By Jarrod Orszulak | Product Manager POSITAL FRABA Inc. About 50 miles south of Bethel, Alaska, and 50 miles north of the Bering Sea lies Tuntutuliak (locally referred to as Tunt), a tundra village of about 400 Yup’ik Eskimos. Most of the residents here survive off the land through subsistence hunting, fishing, and berry picking.…
What features should OEMs consider when choosing encoders?
Rotary encoders are often one of the least discussed components of a wind turbine and yet they are integral to many related applications. Encoders are an electro-mechanical device that converts the angular position of a shaft or axle to a digital code. Three of the most common uses for encoders in turbines are: monitoring and controlling blade…
How are encoders used in wind turbines?
It turns out that high vibration and temperature extremes kill even “heavy duty” optical encoders. So to handle such loads, encoder manufacturers have designed units just for wind turbines. There are three or four basic applications for encoders on the wind turbine, depending on turbine design: Blade pitch, which controls the amount of wind each…
Absolute rotary encoders added to Heidenhain line
Heidenhain has expanded its absolute rotary encoder offering with the new RIQ/IQN 425 series. These sturdy, inductive rotary encoders were designed for use in applications in the automation and wind energy industries, wood machining, tracking systems for photovoltaic facilities and direct measurement of elevator cabins, to name a few. The rotary encoders of the RIQ…
Encoder interface outputs to Siemens Drive CLiQ
In an effort to increase encoder compatibility with Seimens controls, Heidenhain has developed the EIB 2391S interface box. Ideal for applications with Sinamics drive components, the EIB 2391S enhances the serial interface offering for many of Heidenhain’s absolute encoders. With IP 65 and its compact size, the EIB 2391S is suitable for any industrial environment.…
The toughest encoder for the most challenging conditions
Ideally suited to the wind power generation industry, the NorthStar Series HD35R Generator Encoder from Dynapar is designed with harsh conditions in mind.
Hollow-shaft version of magnetic rotary encoder
The Magnetocode (MCD) absolute rotary encoders feature reliability, accuracy, and adaptability. Now, a new hollow-shaft version of the MCD encoder makes it easy to mount these devices on shafts up to 20-mm dia. The recent devices are available with analog (voltage/current) or digital electrical interfaces. Analog versions are a substitute for traditional potentiometers, offering superior…
Rugged encoder line adds another for wind turbines
A line of rugged encoders has added a heavy duty, incremental, shafted version to deliver superior reliability in tough wind generator, steel, and paper applications. The HD35R, made by Dynapar in the U.S., will feature a 10-day lead time, and will be an excellent alternative to the Hubner POG90, according to the company. A few…
Stainless steel encoders
Sensor products deployed in harsh environments demand specific housing and sealing techniques as protection against prevailing adverse conditions. Typical applications include the offshore industry, chemical industry, and container ship loading facilities. Encoders installed there must withstand salty air, aggressive media and lubricants, oils and cleaning agents. Baumer offers a wide range of stainless steel encoder…
What are wind turbine encoders?
These devices indicate the angular position of a rotating shaft. They are described most often as incremental or absolute. Incremental encoders: This version needs an input voltage, often between 5 and 30 Vdc. The design is similar to a rotary switch in that it is on or off, so the output is 0 or the…
Shock tolerant heavy-duty encoder insulated to 2.5 kV
This edited article come from encoder manufacturer Leine & Linde It’s sometimes the small modules such as rotary encoders in production equipment that make it necessary to shutdown a plant for their replacement in case of faults. This results in enormous costs, often way out of proportion to their size. In the windpower industry, revenue…
Absolute encoder well suited for electric motors
Recent absolute, inductive rotary encoder. Called the ECI 119, this encoder sets itself apart with a low profile (height of 19 mm, outside diameter 92 mm) and large through shaft (50, 38, or 30 mm), making it well suited for electric motors in many applications. The Heidenhain ECI 119 is a single turn, absolute encoder…
Encoder comes with self diagnostics
To avoid false diagnoses or costly downtime an early warning system called ADS (Advanced Diagnostic System) is built into Leine & Linde’s 800 Series of rotary encoders. These devices are often subjected to high mechanical stresses in the form of shock and vibrations as well as high temperatures. Encoders with ADS have detected worn-out ball…
Rugged IP69-rated inductive sensors handles the harsh outdoors
For outdoor applications exposed to harsh environments, Baumer has introduced the IWRR/IFRR Inductive Sensors for object detection and distance measurement up to 12 mm. These reliable IP67 and IP69-rated sensors are sealed against moisture and contaminants and easily withstand temperature ranges from -40 to +80ºC. Available in digital and analog versions, IWRR and IFRR inductive…
Encoder manufacturer launches new website
Dyanpar says it offers the world’s broadest range of encoders, resolvers and accessories for motion feedback control. Dynapar has launched its newly revamped website, Dynapar.com. Intended to enhance the overall customer experience, it helps users find what they need in minutes to resolve their motion feedback control challenges. The company instituted the new, online customization…
Low-profile encoders good for small motors
Low profile incremental rotary encoders with block commutation tracks are especially suitable for use in small-dimensioned servo motors. These rotary encoders of the Heidenhain 1000 and 1100 series come equipped with an industry-standard 35-mm diameter housing. The encoders distinguish themselves by a short overall length and modern opto-ASIC based photoelectric scanning with integrated interpolation. Thanks…
A few guidelines for choosing encoders
Encoders play vital roles on wind turbine equipment but the environment is not always kind to them. A few guidelines help get the most from the devices.
Magnetic encoders for on and off shore turbines
Magnetic hollow-shaft encoders, hermetically-sealed magnetic encoders and heavy-duty encoders detect wear and maintenance issues. Baumer’s line of encoders can be mounted onto generator shafts up to 740 mm in diameter and feature a 27 mm profile. HDMag encoders provide 17-bit single-turn resolution, which provides accurate speed, rotation and position data even in low RPMs. With…
Encoder tolerates heat, vibration, and shock
The Extreme 1000 series provides encoders for severe environments. The measurement and function range on this Leine & Linde encoder (Available in the U.S. from Heidenhain Corp., meets requirements of industries such as wind, steel, crane, and mining machinery. In these applications, the encoder is exposed to extreme mechanical stress, vibrations, shock, and high temperatures.…
Why Big Wind Turbines Depend on a Little Encoder
Over the last two years, Karsten Jeppesen, Sales Manager at Denmark’s Leine&Linde, has noticed a sharp increase in sales of encoders to the wind-power sector. The country relies on wind turbines for most of its new power in an effort to reduce environmentally-harmful emissions. And to improve the efficiency of these big machines, many turbine…