Data Sheet for Product

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Siemens Air damper actuators GCA...1, Rotary version with spring return CM2N4613E
Smart Infrastructure 2021-09-08
Type summary
GCA... 121.1E 126.1E 321.1E 326.1E 131.1E 135.1E 161.1E 163.1E 164.1E 166.1E
Control type Two-position control
Three-position
control
Modulating control
Operating voltage
AC 24 V / DC 24…48 V
X X X X X X X X
Operating voltage
AC 230 V
X X
Positioning signal Y
DC 0...10 V X X
DC 0...35 V with characteristic function
Uo, ∆U
X X
Position indicator
U = DC 0...10 V
X X X X
Feedback potentiometer 1 kΩ
X
Auxiliary switches (two) X X X X X
Powerpack (2 actuators) X X X X X X X X X X
Functions
Type GCA12..1 / GCA32..1 GCA13..1 GCA16..1
Control type Two-position control Three-position control Modulating control
Positioning signal with adjust-
able characteristic function
DC 0...35 V at
Offset Uo = 0...5 V
Span ∆U = 2...30 V
Rotary direction
Clockwise or counter-clockwise movement depends on the mounting position of the damper shaft…
and on the type of control
Spring return function
On power failure or when the operating voltage is switched off,
the spring return moves the actuator to its mechanical zero position.
Position indication:
Mechanical
Rotary angle position indication by using a position indicator.
Position indication:
Electrical
The feedback potentiometer
can be connected to external
voltage to indicate the position.
Output voltage U = DC 0...10 V is generated
proportional to the rotary angle.
Auxiliary switch
The switching points for auxiliary switches A and B can be set independent of each
other in increments of 5° within 5° to 90°.
Powerpack (two actuators,
tandem-mounted)
Mounting two of the same actuator types on the same
damper shaft results in a double torque
(with accessories ASK73.1).
Mounting two of the same actuator types on the
same damper shaft results in a double torque
(with accessories ASK73.2).
Rotary angle limitation The rotational angle of the shaft adapter can be limited mechanically at increments of 5°.
Ordering
Potentiometer cannot be added in the field. For this reason, order the type that in-
cludes the required options.
Individual parts such as position indicator and other mounting materials for the actuator
are not mounted on delivery.
Accessories to functionally extend the actuators are available, e.g., linear/rotary sets,
auxiliary switches (1 or 2 switches) and weather protection cover; see data sheet
N4699.
Note
Delivery
Accessories, spare
parts