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ETS25

Product catalog summary

Overview

The MEGATRON ETS25 series is a compact 25 mm diameter Hall-Effect singleturn rotary encoder designed for precise 360° angle measurement. It offers multiple electrical connection options and supports Serial Microcontroller Interface (SER) and Serial Peripheral Interface (SPI), including a redundant SPI variant for enhanced reliability.

Specifications

Electrical Data

Electrical rotation angle: 360° continuous
Linearity: Independent linearity ±0.4%, absolute linearity ±0.8% over 360°
Output signals: SER (12-bit resolution, 96 µs update), SPI (14-bit resolution, 600 µs update)
Supply voltage: 5 VDC ±10%
Power consumption: Standard ≤14 mA, Redundant ≤24 mA (no load)
Insulation: 1000 VAC (1 min), resistance 2 MΩ @ 500 VDC

Mechanical and Environmental Data

Mechanical rotation: Endless
Lifetime: >100 million rotations (200,000 with shaft sealing)
Bearing: Sleeve bearing
Max speed: 100 rpm continuous, 800 rpm short term (<1 min)
Operating torque: 0.1–0.6 Ncm without X-Ring, 0.3–1.3 Ncm with X-Ring at 10 rpm
Temperature range: Operating -40 to +85 °C (fixed cable), Storage -40 to +105 °C
Protection: Front IP40 standard; with shaft sealing IP55M/IP66S; Rear IP50 (terminals), IP66 (cables excluding ends)
Vibration resistance: ±1.5 mm / 20 g, 10–2000 Hz
Shock resistance: 50 g / 11 ms, 3x6 shocks
Max radial load: 1 N
Mass: Approx. 26 g (option L)
Mounting torque: ≤ 3 Nm
Materials: Stainless steel shaft, plastic/bronze housing

Immunity Standards

ESD: EN 61000-4-2 Class B
RF Sine Wave: EN 61000-4-3 Class A
Conducted Sine Wave: EN 61000-4-6 Class A
Power Frequency Magnetic Fields: EN 61000-4-8 Class A

Functional Details

The encoder outputs increase with clockwise shaft rotation. Anti-rotation pins (A or B) are available for zero position alignment on SPI versions; SER versions do not have factory zero alignment.

Order Codes and Options

Standard Version (ETS25)

Shaft diameters: 6 mm x 22 mm standard, 6.35 mm x 22 mm, or custom up to 6.35 mm
Output: 14-bit SPI (05SPI), 12-bit SER (05SER)
Shaft sealing: Optional (Option D) or standard without sealing
Electrical connections: solder pads, clamping terminals, flat ribbon cable, round cable
Cable length: standard 0.15 m, customizable up to 1 m
Anti-rotation pins: Options A or B

Redundant Electric Version (ETS25X)

Two independent 14-bit SPI outputs with identical 360° angle and CW rotation
Same shaft options as standard
Electrical connection: two 5-pin flat ribbon cables stacked
Cable length: standard 0.15 m each, customizable up to 1 m (both equal length)
Anti-rotation pins: Options A or B

Additional Options

3.3 V supply voltage
Special shaft designs
Custom cable and connector configurations

Mechanical Drawings and Mounting

Mounting surface roughness: Ra 6.3
Included hardware: Hex nut (AF14), tooth washer, O-ring with shaft sealing
Tightening torque: ≤ 3 Nm
Connector types: Phoenix MCV0.5-3-G2.5 and MCV0.5-5-G2.5 with matching plugs

Compliance and Material Restrictions

RoHS (2011/65/EU) and REACH (EC No.1907/2006) compliant
Drawings conform to ISO E standards

Electrical and Connector Details

Cable options: R (1000 mm), F (150 mm), X variants with AWG26 cable and length tolerances
Pin assignments detailed for all versions including redundant ETS25X
Signal sequences defined for channels A, B, C/Z with CW rotation
Interfaces: SER (ams AS5045 chip), SPI (Melexis MLX90316EDC standard and dual redundant)
Communication protocols per chip datasheets

Additional Notes

Drawings created with SolidWorks CAD, not to scale
Shipment includes inner tooth washer and hex nut
Red cable marking indicates pin 1 for correct orientation
Specifications subject to change without notice

Confidentiality and Intellectual Property

Summary

This datasheet comprehensively covers the MEGATRON ETS25 Hall-Effect singleturn rotary encoder series, detailing electrical, mechanical, interface, and environmental specifications. It supports flexible configurations with robust protection and long lifetime, suitable for precise angle measurement applications requiring reliable serial communication interfaces.

