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 for the Automation Industry. www.lika.biz

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

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

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

หลักการทำงานและวิธีการเลือกใช้ Incremental Encoder

ROTAPULS Incremental encoders

Incremental Measuring Systems ROTAPULS Incremental encoders Operation Incremental Measuring Systems

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 an incremental 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.

ROTAPULS Incremental encoders 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 PHOTO-ELECTRONIC READING DIGITIZING POWER OUT POWER SUPPLY +3,3V +Vdc

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

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

Methods for signals transmission 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

Manipulation of signals 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

เทคนิคและวิธีการเลือก Incremental Encoder ROTAPULS Incremental encoders เทคนิคและวิธีการเลือก Incremental Encoder 1) Pulse Per Revolution

ROTAPULS Incremental encoders Scaling for Counters

ROTAPULS Incremental encoders

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

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

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

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

ROTAPULS Incremental encoders 4) Shaft , Bore Diameter Flexible Coupling

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

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

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

Small encoder for industrial applications 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

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

International standard encoder 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

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

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

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

encoder for heavy duty applications 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

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

Through-hollow shaft encoders 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

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

standard blind-hollow shaft encoder 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)

standard blind-hollow shaft encoder 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

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.

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

CB59 Motor feedback encoder 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

CB59 Motor feedback encoder 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

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

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