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Lika Electronic was founded in 1982 in Schio, Italy.

Lika Electronic was founded in 1982 in Schio, Italy. First business was the manufacturing of absolute encoders, followed by the incremental encoders for the European market. www.lika.biz. Today the production includes also magnetic measurement systems, displays & positioning units

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Lika Electronic was founded in 1982 in Schio, Italy.

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  1. Lika Electronic was founded in 1982 in Schio, Italy. First business was the manufacturing of absolute encoders, followed by the incremental encoders for the European market. www.lika.biz

  2. Today the production includes also magnetic measurement systems, displays & positioning units for the Automation Industry. www.lika.biz

  3. Together with standard industrial applications, Lika provides specific solutions tailored on customers’ requirements for high-tech markets www.lika.biz

  4. Range of production • ROTAPULS Optical incremental encoders • ROTACOD Optical absolute encoders • ROTAMAG Magnetic incremental and absolute encoders • LINEPULS Incremental magnetic measurement system • LINECOD Absolute magnetic measurement system • POSICONTROL Displays and Position controllers • DRIVECOD Positioning Units www.lika.biz

  5. All Lika products are manufactured in Italy and sold after in-factory tryout. • Lika is an ISO 9001: 2001 certified Company • All products are compliant to the following specifications/certifications: • CE marking (EN 50081-1, EN 50082-2) • CSA/UL marking • Specific products are compliant to: • ATEX (Explosion proof) • Q+ vendor for OTIS (United Technologies Group) www.lika.biz

  6. หลักการทำงานและวิธีการเลือกใช้ Incremental Encoder

  7. ROTAPULS Incremental encoders Incremental Encoders

  8. ROTAPULS Incremental encoders Incremental Measuring Systems Operation

  9. ROTAPULS Incremental encoders Working principle • It is based on a grated design disc, in other words a transparent disc of glass where a radial grating of lines and gaps forming anincremental track is printed. • The disc is penetrated by a light beam generated by a light source, partially obscurated by a scanning reticle with four additional grated fields. • These four fields are also penetrated by the light beam. During the disc movement they produce four phase-shifted beams. Each beam is phase shifted of half –disc line from the other.

  10. ROTAPULS Incremental encoders POWER SUPPLY +Vdc +3,3V PHOTO-ELECTRONIC READING DIGITIZING POWER OUT Working principle • The modulation index of each light beam is sensed by photo-elements placed on the opposite side of the disc. • The photo-elements transform the entering light signals in four sinusoidal current signals. • The analogue signals are digitized and multiplied by one interpolation circuit • Furtherly they are sent to amplification circuits to be conveniently powered in output

  11. ROTAPULS Incremental encoders Output signals • AB channels = Bidirectional (speed and rotation sense detection) • AB0 = Bidirectional + Zero • /A, /B, /0 = Complementary signals (inverted)

  12. ROTAPULS Incremental encoders Output signals • 1Vpp output circuit • Sin/cos analogue signals for external interpolation

  13. ROTAPULS Incremental encoders Methods for signals transmission • “Normal” = 1 signal each channel (AB0) • connection to Push-Pull, NPN, PNP devices • Needs external filters for noise reduction • “Complementary” = additional inverted signal for each channel (A B 0 + /A /B /0) • safe transmission even with long cables and noisy environment

  14. ROTAPULS Incremental encoders Manipulation of signals • Quadrature of signals (x4) • Reading all signal fronts (A+B), resolution increases 4 times • ex. 500 PPR = 2000 fronts • Interpolation • SIN/COS output signals can be interpolated • Interpolation “divides” a sine/cosine signal into many pulses • ex. 1024 sin/cos x10 = 10240 fronts

  15. ROTAPULS Incremental encoders เทคนิคและวิธีการเลือกIncremental Encoder 1) Pulse Per Revolution

  16. ROTAPULS Incremental encoders Scaling for Counters

  17. ROTAPULS Incremental encoders

  18. ROTAPULS Incremental encoders 500PPR Circumference = 30 cm 30 = 0.06 500 Scaling • Example Wants to show centimeter Pulses Input x Scale Factor = Display 500 X SF = 30 SF = With Scale SF = 0.06

  19. ROTAPULS Incremental encoders 2) Supply and Output Circuit NPN (10-30 Vdc) PNP (10-30 Vdc) Push-Pull (10-30 Vdc) > NPN/PNP Line Driver (5 Vdc) Push Pull / Line Driver(5-30 Vdc) >NPN/PNP 3) Output Signal A , /A B , /B Z , /Z

