Sensors & Transducers


Contactless encoders offer long service

October 2003 Sensors & Transducers

In multiturn shaft encoders, the number of rotations is normally detected with a gear unit. However, in everyday industrial life this often proves to be a weak point. Like any mechanical system, it is also subject to wear and the abrasion can soil the code disk.

IVO uses a different method. The mechanical gear unit is replaced with the 'touchless encoder' principle patented in 1992 whereby the rotations are detected electronically using two magnetically triggered sensors offset by 90°. The number of rotations are evaluated and stored in an ASIC, which is buffered with a lithium battery. As a result, the values are retained even in de-energised state. The service life of the lithium battery is over 20 years; its charge state is available at all times at a diagnostic output and can, for example, be output via a fieldbus, making this system more reliable than the mechanical unit, as a failure can now be detected at an early stage.

Thanks to this design principle, the multiturn encoders adapt to virtually all fieldbus systems commonly used today. IVO's Magtivo, Multivo and Activo encoders can easily be combined with different bus covers integrating the corresponding fieldbus electronics. For system and machine manufacturers, this increases flexibility and stocks are reduced, as the desired bus cover can simply be mounted on the basic sensor. Combinations include CAN, CANopen, DeviceNet, Profibus-DP, SSI and Optic fibre bus. IVO is distributed by Timecount.

For more information contact Jos Laurencik, Timecount, 011 882 3105, [email protected]



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Distance sensor for confined spaces
ifm - South Africa Sensors & Transducers
The O6D100 from ifm has been designed as a powerful all-rounder for typical applications in object detection, distance measurement and positioning.

Read more...
Optimise sludge treatment and reduce operational costs
Endress+Hauser South Africa Sensors & Transducers
Endress+Hauser’s inline measuring devices, the Proline Teqwave MW 300 and the Proline Teqwave MW 500, determine the total solids content of wastewater directly through microwave transmission.

Read more...
Inclination sensors for motion control
ifm - South Africa Sensors & Transducers Motion Control & Drives
The JBC dynamic inclination sensor from ifm offers accurate angle measurement in the most demanding conditions, filtering out motion disturbances such as vibrations, shocks and vehicle dynamics to deliver reliable inclination values via IO-Link or programmable switch outputs.

Read more...
Fully integrated standalone thunderstorm warning system
Senseca Sensors & Transducers Analytical Instrumentation & Environmental Monitoring
Senseca South Africa has introduced its BTD-1 fully integrated, standalone thunderstorm warning system, which detects lightning by monitoring the background quasi-electrostatic field. The system can generate alerts before the first lightning strike, with a detection raterange of up to 83 km.

Read more...
Technology and education are critical to advancing safety in the mining sector
Sensors & Transducers
As mining operations across Africa continue to evolve in scale, complexity and automation, the role of advanced safety technologies has become increasingly important in protecting people, equipment and productivity.

Read more...
Image processing cameras
Vepac Electronics Sensors & Transducers
The intelligent camera series from Vepac is an integrated camera module consisting of a camera and high speed processor. It offers a high-performance image sensing function at the edge device by embedding standard image processing software or the customer’s developed software.

Read more...
OMRON launches non-contact safety door switch
Omron Electronics Sensors & Transducers
OMRON has unveiled its latest innovation in non-contact safety door switches, designed to enhance workplace safety and streamline machinery operations.

Read more...
Conductivity sensing as a cornerstone of South Africa’s water smart industry
ifm - South Africa Editor's Choice Sensors & Transducers
South Africa’s engineers operate at the intersection of resource constraint and industrial ambition. Few parameters illustrate this balancing act as clearly as water quality. Whether in municipal treatment works, food and beverage plants or mining operations, the ability to measure water quality accurately and continuously has become non-negotiable.

Read more...
Futureproofing pharma, one pixel at a time
Omron Electronics Sensors & Transducers
In pharmaceutical manufacturing, there’s no room for error. Omron’s FH-AI and FHV7-AI vision systems introduce AI-powered inspection that adapts to real-world variability, something conventional rule-based vision systems cannot easily achieve.

Read more...
Long-range laser distance measuring sensor
Vepac Electronics Sensors & Transducers
The MS-100A is a long-range laser distance measuring sensor with a range of 150 to 1000 mm. This sensor excels in applications requiring extended measurement capabilities, such as quality control and logistics.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved