MITSUBISHI ELECTRIC MR-J2S- CP - Manual (Page 128)

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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
Automatic/manual selection (MD0) Short (turn on) MD0-SG.
Point table No. selection 1 (DI0)
Open (turn off) DI0-SG.
Manual home position return mode
selection
Point table No. selection 2 (DI1) Open (turn off) DI1-SG.
Dog cradle type home position return Parameter No.8 7: Select the dog cradle type.
Home position return direction Parameter No.8
Refer to section 4.4.1 (2) and select the home
position return direction.
Dog input polarity Parameter No.8
Refer to section 4.4.1 (2) and 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-
phase signal position.
Home position return
acceleration/deceleration time
constants
Point table No.1
Use the acceleration/deceleration time constant of
point table No. 1.
Home position return position data Parameter No.42
Use to set the current position on completion of
home position return.
(2) Timing chart
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Automatic/manual
selection (MD0)
Movement finish (MEND)
Rough match (CPO)
Home position return
completion (ZP)
Servo motor speed
Z-phase
Proximity dog (DOG)
Forward rotation
start (ST1)
Creep speed
Home position return speed
Home position shift distance
Proximity dog
5ms or more
3ms or less
Home position address
Parameter No. 42
ON
OFF Reverse rotation
start (ST2)
The parameter No.42 (home position return position data) setting value is the positioning address
after the home position return is completed.