Mechanical Design - Siemens OpenAir GBB Series Technical Basics

Brief description
Housing
Gear train
Self-centering shaft
adapter
Manual adjustment
Mounting bracket
Electrical connection
Type-specific elements
Auxiliary switch
Potentiometer for offset
and span
Rotary direction switch
(only for GBB/GIB16..1)
Feedback potentiometer
for position indication
Push button and LED
at external Interface
Siemens
Smart Infrastructure
2.5

Mechanical design

The electromotoric GBB/GIB..1 actuators are available for three-position and
modulating control, GIB161.1E/MO electronic actuators are available for networked
control. The maximum torque is 20/35 Nm. The actuator's connecting cables are
prewired.
Robust, light-weight full metal housing made of die-cast aluminium. The housing
guarantees a long actuator life even under harsh environmental conditions.
Maintenance-free and noise-free gear train with stall and overload protection for the life
of the actuator.
This mounting type allows for securing the actuator to shafts with various diameters
and in various shapes (square, round) using just one screw.
Insert the shaft adapter from either side into the opening for the shaft adapter.
For short shafts, the shaft adapter is on the air duct side.
The shaft adapter coupling and the adapter holding are coupled by means of double-
sided gearing.
When no voltage is supplied, you can manually adjust the actuator or the air damper by
pressing the gear train disengagement button.
A bolted perforated metal strip is used to attach the actuator.
All actuators have prewired 0.9 m long connecting cables.
The actuators can be delivered as a type-specific variant having the following elements:
For auxiliary functions, you can adjust auxiliary switches A and B on the actuator front.
Both potentiometers for the characteristic functions Uo and
front.
The rotary direction switch exists only in modulating actuators and is accessible from
the front (see section 2.6 Setting and operating elements).
The potentiometer is integrated and can be connected by means of a cable.
The HMI of networked types consists of a push button and an LED to allow certain
interactions with the actuator or to provide visible feedback from the actuator.
Rotary actuators without spring return GBB/GIB..1
Non-spring return actuators
D
U are accessible on the
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CE1Z4626en
2019-11-28