Op Shift Function - Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual

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.
[Pr.44] OPR direction
[Pr.46] OPR speed
1.
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.
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.
Configurable range of
the negative OP shift
Direction
address
decrease
Lower limit
Zero signal
2.
Near-point dog
Zero signal
Configurable range of
the positive OP shift
Direction of
address increase
Near-point dog
[Pr.44] OPR direction
Select the speed using parameter
"[Pr.56] Speed specification
during OP shift".
[Pr.47] Creep speed
4.
[Pr.53] OP shift amount
3.
Upper limit
12.2 Sub Functions Specific to Machine OPR
12 CONTROL SUB FUNCTION
12
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