Basic Documentation

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Siemens Rotary actuators without spring return GBB/GIB..1 CE1Z4626en
Smart Infrastructure Technical design 2019-11-28
3 Technical design
This chapter discusses the following topics:
· Drive motor
· Adjustable auxiliary switches
· Adjustable characteristic function (positioning signal, DC 0...35 V)
· Control characteristics by including the neutral zone
3.1 Drive motor
A synchronous motor enables accurate speed control. The magnetic clutch serves as a
torque supervision to protect both actuator and damper.
3.2 Angular range and mechanical limitation
The illustration below shows the relationship between the inner and outer mechanical
limitation of the angular range.
Gear train angular range
Inner mechanical limits
5°0° 20° 40° 60° 80°
5°
95°
90°2,5°0°
0° 95°
97.5°
-2,5°
40° 95°
D = 62.5°
x 5°= 7 5°· ·
x >1
x = 0
D = 95°-x 5° +2.5°
D = 95°
·
0°
4621D03
1
2
Outer mechanical limits
Adapter setting range
Actuator angular range
(without rotary angle limitation)
 Gear train presetting
(factory setting)
Pointer
Angular scale
Angular limitation
Adapter setting
Example: x = 7
x = number of steps (5°)
 incl. gear train presetting
Introduction
Drive moto
r
Mechanical functions