Mitsubishi A1SD75M1, User Manual

Page: 463 / 746

11 - 17
MELSEC-A
11 MANUAL CONTROL
11.3 Manual pulse generator operation
11.3.1 Outline of manual pulse generator operation
Important
Create the sequence program so that " Cd.22 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 operation, pulses are input to the AD75 from the
manual pulse generator to output the position/speed command from the AD75 to
the servo amplifier by the number of input pulses, moving the work piece in the
designated direction.
The following shows and example of manual pulse generator operation.
1)
When the " Cd.22 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.22 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 [X4, X5, Y6]
Manual pulse
generator input
Positioning start complete
signal [X1, X2, X3]
Manual pulse generator operation enabled
0
OFF
ON
OFF
1) 2) 3) 4)
1
0
Cd 22 Manual pulse
generator enable flag
*
1
*
2
[Precautions]
*
1
When the input from the manual pulse generator stops, the output of the position/speed command
to the servo amplifier is completed with a delay of one control cycle time (120 to 180ms).
*
2
The start complete signal does not turn ON in manual pulse generator operation.
Fig. 11.11 Manual pulse generator operation