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Motion Control • Feedback Devices

Feedback devices are typically found within motion controller devices, where they provide information regarding position and velocity.Common feedback devices include encoders for position feedback, tachometers for velocity feedback, optical or mechanical switches for end-of-travel information, index signals for a fixed reference position, and Hall Effect sensors for brushless motor phase information. The majority of feedback devices use digital TTL level pulse trains or analog signals, however new absolute feedback devices are capable of serial communication.

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  • Mclennan

    Mclennan encoders include incremental rotary, absolute rotary, high res rotary, and incremental linear types. Their incremental rotary encoders are available in a range of operating voltages and sizes for industrial environments, with any line count up to 5,000pulses per revolution. Absolute rotary feature 13 bit resolution in single turn versions, up to 25 bit in multi-turn. High resolution rotary encoders are available in exposed and kit forms, up to 7.2m counts/revolution. Mclennan's low profile linear encoder offers 50nM in exposed and standard forms.

  • Active Sensors

    Active Sensors offers linear, rotary, and speed sensors for power generation, construction, mining, process control, and robotics applications. Their rotary models include Hall Effect contactless models, potentiometer sensors, high temperature RVDT sensors, and SRT DC sensors.

  • Click Automation

    Click Automation distributes automation products from companies such as Baldor, Baumer Electric, CMC and Pittman. They carry encoders like Pittman's 35mm ROSE, an incremental, noncontacting rotary to digital feedback encoder which translates real-time shaft angle, speed and direction of rotation into TTL -compatible outputs. Other types include rotary optical incremental encoders for OEM with resolution of 500 ppr.

  • MicroSense (formerly ADE Technologies)

    MicroSense (formerly ADE Technologies) offers non-contact capacitive position sensors featuring detection of all conductive grounded targets (with no effect from surface finish or material), high accuracy, and fast response.

  • Siemens

    Siemens offers SIMODRIVE sensor incremental encoders with various electrical interfaces, e.g. RS 422 (TTL), HTL or analog signals with 1 VPP, available for the interfaces of the higher-level control. Versions are also available for different operating voltages. Their SIMODRIVE sensor absolute encoders are available with SSI (synchronous serial interface) or EnDat, or PROFIBUS; single-turn and multiturn.

  • Amci

    Advanced Micro Controls Inc offers brushless size 11 resolver sensors that are optionally sealed to IP67 specs, and are available in over 20 different types with high angular accuracy and repeatability.

  • Micromo

    MicroMo's incremental shaft encoders are based on the optical or magnetic design principles. To reduce the influence of resonant frequencies, the encoders are mounted directly on the shaft or integrated into the motor itself. MicroMo Electronics encoders include integral magnetic, magnetic, optical and capacitive types. Their frequency range can reach as much as up to 250 kHz, and lines per revolution range from 10 to 2048.

  • Balluff, Inc.

    Balluff makes linear position transducers and potentiometers including standard rod, standard profile, tubular, and explosion proof models for lumber, plastic injection, blow molding, stamping, die casting and other automated applications.

  • Cleveland Motion Controls

    Cleveland Motion Controls offers rotary incremental encoders. Their DataTorque family of encoders have features that include 200 kHz and 500 kHz frequency, servo or face mounting, resolution to 2500 CPR and  5400 CPR, and input voltage from 5 to up to 24 VDC.

  • Celesco Transducer Products, Inc.

    Celesco offers rotary sensors including incremental encoders, transducers, inclinometers, and more such as the RT8000 series which gives an analog position feedback signal of a rotating object or shaft in three output signals.

  • Bison Gear & Engineering Corp.

    Bison shaft mount encoders feature1 channel or 2, supply voltage of 5, and pulses ranging from 12, 30, to 100 with an approximate weight of two pounds.

  • Dynamation Transducers Corp

    Dynamation Transducers Corp makes rotary position sensors, automotive sensors, potentiometers, and more such as single turn rotational motion transducers and linear motion transducers that are servo mountable.

  • Allied Motion Technologies Inc.

    Allied Motion encoders are rotary optical encoders available with solid or hollow shaft, and output formats: incremental, sine/cosine, and absolute (single- or multi-turn). Allied Motion specializes in custom design and integration.

  • Everight Sensors Corp.

    Everight Position Technologies offers linear and variable inductive transducers, capacitive rotary encoders, integrated Hall Effect magnetic rotary encoders, Netzer encoders, L/RVDTs, and more.

  • Harmonic Drive LLC

    Harmonic Drive offers their micro encoder series which are ultra miniature three channel incremental encoders with high resolution. Their measurement is as small as 7.5 mm in diameter, and they provide 360 pulses per revolution (1440 with quadrature) and also provides an index pulse. Single shaft and hollow shaft options are available.

  • Fraba Posital

    Posital makes position sensors including inclinometers, such as absolute inclinometers with micro conductive technology, and absolute encoders, including magnetic and optical singleturn and multiturn encoders, all using integrated interfaces for many types of parallel and serial connections, fieldbus systems and industrial ethernet protocols.

  • Dynapar

    Dynapar offers a wide range of encoders. These include absolute rotary; general-purpose, motor mount, and heavy duty incremental rotary encoders, and harsh-duty optical encoders. Dynapar's harsh-duty optical encoders are designed to operate in severe-duty - food, oil/gas and related heavy-duty industrial applications that will not corrode and can withstand temperature extremes from -40ºC TO +100ºC. Their general purpose encoders are offered with integral shaft size from 1/8” to ½” and housing size ranges from 1 to 2.5 diameter.

  • Gefran

    Gefran makes position sensors including linear position sensors and potentiometers, magnetostrictive sensors, melt pressure sensors, transducers, and resistance thermometers.

  • Sensor Systems, LLC

    Sensor Systems encoders include optical incremental and absolute encoders, contact encoders, low cost industrial with resolutions to 1000 PPR are available in a rugged package, and housed single and multi-turn absolute encoders are available. In kit form their high speed incremental encoders are available 2500 PPR to 400kHz, and in housed form to 1000 PPR and 1mhz is available.

  • GE Energy

    GE Energy makes positioning sensors and transducers including rotary position transducers, valve position transducers, and DC LVDTs, for use in rotary or linear positioning of wicket gate position on turbines, or on control valves.