Data Sheet for Product

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Siemens Air damper actuators GMA...1, rotary version with spring return CM2N4614en
Smart Infrastructure 2021-09-08
Type summary
GMA...
121.1E 126.1E 321.1E 326.1E 131.1E 132.1E
1)
136.1E 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 X
Operating voltage
AC 230 V
X X
Positioning signal Y
DC 0...10 V
DC 0...35 V with
characteristic function Uo, ∆U
X X
X X
Position indicator
U = DC 0...10 V
X X X X
Feedback potentiometer 1kΩ
X
Auxiliary switches (two) X X X X X
Powerpack (2 actuators)
X X X X X X X
1)
While stocks last
Functions
Type GMA12..1 / GMA32..1 GMA13..1 GMA16..1
Control type
Two-position control
Three-position control
Modulating control
Positioning signal with adjustable
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
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 may result in a double torque.
Is not permitted
Rotary angle limitation The rotational angle of the shaft adapter can be limited mechanically at increments of 5°.
Ordering
The potentiometer cannot be added in the field. For this reason, order the type that
includes this option.
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. external auxiliary
switch, linear/rotary sets and weather protection cover; see data sheet N4697.
Disposal
The document on technical basics and the environmental declaration provide
information on environmental compatibility and disposal of this device.
Note
Delivery
Accessories, spare
parts