Mitsubishi Electric MELSERVO-J2 Series Instruction Manual page 101

4. OPERATION
4.4.5 Stopper type home position return
In stopper type home position return, a machine part is pressed against a stopper or the like by jog
operation, manual pulse generator operation or the like to make a home position return and that position
is defined as a home position.
(1) Signals, parameters
Set the input signals and parameters as follows:
Manual home position
return mode selection
Stopper type home position
return
Home position return
direction
Home position return speed
Stopper time
Stopper type home position
return torque limit
Home position return
acceleration time constant
Home position return
position data
(2) Timing chart
Automatic/manual
mode selection
(MDO)
In position (INP)
Rough match
(CPO)
Home position
return completion
(ZP)
Servo motor speed
Forward rotation
start (ST1)
Reverse rotation
start (ST2)
Limiting
torque (TLC)
Torque limit value
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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Item 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.9
Parameter No.44
Parameter No.45
Point table No.1
Parameter No.42
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Point table No.1
Acceleration time constant
ON
OFF
ON
OFF
ON
OFF
Parameter No. 28
search engine
Home position return
speed Parameter No.9
5ms or less
Stopper
10ms or more
Stopper time
Parameter No. 44
Parameter No. 45 Parameter No. 28
4 - 28
Description
Short MD0-SG (ON).
Open DI0-SG (OFF).
Open DI1-SG (OFF).
3 : Stopper type home position return is
selected.
Refer to Section 4.4.1 (2) and choose the home
position return direction.
Set the speed till contact with the stopper.
Time from when the part makes contact with
the stopper to when home position return data
is obtained to output home position return
completion (ZP)
Set the servo motor torque limit value for
execution of stopper type home position return.
Use the acceleration time constant of point
table No.1.
Set the current position at home position
return completion.
Home position address
Parameter No. 42