Rotary encoders for axes in drives, machines and systems

SENSOREN

Details: Released: 28.11.2021; Last updated: 24.01.2024; Hits: 18564

Baumer offers a wide range of encoders for a wide variety of applications. One of the innovations is the Heavy duty rotary encoder POG 83 for z. B. cranes and winches in maritime use and the EAM 300 encoder EAM 300 for use in tight installation spaces in Medical Technology or attachments in factory Automation and mobile work machines. Here we report on Baumer's new rotary encoders.

Contents

Industrial absolute encoders
Industrial incremental rotary encoders
- Encoder family with Euro flange and square flange
- Hybrid bearings provide incremental protection against shaft currents
Incremental and absolute encoders for elevator construction
Bearingless encoders
- Parameterize bearingless smart encoders flexibly
- Bearingless encoders with magnetic scanning principle
Heavy duty rotary encoder

Industrial absolute encoders

CANopen encoders for medical technology and mobile automation

16.04.2021/XNUMX/XNUMX | A rotary encoder is often difficult to integrate when used in moving parts or in tight installation spaces. In attachments from mobile work machines or in the Medical Technology the precise measurement of the position in the smallest possible construction is required. For these applications, Baumer has added the EAM300 to its product portfolio of encoders from the Magres EAM series. This is the smallest absolute multiturn encoder with CANopen interface.

The EAM300 magnetic sensor creates more space in the machine construction. The encoder can be light in existing structures retrofit. The compact diameter of the rotary encoder is only 30 mm with a length of only 59 mm (solid shaft, radial) or 53,3 mm (hollow shaft, radial). Numerous variants guarantee more design freedom. All encoder combinations are available as solid or hollow shaft encoders with cable connection or plug and radial or axial outlet.

Like its larger versions EAM360 and EAM580, the encoder has absolute accuracy of up to ±0,15° globally leading. This guarantees precise, absolute positioning. As early as 2019, the sensor specialist had advanced into a dimension that was previously only optical with the robust magnetic rotary encoders of the Magres series Sensors could afford.

All encoder series now with IO Link for the Internet of Things

The high precision and robustness of the shock and vibration-resistant Baumer encoders is based on the Double magnet arrangement. The magnetic scanning reliably delivers signals even in harsh environments such as dirt and dust. Solid Bearing stabilize additionally. The EAM300 is suitable for applications in mammography, radiology or X-ray machines for the Medical Technology, for attachments in Construction and agricultural technology as well as limited installation spaces for factory automation.

Robust magnetic encoders with unrivaled angular accuracy

13.11.2019 | Baumer series magnetic rotary encoders EAM580 and EAM360 work particularly reliably and with high precision. The magnetic absolute rotary encoders work with an angular accuracy of ±0,15 degrees and thus enable exact positioning in the application.

"No competitor product with comparable robustness and durability can hold a candle to the EAM580, EAM360 in terms of absolute angle accuracy," emphasizes Daniel Kleiner, Head of the Industrial Encoder Business Unit. With this generation of robust magnetic rotary encoders, according to Kleiner, Baumer has advanced into a dimension in terms of precision that was previously reserved for optical rotary encoders. "In addition, the series offers the integration of efficiency-increasing interfaces.

"Users report again and again that they achieve visibly better results in their measurements with EAM encoders than with any other magnetic encoder on the market," emphasizes Catherine Blum, Product Manager at Baumer in Frauenfeld, Switzerland. "Measurements in the Baumer laboratory show why: rotary encoders from competitors only meet the values promised in the data sheet under ideal conditions, if at all, but not under demanding environmental conditions. The angular precision of ±0,15° is guaranteed under the wide range of operating conditions specified ".

