Справочник Пользователя для Mitsubishi Electronics QD75MH2

 
 

 

11 - 27 

MELSEC-Q

 

11   MANUAL CONTROL 

 

11.4 Manual pulse generator operation 

11.4.1 Outline of manual pulse generator operation 

Important 

 

Create the PLC program so that "

Cd.21

 Manual pulse generator enable flag" is 

always set to "0" (disabled) when a manual pulse generator operation is not carried 
out. 

  Mistakenly touching the manual pulse generator when the manual pulse 

generator enable flag is set to "1" (enable) can cause accidents or incorrect 
positioning. 

 

 Manual pulse generator operation 

 

In manual pulse generator operations, pulses are input to the QD75MH from the 
manual pulse generator. This causes the same No. of input pulses to be output 
from the QD75MH to the servo amplifier, and the workpiece is moved in the 
designated direction.  
The following shows and example of manual pulse generator operation.  

 

1) 

When the "

Cd.21

 Manual pulse generator enable flag" is set to "1", the BUSY signal 

turns ON and the manual pulse generator operation is enabled. 

2) 

The workpiece is moved corresponding to the No. of pulses input from the manual pulse 
generator. 

3) 

The workpiece movement stops when no more pulses are input from the manual pulse 
generator. 

4) 

When the "

Cd.21

 Manual pulse generator enable flag" is set to "0", the BUSY signal 

turns OFF and the manual pulse generator operation is disabled. 

 

Manual pulse 
generator 
operation stops

t

BUSY signal  [XC, XD, YE, XF]

Manual pulse 
generator input

Start complete signal
                [X10, X11, X12, X13]  

Manual pulse generator operation enabled

0

ON

OFF

ON

OFF

1) 2)

3)

4)

1

0

Cd. 21 Manual pulse
generator enable flag

1

2

 

[Precautions] 

1   If the input from the manual pulse generator stops, the machine will decelerate to a stop within 

90 ms.  

2   The start complete signal does not turn ON in manual pulse generator operation. 

Fig. 11.18 Manual pulse generator operation