Справочник Пользователя для Mitsubishi Electronics QD75D2N

 
 

 

12 - 27 

MELSEC-Q

12   CONTROL SUB FUNCTIONS 

 

12.4 Functions to limit the control 

Functions to limit the control include the "speed limit function", "torque limit function", 
"software stroke limit", and "hardware stroke limit". Each function is executed by 
parameter setting or sequence program creation and writing.   

 

12.4.1 Speed limit function 

The "speed limit function" limits the command speed to a value within the "speed limit 
value" setting range when the command speed during control exceeds the "speed limit 
value".  

 

The details shown below explain about the "speed limit function".   
    [1] Relation between the speed limit function and various controls 
  [2] Control precautions 
  [3] Setting method 

 

[1]      Relation between the speed limit function and various controls 

The following table shows the relation of the "speed limit function" and various 
controls.  

 

Control type 

Speed limit function  Speed limit value

OPR 
control 

Machine OPR control 

 Pr.8   Speed limit 

value 

Fast OPR control 

Major 
positioning 
control 

Position 
control

1-axis linear control 
2- to 4-axis linear 
interpolation control 

 

1-axis fixed-feed control 
2- to 4-axis fixed-feed 
control (interpolation) 

 

2-axis circular interpolation 
control 

 

1- to 4-axis Speed control 
Speed-position switching control, 
Position-speed switching control 

 

Other 
control

Current value changing 

– 

Setting value invalid

JUMP instruction, NOP 
instruction, LOOP to 
LEND 

– 

Manual 
control 

JOG operation, Inching operation 

 

 Pr.31   JOG speed 

limit value

Manual pulse generator operation 

– 

Setting is invalid 

 

 : Always set 

–  :  Setting not required (Setting value is invalid. Use the initial values or setting values 

within a range where no error occurs.)