15/44
Siemens
GMA..1 actuators with spring return
CM2Z4614en
Building Technologies
2018-01-11
100
0
Χ
U (16 V)
Y [V]
Y
S
[%]
4
63
7D
0
2
2
18
10
U
min
U
max
50
U
o
Max. positioning range Ysmax = 100 % (95°)
Span Ys =
50 % (47.5°)
Offset Uo =
2 V
Span
Χ
U =
16 V
Effective span
Χ
Uw = 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. 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
C
o
un
te
r-
cl
o
ck
w
is
e
C
lo
ck
w
is
e
9
0°
⇓
0°
0°
⇓
90
°
4
61
4D
0
3e
n
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
Χ
U.
Hysteresis H = 0.7 % of span
Χ
U.
Characteristic function for
the above example
Actuators
GMA161.1, 166.1
(DC 0...10 V)
Actuators
GMA163.1, 164.1
(DC 0...35 V)
