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Actuator Wiring (Modulating) - Siemens OpenAir GEB 1 Series Technical Basics

Actuators without spring return
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Modulating actuators
GEB16..1
Power consumption and
perm. voltage drop with
one actuator
P&I diagram:
Conduction currents
Example:
Parallel connection of four
actuators
24/44
Siemens
Building Technologies
6.3

Actuator wiring (modulating)

With AC supply, the G0 line has a AC 0.23 A supply current and a DC 0.1 mA
positioning signal current (from Y = DC 0...10 V). The AC voltage drop on the G0 line
does not impact the positioning signal Y.
Power
Operating voltage
consumption
AC 24 V
5.5 VA
The diagram shows the currents in the connecting lines for one actuator.
AC 0,23 A
AC 24 V
1
AC 0,23 A
0 V
2
DC 0...10 V
8
9
Determining the line lengths for four actuators GEB16..1 and AC 24 V supply. Only the
AC currents in line 1 (G) and 2 (G0) determine the line sizing.
Max. permissible voltage drop = 4% per line.
Consumption = 4 x 5.5 VA = 22 VA.
Line current = 4 x 0.23 A = 0.92 A.
Permissible single line length for G, G0:
2
90 m at 1.5 mm
line cross section, or
2
149 m at 2.5 mm
line cross section.
Actuators without spring return GEB...1
Perm. voltage drop for line
1 (G)2 (G0)
4 % of AC 24 V
GEB16...
G
G0
M
Y
U
(DC 0...10 V)
CM2Z4621en
2017-05-26

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