  20. ROTAPULS Incremental encoders Mono/Unidirectional > 1 Channel Output > A Quadrature/Bidirectional > 2 (Dual) Channel Output > A,B Bidirectional with Index > 3 Channel Output > A,B,O

  21. ROTAPULS Incremental encoders Line Driver > 6 Channel Output > A,/A,B,/B,Z,/Z

  22. ROTAPULS Incremental encoders 4) Shaft , Bore Diameter Flexible Coupling

  23. ROTAPULS Incremental encoders 5) Dimension Body Size ( Europe= mm, U.S. = Inch )

  24. ROTAPULS Incremental encoders 6)Connection Connector (7-pin,10-pin, 12-pin etc. ) Cable (1,3,5,10 meter etc.)

  25. ROTAPULS Incremental encoders With fixing bell With anti-rotation pin With fixing spring With flexible coupling Types of assembly

  26. ROTAPULS Incremental encoders I40 - I41 Small encoder for industrial applications • I40 M20 screw fixing • I41 3 screws fixing • housing Ø 40.5 mm • resolution up to 3600 PPR • cable output

  27. ROTAPULS Incremental encoders I40 - I41 Small encoder for industrial applications • I41 preferential encoder • packaging & food machines • woodworking machinery

  28. ROTAPULS Incremental encoders I58 - I58S International standard encoder • housing Ø 58 mm • shaft Ø 6, 8, 9.52, 10, 12 mm • up to 10000 PPR • NPN, PP, LD, Universal circuit • cable and connector output

  29. ROTAPULS Incremental encoders I58 - I58S International standard encoder • preferential encoder • international standard size • motors and lift motors

  30. ROTAPULS Incremental encoders I58 V – sin/cos encoder • dimensions like I58 (or I58S) • 1Vpp standard output (I58 A 11 µApp) • typ. 1024 or 2048 PPR

  31. ROTAPULS Incremental encoders I58 V – sin/cos encoder • standard output circuit for NCs and drives • motor feedback (AC, DC, Lift motors) • tool machines

  32. ROTAPULS Incremental encoders IT65 - I65 encoder for heavy duty applications • strong die-cast housing Ø65 mm • 100 N shaft load • standard IP65 (IP66 optional) • NPN, PP, LD, Universal circuit • up to 10000 PPR

  33. ROTAPULS Incremental encoders IT65 - I65 encoder for heavy duty applications • standard US size • preferential encoder • woodworking machinery • stone & marble machines

  34. ROTAPULS Incremental encoders Through-hollow shaft encoders C59 C60 C58 C58R C58A • up to 2048 PPR • “R” has collar on the back side • “A” has collar on the front side • up to 1024 PPR • shafts 14 or 15 mm • BR1-xx sleeve for lower shafts

  35. ROTAPULS Incremental encoders Through-hollow shaft encoders C59 C60 C58 C58R C58A • motors with integrated brake • spindles • motor feedback

  36. ROTAPULS Incremental encoders CK59 CK60 CK58 standard blind-hollow shaft encoder • Based on I58 standard • up to 10000 PPR • hollow shafts 14 or 15 mm • BR1-xx reducing sleeve • 3 mounting types (xx58, xx59, xx60)

  37. ROTAPULS Incremental encoders CK59 CK60 CK58 standard blind-hollow shaft encoder • Standard hollow shaft encoder • more robust than through hollow shaft (C58,….) • direct coupling on draw wire support (SF-I-5000) • cable and connector output • preferential encoder

  38. ROTAPULS Incremental encoders C81 feedback encoder • housing Ø 80x36 mm • shaft Ø 18 to 44 mm • up to 4096 PPR • max. speed 3000 rpm • max. operating temperature range: -40°C÷+100°C (-40°F÷+212°F) • IP65 max.

  39. ROTAPULS Incremental encoders C81 feedback encoder • big hollow shaft • stainless steel flange • internal parts in stainless steel • for big sized motors, gear motors • lift motors

  40. ROTAPULS Incremental encoders CB59 Motor feedback encoder • Sin/cos + absolute position • 2048 PPR sin/cos • 1 sin/cos per turn (absolute) • blind hollow shaft Ø 14 or 15 mm

  41. ROTAPULS Incremental encoders CB59 Motor feedback encoder • for brushless or gearless motors • 2048 sin/cos for speed regulation • Z track for rotor position at start-up • Replaces absolute encoders, resolvers, hall effects

  42. ROTAPULS Incremental encoders CK61 feedback encoder • housing Ø 58 mm • blind hollow shaft Ø 10 or 12 mm • up to 10000 PPR • max. output frequency: 300 kHz

  43. ROTAPULS Incremental encoders CK61 feedback encoder • internal coupling • shaft is fixed from backside • easy mounting

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