Speed-Position Control Switch Mode - Mitsubishi Electric MELSEC Q Series User Manual

9.6.2

Speed-position control switch mode

In the speed-position control switch mode, pulses that correspond to the specified positioning speed are output in the
direction specified by a start signal. Then, once Speed-position switching command signal (CHANGE) is input, the
operation switches to position control with the specified movement amount.
The speed-position control switch mode operates with the incremental system in which movement amount from a start
address to an end address is specified.
Specify a forward start or a reverse start using one of the following signals.
Forward start signal (Y22)
Reverse start signal (Y23)
(1) Switchover from speed control to position control
To switch the operation from speed control to position control, Speed-position switching enable signal (Y2C) must
be turned on before inputting Speed-position switching command signal (CHANGE).
If Speed-position switching command signal (CHANGE) is input when Speed-position switching enable signal
(Y2C) is off, the speed control continues without being switched to position control. The operation switches to
position control when Speed-position switching command signal (CHANGE) is input after Speed-position
switching enable signal (Y2C) was turned on.
(2) Operation of the speed-position control switch mode
The operation is as follows.
Positioning start signal
(Y22, Y23)
BUSY signal
(X14)
Positioning complete
signal (X15)
Speed-position switching
enable signal (Y2C)
Speed-position switching
command signal (CHANGE)
Md.1
Current feed value
Start signal
v
Speed control
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
0
Executed by the QD73A1
CHAPTER 9 MAJOR POSITIONING CONTROL
Positioning system
Forward start (address increasing)
Reverse start (address decreasing)
Movement amount set to "
Da.3
Position control
ON
ON
0
P1
Da.2 Positioning address P1"
Positioning speed V1
t
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