Part no.: Netzer DS-25
• Minitature Size, 25mm diameter
• SSI, BiSS-C, Analog (sin/cos)
• Up to 19 bits resolution
• High tolerance to EMI, RFI and magnetic fields
The DS-25 is a member of the DS series of Electric Encoders a product line based on Netzer Precision Motion Sensor proprietary technology. Extremely compact (15mm diameter), lightweight (as little as 4 grams) and high performance (up to 19 bit resolution) these encoders provide unparalleled performance. The Electric Encoder is unique in being holistic, i.e., its output reading is the averaged outcome of the whole area of the rotor, This feature makes the Electric Encoder™ forgiving to mounting tolerances, mechanical wander etc. The absence of components such as ball bearings, flexible couplers, glass disc, light sources and detectors, along with very low power consumption makes the Electric Encoder virtually failure free. The internally shielded, DC operated Electric Encoder includes an electric field generator, a field receiver, a sinusoidal shaped dielectric rotor, and processing electronics. The output of Electric Encoder is a digital serial with absolute position single turn. The combination of precision, low profile, low weight and high reliability have made Netzer Precision encoders particularly suitable to a wide variety of industrial automation applications.
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Synchronous Serial Interface (SSI) is a widely used serial interface standard for industrial applications between a master (i.g. controller) and a slave (i.g. sensor).
Accuracy, Resolution and Repeatability
There are several key terms that are critical to specifying the optimal position sensor for a given application. This application note defines these key terms and how they relate to the sensor’s role in the overall system performance. It is important to consider that precision is very much a system issue and can be dominated by mechanical errors such as eccentricity. This paper discusses the most significant mechanical error for rotary applications (eccentricity) and presents eccentricity tolerant position sensor solutions.
SSI hardware is fairly simple. Just use any RS-422 transceiver to generate the differential signals from/to the microcontroller port pins. Keep reading to learn about the different implementations of SSI hardware.
Miniature Kit Encoders Ensure High Performance in Maxon Micromotors
With the increasing sophistication of electronic controls for mechanical systems, there is more demand for durable, accurate and easy to use displacement sensors. As automation becomes more common there is also an increasing sensitivity to price. Customers also want sensors that can be easily connected and mechanically integrated.