Posital Fraba Encoders
Posital Fraba is a leader in providing high-quality machinery and packaging, including rotary encoders. Rotary encoders are electromechanical devices that measure the angular position of a shaft. There are a variety of these encoders, ranging from programmable and non-programmable to magnetic and optical. These encoders can help to increase the accuracy of positioning within your mechanical system.
Encoders can be broken into two main types, incremental encoders and absolute encoders, as well as kit encoders. We will provide details about the differences between the various encoders available to find the best one to use for your particular application.
Incremental Rotary Encoders
Incremental rotary encoders are more commonly used than absolute encoders as they can relay the position of your device in real-time. These rotary encoders give high-resolution measurements, are resistant to high levels of shock and vibration, and can measure the velocity of your mechanical system.
As the shaft of an incremental encoder rotates at a particular angle, it outputs a signal which determines the resolution of the encoder and tracks its position relevant to the number of output pulses per revolution. The encoders may require recalibration by moving the encoder to a resolute reference point to help ensure precise, accurate measurements of its absolute position.
This type of encoder is often found in heavy-duty applications such as paper mills, industrial duty applications such as the food and drink industry, and light-duty applications including robotics and electronics. For instance, incremental encoders can be found within the mouse you use for a computer.
Posital Fraba incremental encoders have up to 16384 pulses per revolution, are compact down to 36mm ø, with high-quality material options available, including stainless steel and heavy-duty housings.
Absolute Rotary Encoders
While an incremental encoder tracks any changes in position, an absolute rotary encoder does not need to be recalibrated to remain accurate. This type of encoder can maintain its position even with a loss of power and is highly resistant to shock and vibration.
Rather than a continuous stream of pulses, absolute encoders output specific information for position, resulting in more accurate resolution and motion detection in complex systems. The output of these unique ‘digital words’ represents binary code that identifies the position of the rotary encoder.
There are a variety of options within the realm of absolute encoders, including optical encoders that allow light to pass through an open marker in the encoder and magnetic encoders that determine position as magnets on the encoder pass by magnetic sensors.
Absolute encoders are typically chosen for systems that require high levels of precision, such as medical and Computer Numerical Control (CNC) applications. These encoders are safe, efficient, and guarantee reliable positioning, making them top choices for applications spanning wind turbines to healthcare equipment.
Posital Fraba absolute encoders are battery-free, compact to 36mm ø, and are available in stainless steel, ATEX, and SIL encoders.
Kit encoders remove the need for intricate equipment by allowing for automatic calibration of the encoder. These kits have a variety of programmable features, use both absolute and incremental technology, and are resistant to shock, vibration, dust, and moisture.
Posital Fraba kit encoders can operate in temperatures ranging from -40-degrees to 105-degrees Celsius and are compact up to 36mm in diameter. This kit encoder has an electrical resolution up to 17 bit and a multiturn resolution up to 32 bit as well as an accuracy of 0.1-degrees.
If you are still unsure which encoder may be best for your system, contact us today. Let us help you in finding the best encoder to use for your application.
Elite Controls, Inc. (ECI) is an expert in electronics and hydraulics, supplying equipment including high-quality motors and motor controls to a variety of industries ranging from agriculture and industrial to fluid power throughout the United States and internationally.