Hohlwellen- und Wellenausführungen Encoder product-range ‘99 DIN EN ISO 9001 certified company 11.98.2_gb (ed. 6.99) you can count on Wir über uns History At Kübler, we believe that our success depends upon the satisfaction of you, our customer. This has been our conviction, since our beginning in 1960, when Ing. Fritz Kübler started the company as a small one man venture. Today we are a family-owned worldwide enterprise. Quality Kübler’s extensive range of encoders have a broad application area, where movement, position, speed or length has to be measured or recognized. The encoders are used in robotics, medical technology, drive engineering, in woodworking and packaging industries, etc. The use of our preset counters in combination with our encoders is an easy and economic way to build up many of the mentioned applications. Kübler has been certified according to DIN EN ISO 9001 since 1995. The 4sign and other approbations, e.g. D are indicators for the high quality of our products. Flexibility. Kübler has a flexible approach to customer needs - for example special adaptors are no problem. This has led to the creation of many variants, which are also available to third parties. Accessories. The Kübler encoder program is rounded off by a large assortment of accessories, such as plugs, cables, couplings, adapter flanges, distance measuring devices as well as customer-specific components. Express-Service. For customers in a hurry, Kübler has set up a fast ordering system, making it possible to deliver small numbers of devices in 48 to 72 hours. Kübler - Group Kübler - World-wide Kübler is represented in more than 45 countries. 2 Since 1996, Kübler is represented in France by an own division, Fritz Kübler S.A.R.L. This is another step into the future. Introduction you can count on Encoders can be used in applications, where length, positions, speed or an angular position should be measured. They transform mechanical movements into electrical signals and can be divided into incremental and absolute measuring systems. Another basic distinguishing mark is solid-shaft or hollow-shaft encoder. Nowadays hollow-shaft encoders are becoming more and more popular. Using a hollow shaft encoder saves up 10-30% of costs and up to 50% of the required space compared to a shaft encoder. This is achieved by not needing additional couplings, brackets and other assembly aids. To mount a hollow shaft encoder, it is simply necessary to put it on the shaft and a pin prevents the encoder from rotating. The basic advantage of hollow shaft encoders in comparison to shaft encoders is shown in the diagram below (i.e. installation depth). Example (Prices in DM): • shaft encoder • coupling • bracket • mounting time 300.30.50.10.390.- • hollow shaft encoder • simple pin 345.2.- • mounting time 5.351.- Result: Even the basic cost of the hollow shaft encoder is slightly higher compared to the shaft encoder, the overall cost is about 10% less. 9 General Incremental encoders generate pulses, where the number of pulses can be a measure of speed, length or position. In absolute encoders, every position corresponds to an unequivocal code pattern. Application examples Angle measurement you can count on Length measurement Length measurement Speed measurement 10 Detecting of fork’s position Detecting of position Angle measurement Detecting of position you can count on Mounting examples Mounting examples for hollow shaft encoders: Mounting of a hollow shaft encoder with torque stop and pin. (easiest and fastest mounting) Standard hollow shaft encoders are equipped with the torque stop. General Application: If axial play is less than 0.5 mm. Resolution up to 2500 ppr (If no pulse doubling is used) Mounting of a hollow shaft encoder with extended torque stop and long pin. Art.No 8.0000.4600.0000 Application: Specially recommended, if there is a large axial play. Due to the bigger mounting radius of the pin, the resolution can be higher (up to 3600 ppr, if no pulse doubling is used) Mounting of a hollow shaft encoder with the stator coupling Art.No 8.0010.1601.0000 Application: For higher resolution or if no pin can be used, due to mechanical restrictions. No restriction to resolution 11 Mounting examples Mounting examples for shaft encoders with synchronous flange: Mounting with fastening eccentrics and coupling (to reduce shaft overload) Mounting with assembly bell, fastening eccentrics and coupling (to prevent shaft overload and to insulate the encoder thermally and electrically) Art.No 8.0000.4500.XXXX Mounting examples for shaft encoders