6] operation ready and auxiliary signals – IAI America ERC3 User Manual

Page 178

Chapter 4 Operation

4.2 Operation in Positioner Mode

4.2.2 Operation in Positioner Mode 1

168

[6] Operation Ready and Auxiliary Signals

(1) Home Return (HOME, HEND, PEND)

Input

Output

PIO signal

HOME

HEND

PEND

Pattern 0

{

Pattern 1

(Note1)

Pattern 2

(Note1)

{

: Available, u: Unavailable

(Note 1) For Patterns 1 and 2, a home-return operation with HOME Signal cannot be performed.

•

Refer to 4.2.2 [8] Direct Position Specification (3-point type) = PIO Pattern 1 for

how to home return for Pattern 1

•

Refer to 4.2.2 [7] Operation with the Position No. Input = Operations of PIO Patterns 0 and 2 for

how to home return for Pattern 2

The HOME signal is intended for automatic home return. The HOME signal is caught at the

rising edge (ON edge) to start the home return. At completion of the home return, home return

completion signal HEND is turned ON. The home-return complete signal HEND is kept ON

unless the memory of origin point is lost for a reason such as alarm. During the home-return

operation, the positioning complete signal PEND is OFF.

Homing Completion Signal

HEND

(Controller→PLC)

Positioning Completion Signal

PEND

(Controller→PLC)

Home Return Signal

HOME

(PLC→Controller)

[Operation of Actuator]

1) With the HOME signal being ON, the actuator moves toward the mechanical end at the

home return speed. The movement speed is 20mm/s.

2) The actuator is turned at the mechanical end and stopped at the home position. The

moving distance is the value set by Parameter No.22 “Home return offset level”.

Caution: In the home reverse specification, the actuator moves in the reverse direction.

Make sure to refer to Chapter 6, 6.3.1 [2] (15) when a change to Parameter

No.22 “Home return offset level” is required.

Mechanical end

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