Pcon dedicated function plc input signal – IAI America PCON-CFA User Manual
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3.
ACON-C/CG, PCON-C/CG
CC-Link
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(26) Load Output Judgment (LOAD)
This signal is available only in the pressing operation.
When this signal is used for pressing-in purpose, it should be know whether if the set load threshold is
reached during the pressing operation.
The load threshold and inspected width range are set using the PLC's register. When the command
torque (motor current) exceeds the threshold within the inspected width range, this signal is turned
“ON”.
This signal judges the load output based on the fact that the command torque excesses the threshold
for the specified time period.
This processing procedure is the same as for the pressing judgment. The judgment time period can be
changed freely using the parameter No. 50 “Load Output Judgment Time Period”.
This signal is continued until the next movement command is received.
x
Set the pressing speed using the parameter No. 34 “Pressing Speed”.
When the machine is delivered, it has been individually set depending on the actuator characteristics.
Set an appropriate speed considering the work material and shape.
x
Set the parameter No. 50 “Load Output Judgment Time Period”.
x
Set the parameter No. 51 “Torque Inspected Range” to “0” (enabled).
x
Set the threshold inspected width using the PLC's Zone Value + Register or Zone Value - Register.
x
Set the threshold using the PLC's Load Current Threshold Register.
x
Set the positioning width using the PLC's Positioning Width Register.
Set it a bit longer from the backmost position considering the mechanical dispersion of the work.
Refer to the instruction manual for the controller for more information.
Warning: x If the actuator pushes against the work before the target position, it is regarded as a
servo-motor error.
Take care of the positional relationship between the target position and the work position.
x
The actuator continues to push the work with the pressing current at the stop time
decided with the current limit value. It is not the stop condition, so take the greatest care
to deal with it.
PCON Dedicated Function
PLC Input Signal
Speed
Positioning Width (Max. Pressing Level)
Travel Distance
Target Position
Position where this signal is turned ON
when the command torque exceeds the threshold
within the torque inspected width range
Position where the actuator is pushed
against the work and the pressing completion is
judged so the positioning completion signal is turned "ON"
inspected width
range