with clamping flange: Mounting with an angular bracket and coupling (to reduce shaft overload) e.g. Art.No 8.0010.2300.0000 12 you can count on you can count on Mounting examples General Mounting with a commonly use clamping device and coupling (to reduce shaft overload) Mounting an encoder, using a displacement measuring device and a measuring wheel, e.g. for length measuring of foils, cloth etc. The displacement measuring device ensures a constant slight pressure for a safe and precise measurement and also prevents overload of the encoder shaft. Art.No. 8.0010.7000.0004 Mounting with a bearing box, if shaft load is very high, e.g. belt-drives etc. Art.No. 8.0010.8200.0004 13 General you can count on Conformity: All Kübler encoders are fully comply with the 4 regulations and are intensively tested in the EMC laboratories. They are conform to CE requirements according to EN 50082-2, EN 50081-2 and EN 55011 class B. High quality of signals: All encoders from Kübler unlike other systems, are equipped with ageing and temperature compensation. Ageing compensation: Each LED source will inevitably lose it’s power over a period of time. As a result, the output signal degrades. The phase shift between channel A and B of 90° becomes less and less. The direction of rotation can no longer be detected. A special electronic circuit, which is built in the Kübler specific ASIC prevents this effect. Signals of a new encoder Channel A 90° Channel B Signals of an older encoder without ageing compensation Channel A 90° Channel B Benefit: The ageing compensation circuit ensures the same signal, even after many years of operating time. The down time of machines will be reduced dramatically and the reliability is increased. Temperature compensation: This specialized circuit ensures that the quality of the signal will stay on the same high level over the whole working temperature range. Benefit: The positioning accuracy of a machine will not be affected by temperature changes. Short-circuit protection: All Kübler encoders are equipped with short-circuit protection. This ensures, that if there is a short-circuit or misconnection between the output channels the encoder will not be destroyed. Once the encoder is connected the proper way, it will work again. Benefit: In cases of misconnection, which can happen quite easily (e.g. due to unskilled workers), the encoder will not be destroyed. 14 General you can count on Basic terms Environmental conditions: A significant impact on the lifetime of the encoder is made by the environment in which the encoder is operating, e.g.: • The ambient temperature • The expected shaft load • The possible grade of dust/dirt and humidity/liquids Due to their design and the use of high quality components, our encoders are suitable for applications in rough conditions. Definition according to DIN standards 32 878 Working temperature: Is defined as the environmental temperature, in which the encoder will produce the signals defined in the data sheets. Operating temperature: Is defined as the environmental temperature which the encoder can withstand without getting damaged. Dirt/dust and humidity/water: The IP classification according to EN 60529 describes how the encoder is protected against particles and water. It is described as an abbreviation ”IP” followed by two numbers. The first digit defines the size of the particles. The higher the number the smaller the particles. The second digit defines the resistance against water. The higher the number, the higher the water pressure can be. General Temperature: Our encoders have a proctection up to IP 66. These two tables summarise the most used IP ratings: Protection against particles (first digit) 0 1 2 3 4 5 6 not protected protected against particles 50mm and larger protected against particles 12,5mm and larger protected against particles 2,5mm and larger protected against particles 1,0mm and larger protected against dust dust proof Protection against water (second digit) 0 1 2 3 4 5 6 7 8 Shaft Load: not protected protected against vertically falling drops of water protected against falling drops of water up to 15° from vertical protected against water sprayed up to 60° from vertical protected against water sprayed from all directions, limited ingress permitted protected against low pressure jets from all directions, limited ingress permitted protected against strong jets of water, e.g. for use on ship decks, limited ingress permitted protection against the affects of immersion between 15 cm and 1 m protected against long periods of immersion under pressure Due to misalignment and other mechanical influences from outside, the shaft of the encoder is exposed to a number of different loads. This has a direct impact on the lifetime of the ball bearings and also on the electrical signal itself. If there is an overload there will be an early wear and in the worst case it will lead to a failure of the unit and to a destruction of the optical system inside. 