MH58S: the tough encoder for accurate and reliable performances in adverse conditions

MH58S: the tough encoder for accurate and reliable performances in adverse conditions de Lika Electronic

Par: Lika Electronic  03/06/2013
Mots-clés : Encodeur, Codeurs, Codeur absolu

Lika Electronic further improves the remarkable characteristics of the well-know MH58S heavy-duty absolute encoder: superior components and a stronger enclosure grant safe and dependable operation in harsh environments and critical applications. First developed for blade pitch control systems, Yaw (Azimuth) control and nacelle position feedback in wind turbines, MH58S has been tested for years in the aggressive environments where wind farms are typically sited. Now Lika Electronic introduces a revised version with improved ultra-robust mechanical construction, advanced electrical components and a new analogue interface. MH58S features a ruggedized aluminium enclosure built for long term outdoor all weather installation capable of ensuring unparalleled resistance to large climatic and temperature fluctuations (-40°C +85°C / -40°F +185 °F) and IP67 / IP69K protection, thus it is rated for high-pressure and high-temperature wash downs and even for steam cleaning and underwater applications. In addition it encompasses oversized ball-bearings to both withstand greater radial and axial shaft loadings (up to 270 N) and deal with mechanical tensions. For additional safety it can be equipped with special electrically insulated shaft couplings designed to reduce backlash to zero and absorb efficiently shock and vibration impacts. The magnetic circuitry is safely sealed inside the robust enclosure and, on demand, it can be protected by overmolding encapsulation. High-quality state-of-the-art components have been selected to provide superior performance, high resistance and reliable operation in extreme operating environments. They further ensure long service life due to the contactless & wearless measuring principle. MH58S is offered with SSI serial interface and analogue interface today. SSI model is designed in 12-bit single-turn version and 24-bit multi-turn version (12-bit single-turn + 12-bit multi-turn). As an option, when maximum safety is required, resolver signals can be sent to the frequency inverter by an integrated resolver. Voltage 0-5V, 0-10V, ±5V, ±10V and current 4-20mA, 0-24mA, 4-24mA analogue interface with 12-bit resolution is also available. It is claimed to provide extremely clear and stable signals even when the encoder is exposed to significant temperature fluctuations. Cable and M23H 12-pin connector standard options can be supplied for both models. Among the special application features, MH58S can be fitted with an external Preset button for easy zero-setting operation; and with a pressure balance valve to prevent the condensation from forming on the inside of the housing. This rugged encoder is hardened to withstand critical environments and severe working conditions; thus it is ideally suited for installation in wind turbines, iron and steel mills, cranes, portal cranes and hoists, marine installations, outdoor equipment, utility vehicles, solar power plants and generators.

Mots-clés : Arbre saillant, Codeur absolu, Codeur absolu magnétique, Codeur magnétique, Codeur monotour, Codeur multitour, Codeurs, Encodeur, Encodeurs, Interface sérielle, Sortie analogique, Système de mesure magnétique, Turbines éoliennes,

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