Encoders with measuring wheels provide motion feedback vital to conveying applications

How encoders function in conveying systems

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Conveying

In conveying applications, the encoder can be combined with a measuring wheel that rides on the conveyor belt or material surface. As the wheel turns, the rotating shaft creates electrical pulses that the encoder sends to the controller. Note that some segmented conveyor systems may not be suitable for measuring wheels.

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Precise Timing

Material transported by conveyors relies on encoder feedback for coordinated functions like cut-to-length, container filling, product inspection/rejection, and pick-and-place. Once the encoder has sent a predetermined number of pulses to the control system, it activates the cutting device, dispenser, camera, actuator, or pick-and-place robot.

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Cut-to-Length

In cut-to-length functions, the encoder generates a fixed number of pulses, which then determine length of travel. When the encoder has sent the predetermined number of pulses to the control system, it activates the cutting device. In the carton sealing example in the video above, the measuring wheel rides along cartons as tape is dispensed. Tape cut is triggered by the controlled when the carton has travelled a set distance.

Tru-Trac® linear measurement solutions

For wheeled linear measurement, EPC developed the Tru-Trac® series for easy installation, accuracy, and reliability. An integrated encoder, spring-loaded torsion arm, and measuring wheel in one compact unit, each model can be installed in any orientation and adjusted quickly.

For more information on choosing the right measuring wheel for your application, refer to Technical Bulletin TB-108: Encoders with Measuring Wheels.

Programming is easy! Watch:

Connect the encoder and select an updated CPR, waveform, and/or output type. Press "program" and your encoder is ready to go.

(video clip)

 

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