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Small, bearingless absolute encoders - Non-contacting, robust & very compact
Bearingless magnetic encoders defy adverse ambient conditions thanks to their robust design. At textile machines,
fabrics would meaningfully reduce the service life of ball bearings, and harsh industrial environments or mobile
applications with shocks, vibrations, dust and humidity demand the most of the deployed encoders. For the first time
now there is a bearingless magnetic absolute encoder platform which excels with compact design benefits and allows
for the resilient non-contact sensing technique even if space is a constraint.
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Bearingless magnetic encoder platform
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Photo
Baumer Holding AG
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Baumer is the first manufacturer to offer a bearingless magnetic encoder platform with unmatched narrow dimensions.
The small absolute encoder series MHAD completing the HDmag family provides very compact design benefits with
only 50 mm in diameter and an extremely shallow installation depth of only 20 mm. The encoders are easy to fit into
tight spots where installation space is confined (fig. 1). Thanks to its large through-hollow shaft the encoder does not
consume any space at the shaft end but can be installed in a space and cost saving manner straight between gearbox
and the machine part to be driven. The non-contact sensing principle allows for large permissible tolerances on radial
and axial displacement of +/- 1 mm respectively 0,1 to 0,5 mm. An LED acts as activity indicator and at the same time
as adjusting aid.
The current position will be output as absolute value with 16-bit resolution, optionally via SSI or CANopen interface. An
additional incremental signal provides speed feedback (1024 to 8192 steps per turn). The compact design allows for
arranging up to 4 sensors at the pole wheel for easy and cost-efficient redundant solutions. An integrated
self-monitoring functionality ensures consistent high-quality signals and reliable sensor performance. The compact
magnetic encoder provides IP67 protection in its standard configurations, withstands operating temperatures between
-40 and +85 °C and thanks to its robust design and the utilized magnetic sensing technique provides dependable
operation not only in dust and humidity but also during severe shocks and vibrations.
Naturally the C Batch
solution provides all the features you would expect from
traditional PC-based batch control software yet expands
on this by enabling the execution of state-transition
algorithms for individual phases. This extends the
notion of super states to improve the abstraction level
and simplify programming, in short it makes it easier to
implement and react to changes within the process.
Further, the configurable behavior related to
propagation of holding transition from phases to recipe
and vice versa provides flexible manipulation, while the
recipe versus physical model consistency check increases
safety.
- First
bearingless absolute encoder
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Non-contact sensing technique
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Interface SSI and CANopen
- Absolute
value with 16-bit resolution
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Additional incremental signal
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Integrated self-monitoring functionality
For further information contact:
Baumer Holding AG
Postbox
8501 Frauenfeld
Switzerland
www.baumer.com/
Source
Baumer Holding AG
Article Reference : 020177
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