U Page 39
Digital controller RK 4004
In this example a maximum correction path of 15 mm or 20 mm was
set with a proportional range of 2 mm.
Given a correction path of 15 mm (20 mm) the correction path is ap-
prox. 11 mm (15 mm) given a control deviation of 1.5 mm.
The values may also be calculated arithmetically:
Amplification (G) = parameter .4.5. / parameter .1.3.
Correction path = control deviation * amplification (G)
Example 1:
Example 2:
G = 15/2 = 7.5
G = 20/2 = 10.0
VK = 1.5 mm * 7.5
VK = 1.5 mm * 10.0
VK = 11.25 mm
VK = 15.0 mm
Correction path
.4.5. prop stroke ±
15 mm
20 mm
Proportional range
.1.3. prop range ±
2,0
Control deviation of
1.5 mm
Set position
(Sensor measuring
range center )
established cor-
rection posi-
tioning path de-
pending on the
correction posi-
tioning path
Correction path
Control deviation
15 mm
11 mm
