LeviOne Junior — Compact Control Electronics for Active Magnetic Bearings

The KEBA LeviOne Junior (Type 51LJ008.1020.0010.4) is a highly compact magnetic bearing controller developed by KEBA Industrial Automation Germany (formerly LTI Motion). It is purpose-built to drive and control the active magnetic bearings of KEBA Levispin R140 6-D magnetic-bearing machining spindles, as well as other high-speed magnetic-bearing applications.

Built on KEBA's proven standard servo controller platform, the unit integrates high-resolution position sensor evaluation and power electronics in a single cabinet-mount housing — delivering wear-free, oil-free, maintenance-free bearing operation at extreme speeds.

This unit was removed from a decommissioned machine and is offered in used / tested condition.

Your Benefits at a Glance

• Contactless, wear-free operation — no mechanical wear, no lubrication, no maintenance intervals
• 5 + 1 axis control — fully controls five magnetic-bearing axes plus the drive motor
• Proven servo-platform architecture — based on KEBA/LTI standard servocontroller series for long-term reliability
• Integrated sensor evaluation & power stage — high-resolution position sensors and power electronics in one housing
• Easy commissioning — graphical user interface, adaptive unbalance compensation, adjustable bearing stiffness and damping
• Condition monitoring — built-in process data (vibration, bearing force, temperature) for predictive maintenance
• Safe power-fail shutdown — mains-support operation enables safe coast-down to virtually zero speed
• CE / UL certified — UL file NMTR.E328200; manufactured in Germany

Key Features

Maintenance-Free Magnetic Bearing Control Active magnetic bearings levitate the rotor without physical contact. The LeviOne Junior controller excites the bearing magnets, evaluates high-resolution position sensors, and stabilizes the rotor position in real time — eliminating rolling-element wear, lubrication oil, and regular service intervals entirely.

5 + 1 Axis Control The unit controls five radial/axial magnetic bearing axes plus the spindle drive motor through a single communication interface, simplifying wiring and reducing cabinet footprint.

Adaptive Control & Diagnostics A built-in graphical commissioning tool supports adaptive unbalance compensation, bearing damping and stiffness tuning, and advanced process monitoring (vibration spectra, bearing forces, temperatures) — enabling both fast startup and long-term condition-based maintenance.

Safe Coast-Down on Power Failure In the event of a mains failure, the controller supports controlled energy recovery from the spinning rotor, allowing the magnetic bearings to remain active until the shaft coasts down to near-zero speed — protecting the landing bearings and extending spindle life.

Easy System Integration Communication via standard fieldbus / digital I/O allows straightforward integration into existing machine control architectures. Fully pre-assembled cable sets for sensor and power connections are available from KEBA.