Dogless Z-Phase Reference Home Position Return Type - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

5. HOW TO USE THE PROGRAM

5.4.12 Dogless Z-phase reference home position return type

Starting from the Z-phase pulse position after the start of the home position return, the position is shifted by
the home position shift distance. The position after the shifts is used as the home position.
(1) Device/parameter
Set input devices and parameters as follows.
Item
Automatic operation mode of
the program method
Dogless 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 time constant
Home position return
deceleration time constant
Home position return position
data
Program
(2) Timing chart
The following shows a timing chart after a program containing a "ZRT" command is selected.
MD0 (Operation mode selection 1)
MEND (Travel completion)
PED (Position end)
CPO (Rough match)
ZP (Home position return completion)
Forward rotation
Servo motor speed 0 r/min
Reverse rotation
Z-phase
ST1 (Forward rotation start)
ST2 (Reverse rotation start)
The setting value of [Pr. PT08 Home position return position data] is used as the position address at the
home position return completion.
Used device/parameter
MD0 (Operation mode selection 1)
[Pr. PT04]
[Pr. PT04]
[Pr. PT29]
[Pr. PT05]
[Pr. PT06]
[Pr. PT07]
[Pr. PC30]
[Pr. PC31]
[Pr. PT08]
DI0 (Program No. selection 1) to
DI7 (Program No. selection 8)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Home position return speed
Acceleration time
constant
Home position return position data
3 ms or shorter
Home position shift distance
ON
OFF
ON
5 ms or longer
OFF
ON
OFF
5 - 57
www.kavrammuhendislik.com.tr
Setting
Switch on MD0.
_ _ _ A: Select the dogless type (Z-phase
reference).
Refer to section 5.4.1 (2) to select the home
position return direction.
Refer to section 5.4.1 (2) to select the dog input
polarity.
Set the rotation speed until a dog is detected.
Set the rotation speed after a dog is detected.
Set this item to move the home position set when
the Z-phase signal is given.
The acceleration time constant set for [Pr. PC30]
is used.
The deceleration time constant set for [Pr. PC31]
is used.
Set a current position at home position return
completion.
Select a program containing "ZRT" command that
performs a home position return.
Deceleration time constant
Creep speed