Справочник Пользователя для Mitsubishi Electronics QD77MS16

 
 

11 - 15 

Chapter 11    Manual Control

 

11.3 Inching operation 

11.3.1 Outline of inching operation 

 Inching operation 

 

In inching operation, pulses are output to the servo amplifier at operation cycle to 
move the workpiece by a designated movement amount after the forward run JOG 
start signal or reverse JOG start signal is turned ON. 

 

Signal 

QD77MS2 

QD77MS4 

QD77MS16 

Forward run JOG start signal

Y8, YA 

Y8, YA, YC, YE

[Cd.181] Forward run JOG start

Reverse run JOG start signal

 

Y9, YB 

Y9, YB, YD, YF

[Cd.182] Reverse run JOG start

 

The following shows the example of inching operation. 

 

1)

When the start signal is turned ON, inching operation is carried out in the direction 
designated by the start signal. In this case, BUSY signal is turned from OFF to ON. 

2)

The workpiece is moved by a movement amount set in "[Cd.16] Inching movement 
amount". 

3)

The workpiece movement stops when the speed becomes "0". In this case, BUSY signal 
is turned from ON to OFF. The positioning complete signal is turned from OFF to ON. 

4)

The positioning complete signal is turned from ON to OFF after a time set in "[Pr.40] 
Positioning complete signal output time" has been elapsed. 

 

 

[QD77MS4 operation example] 

 

PLC READY signal [Y0]

OFF

ON

BUSY signal
[XC, XD, XE, XF]

OFF

OFF

ON

Positioning complete
signal
[X14, X15, X16, X17]

OFF

ON

Forward run inching operation

ON

OFF

READY signal [X0]

Forward run JOG start signal
[Y8, YA, YC, YE]

1)

2)

3)

4)

Positioning complete signal
output time

Pr.40

ON

ON

OFF

All axis servo ON
[Y1]

 

 

(Note): Refer to Section 3.3 for input/output signal of QD77MS16.

 

Fig. 11.11 Inching operation