Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

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7 CONTROL SUB FUNCTIONS
7.2 Sub Functions Specific to Machine OPR
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7
OP shift function
When the machine OPR is performed, the OP is normally established using a near-point dog, stopper, and Zero signal.
However, by using the OP shift function, the machine can be moved for a specified movement amount from the position where
Zero signal was detected. The point moved from that position can be interpreted as a mechanically established OP.
The OP shift function can be used regardless of the setting in [Pr.43] OPR method.
The section explains the OP shift function.
Control details
The following figure shows the operation of the OP shift function.
Setting range of the OP shift amount
Set the OP shift amount within the range from the detected zero signal to the upper/lower limit switches.
(1) The OPR is performed in the direction set in [Pr.44] OPR direction by Machine OPR start.
(2) The OPR operation stops when Zero signal is detected and outputs Deviation counter clear output to the drive unit.
(3) After Deviation counter clear output is output, the OP shift operation is performed.
(4) The position moved for the amount set in [Pr.53] OP shift amount is set as the OP, and the machine OPR is completed.
(1)
(2)
(4)
(3)
Pr.44
Pr.46
Pr.47
Pr.53
OPR direction
Select the speed in Pr.56 Speed
specification during OP shift.
Zero signal
OPR speed
Near-point dog
Creep speed
OP shift amount
Pr. 44
Setting range of
the negative OP
shift amount
Setting range of the positive OP shift amount
Address
decrement
Upper limit
Lower limit
Near-point dog
OPR direction
Zero signal
Address
increment