IAI America REXT - Manual (Page 115)


Part 1 Specification
Chapter 3 Gateway R unit
Part  Specification
() Load output judgment (LOAD) PLC Input Signal Dedicated Function for RPCON
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. 0 “Load Output Judgment Time Period”.
This signal is continued until the next movement command is received.
Velocity
Movement
distance
Target position
Check range
Positioning width (Max. pressing level)
Position where the actuator is pushed against
the work and the pressing completion is judged
so the positioning completion signal is turned "ON"
Position where this signal is turned ON
when the command torque exceeds
the threshold within the torque inspected
width range
• Set the pressing speed using the parameter No.  “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.
• Set the parameter No. 0 “Load Output Judgment Time Period”.
• Set the parameter No.  “Torque Inspected Range” to “0” (enabled).
• Set the threshold inspected width using the PLC's Zone Boarder Value + Register or Zone Boarder Value -
Register.
• Set the threshold using the PLC's Load Current Threshold Register.
• 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.
Warning: • 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.
• 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.
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