Dog Cradle Type Home Position Return - Mitsubishi Electric Melservo-J2-SUPER series Instruction Manual

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
Manual home position return mode
selection
Dog cradle type home position
return
Home position return direction
Dog input polarity
Home position return speed
Creep speed
Home position shift distance
Home position return
acceleration/deceleration time
constants
Home position return position data
Program
(2) Timing chart
The following shows the timing chart that starts after selection of the program including the "ZRT"
command.
Automatic/manual
selection (MD0)
Movement complete (PED)
Home position return
completion (ZP)
Forward
rotation
0r/min
Servo motor speed
Reverse
rotation
Z-phase
Proximity dog (DOG)
Forward rotation
start (ST1)
The address on completion of home position return is the value automatically set in parameter No.42
(home position return position data).
Device/Parameter used
Automatic/manual selection (MD0) MD0 is switched on.
Parameter No.8
Parameter No.8
Parameter No.8
Parameter No.9
Parameter No.10
Parameter No.11
Parameter No.41
Parameter No.42
Select the program including the
"ZRT" command that executes a
home position return.
ON
OFF
ON
OFF
ON
OFF
Home position return speed
3ms or less
ON
OFF
ON
OFF
ON
OFF
5ms or more
Refer to Section 4.4.1 (2) in this section and
select the home position return direction.
Refer to Section 4.4.1 (2) in this section and
select the dog input polarity.
Set the speed till the dog is detected.
Set the speed after the dog is detected.
Set when the home position is moved from the Z-
phase signal position.
Use the acceleration/deceleration time constants
set in parameter No. 41.
Used to set the current position on completion of
home position return.
Home position shift distance
Creep speed
Proximity dog
4 - 41
Description
7: Select the dog cradle type.
Home position address
Parameter No. 42