Count Type Home Position Return - Mitsubishi Electric MR-J2S-CP Instruction Manual

4. OPERATION

4.4.3 Count type home position return

In count type home position return, a motion is made over the distance set in parameter No.43 (moving
distance after proximity dog) after detection of the proximity dog front end. The position where the first Z-
phase signal is given after that is defined as a home position. Hence, if the proximity dog (DOG) is 10ms
or longer, there is no restriction on the dog length. This home position return method is used when the
required proximity dog length cannot be reserved to use dog type home position return or when the
proximity dog (DOG) is entered electrically from a controller or the like.
(1) Signals, parameters
Set the input signals and parameters as follows.
Item
Manual home position return
mode selection
Count type home position return
Home position return direction
Dog input polarity
Home position return speed
Creep speed
Home position shift distance
Moving distance after proximity
dog
Home position return
acceleration/deceleration time
constants
Home position return position
data
(2) Timing chart
Movement finish (MEND)
Rough match
(CPO)
Home position return
completion (ZP)
Point table No. 1
Acceleration time constant
Servo motor speed
Z-phase
Proximity dog (DOG)
Forward rotation
start (ST1)
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.
Device/Parameter used
Automatic/manual selection (MD0)
Point table No. selection 1 (DI0)
Point table No. selection 2 (DI1)
Parameter No.8
Parameter No.8
Parameter No.8
Parameter No.9
Parameter No.10
Parameter No.11
Parameter No.43
Point table No.1
Parameter No.42
ON
OFF
ON
OFF
ON
OFF
Home position return
speed Parameter No. 9
3ms or less
Moving distance after
proximity dog
Parameter No. 43
ON
OFF
ON
OFF
5ms or more
ON
OFF
ON
OFF
Short MD0-SG (ON).
Open DI0-SG (OFF).
Open DI1-SG (OFF).
Refer to section 4.4.1 (2) and choose home
position return direction.
Refer to section 4.4.1 (2) and choose dog
input polarity.
Set speed until detection of dog.
Set speed after detection of dog.
Set when shifting the home position,
starting at the first Z-phase signal given
after passage of the proximity dog front end
and movement over the moving distance.
Set the moving distance after passage of
proximity dog front end.
Use the acceleration/deceleration time
constants of point table No.1.
Use to set the current position on
completion of home position return.
Point table No. 1
Deceleration time
constant
Creep speed
Parameter No. 10
Proximity dog
4 - 30
Description
1 : Count type home position return
is selected.
Home position
shift distance
Parameter No. 11
Home position
Home position address
Parameter No. 42