Catalog excerpts
INCREMENTAL AND ABSOLUTE TRANSDUCERS 2017
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TECHNICAL BASICS Encoders general descriptionU Incremental encoders 18 Installation and operation precautions 32 OPTICAL SOLID SHAFT el - er 30 e / h 36 INCREMENTAL ENCODER eh 38 A / B / D 38 OPTICAL HOLLOW SHAFT INCREMENTAL ENCODER models marked with * are available with Hall phases (commutation signals) MAGNETIC INCREMENTAL ENCODER EF* 36 K EL - ER 38 F / G EL 48 C / P EL - EF* 49 C / P EH 50 FA / FP EH - EL - ER 53 A / B EL - ER 58 F / G - 63 F / G EL 63 GB / FB / PB / PBF / PC / PCF EL - ER 72 A / B EH - EF* 80 C / P / K EH 80 PU EH - EL 88 P EH 88 PE /...
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MAGNETIC SINGLETURN ABSOLUTE ENCODER OPTICAL MULTITURN ABSOLUTE ENCODER MAGNETIC MULTITURN ABSOLUTE ENCODER LINEAR TRANSDUCERS OTHER PRODUCTS EML 50 F / G blind hollow shaft analogue 152 EAM 58 B / C - 63 A / D / E solid shaft PROFIBUS 170 EAM 58 F - EAM 63 F / G blind hollow shaft PROFIBUS 173 EAMX 80 A / D explosion proof ATEX 187 EAMW 58 B / C - 63 A / D solid shaft 194 ER A / B / C / D / E / F incremental linear encoder 200 EPLB cylindrical linear potentiometer 212 EPLC rodless linear potentiometer 214 EPLT linear...
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FOR MORE THAN 30 YEARS WE’VE BEEN FOCUSED ON DEVELOPING AND MANUFACTURING ALWAYS MORE INNOVATIVE ENCODERS. THAT’S WHY WE’RE A LEADING COMPANY, SINCE 1985. The 2015 represented a very significant date for our Company: in fact we celebrated 30 years of activity in the sensor market of the factory automation. More than 30 years of success and accomplishments, started from what at the beginning seemed only a dream but, thanks to the constant efforts and an entrepreneurial vision, has rapidly turned into a solid business project, which counts today with a world-wide presence, a sales network...
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SOLUTIONS FOR MOTION CONTROL IN INDUSTRIAL AUTOMATED SYSTEMS ce © The CE marking (also known as CE mark) is a mandatory conformity mark on many products placed on the single market in the European Economic Area (EEA). ATEX gets its name from the French title of the 94/9/EC directive: Appareils destines a etre utilises en ATmospheres EXplosibles. Employers must classify areas where hazardous explosive atmospheres may occur into zones. The classification given to a particular zone, and its size and location, depends on the likelihood of an explosive atmosphere occurring and its persistence if...
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SOLUTIONS FOR MOTION CONTROL IN INDUSTRIAL AUTOMATED SYSTEMS Reliability, speed and endurance are common and key factors for an efficient operation of systems and robots among the broad field of the Factory Automation. These features play a central role also in the electro-mechanical components of the machines applied in the motion control technology. Eltra has an extensive catalog of encoders with a high level of resolution and IP rating, that satisfy the needs of this macro-area of application in terms of electronics – with several interfaces and output frequencies available – and...
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TECHNICAL BASICS
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GENERAL DESCRIPTION WHAT IS AN ENCODER ? The encoder is a transducer of position and speed which converts the angular or linear motion of a shaft (or axle) into a series of electrical digital pulses. Main technologies used in encoders to detect the signals are: These electrical pulses are employed to control the motion of the mechanical shaft (that has generated them). The encoder is composed by: ·· Photoelectrical or optical scanning (rotary or linear) ·· Magnetic field variations (rotary or linear) ·· Potentiometer (rotary or linear) ·· Magnetostrictive effect (linear) ·· Energy...
