Basic Documentation

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Siemens Rotary actuators with spring return GCA…1 CE1Z4613en
Building Technologies Wiring notes 2017-05-26
The diagram shows the currents in the connecting lines for one actuator.
0 V
G0
AC 24 V
G
Y1
Y2
GCA13..1
1
2
6
7
M
0.3 A
4613G07en
AC 0.3 A
0.2 A
DC 24 V
DC 0.2 A
AC/DC 24 V
AC/DC 24 V
Determining the line lengths for two actuators GCA13..1 and AC 24 V supply.
Only the currents in line 1 (G) and 2 (G0) determine the line sizing.
Max. permissible voltage drop = 4 % per line (total 8 %).
AC 24 V: Line 1 (G), 2 (G0)
DC 24 V: Line 1 (G), 2 (G0)
∂ Consumption = 2 x 7 VA = 14 VA
∂ Line current = 2 x 0.3 A = 0.6 A
∂ Max. permissible single line length:
141 m at 1.5 mm
2
line cross-section
∂ Consumption = 2 x 4 W = 8 W
∂ Line current = 2 x 0.2 A = 0.4 A
∂ Max. permissible single line length:
246 m at 1.5 mm
2
line cross-section
6.4 Actuator wiring (modulating)
Differentiate between AC 24 V and DC 24 V to determine the permissible line lengths
between the positioning module and the actuator. The section below discusses the
effect of G0 line sizing.
6.4.1 AC 24 V supply
With AC supply, the G0 line has a AC 0.3 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.
Operating voltage
Power
consumption
Perm. voltage drop for line
1 (G), 2 (G0)
AC 24 V 7 VA 4 % of AC 24 V
P&I diagram:
Conduction currents
Example:
Parallel connection of
two actuators
Modulating actuators
GCA16..1
Power consumption and
perm. voltage drop with
one actuator