Our sensors detect speed when integrated in a drive or indirectly. Balluff sensor technology precisely measures the speed of gears and shafts regardless of the diameter – even at high and low speeds.
Balluff offers a standard catalog portfolio of incremental or absolute magnetic targets in a variety of form factors including linear tape, radial ring, and off-axis ring or disk with pole spacings of 1, 2, and 5 mm. In many cases, applications can be solved with these off-the-shelf items. In applications where no standard product fits the requirements, Balluff offers customizing services for magnetic targets and track readers.
Balluff's Nonius 2-track absolute encoder disc technology is gaining a reputation in the motor encoder world as best-in-class. When combined with a high-quality sensing chip, the high-quality rotary disk delivers unparalleled accuracy for motor shaft position feedback. Balluff absolute rotary disk systems find application anywhere that motor shaft position must be known in real time, for example steer-by-wire electric steering systems. Another application for this technology is in torque motors that are used to index a rotating mechanism to a precise angular location, within < ±0.2° absolute error per rotation.
Compared to alternatives like glass, Mylar, or metal encoder wheels, the advantages of magnetic targets for motor feedback include immunity from contamination by dirt, dusts, and liquids and much higher tolerance of shock and vibration.
The extended temperature range of the inductive BES standard sensors ensures operation free of interference: They measure shaft speeds in the plant construction at temperatures down to –40 °C. Two sensors are sufficient for measuring the speed, detecting the direction of rotation and reliably protecting the equipment from overspeed.
BML S1F magnetic encoders precisely and reliably measure the speeds of the drive shaft directly on the motor. Their narrow form factor allows the existing motor design to remain compact.
Our BML magnetic encoders detect both the direction of rotation and the correct shaft position using reference points. They are extremely accurate at all rotational speeds.
Balluff's rugged inductive proximity sensors report the rotor speed of wind turbines. Two inductive sensors monitor the movement of the holes in the locking plate, thus measuring the rotational speed and detecting the direction of rotation of the rotor.
Balluff's magnetic encoder systems can report the speed of wind turbine rotors with extreme accuracy, even at low speeds. The magnetic tape measurement system is simply wrapped around and attached to the main shaft. The system communicates standard quadrature incremental encoder signals that are compatible with many control systems. The encoder system can determine the direction of rotation and can also provide position feedback to determine the correct position to engage the rotor lock for service.
The encoder system operates without mechanical contact between the reader head and coded track. The generous reading distance of the system tolerates real-world variability in concentricity about the rotational axis, increasing installation flexibility and reducing costs.
Regulating generator or alternator shaft speed is critical to controlling the power quality being fed into the grid. Balluff's magnetic ring encoder operates without mechanical contact between the reader head and coded ring. The generous reading distance of the system tolerates real-world variability in concentricity about the rotational axis, increasing installation flexibility and reducing costs.