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Eltra S.p.a.
EMA 50 A / B / BY BIT PARALLEL - SSI

EMA 50 A / B / BY BIT PARALLEL - SSI

Product catalog summary

Main Features:
The EMA 50 A/B/BY is a singleturn absolute magnetic encoder with a solid shaft, measuring 50 mm in size. It offers a resolution of up to 13 bits (8192 ppr) and supports power supply up to +30 VDC with SSI or Bit Parallel electronic interfaces. The encoder features a code reset for easy setup, various output options including cable or M12, and a robust construction with separated chambers. It has a solid shaft diameter of up to 10 mm and an IP 67 enclosure rating, with mounting facilitated by a synchronous flange.

Mechanical Specifications:
The encoder supports shaft diameters of 6, 8, 9.52 (3/8”), and 10 mm. It has an enclosure rating of IP 65 or IP 67, a maximum rotation speed of 3000 rpm continuous or 5000 rpm instantaneous, and can handle a maximum shaft load of 30 N axial and 50 N radial. It is designed to withstand shocks of 50 G and vibrations of 20 G. The body and housing are made of EN-AW 2011 aluminum, while the shaft is made of 1.4305/AISI 303 stainless steel. The encoder operates within a temperature range of -25° to +85°C and weighs 200 g.

Electrical Specifications:
The encoder offers resolutions from 2 to 4096 ppr with N/C/P/R/U interfaces and from 2 to 8192 ppr with the S interface. It requires a power supply of 4.5 to 5.5 V DC or 7.6 to 31.5 V DC, with a current consumption of less than 100 mA without load. The maximum load current is 20 mA per channel for push-pull and 40 mA per channel for NPN/PNP. The encoder supports various output types, including NPN, PNP, and push-pull, with auxiliary inputs for U/D and Reset. The maximum frequency output is 25 kHz for Bit Parallel and 100 kHz to 1 MHz for SSI. The encoder has an accuracy of ±0.35° and a start-up time of 150 ms.

Connections:
The encoder provides Bit Parallel and SSI connections, with detailed pin assignments for each function. The SSI connection uses an 8-pin M12 connector, with specific pins for power, data, and clock signals.

Accessories:
The encoder comes with a set of three fixing clamps (P/N 94080001).

Catalog excerpts

SOLID SHAFT MAGNETIC SINGLETURN ABSOLUTE ENCODER MAIN FEATURES Singleturn absolute magnetic encoder size 50 mm with solid shaft • Resolution up to 13 bit (8192 ppr) • Power supply up to +30 VDC with SSI or Bit Parallel as electronic interface • Code reset for easy setup • Cable or M12 output, other connectors available on cable end • Sturdy construction (separated chambers) • Solid shaft diameter up to 10 mm • IP 67 enclosure rating • Mounting by syncronous flange ORDERING CODE EMA 50B 1024 G 8/30 R . XXX SERIES magnetic singleturn absolute encoder EMA MODEL synchronous flange 0 25 mm 50A synchronous flange 0 30 mm 50B synchronous flange 0 25 mm anodized 50BY RESOLUTION (N / C / R / U / P interface) ppr from 2 to 4096 (S interface) ppr from 2 to 8192 CODE TYPE binary B gray G (no powers of 2) binary offset code (0-XXX) BC (no powers of 2) gray offset code (0-XXX) GC POWER SUPPLY 5 V DC 5 8 ... 30 V DC 8/30 ELECTRONIC INTERFACE NPN N NPN open collector C PNP R PNP open collector U push pull P Serial Synchronous Interface - SSI S LOGIC negative N positive P OPTIONS to be reported if not used X reset ZE (with binary or offset binary code) strobe S (with binary or offset binary code) strobe and code reset SZE SHAFT DIAMETER mm 6 mm 8 9,52 (3/8”) mm 9 mm 10 ENCLOSURE RATING IP 65 X IP 67 S MAX ROTATION SPEED 3000 rpm 3 OUTPUT TYPE cable (standard length 0,5 m) P (S interface) M12 connector M12 female connector included, without female please add 162 as variant code DIRECTION TYPE axial A radial R VARIANT custom version XXX © 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 127

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MAGNETIC SINGLETURN ABSOLUTE ENCODERS I EMA 50 A / B / BY EMA 50 A radial cable output , Z0 n.3 120° n.3 120° EMA 50 B / BY radial cable output Axial output © 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 128

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STROBE TIMING M12 connector (8 pin) M12 A coded solder side view FV © 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 129

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