Phase signal position | Mitsubishi Electronics MR-J2S- CL guide

4. OPERATION

4.4.9 Dog cradle type home position return

The position where the first Z-phase signal is issued after detection of the proximity dog front end can be defined as a home position.

(1)Signals, parameters

Set the input signals and parameters as indicated below.

Item	Device/Parameter used	Description
Manual home position return mode	Automatic/manual selection (MD0)	MD0 is switched on.
selection	Automatic/manual selection (MD0)	MD0 is switched on.
selection
Dog cradle type home position	Parameter No.8	7: Select the dog cradle type.
return	Parameter No.8	7: Select the dog cradle type.
return
Home position return direction	Parameter No.8	Refer to Section 4.4.1 (2) in this section and
Home position return direction	Parameter No.8	select the home position return direction.
		select the home position return direction.
Dog input polarity	Parameter No.8	Refer to Section 4.4.1 (2) in this section and
Dog input polarity	Parameter No.8	select the dog input polarity.
		select the dog input polarity.
Home position return speed	Parameter No.9	Set the speed till the dog is detected.
Creep speed	Parameter No.10	Set the speed after the dog is detected.
Home position shift distance	Parameter No.11	Set when the home position is moved from the Z-
Home position shift distance	Parameter No.11	phase signal position.
		phase signal position.
Home position return		Use the acceleration/deceleration time constants
acceleration/deceleration time	Parameter No.41	Use the acceleration/deceleration time constants
acceleration/deceleration time	Parameter No.41	set in parameter No. 41.
constants		set in parameter No. 41.
constants
Home position return position data	Parameter No.42	Used to set the current position on completion of
Home position return position data	Parameter No.42	home position return.
		home position return.
	Select the program including the
Program	"ZRT" command that executes a
	home position return.

(2) Timing chart

The following shows the timing chart that starts after selection of the program including the "ZRT" command.

Automatic/manual	ON
selection (MD0)	OFF

Movement complete (PED) ON

	OFF
Home position return	ON
completion (ZP)	OFF

		Home position return speed Home position shift distance
Forward		Creep speed
rotation
Servo motor speed 0r/min		3ms or less
Reverse		3ms or less	Home position address
rotation			Home position address
rotation		Proximity dog	Parameter No. 42
		Proximity dog	Parameter No. 42
Z-phase	ON
	OFF
Proximity dog (DOG)	ON
Proximity dog (DOG)	OFF
Forward rotation	ON
start (ST1)	OFF

5ms or more

The address on completion of home position return is the value automatically set in parameter No.42 (home position return position data).

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MR-J2S- CL specifications

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Mitsubishi Electronics MR-J2S- CL Dog cradle type home position return, Phase signal position

Models: MR-J2S- CL