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8 OPR CONTROL
8.2.2 Machine OPR method
The method by which the machine OP is established (method for judging the OP position and
machine OPR completion) is designated in the machine OPR according to the configuration
and application of the positioning method.
The following table shows the six methods that can be used for this OPR method.
(The OPR method is one of the items set in the OPR parameters. It is set in "
method" of the basic parameters for OPR.)
Pr.43
OPR method
Near-point dog method
Stopper method 1)
Stopper method 2)
Stopper method 3)
Count method 1)
Count method 2)
: The following are the signals input as the zero signals of the QD75 in the corresponding OPR methods.
Near-point dog method, count method 1): Signal that is output as a single pulse at one motor revolution (e.g. Z-phase signal
Stopper method 2), 3)
Deceleration starts by the OFF
" Pr.47
Creep speed".)
The operation stops at the first zero signal
OFF. When a "deviation counter clear output" is completed, the machine OPR is
completed.
The stopper position is regarded as the OP.
After the deceleration starts by the OFF
against the stopper at the " Pr.47
The machine OPR is regarded as completed on completion of the deviation counter clear
output provided after " Pr.49
The stopper position is regarded as the OP.
After the deceleration starts by the OFF
against the stopper at the " Pr.47
The machine OPR is regarded as completed on completion of the deviation counter clear
output provided after the zero signal
The stopper position is regarded as the OP.
The machine starts at the " Pr.47
against the stopper at the " Pr.47
The machine OPR is regarded as completed on completion of the deviation counter clear
output provided after the zero signal
The deceleration starts by the OFF
at the " Pr.47
Creep speed".
The machine stops at the zero signal
Setting for the movement amount after near-point dog ON" from the near point dog OFF
ON position. When a "deviation counter clear signal output" is completed, the machine
OPR is regarded as completed.
The deceleration starts by the OFF
at the " Pr.47
Creep speed".
The machine moves the distance set in the " Pr.50
after near-point dog ON" from the near point dog OFF
position. The machine OPR is then regarded as completed.
output from the drive unit)
: Signal that is output on detection of contact with the stopper. (Input externally)
REMARK
Creep speed
The stopping accuracy is poor when the machine suddenly stops from fast speeds. To
improve the machine's stopping accuracy, its must change over to a slow speed before
stopping. This speed is set in the "
Get other manuals https://www.bkmanuals.com
Operation details
ON of the near-point dog. (Speed is reduced to
after the near-point dog turns from ON
ON of the near-point dog, the machine presses
Creep speed" and stops.
OPR dwell time" passed after stoppage.
ON of the near-point dog, the machine presses
Creep speed" and stops.
is detected after stoppage.
Creep speed" from the beginning, then presses
Creep speed" and stops.
is detected after stoppage.
ON of the near-point dog, and the machine moves
after moving the distance set in the " Pr.50
ON of the near-point dog, and the machine moves
Setting for the movement amount
Pr.47
Creep speed".
8 - 5
MELSEC-Q
Pr.43
ON position, and stops at that
OPR
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