15 General you can count on Basic terms On shaft encoders the maximal radial and axial load should not be exceeded. It is highly recommended to use a coupling between the encoder shaft and the drive shaft, see also the accessories and the mounting suggestions. In the technical datasheets of the encoders, typical values for the radial and axial load at the shaft end are listed. This is based on the lifetime of the ball bearing, the speed, the mechanical load and the temperature. For other loads the following diagrams can be used. All of the diagrams are based on the following parameters: • 60° C environmental temperature • The axial load is always half the load compared to the radial load Encoders from Kübler, such as the 9000 series can withstand up to 140 N radial and 70 N axial load. Type series 580X, 585X: 4 120 3 110 100 90 1 radial shaft load in N 80 70 60 2 50 40 30 20 10 2 4 6 8 10 12 14 16 Bearing’s lifetime in years 16 1 n = 3000 min-1 2 n = 6000 min-1 3 n = 9000 min-1 4 n = 12000 min-1 General you can count on Basic terms Type series 9000/9010: 3 2 1 150 135 120 1 n = 2000 min-1 2 n = 4000 min-1 3 n = 6000 min-1 90 75 General radial shaft load in N 115 60 45 30 15 5 10 15 20 25 30 35 40 Bearing’s lifetime in years 17 Incremental encoders you can count on General Assembly and function: Kübler encoders operate on an electro-optical scanning principle. A disk with a radial grating of lines and gaps rotates between a light source (mostly a LED) and a receiver which produces a sinusoidal signal proportional to the light received. Mask LED Receiver Disk with radial lines and gaps Processing of the signals: Selecting an incremental encoder: Number of channels: The sinusoidal signals are processed further in an electronic circuitry, usually a Kübler specific ASIC. This is necessary because most controllers or counters (like e.g. Kübler counters) require digital signals with a certain voltage level. Therefore the signals are pre-processed in the encoder. The pre-processed signals are transmitted by the output circuit depending on the application. When selecting the right encoder, following parameters should be considered in addition to the items mentioned on page 15-17. Encoders with one output channel Encoders with one output channel are used where no direction sensing is needed, e.g. speed control or length measuring. Encoders with two output channels Applications, where the direction of a rotation should be sensed, e.g. positioning, require encoders with two channels A and B being shifted 90° out of phase. By detecting the phase shift, the direction can be located. 18 Incremental encoders you can count on General • Shaft turning clockwise, top-view of shaft • Inverted signals available • 0-pulse is linked to AND with channel A and B Encoders with three output channels In addition to the two channels A and B there is a zero signal available, that appears once per turn. This can be used e.g. as a reference signal during the first revolution after power up. Multiplication of pulses: The resolution of a two channel encoder can be multiplied by two or four using a special edge detecting. An encoder with physically 5000 pulses per revolution can generate 20000 pulses per revolution using this technique. Inverted signals: When used in environments, with a lot of electrical noise and/or if very long cable distances are required, we recommend to use encoders with inverted (complementary) signals. These signals are always available with output circuits of the RS 422 type and sinusoidal outputs. Kübler also offers them at push-pull outputs. Resolution: The required angular or linear accuracy in an application will determine the number of pulses per revolution. Linear movements first have to be transformed into rotating movements by a measuring wheel or a spindle. Example: An encoder is equipped with a measuring wheel. Every revolution corresponds to a distance of 200 mm (circumference). The accuracy should be 0,1 mm. What is the required resolution (ppr)? Given: Circumference of the measuring wheel: C = 200 [mm] Accuracy of the system: A 0,1 [mm] Wanted: Resolution of the encoder: R ? [pulses/resolution] Resolution = Circumference / Accuracy = C / A The required resolution would be 2000 ppr (pulses per revolution). Pulse frequency: The required pulse frequency can be calculated. This is based on the number of pulses per turn (ppr) and the speed (rpm). The max. pulse frequency is listed for each encoder. Usually it is at 300 kHz. Kübler also offers high resolution encoders with a pulse frequency of up to 800 kHz. Example of how to calculate the required pulse frequency fmax: Given: Speed n= 3000 min-1 Resolution of the encoder R = 1000 ppr fmax = (n x R) / 60 The required pulse frequency is 50 kHz. Now you can compare this result with the data of the encoder you would like to choose. 19 General tr = rise time tf = fall time Incremental encoders you can count on General The diagram below can be used as a quick guide: 350 5000 ppr 2500 ppr required pulse frequency [kHz] 300 250 200 1000 ppr 150 100 500 ppr 50 250 ppr 0 2000 4000 6000 8000 10000 12000 speed [min-1] 20 Incremental encoders you can count on Outputs Kübler offers a wide range of possible outputs and voltage supplies for any application. Output Inverted signals Voltage supply RS 422 RS 422 Push Pull output Push Pull output Sinusoidal voltage output Sinusoidal voltage output Sinusoidal current output Sinusoidal current output Yes Yes No Yes Yes Yes Yes Yes 5 VDC 10-30 VDC 10-30 VDC 10-30 VDC 5 VDC 10-30 VDC 5 VDC 10-30 VDC If the encoder is used in an environment with strong electrical noise and long cables we highly recommend the use of inverted signals. Sensor outputs: The Sensor outputs are used if the distance from the encoder to the control unit is very long and the voltage supply at the encoder could drop due to this long distance. The input impedance of the sensor inputs (Controller) is very high, and the voltage drop on the sensor output line is almost zero. Due to this it is possible to detect the actual supply voltage of the encoder (e.g. 4,2 V instead of 5 V). Based on this information the controller will increase the voltage supply to e.g. 5,8 V. Digital outputs: The sinusoidal signal from the optical system is first digitised to have square wave signals available. • Shaft turning clockwise, top view of shaft • Inverted signals are available • 0-pulse is linked to AND with channel A and B To transmit the signals there are two possible outputs available. RS 422 (TTL compatible) or push pull (covers PNP or NPN). For choosing the suitable output for the application the following points have to be considered: • The corresponding unit / controller the encoder will be connected to • The distance from the encoder to the receiver unit • The sensitivity against electrical noise or other interferences RS 422: Normal PLC’s or IPC-controllers offer input cards according to RS 422 specifications. Here encoders with RS 422 should be chosen. Generally we recommend to use RS 422 outputs for very long connecting lines, specially in an area of increased electrical noise and interferences. Also for controllers with TTL inputs the RS 422 should be used, however without the higher immunity against electrical noise. 21 General Outputs and voltage supplies (overview): Incremental encoders you can count on Outputs Output circuit and recommended input circuit RS 422: encoder RS 422 line driver Push-pull: recommended input circuit RS 422 line receiver e.g. AM26 C 32 Z = 120 Ω Push-pull outputs are suitable for count interface cards, electronic counters or PLC inputs. Output circuit and recommended input circuit push-pull with inverted signals: encoder Integrated push-pull driver with automatic wave impedance adjustment (Z = 40..150 Ω) Output circuit and recommended input circuit push-pull without inverted signals: encoder Integrated push-pull driver with automatic wave impedance adjustment 22 recommended input circuit RL = 1 kΩ recommended input circuit RL = 1 kΩ Incremental encoders you can count on Outputs Sinusoidal outputs: The sinusoidal signals are available as voltage signals or as current signals. They can be further processed and can be multiplied by a factor of usually 10, 20, 50, 100, 400, 500, 1000 res. binary factors (512, 1024). Due to the interpolation of the two signals, which are 90° out of phase, a very high resolution can be achieved. This makes these kind of signals specially useful for applications in which very high resolutions are required. Further they are very suitable for digital drives with a very slow and precise movement, e.g. for grinding machines or lifts and elevators. General 1V/ 11 µA 1V/ 11 µA 0,5 V / 5,5 