Home Position Return By The Proximity Dog Type 1; Home Position Return By The Proximity Dog Type 2 - Mitsubishi Electric Q Series Programming Manual

7 AUXILIARY AND APPLIED FUNCTIONS

7.3.2 Home position return by the proximity dog type 1

[Control details]
(1) Proximity dog type 1
Zero point position after proximity dog ON to OFF is home position in this
method.
When it does not pass (zero pass signal: M2406+20n OFF) the zero point from
home position return start to deceleration stop by proximity dog ON to OFF, an
error will occur and home position return is not executed. However, when "1 : Not
need to pass motor Z phase after the power supply is switched on" is selected in
the "function selection C-4" of servo parameter (expansion setting parameter), if
it does not pass zero point from home position return start to deceleration stop by
proximity dog ON to OFF, the home position return can be executed.
(2) Home position return by the proximity dog type 1
Operation of home position return by proximity dog type 1 for passing (zero pass
signal: M2406+20n ON) the zero point from home position return start to
deceleration stop by proximity dog ON to OFF is shown below.
V
Home position
return start
Proximity dog
Fig. 7.4 Home position return operation by the proximity dog type 1
(3) Home position return execution
Home position return by the proximity dog type 1 is executed using the CHGA
instruction in Section 7.3.16.
When the home position return request is ON, the proximity dog type 1 home
position return is also made even G28 of the Motion program.
Home position return direction
Home position return speed
Creep speed
OFF
ON
7 - 16
(Note) : A deceleration stop occurs after
the proximity dog OFF.
Positioning is carried out from this
position to the zero point.
The distance to the zero point is
based on the servo data.
t
Zero point
The travel value in this range is stored
in the monitor register "travel value
after proximity dog ON".
The travel value in this range is stored
in the monitor register "home position
return re-travel value".