Autonics Encoders – Absolute & Incremental Rotary Encoder

Autonics Encoders are industrial motion sensing devices developed by Autonics Corporation, designed for accurate position detection and speed measurement in automated machinery. These encoders are widely used across industrial automation systems for reliable motion feedback, supporting applications ranging from compact machine installations to high-precision motion control environments. With options including incremental encoders, absolute encoders, solid shaft encoders, and hollow shaft encoders, Autonics provides scalable solutions for industrial motion sensing and machine control integration.

Across India’s manufacturing, packaging, automotive, textile, robotics, semiconductor, and material handling industries, Autonics encoders are widely adopted for their signal reliability, mechanical durability, and compatibility with PLCs, servo drives, and motion controllers. Whether used for motor feedback, conveyor synchronization, or robotic motion control, Autonics encoder solutions are available for machine builders, panel manufacturers, and automation system integrators across the Indian industrial market.

Autonics Encoders – E40S Series

Resolution: 1 to 5,000 PPR.
Control Output: Totem pole, NPN open collector, Voltage, Line driver.
Output Phase: A, B, Z (varies by model).
Response Speed: ≤ 1 ㎲.
Max. Response Frequency: 300 kHz.
Max. Allowable Revolution: 5,000 rpm.

Autonics Rotary Encoder – E50S Series

Resolution: 1 to 8,000 PPR.
Control Output: Totem pole, NPN open collector, Voltage, Line driver.
Output Phase: A, B, Z; A, A, B, B, Z, Z (varies by model).
Response Speed: ≤ 1 ㎲.
Max. Response Frequency: 300 kHz.
Max. Allowable Revolution: 5,000 rpm.
Cable Specifications: Ø 5 mm, 5-wire (8-wire for Line driver), 2 m length.

Rotary Encoder Autonics – E58SC Series

Control Output: A totem pole, NPN open collector, Voltage.
Output Phase: A, B, Z; A, A, B, B, Z, Z (varies by model).
Response Speed: ≤ 1 ㎲.
Max. Response Frequency: 300 kHz.
Max. Allowable Revolution: 5,000 rpm.
Protection Rating: IP50.
Cable Specifications: Ø 5 mm, 5-wire (8-wire for Line driver), 2 m length.

Encoder Autonics – ENC Series

Control Output: A totem pole, NPN open collector, Voltage.
Output Phase: A, B.
Response Speed: ≤ 1 ㎲.
Max. Response Frequency: 180 kHz.
Max. Allowable Revolution: 5,000 rpm.
Protection Rating: IP50.
Cable Specifications: Ø 5 mm, 4-wire, 2 m length.

Autonics Absolute Encoder – EP50S Series

Resolution: ≤ 1024 divisions.
Control Output: NPN open collector, PNP open collector.
Max. Response Frequency: 35 kHz.
Max. Allowable Revolution: 3,000 rpm.
Protection Rating: IP64.
Connection: Axial cable type (cable gland).
Cable Specifications: Ø 7 mm, 15-wire, 2m length.

Autonics Rotary Encoders – E20S Series

Control Output: NPN open collector, Voltage, Line driver.
Output Phase: A, B, Z; A, A, B, B, Z, Z (varies by model).
Response Speed: ≤ 1 ㎲.
Max. Response Frequency: 100 kHz.
Max. Allowable Revolution: 6,000 rpm.
Connection: Axial/Radial cable type.
Cable Specifications: Ø 3 mm, 5-wire (8-wire for Line driver), 1 m length.

Rotary Encoder Working Principle

A rotary encoder detects shaft rotation and converts it into electrical output signals used by industrial control systems. In most optical encoder designs, a rotating disk with precisely spaced slots passes between a light source and a photodetector.

As the disk rotates, the sensor generates pulse output signals representing angular movement. These signals are typically delivered as quadrature A/B phase outputs, allowing control systems to determine both rotational speed and direction.

Many industrial encoders also include a Z phase index signal, which provides a reference position once per revolution. Motion controllers and PLC systems use this signal to establish precise angular position detection.

Autonics encoders are widely used as motion feedback devices in servo systems, motor drives, and industrial automation platforms where accurate position and speed measurement are essential.

Incremental vs Absolute Encoder Technology

Encoders used in industrial machines generally fall into two categories: incremental encoders and absolute encoders.

An incremental encoder generates a sequence of digital pulses as the shaft rotates. Control systems calculate position by counting these pulses relative to a known starting point. Incremental encoders are widely used due to their simplicity, high resolution, and compatibility with PLC motion control systems.

An absolute encoder, by contrast, outputs a unique digital position value corresponding to the shaft’s exact angular location. Absolute encoders can be designed as single-turn encoders or multi-turn encoders, enabling precise position detection even after power loss.

