Lenze EVF9383 - Manual (Page 183)

Application examples
Diameter detection with a distance sensor
3−13
l
EDSVF9383V−EXT EN 2.0
(100 %)
AIN2-OUT

U U
D
D
Dmin Dmax
min
max
Fig. 3−8 Transfer characteristic of X6/3,4 when using a distance sensor
D
max
D
min
Maximum reel diameter
Minimum reel diameter V
Dmax
V
Dmin

Signal voltage of the sensor with maximum reel diameter
Signal voltage of the sensor with minimum reel diameter
Sensor signal
With maximum reel diameter, the signal at AIN2−OUT must be 100 %. This is why the FB AIN2 must
receive the inverse transfer characteristic shown in Fig. 3−8.
The following formulas are used to calculate the values for gain (C0027/2) and offset (C0026/2):
C0027/2
+ 10 V
D
max
@
D
max
*D
min
U
Dmax
*U
Dmin
C0026/2
+ C0027/2 @
U
Dmax
10 V
* 100 %
Example
V
Dmin
= 8 V, D
min
= 100 mm
V
Dmax
= 2 V, D
max
= 500 mm
Enter the following values under C0027/2 and C0026/2:
C0027/2 + 10 V
500 mm
@ 500 mm*100 mm
2 V *8 V
+ *133.33 %
C0026/2 + −133.33 % @
2 V
10 V
* 100 % + −126.67 %
Tip!
For more detailed information on parameter setting, please see the application example for the basic
configuration C0005 = 9000. (
¶ 3−14)