Bearingless encoders in lift engineering

Safe, compact and quickly installed: Bearingless encoders in lift engineering

The wide selection of compact, bearingless encoders presented by the encoder and sensor expert Baumer at this year’s Interlift trade fair provides particularly promising solutions for lift engineering. “Thanks to their quick and easy installation capabilities and their compact design benefits, these encoders are virtually predestined for lift applications“, underlines Christof Richard, Product Manager Motion Control at Baumer.

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 extremely narrow dimensions with the functionality capabilities of an absolute encoder. The small MAHD is easy to fit into tight spots where installation space is confined. Thanks to its large through-hollow shaft the encoder does not consume any space at the shaft end but allows for installation anywhere on the motor shaft.

MHAD is a member of the HDmag encoder family which excels with extreme robustness thanks to 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, optionally via SSI or CANopen interface. 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 yet so quick installation. An LED provided at the encoder acts as activity indicator and at the same time as installation aid.

The MHAD encoder platform allows you for easy, safe and efficient redundant solutions. Up to 4 sensors can be arranged at the pole wheel, and the integrated self-monitoring functionality ensures consistent high-quality signals and reliable performance.

MHAD 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 vibration.