User Manual

15/44
Siem ens Technische Grundlagen: Drehantriebe GEB...1 CM2Z4621en
Building Technologies 2017-05-26
100
0
Χ
U (16 V)
Y [V]
Y
S
[%]
4637D02
2 1810
Umin Umax
50
Uo
Max. positioning range Ysmax = 100 % (95°)
Span Ys = 50 % (47.5°)
Offset Uo = 2 V
Span ΧU = 16 V
Effective span
ΧUw = Umax – Umin
= 10 V - 2 V = 8 V
3.5 Neutral zone
For modulating control actuators, note the control characteristic for the selected switch-
on point of the setpoint. The diagram shows the setting characteristics by including the
neutral zone for range DC 0...10 V.
The diagram shows the setting characteristics by including the neutral zone. The values
for the neutral zone listed in the diagram apply to DC 0...10 V (without characteristic
function).
-E
E
+E
Rotary direction
Hysteresis
H = 70 mV
Neutral zone NZ = 200 mV
Hysteresis
H = 70 mV
Counter- clockwise
Clockwise
90°
⇓
0°
0°
⇓
90°
4614D03en
The diagram shows the relationship between the differential voltage E = Y – U
(difference between setpoint Y and actual value U) and the rotary direction, including
hysteresis and neutral zone.
For DC 0...35 V (with characteristic function) the following values apply:
Neutral zone NZ = 2 % of span ΧU.
Hysteresis H = 0.7 % of span ΧU.
Characteristic function for
the example
Actuators
GEB16...1 (DC 0...10 V)
Note
Actuators
GEB163.1, 164.1
(DC 0...35 V)