µA • Shaft turning clockwise, top view of shaft • 0-pulse is generated once per turn Output circuit and recommended input circuit for sinusoidal voltage signals: encoder Ra = 10 Ω C1 = 150 pF C2 = 10 pF R1 = 10 kΩ R2 = 33 kΩ U0 = 2,5 V ±0,5 V Output circuit and recommended input circuit for sinusoidal current signals: encoder R = 100 kΩ (±2 %) C = 22 pF U0 = UB /2 recommended input circuit Z = 120 Ω U1 = U0 OPV: e.g. MC33074 recommended input circuit OPV: e.g. MC33074 23 Incremental encoders you can count on Outputs Cable length: Depending on the output circuit and the electrical noise the following cable lengths are recommended: Output circuit max. cable length Encoder connected to e.g. Push pull without inverted signals 100 m Kübler counter/PLC Push pull with inverted signals 250 m PLC/IPC1) RS 422 with inverted signals up to 1000 m (> 50 m depending on frequency) PLC/IPC1) Voltage sinus with inverted signals 50 m PLC/IPC1) Current sinus with inverted signals 30 m PLC/IPC1) 1) IPC = industrial PC Annotations: • Depending on the application the recommended cable length can be shorter, especially in areas with strong electrical 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 should be 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. 24 Incremental shaft encoder you can count on Preferred Type series 5802 Many types in stock Sturdy model to industry standard, Ø58 mm housing Limited variations Temperature and ageing compensation Short-circuit proof outputs Resolution up to 5000 ppr High scanning rate Mechanical characteristics: Speed: max. 12000 min-1 Rotor moment of inertia: appr. 1.8 x 10-6 kgm2 Starting torque: < 0.01 Nm Radial load capacity of shaft*: 80 N Axial load capacity of shaft*: 40 N Weight: appr. 0.4 kg Protection acc. to EN 60 529: IP 65 Working temperature: -20° C up to +70 °C Operating temperature: -20° C up to +75 °C Shaft: stainless steel Shock resistance acc. to DIN-IEC 68-2-27: 1000 m/s2, 6 ms Vibration resistance acc. to DIN-IEC 68-2-6:100 m/s2, 10...2000 Hz Pulse rates available at short notice: 10, 20, 25, 30, 50, 60, 100, 120, 125, 127, 150, 180, 200, 216, 240, 250, 254, 256, 300, 314, 360, 375, 400, 500, 512, 600, 625, 720, 745, 750, 762, 800, 900, 927, 1000, 1024, 1250, 1270, 1400, 1500, 1800, 2000, 2048, 2250, 2400, 2500, 3000, 3600, 4000, 4096, 5000 Other pulse rates on request Incremental • • • • • • • *View also diagrams on page 16 Electrical characteristics: Output circuit: RS 422 (TTL-compatible) push-pull Supply voltage: 5 V (±5%) 10 - 30 VDC Power consumption (no load) not available typ. 55 mA / without inverted signals: max. 125 mA Power consumption (no load) typ. 70 mA / with inverted signals: max. 100 mA Permissible load/channel: max. ±20 mA max. ±30 mA Pulse frequency: max. 200 kHz max. 200 kHz Signal level high: min. 2.5 V min. UB-3 V Signal level low: max. 0.5 V max. 2.5 V Rise time tr: max. 200 ns max. 1 µs Fall time tf: max. 200 ns max. 1 µs Short-circuit proof outputs1): yes2) yes Reverse connection protection at UB: no yes Conforms to CE requirements acc. to EN 50082-2, EN 50081-2 and EN 55011, Class B 1) 2) When supply voltage correctly applied Only one channel at a time: (when U B=5V, short-circuit to channel, 0 V, or +UB is permitted.) 37 Incremental shaft encoder you can count on Preferred Type series 5802 Dimensions: Clamping flange Ø58 5 deep Synchronous flange Ø58 5 deep *Rmin. - securely installed: 55 mm - flexibly installed: 70 mm Synchronous flange Ø63,5 5 deep Rectangular flange ¨63,5 Mounting advice: Do not connect encoder and drive rigidly to one another at shafts and flanges! Always use couplings to prevent shaft overload (see accessories chapter). 38 Incremental shaft encoder you can count on Preferred Type series 5802 Terminal assignment: Signal: 12 pin plug Pin: 7 pin plug Pin: 10 pin plug Pin: Colour: 0V 0V +UB Sensor2) +UB A Sensor2) ‚ B ƒ 0 „ Shield 10 11 12 2 5 6 8 1 3 4 PH1) F - D E A - B - C - G A GN G YE B GY H PK C BU I RD J F WH WH or 0,5 mm2 GY PK D E BN BN or 0,5 mm2 RD BU 1) PH = Shield is attached to connector housing The sensor cables are connected to the supply voltage internally and if long feeder cables are involved can be used for adjusting or controlling the voltage at the encoder - If the sensor cables are not in use, they have to be insulated or 0 V Sensor has to be connected to 0 V and UBSensor has to be connected to UB - Using RS 422 outputs and long cable distances, a wave impedance has to be applied at each cable end. Insulate unused outputs before initial startup. 