11 MANUAL CONTROL

11.3.5 Inching operation example

MELSEC-Q

When "stop signal" is turned ON during inching operation:

If "stop signal" is turned ON during inching operation, the inching operation will be stopped.

While the stop signal is turned ON, the JOG start signal is ignored.

The inching operation can be re-started when the stop signal is turned OFF and then re-turned ON.

A JOG start signal OFF ON

while the stop signal is ON will be ignored.

PLC READY

ON

 

signal [Y0]

OFF

 

 

ON

QD75 READY

OFF

signal

 

[X0]

 

Forward run JOG

ON

 

start signal

OFF

[Y8,YA,YC,YE]

ON

 

Axis stop signal

OFF

[Y4,Y5,Y6,Y7]

 

 

ON

BUSY signal

OFF

[XC,XD,XE,XF]

 

Fig. 11.15 Operation when stop signal is turned ON during inching operation

POINT

The QD75 will not accept "JOG start signal" while "stop signal" is turned ON.

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Image 465
Mitsubishi Electronics QD75D, QD75P Inching operation example, When stop signal is turned on during inching operation