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12 CONTROL SUB FUNCTIONS
Lower limit
Zero signal
Machine OPR start
[2] Setting range for the OP shift amount
Set the OP shift amount within the range from the detected zero signal to the
upper/lower limit switches.
Setting range of the
negative OP
Setting range of the positive OP shift amount
shift amount
Address decrease
Address increase
direction
direction
Fig. 12.5 Setting range for the OP shift amount
[3] Movement speed during OP shift
When using the OP shift function, the movement speed during the OP shift is set
Pr.56
in "
Speed designation during OP shift". The movement speed during the
OP shift is selected from either the "
speed".
The following drawings show the movement speed during the OP shift when a
mechanical OPR is carried out by the near-point dog method.
(1) OP shift operation at the "
Pr.56
(When "
Pr. 44 OPR
direction
Near-point dog
Zero signal
Fig. 12.6 OP shift operation at the OPR speed
Near-point dog
Pr. 44 OPR direction
Pr.46
Pr.46
OPR speed"
speed designation during OP shift" is 0)
Pr. 46 OPR
speed
When the " Pr. 53 OP
shift amount" is negative
12 - 9
MELSEC-Q
Upper limit
OPR speed" or the "
Pr.47
When the " Pr. 53 OP
shift amount" is positive
OP
Creep
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Troubleshooting