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TECHNICAL BASICS | GENERAL DESCRIPTION Some examples of encoders’ mounting Solid shaft rotary encoder mounted by a fixing flange and the elastic coupling. Solid shaft rotary encoder mounted by a clamping fixing. Solid shaft rotary encoder mounted by a fixing flange (or by fixing clamps) and the elastic coupling. Blind hollow shaft rotary encoder mounted by a stator coupling with collar clamping shaft fixing. Through hollow shaft encoder with a rear collar clamping shaft fixing. © Copyright 2017 Eltra S.p.a. Unipersonale. All rights reserved. All informations in this catalog are subject to...
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TECHNICAL BASICS | GENERAL DESCRIPTION ENCODER CODE WHEEL (OR MAGNETIC / LINEAR SCALE) The encoder code wheel (or disc) defines the transmission code of pulses; it is formed by a support made of plastic, glass or metallic material, on which is engraved a pattern of alternated clear (transparent) and opaque seg- ments. On linear scales this patter is replaced by a stationary opaque strip. With magnetic sensing codewheel or linear scale is substituted by a magnetic (north / south) pattern. Example of magnetic linear tape ENCODER OPTOELECTRONIC RECEIVER (OR MAGNETIC SENSOR) the occurring light...
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TECHNICAL BASICS | GENERAL DESCRIPTION ELECTRONIC INTERFACE The electronic interface is the way the encoder communicates data to a receiver. Electrical signals (can be digital or analogue) are trasmitted through the encoder cable to an intellegent device such as interface board, PLC, etc Electronics interface depends on the encoder type, incremental or absolute. interfaces on absolute encoders are: ·· Analogue (voltage or current ) ·· parallel (NPN / NPN Open collector / PNP / Bit PNP Open collector / Push pull) ·· Serial transmission (Serial Synchronous Interface SSI) ·· Fieldbus...
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TECHNICAL BASICS | GENERAL DESCRIPTION MAGNETIC SENSING (ROTARY OR LINEAR) Magnetic encoders employ a signal detection system based on the variation of the magnetic flux generated by a magnet (one or more pole pairs) placed in rotation in front of a sensor, usually fixed to the encoder’s shaft. The variation of the magnetic field is sampled by the sensor and converted into an electric pulse, which determines the position; the magnetic technology could be of two types: on axis or off axis. The main benefit of the magnetic technology is the absence of contact in the detection system, which...
Open the catalog to page 18All Eltra S.p.a. catalogs and technical brochures
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ELASTIC COUPLINGS3 Pages
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EV B / C2 Pages
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EMI 30 M2 Pages
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EH 17 - 30 M2 Pages
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EH 38 A / B / D2 Pages
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EPLC2 Pages
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FES2 Pages
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EPLB2 Pages
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ETMA 1 / 22 Pages
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FE2 Pages
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EPLT2 Pages
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EPLA LINEAR POTENTIOMETER2 Pages
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EAX 80 A / D SSI2 Pages
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EML 50 A / B / BY ANALOGUE3 Pages
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EAM 36 F / G SSI2 Pages
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EA 63 AX / DX SSI2 Pages
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AAM 58 F PROFINET3 Pages
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EA 36 A SSI2 Pages
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EML 50 F / G ANALOGUE3 Pages
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EMA 55 A / AY SSI2 Pages
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EAM 63 AX / DX PROFIBUS2 Pages
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AAM 58 B / C PROFINET3 Pages
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EAM 63 AX / DX SS2 Pages
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EA 58 F - 63 F / G2 Pages
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EA 63 AX / DX2 Pages
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EMA 22 A2 Pages
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EAM 58 B / C - 63 A / D / E5 Pages
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EAMX 80 A / D3 Pages
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EAM 36 A2 Pages
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EAM 90 A -115 A2 Pages
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EA 36 F / G2 Pages
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EAMW 58 B / C - 63 A / D3 Pages
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EAM 58 F - 63 F / G2 Pages
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EA 90 A - 115 A2 Pages
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EA 58 F - 63 F / G4 Pages
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EA 58 B / C - 63 A / D / E4 Pages
