Справочник Пользователя для Mitsubishi Electronics QD75MH2

 
 

 

12 - 7 

MELSEC-Q

 

12   CONTROL SUB FUNCTIONS 

 

[2]   Precaution during control 

(1)  The following table shows whether the OPR retry function may be executed 

by the "

Pr.43

 OPR method".  

 

Pr.43

OPR method 

Execution status of OPR retry function 

Near-point dog method 

  :  Execution possible 

Count method 1) 

  :  Execution possible 

Count method 2) 

  :  Execution possible 

Data set method 

  : 

 

(2)  Always establish upper/lower limit switches at the upper/lower limit positions 

of the machine, and connect an QD75MH module. If the OPR retry function 
is used without hardware stroke limit switches, the motor will continue 
rotation until a hardware stroke limit signal is detected. 

 

(3)  Always wire QD75MH upper/lower limit switches even when the OPR 

function is invalidated. Control cannot be carried out with the QD75MH 
unless the wiring is carried out. 

 

(4)  Do not carry out settings so that the servo amplifier power turns OFF by the 

upper/lower limit switches connected to the QD75MH. If the servo amplifier 
power is turned OFF, the OPR retry cannot be carried out. 

 

(5)  The operation decelerates upon detection of the hardware limit signal, and 

the movement starts in the opposite direction. In this case, however, an 
error (104, 105) is not produced. 

 

[3]   Setting the OPR retry function 

To use the "OPR retry function", set the required details in the parameters shown 
in the following table, and write them to the QD75MH. 
When the parameters are set, the OPR retry function will be added to the 
machine OPR control. The set details are validated at the rising edge (OFF   
ON) of the PLC READY signal (Y0). Set "

Pr.57

 Dwell time during OPR retry" 

according to the user's requirements. 

 

Setting item 

Setting 

value 

Setting details 

Factory-set 
initial value 

 Pr.48    OPR retry 

1 

Set "1: Carry out OPR retry by limit switch". 

0 

 Pr.57   

Dwell time during 
OPR retry 

 

Set the deceleration stop time during OPR retry. 
(Random value between 0 and 65535 (ms)) 

0 

 

                   Refer to Section 5.2 "List of parameters" for setting details. 

 

REMARK 

•

 Parameters are set for each axis.  

•

 It is recommended that the parameters be set whenever possible with GX 

Configurator-QP. Execution by PLC program uses many PLC programs and 
devices. The execution becomes complicated, and the scan times will increase.