IAI America PCON-CF - Manual (Page 99)

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6. Data Entry
6.2.11 Overview of 3-point Type
This type provides a control method adjusted to that of an air cylinder by assuming that the controller is used as
an air cylinder.
The key differences between this controller and an air cylinder are summarized in the table below. Program
appropriate controls by referring to this table.
* Do not use this mode for push & hold operation.
Item Air cylinder PCON
Drive method Air pressure supplied
via electromagnetic
valve control
Ball-screw or timing-belt drive using a pulse motor
Target
position
setting Mechanical stopper
(including shock
absorber) Desired coordinates are entered in the [Position] field of the
position table.
Coordinates can be entered from the PC/teaching pendant
using the keyboard/keys, or the actuator can be moved to the
desired position to read the achieved coordinates directly.
Example) 400-mm stroke
Position No. Position
0 5 (mm) Rear end
1 400 (mm) Front end
2 200 (mm) Intermediate point
Target
position
detection An external detection
sensor, such as a reed
switch, is installed. Determined based on the internal coordinates provided by the
position information from the position detector (encoder).
Accordingly, external detection sensor is not required.
Speed setting Adjusted by a speed
controller.
A desired feed speed is entered in the [Speed] field of the
position table (unit: mm/sec).
Note that the rated speed is automatically set as the initial
value.
Acceleration/
deceleration
setting Determined in
accordance with the
load, supplied air
volume, as well as the
performance of the
speed controller and
electromagnetic valve. Desired acceleration/deceleration are entered in the
[Acceleration] and [Deceleration] fields of the position table
(minimum setting unit: 0.01 G).
Reference: 1 G = Gravitational acceleration
Note that the rated acceleration/deceleration is automatically set
as the initial value.
Since the acceleration/deceleration can be set in fine steps, a
gradual acceleration/deceleration curve can be programmed.
Setting a larger value makes the curve steeper, while setting a
smaller value makes the curb more gradual.
0.3G 0.1G
Acceleration Deceleration
Starting position
of movement Ending position