IAI America ACON-CY - Manual (Page 63)

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5. Operation Using I/O Signals
Positioning
band [mm]
Position
[mm]
Speed
[mm/s]
Acceleration
[G]
Deceleration
[G]
Push
[%]
Rear end
Front end
Intermediate point
Comment
5.2.5 Positioning Operation
This section explains how to move the actuator from the rear end to the front end, by using an actuator with a
400-mm stroke as an example.
Although the actuator is not stopped at the intermediate point in this example, you can increase the positioning
band and use the intermediate point detection output signal (LS2) just like the zone output signal.
Example of position table
Operation timings
PLC processing 1: The rear end move command signal (ST0) and intermediate point move command
signal (ST2) turn OFF, and the front end move command signal (ST1) turns ON.
Operation: [1] The actuator starts moving toward the front end.
[2] When the actuator passes the position corresponding to 5.1 mm, the rear end
detection output (LS0) turns OFF.
[3] When the actuator reaches the position corresponding to 150 mm, the
intermediate point detection output (LS2) turns ON. The LS2 turns OFF once the
actuator passes the position corresponding to 250 mm.
PLC processing 2: If necessary, use the intermediate point detection output (LS2) as a trigger signal for
peripheral equipment.
[4] The actuator starts decelerating after reaching the position corresponding approx.
365 mm.
[5] When the actuator passes the position corresponding to 379.9 mm, the front end
detection output (LS1) turns ON.
[6] The actuator stops after reaching the position corresponding to 380 mm.
PLC processing 3: When the front end detection output (LS1) turns ON, the sequence processing is
performed at the front end. Once the sequence processing is completed, the front end
move command signal (ST1) turns OFF.
Caution: Design a ladder sequence circuit where only one move command signal turns ON at a given time.
If two or more signals are input simultaneously, the signals will be processed according to the set
priorities.
Priorities: [1] Rear end, [2] front end, [3] intermediate point
Front end move
command input (ST1)
Rear end detection
output (LS0)
Intermediate point
detection output (LS2)
Front end detection
output (LS1)
Speed
Rear end
5 mm
Intermediate point
200 mm
Front end
380 mm
Time
Sequence is
performed at
the front end