SSI Encoders for Robotics and Automated Motion Control Systems
Industrial automation featuring motion-controlled systems requires high precision and robustness to monitor positioning, speed, and direction without interference from electrical noise. Synchronous serial interfaces, or SSIO rotary encoders are the perfect solution providing high precision measurements and resistance to electrical noise.
How Does an SSI Encoder Work?
The structure of an SSI communication system is like a master-slave system, where the encoder is the slave and transmits data to the controller, which is the master, in relation to clock pulses. The master starts the data exchange by transmitting a series of clock pulses, which prompts the encoder to transmit the most recent position data, bit by bit, in sync with the clock signal.
The transmitted data is in a preset format, such as a 24-bit or 25-bit binary word, which depends on the configuration or specifications of the encoder. Once the transmission is completed, meaning all bits have been transmitted, the encoder resets and stands by for the next clock cycle. This synchronous transmission ensures that data is transmitted in real-time, with collision-free data exchange, making the SSI encoder perfect for precision applications where fast and reliable position feedback is required.
Benefits of SSI Encoders
SSI encoders provide a range of advantages that make them ideal for demanding industrial environments. Their high noise immunity ensures reliable performance even in electrically noisy settings, thanks to robust digital signal transmission. The synchronous nature of the SSI protocol enables deterministic communication, delivering consistent and predictable data updates. Unlike incremental encoders, SSI encoders offer absolute positioning, retaining accurate position data even after power loss. Installation is simplified with just four required connections—clock, data, power, and ground—reducing wiring complexity. Their fast response time also supports real-time position monitoring, making them a dependable choice for precision automation systems.
In summary, SSI encoders are needed for reliable and precise position feedback in various industrial automation applications with motion-controlled systems. SSI Encoders are ideal for real-time precision and reliability, as they can have high noise resistance, absolute positioning capabilities, and deterministic communication.
PCA Encoders stocks a range of brands, such as Avtron, Posital and W&S, that can be fitted to feature SSI interfacing. If you have an application that can benefit from SSI-interfaced encoders, please send any questions to our PCA contact page here or call 1300 362 633.
