IAI America ERC3 - Manual (Page 278)

Chapter 4 Operation
4.4 Operation in MEC Mode 1 and 2 (Operation with PLC)
268
(3) Pressing (ST0, PE0, PE1)
The actuator performs the pressing operation towards the end point when Movement Signal 1
ST0 is ON. The end point positioning complete signal PE1 turns ON after the pressing is
completed.
When having a pressing (pulling) to the start point from the end position, turn OFF Movement
Signal 1 ST0. The start point positioning complete signal PE0 will turn ON when the pressing
(pulling) is complete.
In either case, even when the pressing is missed, each positioning complete signal PE0 or
PE1 would turn ON.
Shown below is a time chart for when pressing to the end point.
Caution: Even when the pressing is missed, each positioning complete signal will turn
ON. If a detection of miss-pressing is required, set a large pressing band and
judge with the timer.
Move signal 1 ST0
Actuator operation
End Point Positioning Completion
PE1
Start Point Positioning Completion
PE0
Push width Push width
Pressing complete End point
If operation missed
[7] Operation when Operation Pattern is “3-Point Stop (3-Point Positioning)”
(1) Home Return (ST0, LS0, LS1, PE0, PE1)
If Movement Signal 1 ST0 is ON, a stop (positioning) is made at the start point after a
home-return operation. If a value other than the origin (= 0) is input, the positioning is
conducted at the specified point after the home-return.
The end point movement signal 2 ST1 is invalid until the home-return complete.
Move signal 1 ST0
Detection of start position LS0 (Note 1)
Actuator operation
Reverse at
mechanical end
Home position Start position
Note 1 If “Use Pressing Function” is selected in the initial setting, this signal becomes
the start point positioning complete signal PE0.