Catalog excerpts

Hall-Effect Singleturn Rotary Encoder with serial output Series ETS25 ETS25-R ■ Serial micro controller interface (SER) or Serial Peripheral Interface (SPI) available ■ Redundant SPI version ■ Versatile electrical connections on demand: Solder- or clamping terminals, flat ribbon or round cable ■ Compact 025 mm design ■ Simple and time-saving bushing design The high reliable Hall-Effect technology provides a constant signal quality over the whole life cycle.. Electrical Data Effective electrical angle of rotation 1.) Independent linearity (best straight line) 1.) Absolute linearity 1.) Output signal Resolution Update rate Supply voltage Power consumption (no load) Insulation voltage 1.) Insulation resistance 1.) Mechanical angle of rotation 1.) Lifetime 2.) Bearing Max. operational speed Operational torque without / with X-Ring Operating temperature range Storage temperature range Protection grade front side (IEC 60529) Standard Option D (with shaft sealing) Protection grade rear side (IEC 60529) Solder- and clamping terminals Flat ribbon - and round cable Vibration (IEC 68-2-6, Test Fc) Mechanical shock (IEC 68-27, Test Ea) Endless > 100 Mio. shaft rotating movements For Option D (with shaft sealing) the sealing is at least working up to 200 000 shaft rotating movements Sleeve bearing 100 rpm (< 1 min 800 rpm short time) 0,1 < M < 0,6 Ncm / 0,3 < M < 1,3 Ncm (@ RT, 10 rev./min) -40..+85 °C (fixed cable) -40.. + 105 °C IP40 IP55M, IP66S IP50 (solder pads and connectors excluded) IP66 (end of cable excluded) ±1,5 mm / 20 g / 10 bis 2000 Hz / 16 frequency cycles (3x4 h) 50 g / 11 ms / half-sine (3x6 shocks) MEGATRON Elektronik GmbH & Co. KG ■ Hermann-Oberth-Strasse 7 ■ 85640 Putzbrunn / Munich Date: 08/21/2019 Tel.: +49 89 46094-0 ■ Fax: +49 89 46094-201 ■ www.megatron.de ■ [email protected] Page: 1 of 7 Specifications are subject to change without noti

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Data Sheet for Angle Sensors Hall-Effect Singleturn Rotary Encoder with serial output Mechanical and Environmental Data Max. radial load Mass (product with option2 L) 1 Fastening parts included in delivery A Hex nut (AF14) and tooth washer, if option D is ordered then an additional O-Ring is part of delivery as sealing between mounting panel and rotary encoder. Fastening torque mounting nut Material shaft Stainless steel Material housing Plastic / Bronze EN 61000-4-6 Conducted sine wave EN 61000-4-8 Power frequency magnetic fields 1.) According IEC 60393 2.) Determined by climatic conditions...

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Data Sheet for Angle SensorsHall-Effect Singleturn Rotary Encoder with serial outputOrder Code Description: Effective electrical angle: 360° Sense of rotation: CW (by rotating the shaft clockwise the output signal rises) Selection: standard=black/bold, possible options=grey/cursive Series ETS25 Shaft diameter, shaft length: Shaft diameter 0 6 mm, shaft length 22mm Option: Shaft diameter 0 6.35 mm, shaft length 22 mm Option: User defined shaft [mm] 0 <6.35mm Supply voltage / Output signal: 14 Bit / 5 VDC ± 10% / SPI 12 Bit / 5 VDC ± 10% / SER Shaft sealing (standard without shaft sealing): Option:...

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Hall-Effect Singleturn Rotary Encoder with serial output Series ETS25 Order Code (electric redundant version) Description: Selection: standard=black/bold, possible options=grey/cursive Effective electrical angle: 360° Sense of rotation: CW (by rotating the shaft clockwise the output signal rises for both signal outputs) Supply voltage / Output signal: 14 Bit / 5 VDC ± 10% / SPI 05SPI Shaft sealing: (standard without shaft sealing) Option: D with shaft sealing Electrical connection: Two 5 pol. flat ribbon cables arranged one above the other Cable length, anti rotation pin (according drawing):...

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Data Sheet for Angle Sensors 1 2 A Hall-Effect Singleturn Rotary Encoder with serial output Technische Zeichnung Drawing 1 View shows ETX25 without inner Mounting Surface teeth washer and hex nut. View shows ETX25 without inner teeth washer and hex nut. View shows 0° position Channel Channel Tightenin Tightening torq B Shipment Shipment with The copying, according distribution Material Limitation use,without prior strictly prohibited rights in the event of the grant The copying, use, distribution or disdosure o strictly prohibited without prior written conse rights in the event of the grant of...

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Data Sheet for Angle Sensors 4 Connector Phoenix: Connector Phönix: MCV0,5-5-G2,5 MCV0,5-5-G2,5 FK-MC0,5-5-St2,5 FK-MC0,5-5-St2,5 Mounting Surface Mounting Surface Picture 1 roughness of installation surface cable option R) Picture 2 (cable option F) Picture 2 Option F (cable option F) Option R planarity of installation surface 1 Picture Tightening torque of hex nut ≤ 3Nm Shipment with inner teeth washer and hex nut (AF14) Material Limitation according to 2011/65/EU (RoHS) and Regulation (EC) No.1907/2006 (REACH) Die Weitergabe sowie Vervielfältigung dieser vertraulichen Unterlage(n), Verwertung...

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Function: VSUP Chipselect Clock Data out Ground Function: VSUP GND Data Clock Chipselect Option F Lead 1 (red) Lead 2 Lead 3 Lead 4 Lead 5 Option R red black brown yellow green Cable and pin assignment ETS25X (redundant version) Function: Option F: Explanation: VSUP 1 Lead 1 (red) 5 pol. flat ribbon cable No. 1 GND 1 Lead 2 5 pol. flat ribbon cable No. 1 Data 1 Lead 3 5 pol. flat ribbon cable No. 1 Clock 1 Lead 4 5 pol. flat ribbon cable No. 1 Chipselect 1 Lead 5 5 pol. flat ribbon cable No. 1 VSUP 2 Lead 1 (red) 5 pol. flat ribbon cable No. 2 GND 2 Lead 2 5 pol. flat ribbon cable No. 2 Data...

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