Agromatic ESR-NK Series, Инструкция по установке и эксплуатации, Страница: 73 / 98

6 Electronic position controller ESR-NK (option) 6.3 Special characteristic curve for series VK
Actuators NK and VK, Position Controller ESR-NK 67
Switching the operating voltage on when a button is pressed
Mode Button Function Setpoint Yellow
LED
Green
LED Blue
LED Red
LED
Manu SET + R
Setting the
setpoint range
0 D 20mA
and/or
0 D 10V
3x ,
then
Manu SET + L
Setting the
setpoint range
4 D 20mA
and/or
2 D 10V
3x ,
then
Manu
SET
Detection of
the rotational
direction:
actuator briefly
moves clock-
wise.
First ,
then
First ,
then 3x ,
then
Key to symbols: no effect, on, off, slowly flashing
In Auto = automatic mode, buttons L, SET and R are always functionless.
6.3 Special characteristic curve for series VK
For actuators series VK, the rotation of the actuator is transformed into a lin-
ear movement using an eccentric disk. For this reason, the ratio between the
rotational angle of the output shaft and the position of the slider (see Fig. 3.2)
is non-linear.
If an actuator series VK is provided with an integrated position controller, then
the position controller is factory-programmed with a specific characteristic
curve for linearization. The position controller uses this special characteristic
curve to transform the setpoint signal proportionally to the corresponding po-
sition of the slider.
Important information!
The special characteristic curve only influences the position of the slider.
It has no effect on the linear positioning speed.
The linear positioning speed is the highest in the center of the posi-
tioning range (90°) and decreases towards the end positions (0°
and/or 180°).