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Technical Design; Motor Technology; Rotary Range And Mechanical Limitation - Siemens OpenAir GEB 1 Series Technical Basics

Actuators without spring return
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Introduction

Motor technology

Mechanical functions
Gear train rotary range
Inner mechanical limits
Outer mechanical limits
Adapter setting range
Actuator rotary range
(without rotary angle limitation)
Gear train presetting
(factory setting)
Pointer
Rotary angle scale
Rotary angle limitation
Adapter setting
Example: x = 7
x = number of steps (5°)
incl. gear train presetting
12/44
Siemens
Building Technologies
3

Technical design

This chapter discusses the following topics:
Motor technology.
Adjustable auxiliary switches.
Adjustable characteristic function (positioning signal, DC 0...35 V).
Control characteristics by including the neutral zone
3.1
Motor technology
A synchronous motor enables accurate speed control. The magnetic coupling serves
as a torque supervision to protect both actuator and dampers.
3.2

Rotary range and mechanical limitation

The illustration below shows the relationship between the inner and outer mechanical
limitation of the rotary range.
-2,5°
Actuators without spring return GEB...1
20°
40°
1
2,5°
40°
x 5°= 7 5°
·
·
x >1
x = 0
60°
80°
Χ = 62.5°
2
Χ = 95°-x 5° +2.5°
·
Χ = 95°
CM2Z4621en
95°
97.5°
95°
90°
95°
2017-05-26

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