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Allen Bradley 842 Encoders 842A-31GB

Product image is representative; revision or series may vary. Contact us to request a specific version.

842A-31GB

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The 842A-31GB from Allen Bradley is an absolute multi-turn encoder designed for precision applications in servo and motion control systems. This model incorporates magnetic encoder technology and provides detailed position feedback.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 842A-31GB

ManufacturerAllen Bradley
Product TypeAbsolute Multi-Turn Encoder
Product Line842 Encoders
Part Number842A-31GB
UPC611320077797
Weight0.81 lbs (0.37 kg)
Encoder TechnologyMagnetic
Total Bit Resolution24-bit
Encoder FunctionPosition feedback
Shaft Diameter10 mm
Absolute TypeMulti-turn
Mounting StyleServo mount
Output Code FormatGray code
Pilot Diameter36 mm
Communication InterfaceSSI
Signal TypeDifferential
Total Resolution4096 revolutions
CertificationCE marked
Application UseServo & motion control
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The Allen Bradley 842A-31GB is an absolute multi-turn encoder, designed specifically for delivering accurate position feedback in demanding applications. Operating on magnetic encoder technology, this device guarantees dependable performance over varied conditions. Its high-resolution capabilities include a total bit resolution of 24 bits, allowing for precise readings necessary in motion control and servo applications.

This encoder supports a maximum of 4096 revolutions, making it suitable for applications requiring extensive position tracking. The unit’s design includes a shaft diameter of 10 mm, allowing it to integrate seamlessly with various machinery setups. Additionally, the pilot diameter measures 36 mm, ensuring compatible mounting, specifically in servo mount configurations. As for the output code, it utilizes Gray code format, providing a clear representation of position data.

Connectivity is established through an SSI communication interface that facilitates effective data transmission. The differential signal type enhances reliability and minimizes noise in the communication path. Furthermore, the 842A-31GB is CE marked, confirming compliance with relevant European standards for safety and performance. This encoder is a robust solution for precision automation tasks, where accurate position feedback is critical, ensuring effective control systems in industrial environments.