Absolute rotary encoders output precise position information—even after a power-off condition—by assigning a unique digital value, or “word,” to each shaft position. But in applications where the encoder makes more than one revolution during the process, there is no way to know how many turns it has completed. At least not with the traditional type […]
Absolute Encoders
Resolver versus encoder — what’s the difference?
Resolvers and encoders are both devices that measure the rotary position of a shaft by converting mechanical motion into an electrical signal. Resolvers have a longer history, originally used in military applications and adopted for industrial use due to their rugged design. But encoders are taking the place of resolvers in many applications. What’s driving the shift […]
Linear encoder types — and parameters for selection
Linear encoders monitor linear movement and provide position feedback in the form of electrical signals. In servo driven systems, linear encoders supply the precise position of the load, typically in addition to the speed and direction feedback provided by the motor’s rotary encoder. For stepper driven systems, which typically operate in open-loop mode with no position […]
Programmable Encoders: The Next Generation
by Jarrod Orszulak, Product Manager, POSITAL-FRABA The latest programmable encoders offer both incremental and absolute functionality on one hardware platform and can be programmed with a WiFi connection. Programmable incremental encoders have become more common recently. This is largely due to the fact that the measurement characteristics of the device (number of pulses per rotation, […]
FAQ: What is the difference between absolute and incremental encoders?
Rotary encoders track speed and position. Absolute and incremental encoders both do this, but operate differently and have different methods of implementation. Rotary incremental encoders work by generating a series of pulses during movement. The encoder disc (sporting marks or slots) attaches to a power-transmission shaft, and a stationary pickup device mounts nearby. When the […]
Sendix absolute: EtherCAT conformance tested second generation encoders with minimum cycle time
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Kübler introduces the latest generation of the Sendix absolute EtherCAT encoders with the shortest bus cycle time for EtherCAT currently available, with a position update every 62.5 μs. The new EtherCAT encoders from Kübler are faster than other devices available on the market. The shorter cycle time of the new Sendix absolute EtherCAT encoders allows […]
“MT” Series Integrated Servo System from Moog
Moog Animatics is proud to announce the availability of the Multi Turn Absolute Encoder options for our “MT” series motors. This option is a hardware-specific internal change with a required external battery for back-up to allow tracking of shaft position when no power is being applied to the SmartMotor. The “MT” series products may be […]
Netzers New DS-25 Lightweight Miniature Absolute Rotary Encoder
Rotary Electric Encoders™ from Netzer provide exceptionally accurate, high resolution, absolute position with miniature to wide diameter hollow shaft and are available with analog or digital outputs. The holistic structure of the Electric Encoder™ provides generous mounting tolerance, thus obviating the need for internal ball bearings. The lack of bearings and components such as flexible […]
How to select, apply and integrate the right encoder for an industrial automation application
Updated June 2016 by Lisa Eitel || by Joe Kimbrell, Product manager, Drives, Motors and Motion, AutomationDirect Encoders are used to determine the position, velocity and direction of motor shaft speed and other mechanical motion. They provide information required for the precise control of a variety of applications, such as positioning a rotary table, pick […]
MRI-Compatible Absolute Rotary Encoder with 13-Bit Res
Micronor introduces the MRI-compatible fiber optic absolute rotary encoder system. The all-optical, non-metallic MR338 passive sensor provides precision absolute angular measurement from 0° to 360° with 13-bit (8192 count) resolution and 12-bit multi-turn tracking . A duplex multimode fiber optic link connects the passive MR338 Sensor to the active MR330 Controller Module installed outside the […]
