The wide selection of compact, bearingless encoders presented by Baumer at the Interlift trade fair provides particularly promising solutions for lift engineering. The absolute encoder MHAD (photo) is one of the highlights in the Baumer portfolio of rotary encoders without integral bearings. It combines the product benefits of narrow dimensions with the functional capabilities of an absolute encoder. The unit is easy to fit into tight spots where installation space is confined and thanks to its large through-hollow shaft the encoder does not consume any space at the shaft end while allowing installation anywhere on the motor shaft.
MHAD is a member of the HDmag encoder family which excels through non-contact magnetic sensing, absolute reliability and maximum availability. MHAD unites high-precision absolute and incremental signals in a single device. The current position will be output as absolute value with 16-bit resolution, while an additional incremental signal (8192 steps per turn) provides speed feedback. The large permissible tolerances of 1 mm on radial and axial displacement as well as air gap allow for safe and quick installation. An LED provided at the encoder acts as activity indicator and at the same time as an installation aid.
The encoder platform provides IP67 protection in its standard configurations, withstands operating temperatures between -40 and +85°C and due to its robust design and magnetic sensing technique provides dependable operation not only in dust and humidity but also during severe shock and vibration.
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