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EA 90 A - 115 A

EA 90 A - 115 A
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EA 90 A - 115 A

Product catalog summary
Main Features:
The document describes the EA 90A and EA 115A series of singleturn absolute encoders designed for factory automation. These encoders utilize optical sensor technology (OptoASIC) and offer resolutions up to 13 bits (8192 ppr). They support a power supply of up to +28 VDC and use the PROFIBUS DP electronic interface. The encoders feature a solid shaft diameter of up to 11 mm and can be mounted using a synchronous or REO-444 flange.
Electrical Specifications:
The encoders have a programmable resolution ranging from 2 to 8192 ppr. They operate on a power supply of 11.4 to 29.4 V DC with a current consumption of 300 mA without load. The output type is RS 485, galvanically isolated, with a maximum bus frequency of 12 Mbaud. Diagnostic features include frequency and position warnings. The maximum frequency is 25 kHz LSB, with an accuracy of ± 1/2 LSB. The counting direction is programmable, and the start-up time is 500 ms. The encoders comply with electromagnetic compatibility standards IEC 61000-6-2 and IEC 61000-6-4.
Mechanical Specifications:
The shaft diameter options are 9.52 mm, 10 mm, and 11 mm. The enclosure ratings are IP 54 and IP 66, with maximum rotation speeds of 6000 rpm and 3000 rpm, respectively. The maximum shaft load is 100 N axial/radial. The encoders can withstand shocks of 50 G and vibrations of 10 G. The moment of inertia is 1.5 x 10-6 kgm2, and the starting torque is less than 0.02 Nm for IP 54 and less than 0.06 Nm for IP 66. The body and flange materials are EN-AW 2011 aluminum, while the shaft is made of 1.4305/AISI 303 stainless steel. The bearings are ball type with a life of 109 revolutions. Operating temperatures range from 0° to +60°C, and storage temperatures range from -15° to +70°C. The weight is 750 g.
Connections:
The encoders use S3 connectors with 5 pins for power supply, line out, and line in. The M12 connectors are A and B coded for different functions. Dimensions are provided in millimeters.
Accessories:
A set of three fixing clamps is available for model 90 A, with part number 94080001.
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Catalog excerpts

EA 90 A - 115 A-1

EA 90 A - 115 A PROFIBUS SOLID SHAFT SINGLETURN ABSOLUTE ENCODER MAIN FEATURES Industry standard singleturn absolute encoder for factory automation applications. • Optical sensor technology (OptoASIC) • Resolution up to 13 bit (8192 ppr) • Power supply up to +28 VDC with Profibus DP as electronic interface • Cable gland or M12 connector output • Solid shaft diameter up to 11 mm • Mounting by synchronous or REO-444 flange ORDERING CODE EA 90A 4096 B 12/28 FXX 10 X 6 P3R . XXX SERIES singleturn absolute encoder EA MODEL synchronous flange 0 40 mm 90A REO-444 flange 115A RESOLUTION ppr max 4096 / 8192 CODE TYPE binary B POWER SUPPLY 12 ... 28 V DC 12/28 ELECTRONIC INTERFACE PROFIBUS DP V0 CLASS 2 FXX SHAFT DIAMETER (mod. 90) (9,52mm 3/8”) mm 9 mm 10 (mod. 115) mm 11 ENCLOSURE RATING IP 54 X (mod. 90) IP 66 S MAX ROTATION SPEED (IP 66) 3000 rpm 3 (IP 54) 6000 rpm 6 OUTPUT TYPE terminal box - radial cable glands P3R radial M12 connectors M12R female connector included, without female please add 162 as variant code VARIANT custom version XXX =Eltnsf © Copyright 2016 Eltra S.p.a. Unipersonale. All rights reserved. All informations in this catalog are subject to change without notice. Eltra takes no responsibility for typographic errors. For the terms of sales please check the website. REV. 160607 118

 Open the catalog to page 1
EA 90 A - 115 A-2

OPTICAL SINGLETURN ABSOLUTE ENCODERS I EA 90 A - 115 A PROFIBUS set n.3 fixing clamps for model 90 A P/N 94080001 S3 connector (M12 5 pins A coded) power supply view solder side FV S3 connector (M12 5 pins B coded) line out view solder side FV S3 connector (M12 5 pins B coded) line in view solder side MV MECHANICAL SPECIFICATIONS © Copyright 2016 Eltra S.p.a. Unipersonale. All rights reserved. All informations in this catalog are subject to change without notice. Eltra takes no responsibility for typographic errors. For the terms of sales please check the website. REV. 160607 119

 Open the catalog to page 2

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