2) Top view of mating side, male contact base: Order code: 7 pin plug 10 pin plug Incremental 12 pin plug 8.5802.XXXX.XXXX Range Pulse rate (e.g. 250 pulses => 0250) Flange and shaft 12 = Clamping flange with shaft Ø10x20 mm 21 = Synchronous flange with shaft Ø6x10 mm MP = Rectangular flange with shaft Ø9.52x22.2 (3/8’’ x 7/8’’) M2 = Rectangular flange with shaft Ø10x20 mm PP = Synchronous flange Ø63.5 with shaft Ø9.52x22.2 (3/8’’ x 7/8’’) P2 = Synchronous flange Ø63.5 with shaft Ø10x20 mm Output circuit and supply voltage 4 = RS 422 (with inverted signals) 5 V supply voltage 7 = Push-pull (without inverted signals) 10-30 V supply voltage Type of connection 1 = axial cable (1 m PVC-cable) 2 = radial cable (1 m PVC-cable) 3 = axial 12 pin plug without mating connector 5 = radial 12 pin plug without mating connector W1) = 7 pin plug, "MIL"-specified without mating connector Y = 10 pin plug, "MIL"-specified without mating connector Accessories Types in stock: 1) Corresponding mating connector to connection type 3 and 5 Art.No 8.0000.5012.0000 8.5802.1275.0200 8.5802.1275.0500 8.5802.1275.1000 8.5802.2143.1000 8.5802.2143.1024 8.5802.2143.2500 8.5802.2143.3600 8.5802.2143.5000 8.5802.2173.1000 8.5802.2173.1024 8.5802.2173.2500 8.5802.2173.3600 9.5802.2173.5000 Corresponding mating connector to connection type W Art.No 8.0000.5052.0000 Corresponding mating connector to connection type Y Art.-Nr. 8.0000.5062.0000 Further accessories see accessories chapter only with output 7 39 Accessories you can count on Measuring wheels Description and applications: Measuring wheels are utilized in combination with pulse generators to measure the lengths of moving measured material in the wood-, paper, metal, textile and plastic industry. Measuring wheels c = 0.2 m No. (261), 291, 241, (234), 211 (start left) Measuring wheels c = 0.5 m No. 512, 542, 552, 562, 592 (start left) When selecting a measuring wheel, the first consideration is the type of material to be measured as this serves as the basis for determining the surface finish or coating of the measuring wheel. Numbers in brackets indicate that the measuring wheel is not available anymore. Surface of the measured material: Recommended profile of the measuring wheel: Plastic (e.g. PVC,PE,...) Paper Cardboard Wood Textile Metals (naked) Varnished surfaces Wire 4, 5 4, 5 1, 3, 4, 5 1, 3, 4, 5 6, 9, 1*, 3* 4, 5 4, 5 5 *knurled profile with restrictions Measuring wheels for metric system: Measuring Profile Coating wheel circumference 0,2 meter 1 diamond knurl 4 plastic (Hytrel), smooth 9 plastic (Hytrel), corrugated 0,5 meter 1 diamond knurl 4 plastic (Hytrel), smooth 5 plastic (Vulkolan), smooth 6 tufted rubber 9 plastic (Hytrel), corrugated Coating hardness Standard bore Measuring width Material of wheel body Weight (appr.) Wheel No. Shore A mm1) 6 6 6 10 10 10 10 10 mm 12 12 12 25 25 25 25 25 aluminium plastic plastic aluminium plastic aluminium aluminium plastic g 40 35 35 350 260 320 320 260 211 241 291 512 542 552 562 592 6 6 13 13 aluminium aluminium 110 100 711 751 85...90 85...90 85...90 85...90 85...90 Measuring wheels for imperial system of measures: 1 foot 1 1 diamond knurl rubber, smooth 70...75 1) other bore diameters on request Order code: 8.0000.3XXX.00XX bore diameter measuring wheel no. Please note: If a measuring wheel is mounted directly on the shaft of a rotary encoder, the pressure force between the measuring wheel and measured material should not exceed the radial shaft load listed on the data sheet of the encoder. In addition, the measuring wheels can only be used for in-house purposes which are not subject to the stipulations of the German calibration code. 112 Accessories you can count on Mounting aids Fastening eccentrics for rotary encoders with synchronous flange: Material: Cu Zn 39 Pb3 Surface finish: galvanized Ni Note: Use at least three fastening eccentrics to mount the encoder. d1 6,8 8,9 14 d2 5 6,5 9 d3 2,8 3,2 5,3 A 3,5 4,9 10 B 2,25 2,9 4,9 C 0,9 1,2 2,5 Mounting advices for hollow shaft encoders: Hollow shaft encoders can be mounted very fast and easily. • Put it onto the drive shaft • Fasten the integrated clamping device • Prevent torque movements The easiest way of torque movement prevention is the use of a simple pin according to DIN 7-Ø 4 mm. for encoder type 8.3600.1XXX.XXXX 8.58XX.2XXX.XXXX 8.90X0.1XXX.XXXX Art.No 8.0000.4200.0000 8.0000.4100.0000 8.0000.4300.0000 Mounting examples: Mounting of a hollow shaft encoder with torque stop and pin. (easiest and fastest mounting) Standard hollow shaft encoders are equipped with the torque stop. Application: If