Patent pending double magnet arrangement

The high precision and robustness of the encoder is ensured by the double magnet arrangement (for which a patent has been applied for), the interaction with a powerful, energy-efficient microprocessor and sophisticated algorithms for signal processing for the conversion, filtering and interpolation of the measured values. Magres encoder work with magnetoresistive (MR) technology. With two signal periods per revolution, it delivers twice as many as the Hall sensors that are often used in rotary encoders from other manufacturers.

That is all shockproof up to 500 g and vibration proof packed up to 30 g. The extra robust EAM R series is also designed for maximum corrosion resistance (CX), use in vehicles (E1-compliant) and functionally safe applications (up to PLd).

Encoder with IO-Link without bearings and explosion-proof

When developing the EAM series, Baumer benefited from the fact that the sensor specialist provided the Basic principles of magnetic rotary encoders co-invented and has built up the know-how very successfully for two decades. The Magres encoder is now in its 4th generation.

Due to their high accuracy, the encoders are even suitable for use in Medical devices: In patient beds for X-ray machines and computer tomographs, for example, they ensure that patients are positioned precisely during treatment. Because here the fraction of an angular degree can be decisive for the success of the treatment. But even with countless industrial applications, the precision of the EAM580, EAM360 encoders also determines how efficiently and effectively the entire application works.

In addition to numerous fieldbus interfaces, Baumer also offers the greatest variety Real-time ethernet-Interfaces such as Profinet, Ethercat and Ethernet / IP. This simplifies device integration enormously for the user. Above all, however, it increases via Link Layer Discovery Protocol (LLDP) for neighborhood detection as well as Media Redundancy Protocol (MRP) or Device Level Ring (DLR), which secure the transmission of data to the controller even in the event of an interruption in a branch of the network, the availability of the system.

OPC UA standard for the Internet of Things

Also supported is the OPC UA communication standard. This ensures a reaction-free and secure data exchange between different systems. The open and platform-independent standard can also be easily adapted to future requirements. This means that the EAM580, EAM360 encoders are ready for the requirements of the Industrial Internet of Things (IIoT). If required, they provide an evaluation of the data for positioning, speed, temperature and operating hours. In this way, users can optimize their processes and improve the design of machines and systems.

Absolute encoder with Ethernet and extremely short installation depth

08.08.2018 | The absolute encoders of the EAL580 series from Baumer offer maximum variance with Profinet, Ethercat and Ethernet/IP Realtime Ethernet interfaces. For applications in plant and mechanical engineering, the EAL580 are not only state-of-the-art communication stacks, but also extremely space-saving and economical with radial connections and the extremely short installation depth of 47 mm.

The encoder can be easily integrated and commissioned. Means Rotary coding switch the required IP address can be set directly on the device. A preset / reset button can be used to set specific position values such as for reference. A plausibility check when setting the device parameters as well as detailed status reports provide the necessary information on site.

The device status is also displayed via multicolored LEDs visualized. The EAL580 supports maximum availability of machines and systems through Device Level Ring (DLR). If there is an interruption in a branch of a network in a ring topology, all rotary encoder data will still be sent to the controller.

The EAL580 is currently the most compact 58 mm Ethernet encoder with a continuous Hollow shaft. This means that it can be optimally integrated into a machine or drive train and enables redundant systems to be set up easily. Thanks to the radial cable outlet, expensive angled plugs and tight, fault-prone bending radii of the connection cables are avoided.

The purely optical one that has proven itself many times in the field Optoturn technology for single and multiturn position detection ensures the highest accuracy and maximum magnetic field resistance. Thanks to a web server integrated in the rotary encoder, the device is ready for the requirements of the industrial Internet of Things. By diagnosing and evaluating data such as position, speed, temperature or operating hours, processes can be optimized and the design of machines and systems improved as required.

Industrial Ethernet encoders and other Industry 4.0 rotary encoders

Whether new development or redesign, the compact Optoturn EAL580 supports simple device integration and maximum system availability with all common real-time Ethernet interfaces.

