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General/Basics

Rotary Measuring Technology – Absolute Encoders

Bus systems: Bus systems: we offer absolute encoderswith a wide variety of fieldbus bus systems. Details about our fieldbus bus systems can be found on our website at:www

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.kuebler .com/service/fieldbus.pdf Cable length: Cable length: the following maximum cable lengths are recommended, depending on theoutput circuitry and any noise sources present: Interface and output circuitmax. cable lengthConnected toParallel CMOS/TTL2 mSPS/IPC
1) Parallel push-pull100 mSPS/IPC
1) SSIup to 1000 m2)SPS/IPC
1) RS 422 /RS 4851000 mSPS/IPC
1 Analogue 4 ... 20 mA200 m
1)IPC = Industrial PC2) Depends on clock frequency: at 100 kHz Lmaxapprox. 250 m;at f = 250 kHz Lmaxapprox. 50 m A Annotations: • Depending on the application the max. allowed cablelength can be shorter, especially in areas with strongelectrical noise.• Always use shielded cables • The core diameter of the signal cores should be ≥ 0.14 mm2• The core diameter of the voltage supply cores shouldbe large enough depending on the cable length, that the voltage supply of the encoder is high enough and the signals do not go below the minimum levels! We strictly recommend the use of the cable types written down in the accessories.

Linear Measuring Technology

Magnetic measuring system LIMES A magnetic sensor is guided across a mag-netic band without coming into contact with it. The changes in polarity on the magnetic band are counted and intermediate valuesare interpolated. Our engineers have fine-tuned the system to such a degree that res- olutions up to 0.005 mm are possible. The system is not affected by dust, shavings or humidity and is resistant to many liquids and to oil. Assemblyis easy - the mag-netic band just hasto be glued into place. There are no problems for cali- bration. up to 90 m measuring lengthup to 0.005 mm resolution The distance between the sensor and themagnetic band can be up to 2 mm. Repeat accuracy is very high. Where is our LIMES system used?The idea: The measuring system offers an economi-cal alternative to optical systems in appli-cations where the high accuracy of theglass rules is not absolutely necessary butwhere up till now no other suitable alterna-tive has been available.Because of its rugged construction themeasuring system can now be used even intough industrial environments.The system is not affected by vibration noris it damaged if subjected to high shock loads. Our flexible magnetic band offers afurther interesting area of application, due to the fact that it can be fitted roundvery large shafts. The maximum length of the magnetic band is 90 m!
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