Basic Documentation

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Siemens Rotary actuators with spring return GCA…1 CE1Z4613en
Building Technologies Spring return actuators 2017-05-26
2.2 Type summary
The following table shows the options for the actuator types.
GCA...
121.1E 126.1E 321.1E 326.1E 131.1E 135.1E 161.1E 163.1E 164.1E 166.1E 161.1E/MO
Control type
Two-position control
Three-
position
control
Modulating control
Modbus RTU
Standard version
Operating voltage
AC 24 V
DC 24…48 V
X X X X X X X X
AC 24 V
DC 24 V
X
Operating voltage
AC 230 V
X X
Positioning signal Y
X X
DC 0...10 V
DC 0...35 V with characteristic
function Uo, ΧU
X X
Modbus RTU X
Position indicator
U = DC 0...10 V
X X X X
Modbus RTU X
Feedback potentiometer 1kς X
Self-adaptation of
rotary angle range
X
Auxiliary switches (two) X X X X X
Powerpack (two actuators,
tandem-mounted)
X X X X X X X X X X
For functional enhancements of the actuators, the following accessories are available:
External Auxiliary Switch (1 Switch) ASC77.1
External Auxiliary Switch (2 Switches) ASC77.2
Rotary/linear set for duct mounting ASK71.1
Rotary/linear set for frame mounting ASK71.2
Rotary/linear set with lever ASK71.3
Rotary/linear set with lever and mounting plate ASK71.4
Universal lever ASK71.9
Bracket for powerpack ASK73.1
Self-aligning bracket for powerpack ASK73.2
Special shaft adapter ASK74.1
Weather shield for rotary actuator ASK75.1
Data sheet for accessories and spare parts N4699
Accessories, spare parts