Absolute rotary encoder with EtherCAT and a cycle time of 62,5 µs

14.11.2017 | Demanding applications such as handling and assembly, graphic machines or packaging machines require high precision in real time with minimal cycle times and the smallest jitter. With the EAL580 Ethercat Baumer is expanding its portfolio of compact Ethernet absolute rotary encoders. With a cycle time of 62,5 µs, these are suitable for high-precision and fast applications. The installation depth is only 47 mm.

The EAL580 with Ethercat encoders are according to the newest CANopen standard 4.0.2 developed and certified. Commissioning is easy and intuitive, especially with the Twincat control software. The device address is assigned automatically and saves time. With a permanently IP67 encapsulated button, the preset value can be set directly on the device. Thanks to the support of File over Ethercat (FoE), firmware extensions can be carried out easily and directly via the control.

The flexible modes of operation Free run, synchronous mode and distributed clocks enable optimal adaptation to the application. Thanks to dynamic PDO mapping, predefined combinations of cyclic data can be selected. In addition to cyclical data such as speed and position, the new encoders also output diagnostic values such as device temperature and the number of operating hours. With the gear factor or rotary axis function as well as endless operation, the control is relieved of time-consuming calculations.

Absolute motor feedback encoders with a long service life

27.06.2016/XNUMX/XNUMX | The absolute motor feedback encoders EFL580 bite C from Baumer deliver signals of the highest quality thanks to high-precision mechanics and optical scanning. Thanks to the highly integrated design and cross-series use of components, the EFL series also offers a long service life.

For the exact Detection of the rotor position the optical scanning provides an absolute position with 13-bit singleturn resolution as standard. In addition, Sincos signals with 2048 periods per revolution are available. For a purely digital speed measurement, position resolutions of up to 21 bits and fast transmission with clock rates of up to 10 MHz are optionally available. In addition to the high transmission security through CRC checksum, the open high-speed Biss C protocol offers a bidirectional one Communication for acquisition and preset of the absolute position and various diagnostic options.

The interference-free Opto-Asic integrated in the EFL series combines all basic functions optical rotary encoder such as detecting the position, signal processing and communication interface in one component. The highly integrated design and the reduction in components also improves the service life and the shock and vibration resistance of the rotary encoders. The Shaftlock bearing design, which has been tried and tested for over 15 years, in combination with robustly dimensioned quality ball bearings, protects the internal sensors from axial impacts or loads. Downtimes and repairs are thus avoided and a long service life is guaranteed.

Analog absolute encoder as single or multiturn

23.03.2011/14/16 | Baumer's new analog absolute encoders work with a high resolution of 130 bits in the single-turn version. In the multiturn variant, which records positions over several revolutions, an additional 4 bits are available in the multiturn area. The measured values are updated in less than 20 µs and then output as an analogue current signal (0...20 mA or 0...10 mA) or voltage signal (10...10 V or -XNUMX...+XNUMX V). . This allows over the entire measuring range very fine gradations realize.

Control inputs are available for the reset function and selection of the direction of rotation. With the single-turn rotary encoder, different angles of rotation between 0 and 360 degrees can be set at the factory. An integrated self-diagnosis continuously monitors the rotary encoder function. So can z. B. Temperature excess or cable break recognize early.

Depending on the version, the analog rotary encoders meet the requirements to Degree of protection IP65 and work at ambient temperatures between -20° and +100 °C. They are suitable for operating speeds of up to 8000 rpm^-1 at a starting torque of less than 0,01 Nm. Current and voltage outputs are short-circuit proof. Even in rather harsh ambient conditions, the encoders work reliably. Its durable housing is made of aluminum as standard, the shaft of stainless steel. Optionally, stainless steel versions are also available.

Typical examples of use can be found in angle measurement in position control circuits on presses, in tilting and lifting technology and in machine tools as well as on handling machines or cutting machines.

