•••••• • •• Rotary encoders and angle encoders for integrated and hollow-shaft motors Rotary encoders and angle encoders for these motors have hol-low through shafts in order to allow supply lines, for example, to be conducted through the motor shaft—and therefore through the encoder. Depending on the conditions of the application, the en-coders must either feature IP 66 protection or—for example with modular encoders using optical scanning—the machine must be designed to protect them from contamination. In the selection table you will fi ndRotary encoders with the measuring standard on a steel drum for shaft speeds up to 42 000 min •• • • Sealed linear encoders are characterized by:A high degree of protectionSimple installationSealed linear encoders are therefore ideal for applications in envi- ronments with airborne liquids and particles, such as on machine tools. Exposed linear encoders are characterized by:Higher accuracy grades Higher traversing speeds Contact-free scanning, i. e., no friction between scanning head and scaleExposed linear encoders are suited for applications in clean envi- ronments, for example on industrial measuring machines or production equipment in the semiconductor industry. For Selection Table see page 14
–1 For Selection Table see page 16 Linear encoders for linear motors Encoders with integral bearing, with stator coupling or modular design Encoders with high quality Encoders with good acceleration performance absolute and/or incremental output signals for a broad bandwidth in the control loop Linear encoders on linear motors supply the actual value both for the position controller and the velocity controller. They therefore form the basis for the servo characteristics of a linear drive. The linear encoders recommended for this application:Have low position deviation during acceleration in the measuring directionHave high tolerance to acceleration and vibration in the lateral direction Are designed for high velocities Supply sinusoidal incremental signals of high quality For Selection Table see page 12

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