6 POSITIONING CONTROL

6.23.2 Home position return by the proximity dog type 1(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.

Home position return direction

V

Home position

Home position return speed

return start

 

(Note) : A deceleration stop occurs after the proximity dog OFF. Positioning is carried out from this position to the zero point.

Creep speed

The distance to the zero point is

 

based on the servo data.

 

 

t

 

 

Proximity dog

ON OFF

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".

Fig. 6.33 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 servo program in Section 6.23.16.

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