Page 28 - Keubler Motion Sensors

Basics

Encoders Absolute encoders

The mechanical Sendix multiturn stage • Multiturn gear with purely optical scanning tech-
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with gear nology. Completely resistant to magnetic fields.
• First stage with double bearing layer.
• Special materials ensure temperature stability
and long service life.
• Through hollow shaft diameter up to 14 mm
- up to 15 mm as blind hollow shaft.
• Specially developed gear teeth allow for very high
rotational speeds and eliminate wear.

The patented electronic Sendix multiturn Firstly all the single and multiturn functions of the
stage with Intelligent Scan Technology™ encoder are integrated on an Opto ASIC.
With multiturn versions the optical sensor
technology can achieve a resolution of up to 41 bits.
Furthermore, the new Intelligent Scan Technology
ensures 100% magnetic insensitivity.

Mechanical or electronic gears? Absolute singleturn and multiturn encoders have Today all manner of multiturn encoders are available
established themselves as the standard method for in a variety of designs.
measuring linear displacement or angular position.
As a rule the manufacturers offer either mechanical
With absolute encoders a reference trip is no longer gears for ‘counting turns’, or swear by electronic
needed after system start-up or a power-down. counters with electronic data storage. They are
Multiturn encoders in particular are now being critical of any other technology.
employed, where previously incremental encoders The fact is however: it is not a case of which is
had predominated, for example with geared motors better or worse; each technology has its advantages
or in lifts. and drawbacks.
Only the actual application can decide.

Intelligent Sensing Technology A new operating principle, based on a non-contact Advantages
multiturn stage, eliminates the system drawbacks • High operational safety
linked with the encoders with mechanical gear or
• Compensation of high EMC disturbances thanks
with the usual electronic gear technology.
to logical filters and a novel operating principle
of the system
• Free of wear

26 www.kuebler.com © Fritz Kübler GmbH, subject to errors and changes. 02/2015