Authorised HEIDENHAIN distributors

ACC Systems Ltd

Industrial Automation

HEIDENHAIN Rotary Encoders

General purpose Rotary Encoders, Angle Encoders, and Motor Encoders


Rotary encoders from HEIDENHAIN serve as measuring sensors for rotary motion, angular velocity and also, when used in conjunction with mechanical measuring standards such as lead screws, for linear motion. Application areas include electrical motors, machine tools, printing machines, woodworking machines, textile machines, robots and handling devices, as well as various types of measuring, testing, and inspection devices.

HEIDENHAIN angle encoders are characterised by high accuracy values in the arc second range and better. These devices are used in applications such as rotary tables, swivel heads of machine tools, dividing apparatuses, high-precision angle measuring tables, precision devices in angular metrology, antennas and telescopes.

HEIDENHAIN incremental rotary encoders with commutation signals provide the angular shaft position value—without requiring previous traverse—with sufficient accuracy to correctly control the phases of the rotating field of a permanent-magnet three phase motor.


Selection guide for Rotary Encoders:

Applications Type Model   Notes
General purpose absolute rotary encoders
Heidenhain EnDat
Fanuc Serial Interface
Mitsubishi Serial Interface
Siemens DRIVE CliQ
SSI Interface
Profibus Interface
Single turn absolute ECN series Stator coupling
ROC series Shaft coupling
Multi turn absolute EQN series Stator coupling
ROQ series Shaft coupling
General purpose rotary encoders Incremental ERN series Stator coupling
ROD series Shaft coupling
Angle encoders with integral bearings
Heidenhain EnDat
Fanuc Serial Interface
Mitsubishi Serial Interface
Absolute RCN series Hollow shaft; EnDat, Fanuc and Mitsubishi interface
Incremental RON series Hollow shaft
ROD series Shaft coupling
Angle encoders without integral bearings Incremental ERP Hollow shaft
ERA Circumferential
ERO6000 Compact disk/hub assembly
Angle encoders with optimised scanning Absolute RCN2000 Hollow shaft, Standard
RCN5000 Hollow shaft, Pancake format
RCN8000 Hollow shaft, High accuracy, Pancake format
Motor Encoders Absolute, Incremental ECN, EQN, ERN & ERO For integration in servo motors

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