Whether in industrial environments or in rough outdoor use – increasing of efficiency, reliability and durability are of primary importance. Therefore, components like encoders must meet the many different requirements, ensure maximum resistance and being efficient as well as economic at the same time. The robust magnetic absolute encoders of the MAGRES series by Baumer are proven under harshest conditions throughout the world. The new encoder generations EAM580 and EAM360 open up interesting and versatile application opportunities by combining proven robustness with ultimate precision and cutting-edge communication technology. Thanks to EN 13849 – compliant firmware, it is possible to integrate the encoders into safety functions up to PLd.
Efficient process control at high level of flexibility
With high angular accuracy of ±0.15°, the absolute encoders EAM580 and EAM360 ensure efficient process control and simplify application design in parallel. These magnetic encoders can demonstrate their benefits in terms of robustness also in applications which previously required optical sensing. Thanks to their innovative design and special compensation procedure, their magnetic sensing precision excels by measuring stability and accuracy over temperature, speed and change in the direction of rotation.
The broad product family with many mechanical designs, lots of mounting and interface options both in 58 and 36 mm design offers an outstanding selection with maximum flexibility to choose the optimum encoder. The modular design is not only key to efficiency but also a consistent concept of robustness. For example, the compact 36 mm design integrates the same large ball bearings as the 58 mm variant. Another highlight is the bearingless encoder kit, where the magnet rotor is installed separately as an individual component. Without bearings, encoder operation is virtually wearfree. Also the multiturn variants feature a wide 2 mm air gap for simplified installation.
Another focus was on cutting-edge communication technology. Among others, the Profinet variants support the Media Redundancy Protocol (MRP) and the Link Layer Discovery Protocol (LLDP) for neighborhood detection. This way, they increase machine and system uptime respectively reduce downtime for maintenance.
Ultimate reliability thanks to EN 13849 compliant firmware
The MAGRES EAM encoder firmware was developed based on EN 13849 standard. Therefore the encoders can be integrated as standard components embedded software overall certified systems up to PLd. The application note provides users with all information necessary for efficient safety assessment. EAM580 with CANopen interface is also available with redundant sensing. Position is transmitted via two Node IDs which have to be checked for plausibility in the control.
Excellent performance under extreme conditions
Particularly in rough outdoor use, for example installed at utility vehicles or mobile cranes, encoders have to endure harmful impacts in all their facets. Special stress is imposed by severe shocks and vibration as well as permanent exposure to dust, dirt, water and frost.
Baumer can look back on long-year experience which was put into the new series design for further product evolution. The magnetic encoders ensure maximum resistance to shocks up to 500 g and vibration up to 30 g. In addition, a steel housing ensures high immunity against external magnetic fields. Furthermore, the large and widely spaced ball bearings endure radial and axial shaft loads up to 80 N respectively 40 N. The resilient ShaftLock design prevents axial shaft penetration for maximum reliability and resistance even when improperly installed.
Integer part of the new generation is the „R“-series EAM580R and EAM360R with absolute reliability in permanent operation under extreme conditions, particularly in the mobile automation industry. To meet the high demands on electromagnetic compatibility prevailing in this industry, the electronics is designed and tested for compliance to ECE R10 requirements. The encoders come with C5-M corrosion resistance and IP67 protection in their standard variants. The 0.5 mm2 wire core cross-section enables efficient connectivity by directly attaching the automotive connector.
Applications in wind energy plants have similar high requirements. Particularly for offshore wind turbines reliability is the decisive criterion since any downtime entails high costs. The robust encoder design ensures extreme durability even in harsh climate under adverse conditions. When used for redundant sensing, as for example in rotor blade angle alignment, precision plays an important role since measuring differences in two-channel sensing may impair system uptime. Here, the MAGRES series with high angular accuracy of up to ±0.15° is a precise solution for efficient pitch control.
Thanks to outstanding robustness combined with high precision, the MAGRES EAM encoders are ideal for most varied applications in industrial environments.
Oriented towards the future and IoT ready
Sensor information takes center stage in Industry 4.0 and IoT. Sensor manufacturers face the challenge of having to make the large sensor and interface variety “IoT ready”. EAM580 absolute encoders support the OPC UA communication standard via Profinet, which ensures reliable and non-reactive data exchange among different systems. This open and platform- independent architecture enables easy adaptation to future requirements.
The new encoder generation MAGRES EAM is based on the proven design and the logic further product evolution to ensure even longer lifetime in particularly demanding environments. The broad portfolio is a wide selection going together with outstanding price-performance ratio.
For more information, please visit http://www.baumer.com.