axial play is less than 0.5 mm. Resolution up to 2500 ppr (If no pulse doubling is used) Other mounting possibilities: • With the mounting kit for hollow shaft encoders many mounting variations can be realized. • Flexible mounting sheet metal. Small tolerances of the drive’s shaft can be compensated although torque movements of the encoder are prevented. • Stator coupling. This is the best solution, if resolutions > 2000 ppr have to be realized. Failures in accuracy caused by torque movements of the encoder are prevented and radial, axial and angular plays are balanced. Mounting of a hollow shaft encoder with extended torque stop and long pin. Application: Specially recommended, if there is a large axial play. Due to the bigger mounting radius of the pin, the resolution can be higher (up to 3600 ppr, if no pulse doubling is used) Mounting of a hollow shaft encoder with the stator coupling Application: For higher resolution or if no pin can be used, due to mechanical restrictions. No restriction to resolution 116 Accessories you can count on Couplings Description and application: Manufacturing and installation tolerances as well as the effects of temperature cause alignment errors between shafts in drive engineering which can sometimes lead to extreme overload on the bearings. This may result in increased wear of the bearings and may lead to premature failure of the encoder. By using couplings these alignment errors can be compensated, thereby reducing the load on the bearings to a minimum. A distinction should be made between three different kinds of alignment error: radial, angular and axial displacement. Whilst with torsion-free but bendable shaft couplings, axial shaft displacements produce only static forces in the coupling, radial and angular displacements produce alternating stresses, restoring forces and moments which may have an impact on adjoining components (shaft bearings). Depending on the type of coupling, particular attention should be paid to radial shaft displacement which should be kept to a minimum. Installation instructions: 1. Check shaft for displacement; See technical data for details 2. Align and adjust coupling on shafts. 3. Tighten locking screws carefully. Avoid overtightening. 4. During installation protect the coupling from damage and from overbending. Areas of application: Metal bellows-type couplings (.1101 and .1201) are recommended as an inexpensive type of coupling. They are also suitable for compensating larger angle displacements. Spring washer-type couplings (.1300 and .1400) are used mainly in those cases where high speeds and smaller angle displacements are involved. For applications where electrical insulation between rotary encoder and drive is required, the electrically insulating spring whasher-type coupling should be employed. Cardanic couplings (.1500) are particularly suitable for extreme operating conditions. We recommend these couplings in combination with our 9000/9010 series of encoders. Type max. speed min-1 max. torque Ncm max. radial displacement mm max. angle displacement degree max. axial displacement mm Torsion spring parameter Ncm/Grad Moment of inertia g cm2 Weight appr. g Material: Flange bellows or spring washer/casing Diameter d/d1 from...to mm max. tightening torque of locking screws Ncm 1) 2) 1101.XXXX 12000 150 ± 0.2 ± 1.5 ± 0.7 1200 5.5 14 Al Stainless steel 3...12 1201.XXXX 12000 50 ± 0.2 ± 1.5 ± 0.5 360 1.2 6 Al Stainless steel 3...9 1300.XXXX 12000 20 ± 0.4 ±2 ± 0.4 160 25 23 Al cu Mg Pb Cu Sn 6 n.p.1) 3...8 1400.XXXX 12000 80 ± 0.4 ±3 0.4 230 19 14.5 Zinc diecasting PA 6.6 20% f.g.2) 4...10 1500.XXXX 19000 3200 ± 0.2 ± 1.1 ±1 234 61 50 Al Hytrel 4...14 150 70 80 80 134 Accessories Technical data: Nickel plated Fibre glass 119 Accessories you can count on Couplings Bellows-type coupling Spring washer-type coupling Art.No: 8.0000.1101.XXXX Art.No: 8.0000.1300.XXXX Dismount slot Bellows-type coupling Spring washer-type coupling electr. insulating Art.No: 8.0000.1400.XXXX Art.No: 8.0000.1201.XXXX Cardanic coupling Dismount slot Art.No: 8.0000.1500.XXXX Order code: 8.0000.1X00.XX XX Bore diameter d Bore diameter d1 (e.g.: d1 = 10 mm and d = 12 mm ⇒ XXXX.XXXX.1012) Type of coupling Standard bore diameter in mm 1 Bellows-type (large) 2 Bellows-type (small) 3 Spring washer-type 4 Spring washer-type* 5 Cardanic coupling* 12/12 8/6 6/6 10/10 12/12 * = electrically insulating Other bore diameters and types of coupling on request. 120 12/10 6/6 6/4 10/6 12/10 10/10 6/4 6/6 4/4 6/6 10/10 4/4
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