User`s manual

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MELSEC-Q
1 PRODUCT OUTLINE
Pulse output operation at stop
When the axis stops due to stop cause occurrence, if there is the pulse being output
when the set deceleration stop time has elapsed from the start of deceleration stop,
the output as much as 1 pulse will be done.
The following shows the pulse output operation at deceleration stop.
ON
OFF
V
t
Pulse that is being output when set
deceleration stop time has elapsed
will be output.
Bias speed at start
Stop cause occurrence
(Start of deceleration stop)
Set deceleration stop time
Pulse output
BUSY signal
1 pulse
*4
*5
*7
*6
4: "Stop cause" indicates any of the following.
•
Error occurred in the PLC CPU or QD70.
•
JOG start signal (Y18 to Y1F) has turned OFF during JOG operation.
•
Axis stop signal (Y10 to Y17) has turned ON.
•
Speed change to speed 0 (pulse/s) (when bias speed at start is 0 (pulse/s))
•
Machine OPR control of count 2
5: "Set deceleration stop time" is any of the following.
•
During positioning control : Da. 4
DEC/STOP time
•
At speed change to speed 0 (pulse/s) :
Cd. 9
DEC/STOP time at speed change
•
During machine OPR control of count 2 : OPR. 7
DEC/STOP time at OPR
•
During JOG operation : JOG. 3
JOG DEC time
6: When the axis is decelerated to a stop by a speed change to speed 0 (pulse/s), the BUSY signal
does not turn OFF.
7: The same operation is performed when an immediate stop cause occurs during machine OPR
control (except the case of count 2).