The following characteristic is set by default and can be adapted to the application
via the parameters mentioned.
Point 1:
Hz 0.00Hz 50.000.00%Y1 =⋅=
Point 2:
Hz 0.005Hz 50.000.00%10Y2 =⋅=
The freely configurable characteristic enables setting a tolerance at the ends as well
as a reversal of the direction of rotation.
The following example shows the inverse reference value specification with additional
reversal of the direction of rotation. This is often used in pressure control systems.
Point 1:
Hz 50.00Hz 50.000.00%10Y1 =⋅=
Point 2:
Hz 0.004Hz 50.000.00%8Y2 −=⋅−=
The reversal of the direction of rotation is
affected in this example at an analog
input signal of 5.5V.
The definition of the analog input characteristic can be calculated via the two-point
form of the line equation. The speed Y of the drive is controlled ac
cording to the
analog control signal X.
( )
Y1X1X
X1-X2
Y1-Y2
Y +−⋅=
pos. maximum value
neg. maximum value
(X1=2%/Y1=0%)
0 V
(0 mA)
50 Hz
+10 V
(+20 mA)
9.8 V
0.2 V
(X2=98%/Y2=100%)
Y
X
pos. maximum value
(X1=2%/Y1=100%)
0 V
(0 mA)
5.5 V
9.8 V0.2 V
+10 V
(+20 mA)
(X2=98%/Y2=-80%)
Y
X
-40 Hz
50 Hz
06/13 Operating Instructions ACU 173