Autonics provides both encoder technologies to support different industrial motion control requirements.

Encoder Resolution & Signal Output Types

Encoder resolution, commonly measured in PPR (pulses per revolution), determines how precisely an encoder can measure rotational movement. Higher resolution encoders generate more pulses for each shaft rotation, enabling finer position tracking.

Autonics encoders are available with multiple encoder output signals, including:

Line driver output
Open collector output
Push-pull output
RS-422 differential output

These output formats ensure compatibility with various industrial control systems, PLC input modules, servo drives, and motion controllers.

Proper resolution selection ensures that machines maintain stable speed feedback, positioning accuracy, and motion synchronization.

Mechanical Design & Mounting Options

Mechanical design plays a critical role in encoder installation and long-term reliability. Autonics encoders are manufactured with robust mechanical structures designed to withstand industrial vibration, high rotational speeds, and continuous operation.

Common mounting configurations include:

Solid shaft encoders with shaft coupling
Hollow shaft encoders for direct motor mounting
Through-bore encoders for large drive shafts

Each encoder includes precision mounting flange options that allow secure installation on machine frames, motor housings, or gear assemblies.

This mechanical flexibility makes Autonics encoders suitable for servo motor feedback, stepper motor systems, conveyor drives, and industrial robotics applications.

Industrial Signal Compatibility & Noise Immunity

Industrial motion sensors must maintain stable signal transmission even in electrically noisy environments. Autonics encoders are designed with strong signal integrity and noise immunity features to ensure reliable data communication.

Differential signal outputs such as RS-422 line driver interfaces allow long cable runs without signal degradation. Encoders also incorporate internal circuitry designed to minimize electrical noise interference.

With high IP protection ratings, vibration-resistant housing, and stable signal processing electronics, Autonics encoders maintain accurate motion feedback in industrial automation systems, robotics platforms, and high-speed production machines.

Product List:

Model No	Shaft outer diameter	Resolution	Output phase	Control output	Connection type
E50S8-2500-3-T-24-C	Ø8mm	2500P/R	A, B, Z	Totem pole	Axial cable connector type
E40S6-100-3-T-24	Ø6mm	300kHz	A, B, Z	Totem pole	Radial cable type
ENC-1-1-T-24	–	–	A, B	Totem pole	Axial cable type
E50S8-5000-3-T-24-CS	Ø8mm	5000P/R	A, B, Z	Totem pole	Radial connector type
E50S8-500-3-T-1	Ø8mm	500PPR	A, B, Z	Totem pole	Axial cable type

Our Dealing Rotary Encoder Brands

Some Frequently Asked Questions

What are Autonics Encoders?

Autonics encoders are industrial motion sensors used to measure shaft rotation, speed, and position in automated machines. These devices convert mechanical movement into electrical signals that can be interpreted by control systems such as PLCs or servo drives.

Most Autonics encoders operate as rotary encoders, generating digital pulse signals through quadrature A/B phase output channels. These signals provide real-time position feedback and speed feedback for industrial machines.

Autonics manufactures various encoder types including incremental encoders, absolute encoders, solid shaft encoders, and hollow shaft encoders, allowing engineers to select suitable motion feedback devices for different industrial automation applications.

How do Autonics rotary encoders work?

Autonics rotary encoders detect rotational movement and convert it into digital output signals used by machine control systems. Inside the encoder, a rotating disk passes through an optical sensor assembly.

As the shaft rotates, the sensor produces pulse signals corresponding to angular movement. These signals are typically delivered as quadrature A/B phase signals, allowing control systems to determine both rotation direction and speed.

Many encoders also provide a Z phase index pulse, which indicates a reference position once per revolution. Motion controllers count these pulses to calculate rotational speed, shaft position, and direction of movement.

What is the difference between incremental and absolute encoders?

An incremental encoder generates a series of pulses as the shaft rotates. The control system counts these pulses to determine position relative to a reference point.

An absolute encoder, however, outputs a unique digital code representing the shaft’s exact position at all times. This allows the system to determine position immediately after power-up without requiring a homing process.

Incremental encoders are commonly used in speed monitoring and motion control applications, while absolute encoders are used where continuous position tracking is required.

What is PPR in rotary encoders?

PPR (pulses per revolution) refers to the number of output pulses generated by an encoder during one complete shaft rotation.

A higher PPR value allows more precise position detection and motion tracking, because the control system receives more detailed feedback about shaft movement.

Industrial machines requiring high precision—such as CNC machines and robotic systems—often use high-resolution encoders to maintain accurate positioning.

If you need more info about our Autonics Encoders, just call us at +91 79955 44066.