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MELSEC-Q

 

12   CONTROL SUB FUNCTIONS 

 

[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.)  

Cd.12  Acceleration/deceleration time
            change during speed change,
            enable/disable selection

Enabled

Speed change

New acceleration/deceleration

time ( Cd. 10 ,  Cd. 11 )

t

V

Disabled

Speed change

Positioning start

Disabled

Example