Mitsubishi MR-JE-40A - Dog Cradle Type Home Position Return

4. HOW TO USE THE POINT TABLE
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4.4.9 Dog cradle type home position return
A position, which is specified by the first Z-phase signal after the front end of a proximity dog is detected, is
set as the home position.
(1) Device/parameter
Set input devices and parameters as follows.
Item Device/parameter to be used Setting
Home position return mode
selection
MD0 (Operation mode selection 1) Switch on MD0.
DI0 (Point table No. selection 1) to
DI4 (Point table No. selection 5)
Switch off DI0 to DI4.
Dog cradle type home
position return
[Pr. PT04] _ _ _ 7: Select the dog cradle type.
Home position return
direction
[Pr. PT04]
Refer to section 4.4.1 (2) to select the home
position return direction.
Dog input polarity [Pr. PT29]
Refer to section 4.4.1 (2) to select the dog
input polarity.
Home position return speed [Pr. PT05]
Set the rotation speed specified until a dog is
detected.
Creep speed [Pr. PT06]
Set the rotation speed specified after a dog is
detected.
Home position shift distance [Pr. PT07]
Set this to shift the home position, which is
specified by the Z-phase signal.
Acceleration time
constant/deceleration time
constant of home position
return
Point table No. 1
The acceleration/deceleration time constant
of point table No. 1 is used.
Home position return position
data
[Pr. PT08]
Set the current position when the home
position return is complete.
(2) Timing chart
ON
OFF
MEND
(Travel completion)
ON
OFF
CPO (Rough match)
ON
OFF
Servo motor
speed
MD0
(Operation mode
selection 1)
Forward rotation
Reverse rotation
ON
OFF
DOG (Proximity dog)
ZP
(Home position return
completion)
ON
OFF
ON
OFF
ON
OFF
ST1
(Forward rotation start)
ST2
(Reverse rotation start)
3 ms or shorter
Home position return speed
Deceleration time constant
Creep speed
Home position
shift distance
Home position return position data
5 ms or longer
Acceleration time constant
Proximity dog
ON
OFF
Z-phase
0 r/min
The setting value of [Pr. PT08 Home position return position data] is used as the position address at the
home position return completion.