Industrial incremental rotary encoders

Encoder family with Euro flange and square flange

07.03.2016 | Baumer has the flexible and economical rotary encoder family Optopulse EIL580 expanded and additional variants with the mounting forms Euro flange B10 and square flange presented. The incremental encoders of the series are based on a sophisticated modular system that is constantly being expanded.

The Euro flange B10 is an important standard worldwide for the fastening of shaft encoders and meets the requirements for high reliability in applications such as rolling mills, the paper and wood processing industry and on cranes. On the other hand, the square flange designed in inches is mainly used in US machines and systems.

Also the new variants with Euro flange B10 and Square flange are based on the optical scanning developed for use in precision rotary encoders with finely graduated numbers of lines from 100 to 5000 and guarantee accuracy and signal quality over the entire temperature range from -40 ° to +85 ° C. In the programmable version, any number of lines from 1 to 65536 and an operating temperature range from -40 ° to + 100 ° C are possible. The permissible shaft load is 40 N axially and 80 N radially. The large variety of output stages offers the perfect interface for every control.

The Optopulse EIL580 have a compact design and are particularly durable. The resulting reliability prevents breakdowns and costly machine downtimes. Suitable accessories from mounting accessories to various measuring wheels rounds off the range.

Hybrid bearings provide incremental protection against shaft currents

Sep 16.09.2015, XNUMX | Baumer presents a new variant of the incremental encoder family Optopulse EIL580which offers protection against induced wave currents. The new variant with hybrid bearings is also more reliable, as it has a current isolating effect compared to all-steel bearings and thus completely eliminates bearing damage caused by shaft currents.

The Optopulse EIL580 encoders are robustly constructed and very durable. The specially Shaftlock bearing construction works reliably even under the most adverse conditions. The metal shoulder between the two ball bearings reliably protects the internal sensors from axial impacts and loads.

The precisely worked mechanics and the high-quality materials offer the best possible Concentricity and axial run-out properties over the entire service life. The modular system of the Optopulse EIL580 series is the basis for a large variety of product variants that are compatible with all current electrical and mechanical standards. The product design combines form with function, making assembly easier.

Incremental and absolute rotary encoders for elevator construction

28.08.2011/XNUMX/XNUMX | Exact positioning and speed control of Elevator cars is a prerequisite for optimal driving. Any distance / time curves can be driven with rotary encoders for position and speed detection. Baumer offers an extensive range of rotary encoders for elevator construction.

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Bearingless encoders

Parameterize bearingless smart encoders flexibly

23.11.2021/XNUMX/XNUMX | The bearingless encoder EB200E from Baumer can be integrated electrically and mechanically much more easily and economically on any axes without complex adaptation of the mechanics. It is the first smart bearingless incremental encoder with IO-Link on the market. The interface reduces cabling costs and effort. The speed monitor function replaces additional hardware components.

Thanks IO-Link interface up to eight encoders can be connected to an IO-Link master with standard cables. The bearingless encoder thus covers completely new applications: The rotary encoder can be parameterized via IO-Link. Two switching outputs can be parameterized via this interface, with which the encoder functions as a speed monitor and monitors overspeed, speed range, standstill or direction of rotation. The EB200E also has a classic HTL signal.

The installation depth is just 12 mm, and the shaft diameters are flexible. The bearingless rotary encoder fits into the machine construction to save space. That contactless scanning principle between the sensor head and the magnetic ring makes the EB200E insensitive to contamination, shock or vibration. With the Baumer Sensor Suite, the system planner has a convenient PC tool for intuitive parameterization and data visualization.

Bearingless encoders with magnetic scanning principle

22.10.2018/XNUMX/XNUMX | the bearingless rotary encoder from Baumer are robust and reliable even under the toughest environmental conditions thanks to the magnetic scanning. Due to their compact design, they can be integrated directly into existing mechanisms.

