9 MAJOR POSITIONING CONTROL

MELSEC-Q

(4)When either of three axes exceeds the speed limit, that axis is controlled with the speed limit value. The speeds of the other axes are limited at the ratios of

"Da.8

Command speed".

(Examples)

 

 

 

Axis

 

 

 

 

 

 

 

Axis 1 setting

Axis 2 setting

Axis 3 setting

Setting item

 

 

 

 

 

 

 

Speed limit

 

 

 

 

Pr.8

 

4000.00mm/min

5000.00mm/min

6000.00mm/min

 

 

value

 

 

 

 

 

 

 

 

 

Command

 

 

 

 

Da.8

 

8000.00mm/min

6000.00mm/min

4000.00mm/min

 

 

speed

 

 

 

 

 

 

 

 

 

 

 

 

 

With the settings shown above, the operation speed in speed control is as follows.

Axis 1: 4000.00 mm/min (Speed is limited by

Pr.8

).

Axis 2: 3000.00 mm/min (Speed is limited at ratios in axes 1, 2, and 3

command speeds).

Axis 3: 2000.00 mm/min (Speed is limited at ratios in axes 1, 2, and 3

command speeds).

(5) An error "No command speed" (error code: 503) will occur if a current speed

(-1) is set in "

Da.8

Command speed".

(6)The software stroke limit check is not carried out when the control unit is set to "degree".

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Mitsubishi Electronics QD75D, QD75P user manual Axis 1 setting Axis 2 setting Axis 3 setting, Speed limit