Setting a new standard for precision in magnetic encoders
Balluff's proprietary magnetizing process brings a new level of accuracy to magnetic encoders. The stronger, more sharply defined magnetic poles produced by Balluff’s Permagnet® technology deliver higher practical system accuracy, enabling Balluff encoders to be more tolerant of variation in the working distance between the encoder read head and the tape. Permagnet® technology reduces dispersion and distortion of the magnetic field throughout the specified working range, reducing the influence of gap-distance variation on the accuracy of the position measurement in real-world applications.
Balluff's magnetic encoder technology has advanced to the point that it can challenge general-purpose optical scale encoders. Magnetic encoders can deliver equal or better performance than many optical encoders, with higher robustness and lower total cost.
Absolute linear magnetic encoders do not require a "homing" or reference run to determine position after power-on, and they are not susceptible to position errors that can occur with incremental systems when a mechanism is moved manually while the power is off. Move commands can be implemented directly as magnitude and direction, without the need to maintain position count or compute differential distances, e.g. distance from reference to current position and distance from current position to new commanded position.
Optical motor encoder systems are widely popular, but have their limitations when faced with challenging application conditions. Shock, vibration, dirt, and liquid contamination can adversely affect optical systems. Magnetic encoders are much less prone to malfunction under harsh operating conditions and can help solve motor encoder failure problems.
Quadrature digital incremental is the most popular encoder interface used in the motion control industry today. Magnetic linear encoders with incremental interfaces are compatible with a wide variety of motor drives and motion controllers.
Incremental rotary magnetic encoders are ideal for precise yet environmentally robust positioning and speed control of rotational axles and shafts.