Heavy duty rotary encoder

More intelligence for absolute heavy duty encoders

19.02.2018/XNUMX/XNUMX | Whether container crane systems, lifting bridges or steelworks, the availability of systems always has top priority. Baumer now provides intelligence in heavy-duty rotary encoders that can be used there HMG10P / PMG10P series. The encoders can be conveniently parameterized from any input device using a WLAN adapter. In this way, device parameters can be set individually on site.

System manufacturers, service technicians and distributors use the compact WLAN adapter to parameterize their encoder quickly and intuitively via Ethernet or WLAN from a PC, tablet or smartphone. An integrated Monitoring function clearly visualizes current encoder signals and facilitates commissioning. A parameter download simplifies the system documentation. Tampering by unauthorized persons is prevented by password protection.

Heavy Duty encoders have been extremely reliable under tough and very aggressive environmental conditions for decades and offer a unmatched lifespan. With two-sided bearings, magnetic scanning and the patented energy harvesting counter of revolutions, the absolute multiturn encoders in a highly robust, heavy-duty design work precisely. Thanks to the WLAN adapter, the high flexibility of these encoders can now be fully used.

In addition to the output of the absolute position, the HMG10P / PMG10P also offer up to two incremental output signals with zero pulse and one integrated speed switch. The resolution of the SSI absolute position, the incremental resolution from 1 to 131072 pulses per revolution and the switching speed from 2 to 12.000 revolutions per minute can be parameterized. Combined with a variety of mechanical, signal and fieldbusinterfaces, there are hardly any limits to the application of the new series.

Heavy duty rotary encoder with speed switch for overspeed detection

22.03.2016/XNUMX/XNUMX | The incremental Heavy duty rotary encoder HOG 86 from Baumer are offering a new variant with a mechanical centrifugal switch with the HOG 86 + FSL version. Safety-related applications that require highly reliable, energy-independent overspeed detection benefit from this. The rotary encoder offers speed detection using the following two principles:

While the interference-free optical scanning ensures a consistently high quality of the incremental output signals even under adverse conditions, the self-sufficient centrifugal switch detects overspeed purely mechanically and transmits this via a switching output. The freely selectable switching speed is preset at the factory.

After the highest orderable resolution of 2500 5000 pulses per revolution has been increased, the new variant HOG 86 + FSL expands the range of applications of the extensive product family. The high-performance output drivers reliably ensure the provision of high-quality signals over cable lengths of up to 550 m (TTL) or 350 m (HTL-P). The encoder specialist also offers an accessory box for interference-free optical signal transmission up to 1500 m over glass fiber.

The core of the incremental heavy-duty encoder family is the consistent design for a long service life, including double-sided bearing, robust design and the long-term stable sealing concept.

Rotary encoder for rough offshore use

18.06.2012/XNUMX/XNUMX | Fall deck machines on rough seas off, that doesn't bode well for the planned maneuver. For this reason, maintenance personnel often replace components such as the rotary encoders on the axes each time the machine is serviced. This is no longer necessary with the new POG 83 incremental encoder from Baumer. It has a service life that extends over several maintenance intervals for cranes and winches.

Baumer has a lot of experience with rotary encoders in the heavy-duty sector. These flow into the design and into the Tightness construction which are unique in the industry. The incremental encoder POG 83 has a long-term seal. Its robust stainless steel housing protects against the ingress of water, humidity and corrosion.

Intensive stress tests on the encoders simulate typical mechanical loads during docking maneuvers or waves. Extreme weather conditions with a change between salt water overflushing and drying are also simulated. The incremental encoder is cyclically suspended several times based on the prevailing conditions.

The function and protection class test are then carried out. The incremental encoder has a long service life and fulfills the protection classes IP66, IP67 and IP69K. This evidence and Baumer's know-how in such applications offer reliability and security for years of maritime use. This includes loading and unloading or the deployment of nets or anchors. A version with DNV-GL simplifies ship approval and system approval for the user.

The incremental encoder has a shaft diameter of 11 mm. It can be fitted with an M10 connection via a Euro flange B23 Stainless Steel plant.