IAI America ERC3 - 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 u (Note1) u u
Pattern 2 u (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 <Solenoid valve> 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
Home
1)
2)