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Siem ens GMA..1 actuators with spring return CM2Z4614en
Building Technologies 2018-01-11
2.3 Description of functions
The functions are listed in a table and are assigned to the respective control types.
Type
GMA12..1 / GMA32..1 GMA13..1 GMA16..1 GMA161.1E/MO
Control type Two-position control Three-position control Modulating control Modbus RTU
Positioning signal with adjustable
characteristic function
- -
Y = DC 0...35 V with
offset Uo = 0...5 V
and
span ΧU = 2...30 V
-
Rotary movement,
rotary direction
Clockwise or counter-clockwise movement depends on the mounting position of the damper shaft.
When operating voltage
is supplied, the actuator
goes from 0° ⇑ 90°.
When operating voltage
is supplied and
depending on the
control, the actuator
goes
∂ from 0°⇑ 90° (open)
∂ from 90°⇑ 0° (close)
When control is
interrupted, the actuator
remains in the
respective position.
-
On the setting of the
respective parameter
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 given by the position indicator.
Position indication: Electronic
-
Connecting the
feedback potentiometer
to an external voltage
source results in voltage
supply proportional to
the rotary angle.
Position indicator:
Output voltage U =
DC 0...10 V is
generated
proportional to the
rotary angle.
By Modbus register
value
Self-adaptation of rotary angle
range
-
When self-adaption is
active, the actuator
automatically detects
mechanical end of the
rotary angle range.
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 actuators of the same type on the
same damper shaft doubles the torque.
Not permissible
Response on damper blocking The actuator is equipped with an automatic switch-off mechanism.
Manual adjustment
When no voltage is applied, you can turn the actuator to any rotary angle position (using a hex
wrench) and lock by using a screwdriver, or the adjustment tool.
∂ The actuator returns to the zero position on mechanical unlocking by means of a hex wrench (turn in
"90°" – open" direction) or by shortly supplying operating voltage.
Rotary angle limitation
The rotary angle range can be limited mechanically
by inserting the shaft adapter in 5° increments.
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