Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

Page: 187 / 598

5 MANUAL CONTROL
5.3 Inching Operation
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5
5.3
Inching Operation
Operation overview of the inching operation
Use the hardware stroke limit function when performing the inching operation at a position close to the upper
or lower limit. (
 Page 241 Hardware stroke limit function)
When the hardware stroke limit function is not used, the workpiece moves beyond the movement range,
resulting in an accident.
Operation
In the inching operation, pulses are output to the drive unit for 1.77ms from when Forward run JOG start signal [Y8, YA, YC,
YE] or Reverse run JOG start signal [Y9, YB, YD, YF] is turned on to move the workpiece for a specified movement amount.
The following shows an operation example of the inching operation.
No. Operation
(1) When a start signal is turned on, the inching operation is performed in the direction specified with the start signal. BUSY signal turns on at this
time.
(2) The workpiece moves for the movement amount set in [Cd.16] Inching movement amount.
(3) When the speed reaches 0, the operation stops. BUSY signal turns off at this time. Positioning complete signal turns on at the same time.
(4) Positioning complete signal turns off after the time set in [Pr.40] Positioning complete signal output time elapses.
(1)
(2)
(3) (4)
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
ON
PLC READY signal
[Y0]
RD75 READY signal
[X0]
Forward run JOG
start signal
[Y8, YA, YC, YE]
BUSY signal
[XC, XD, XE, XF]
Positioning complete
signal
[X14, X15, X16, X17]
Forward run inching operation
Pr.40
Positioning complete signal
output time