12 CONTROL SUB FUNCTIONS

MELSEC-Q

[2]Precautions during control

(1)When "0" is set in " Cd.10

New acceleration time value" and "

Cd.11

New

deceleration time value", the acceleration/deceleration time will not be changed even if the speed is changed. In this case, the operation will be controlled at the acceleration/deceleration time previously set in the parameters.

(2)The "new acceleration/deceleration time" is valid during execution of the positioning data for which the speed was changed. In continuous positioning control and continuous path control, the speed is changed and control is carried out with the previously set acceleration/deceleration time at the changeover to the next positioning data, even if the acceleration/deceleration time is changed to the "new

acceleration/deceleration time (

Cd.10

,

Cd.11

)".

(3)Even if the acceleration/deceleration time change is set to disable after the "new acceleration/deceleration time" is validated, the positioning data for which the "new acceleration/deceleration time" was validated will continue to be controlled with that value. (The next positioning data will be controlled

with the previously set acceleration/deceleration time.)

Example

V

Speed change

 

Speed change

 

 

Positioning start

New acceleration/deceleration

 

time ( Cd. 10 ,

Cd. 11 )

 

 

t

Acceleration/deceleration time

 

 

 

 

 

Disabled

Enabled

Disabled

change during speed change,

 

 

 

 

 

enable/disable selection

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Image 521
Mitsubishi Electronics QD75D, QD75P Precautions during control, When 0 is set in Cd.10 New acceleration time value