Empower Productivity
Optimal rotary encoders for every automation and robotics challenge

The Heidenhain Group at SPS 2025: Heidenhain and its brands AMO, Renco, and RSF will be in Nuremberg showcasing their innovative solutions for optimal motor feedback at every level of automation performance. Highlights will include specialized encoders that enhance accuracy in advanced robotics, enable collision monitoring in cobots, and deliver built-in vibration analysis.
Multi-range performance with shared interface: ECI and EQI rotary encoder platform
Thanks to a modular design, the ECI and EQI inductive rotary encoders from Heidenhain create more options for tailoring motor feedback to individual applications while keeping a common electrical and mechanical interface. The encoders of the 1100 series, for example, all share a 35 mm housing diameter. The same principle applies to the 1300 series and its 56 mm housing. These standardized mounting interfaces are therefore compatible within each series and also with many other identically sized Heidenhain rotary encoders.

Collision monitoring for cobots: Dual encoders and secondary encoders
The Heidenhain Group offers two types of solutions for obtaining position feedback both upstream and downstream from the gearbox of a robot joint. Dual encoders from Heidenhain are one type. Secondary encoders from AMO and RSF, when used together with a motor encoder, are another. The additional high-precision feedback provided by these solutions delivers not only greater robot accuracy but can also detect forces acting on the robot joint—especially collisions. Cobot manufacturers can leverage this added functionality to implement targeted collision monitoring without resorting to torque sensors.
Fewer sensors with easier mounting: Encoders with built-in vibration analysis
Featuring a built-in accelerometer and the ability to analyze vibrations, the ECI 1323 Splus and EQI 1335 Splus inductive rotary encoders from Heidenhain are convenient solutions for detecting and evaluating oscillations arising within machine components. Handling both motion control and status monitoring in a single device, these encoders can match the vibration signals to their concurring position values, thus enabling rapid analysis about the type and position of a vibration’s source.
Greater accuracy on wide robot motor shafts: Secondary encoders from AMO and RSF
Robot manufacturers can achieve a significant improvement in absolute position accuracy using additional, high-accuracy angle encoders on the robot axis. Mounted downstream from the gearbox, secondary encoders from AMO or RSF can measure the real-world position of every robot joint. Thanks to their modular design, they are suitable for large shaft diameters and challenging installation situations.











