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A rotary encoder is an electromechanical device that converts the angular position or motion of a shaft or axle into an analog or digital signal. It typically consists of a rotating element, a sensing mechanism, and an output interface. These components work together to provide precise feedback on the position, speed, and direction of rotation. Rotary encoders are commonly made from materials such as plastic, metal, or a combination of both, depending on the application requirements.
| Output type | Incremental or absolute |
| Resolution | Typically from 12 to 24 bits |
| Operating temperature | -40°C to +85°C |
| Supply voltage | Typically 5V to 30V DC |
| Mounting type | Shaft, panel, or PCB mount |
| Protection rating | IP40 to IP67 |
When selecting a rotary encoder, consider the type of output you need, such as incremental or absolute. It's also important to specify the required resolution, as this will affect the precision of your application. Additionally, think about the operating environment and choose an encoder with an appropriate protection rating. Certifications, such as CE or UL, may also be relevant depending on your industry standards. Always provide details on the required quantities to receive accurate quotes.
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Incremental encoders provide relative position information, while absolute encoders provide a unique position value for each angle.
Resolution should be based on the precision required for your application; higher resolution offers finer control.
Yes, but ensure you select an encoder with a suitable IP rating for environmental protection.
Lifespan varies by model and usage, but many encoders can last several million revolutions.
Most rotary encoders can interface with common control systems, but check compatibility with your specific setup.
Factors include resolution, mechanical alignment, and environmental conditions such as temperature and vibration.