IAI America PCON-CY User Manual

Page 54

5. Operation Using I/O Signals

Detection Output for Each Position (LS0, LS1, LS2)

Just like the LS signals of an air cylinder, each signal turns ON when the current actuator position is inside the positioning
band set for the applicable target position.
(Note) Even if the servo turns off or an emergency stop is actuated while the actuator is standing still at the target

position, the signal will remain ON as long as the actuator position is inside the positioning band.

Output signal

Position detected

Remarks

LS0 Rear

end

The detection position is defined in the “Position” and “Positioning band” fields
under Position No. 0.

LS1 Front

end

The detection position is defined in the “Position” and “Positioning band” fields
under Position No. 1.

LS2 Intermediate

point

The detection position is defined in the “Position” and “Positioning band” fields
under Position No. 2.

Ready Output (SV)

This signal is a monitor signal indicating that the servo is on and the motor can be driven.
While this signal is ON, the SV LED (green) on the front face of the enclosure is lit.
The SV LED (green) blinks during the auto servo-off mode.
Use this signal as a condition for starting a move command on the PLC side.

Homing Complete Output (HEND)

This signal is OFF immediately after the power is turned on.
To establish the initial coordinate, only a rear end move command is accepted after power on. Once a rear end move
command has been input, the actuator performs homing and then moves to the rear end.
This signal will turn ON after the homing is completed.
Once turned ON, this signal will remain ON until the input power is cut off.
Use this signal as an interlock signal before homing.

(Reference) Acceptance of each move command before homing is explained below:

[1] A rear end move command is accepted.
[2] An intermediate point move command is not accepted.
[3] A front end move command is accepted, but once the actuator moves forward at the homing speed and

contacts the mechanical end, the actuator will stop and a front end detection output (LS1) will turn ON.
In this case, the LS1 signal should be recognized as a tentative signal.
Movement to the front end is permitted to accommodate a situation where there is an obstacle between
the actuator and the rear end.

Alarm Output (*ALM)

This signal remains ON while the actuator is normal, and turns OFF if an alarm has occurred.
Cause the PLC to monitor the OFF state of this signal and provide an appropriate safety measure for the entire system.
Check the nature of each alarm by connecting a PC/teaching pendant, and remove the cause. For details of alarms, refer
to Chapter 7, “Troubleshooting.”