6 POSITIONING CONTROL

6.23.4Home position return by the count type 1(1)Count type 1

After the proximity dog ON, the zero point after the specified distance (travel value after proximity dog ON) is home position in this method. (If the proximity dog signal of servo amplifier is used, the count type 1 home position return cannot be executed.)

When the zero point is not passed (zero pass signal: M2406+20n OFF) until it travels the distance set in the "travel value after proximity dog ON" from home position return start, 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 the zero point is not passed until it travels the distance set in the "travel value after proximity dog ON" from home position return start, the home position return can be executed.

The travel value after proximity dog ON is set in the home position return data (Refer to Section 6.23.1).

(2) Home position return by the count type 1

Operation of home position return by count type 1 for passing the zero point during travel of specified distance set in the "travel value after proximity dog ON" from the home position return start is shown below.

 

 

 

 

Home position return

(Note) : After the proximity dog ON, positioning of the

 

 

 

 

"travel value after the proximity dog ON" of

V

 

 

direction

 

 

the home position return data and the

Home position

 

Home position

 

 

 

positioning from the position to zero point.

 

 

return start

 

return speed

 

 

 

 

 

 

 

 

 

 

Creep speed

The distance to the zero point is

 

 

 

 

 

based on the servo data

 

 

 

 

 

 

 

t

 

 

Proximity dog

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

Zero point

 

 

 

 

 

 

"Travel value after proximity dog ON" of the home position return data

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. 6.35 Home position return operation by the count type 1

(3) Home position return execution

Home position return by the count type 1 is executed using the servo program in Section 6.23.16.

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