Dog-Type Reference Position Return Adjustment Procedures - Mitsubishi Electric M800VS Series Connection And Set Up Manual

M800VS/M80V Series Connection and Setup Manual
22 Setting the Position Detection System
22.2 Adjustment of Reference Position Return in Relative Position Detection System

22.2.2 Dog-type Reference Position Return Adjustment Procedures

Adjust the dog-type reference position return with the following steps.
(1) Select [Param] from the maintenance screen, and then use the page up/down keys to select [Zp-rtn param].
The [zero point parameter] screen appears.
(2) Set the following parameters to "0" on the [zero point parameter] screen.
Reference position shift amount (#2027 G28sft)
Grid mask amount (#2028 grmask)
(3) Turn the power OFF and ON, and then execute the reference position return.
Note
 Select "reference position return mode" and use the switches on the machine operation panel to command and operate
axis movement. The panel switches are made by the machine tool builder.
(4) Select [Drv mon] screen from the diagnosis screen, and display the drive monitor screen.
Feed the page and check "Grid space" and "Grid amount".
(5) Determine the grid mask amount according to the state as shown below.
Grid space
When is smaller
2
than the grid amount
Grid space
When is larger
2
than the grid amount
IB-1501613-A
Axis speed
0
Grid point
Near-point dog
OFF
ON
Switch
Grid mask amount = Grid amount -
Axis speed
Electrical zero point before the grid mask setting
(the exact point is set after the grid mask setting)
Grid point
Near-point dog
OFF
ON
Switch
Grid amount
Grid mask amount = Grid amount +
460
Electrical zero point
(the first grid after the switch is turned ON and OFF)
Reference position
Grid mask
#2027 G28sft
Reference position
#2028
shift distance
Grid space
Grid mask
amount
2
Grid amount
Grid space
Grid space
2
Electrical zero point after the grid mask setting
Reference position
Grid space
#2027 G28sft
Grid mask
Reference position
shift distance
Grid space
2
Grid amount
after the grid mask
#2028
setting
Grid mask amount
Grid space
2
Position
+
Position