AR35-A21E

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Encoders are devices that encode the angular position of mechanical components. They help transform the rotation of a shaft into an electrical signal representing the position of the shaft in the form of digital or analog pulses. Some of the most common types of encoders used in industrial applications are Incremental encoders and Absolute encoders. The AR35-A21E is a brushless incremental encoder that is used in many industries, such as material handling, robotics, packaging, and medical.

AR35-A21E Construction

The AR35-A21E encoder is a single-ended encoder and is made up of four components: a fixed circular disk, a polarizing glass filter, a hall-effect readhead, and a light-emitting diode (LED). The disk is a reflective surface with slots cut into it that are adapted to the circumferential size diameter. As the disk is rotated, the LED shines onto the disk and the light is reflected to the readhead. The readhead then detects slots in the disk according to the speed of rotation.

AR35-A21E Application Field

The AR35-A21E encoder is a reliable, accurate, and cost-effective solution for angular and linear measurements in industrial applications. This type of encoder is suitable for measuring the speed and position of automated machinery, as well as for providing feedback in servo- and stepper-controlled systems. It is also ideal for applications that require high accuracy and stability. Its small size and weight also make it suitable for applications where space is limited.

AR35-A21E Working Principle

The AR35-A21E encoder uses the Hall-effect to monitor the passage of slots in the disk. The Hall-effect readhead is mounted onto the top of the encoder and is connected to the LED. When the rotation of the disk causes the LED to rotate with it, the slots in the disk will activate the Hall-effect readhead at regular intervals. The resulting pulses are then transmitted into the output signal. The pulses are encoded into a digital output with higher resolution and accuracy, allowing for absolute position feedback.

The AR35-A21E encoder is designed for a long operating life and is capable of withstanding severe shock and vibration environments. It has a rugged construction that is able to withstand temperatures of up to 80°C and an IP65 protection rating. This encoder has a high-speed response time as well as excellent noise immunity, making it suitable for fast and accurate measurements.

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