6 POSITIONING CONTROL

(2) Setting range of home position shift amount

Set the home position shift amount within the range of from the detected zero signal to external upper/lower limit switch (FLS/RLS). If the range of external upper/lower limit switch is exceeded, a major error "external limit switch detection error" (error codes: 1102, 1103) will occur at that time and the home position return is not ended.

Setting range of negative home position shift amount

Setting range of positive home position shift amount

Address

Address

decrease

increase

direction

direction

RLS

FLS

Proximity dog

Home position return direction

Zero point

Fig. 6.47 Setting range of home position shift amount

(3) Travel speed at the home position shift

When the home position shift function is used, set the travel speed at the home position shift as the speed set at the home position shift. Either the home position return speed or creep speed is selected as the travel speed at the home position shift.

The travel speed at the home position shift for the home position return by proximity dog type is shown below.

(a) Home position shift operation with the "home position return speed"

V

 

 

Home position

 

 

 

Home position

 

 

 

return direction

 

 

 

return speed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Home position shift

amount is positive

Home position

Home position return start

Proximity dog

Home position

Home position shift amount is negative

Zero point

Fig. 6.48 Operation for home position shift with the home position return speed

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