Home position return
direction
Dog input polarity
Home position return speed
Creep speed
Home position shift distance
Home position return
acceleration/deceleration time
constant
Home position return position
data
Item Used device/parameter
MD0 (Operation mode selection 1)
DI0 (Point table No. selection 1) to
DI7 (Point table No. selection 8)
[Pr. PT04]
[Pr. PT04]
[Pr. PT29]
[Pr. PT05]
[Pr. PT06]
[Pr. PT07]
Point table No. 1
[Pr. PT08]
Switch on MD0.
Switch off DI0 to DI7.
_ _ _ 8: Select the dog type last Z-phase
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 until the dog is
detected.
Set the rotation speed after the dog is
detected.
Set this item to shift the home position, which
is specified by the Z-phase signal.
Use the acceleration/deceleration time
constant of point table No. 1.
Set the current position at the home position
return completion.
4 - 61
Setting