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RWT450

1. for sensor and electronics See Note 7 below Ingress Protection IP 65 connectors in lead b w head amp electronics Cavity D connectors in lead b w sensor amp electronics Link Cable gt 1 5m gt Notes B A C U D E V Q F 0 G 0 H 0 J 0 S 0 L gt M 0 N 0 R Optional feature Remarks User to specify RPM FSD 3 pulses rev User to specify Power FSD User self selectable 3 pulses rev User self selectable From sensor head to electronics module In place of option B In place of option B User self selectable In place of options A B amp C In place of options A B amp C In place of options A B amp C Current output is user selectable and in place of Voltage output However user can reselect a Voltage output if required Note 6 In place of RS232 Consult factory for maximum speed allowances Consult factory for length 6 2x analog channels available Default settings are Channel 1 voltage current torque Channel 2 voltage current speed or power if ordered 7 Transducers fitted for IP65 will have running speeds considerably reduced increased drag torque and accuracy can be affected RWT450 460_en ALTHEN GmbH 10 2012 rev 1 01 ALTHEN GmbH Mess und Sensortechnik Frankfurter Str 150 152 49 6195 70060 65779 Kelkheim Germany amp 49 6195 700666 http www althensensors com AL
2. For user to self wire For user to self wire For connecting RWT to user s system via 15 pin D connector For connecting RWT to user s system via 15 pin D connector For connecting RWT to PC via RS232 Also needs Digital Lead ACC4 to connect to RWT For connecting RWT to PC via USB Option G or RS232 Also needs Digital Lead ACC4 to connect to RWT For connecting RWT to PC via CANbus Option H Also needs Digital Lead ACC4 to connect to RWT For connecting RWT to PC via USB Option G or CANbus Option H Also needs Digital Lead ACC4 to connect to RWT Remarks Purpose Display readout For providing 12 32 Vdc Torque Monitoring Software Power Power Page 5 6 MESS UND SENSORTECHNIK When you order a Torque Transducer please note that any torque FSD is possible between ranges please specify rated torque and options using the following format A basic transducer with For example RWT 451 100Nm CL torque and speed outputs rated and calibrated to 100Nm FSD 10V and IP65 protection Your transducer requirement RWT Max speed if applicable Connector amp Lead options if applicable See over Additional related products if applicable See over Glossary of terms and definitions used in this datasheet Surface Acoustic Wave SAW An acoustic wave travelling along the surface of a material having some elasticity with amplitude that typically decays e
3. VIEW ON BASE Data parameters measured at 20 C We reserve the right to change specification and dimensions without notice RWT450 460_en ALTHEN GmbH 10 2012 rev 1 01 Page 3 6 ALTHEN GmbH Mess und Sensortechnik Al THEN Frankfurter Str 150 152 49 6195 70060 http www althensensors com 65779 Kelkheim Germany amp 49 6195 700666 info althen de MESS UND SENSORTECHNIK RWT450 460 Series Torque Transducers Standard Range e Standard feature RWT450 460 Option Series Code Torque Speed Power Outputs RWT450 RWT460 Torque only 450 460 Torque amp Speed low resolution 451 Torque amp Power 453 Torque amp Speed low resolution or Power 461 Standard features Voltage output 5V FSD Fixed e Voltage outputs from 1V to 10V FSD and unipolar Variable RS232 output Torque Averaging Torque Peak Self Diagnostics Internal temperature measurement Deep grooved shielded bearings with oil lubrication Ingress Protection IP 54 Link Cable 1 5m e Optional features Voltage output 1V FSD Fixed Voltage output 10V FSD Fixed Customer specified voltage output Fixed Current output 0 20mA Fixed Current output 4 20mA Fixed Current output 12 8mA Fixed ece gt gt o gt 2 9 gt Current output 0 20mA 4 20mA amp 12 8mA Variable USB2 0 full speed 12 Mbps Digital output CANbus output High Speed Bearings gt Sealed Bearings gt Ingress Protection IP 65
4. kNm High speeds available on request m Technology TorqSense patented technology is the measurement of the resonant frequency change in frequency dependent Surface Acoustic Wave SAW devices caused when strain is applied The signal is coupled via a non contact RF rotating couple from the shaft to a fixed pick up A separate electronics module enables the resonant frequencies to be measured and offer user selectable features digital outputs and diagnostics SAW devices are not affected by magnetic fields US Patents US5585571 US6478584 RWT450 460_en ALTHEN GmbH 10 2012 rev 1 01 ALTHEN GmbH Mess und Sensortechnik Frankfurter Str 150 152 49 6195 70060 65779 Kelkheim Germany D TORQUE POSITION ROTARY ANGLE TILT ACCELER A S 49 6195 700666 af info althen de MESS TION VIBRATION RATE SIGNAL CONDITIONER DATALOGGER ATION VIBRATION RATE SIGNAL CONDITIONER DATALOGGER Software TorqView is an easy to use advanced torque monitoring software available to assist data recording and instrumentation displays that interface with Windows based PCs Features include 3 types of display text files compatible with Matlab and Excel and Real time chart plotting See TorqView datasheet for more details LabView VIs are available for users to design their own process control applications DLLs are also available for users to write their own custom software TorqSense RW
5. DOE CCI IPE 1 OD r fitnwWwJVUriL k AS oe RWT450 RWT460 Pulley Sprocket Torque Transducer Measurement ranges 50 Nm to 10000 Nm Linearity 0 5 Voltage and current outputs RS232 Supply voltage 12 32 VDC TorqSense Digital RW1T450 460 series pulley sprocket transducers with separate electronics now offer cost effective non contact digital rotary torque measurement using Surface Acoustic Wave technology suitable for torque monitoring and process control on any belt chain driven machinery TorqSense transducers and their technology are particularly appropriate for OEM applications The new TorqSense RWT450 460 torque sensors replace the RWT350 360 series and feature all cnew electronics that have produced significant performance gains in resolution frequency response reduced sensor current consumption and faster digital data throughput Transducer overload has also been increased to 300 Benefits e Direct replacement for standard pulley sprocket e Low inertia High Speed capability because electronics are not fixed onto shaft Non contact brushless measurement High bandwidth 10 kHz 300 safe mechanical overload High accuracy and resolution Excellent noise immunity Separate digital electronics Operates both statically and dynamically clockwise anti clockwise e Any full scale torque can be specified within standard range 50Nm through to 10 000Nm Consult factory for ranges greater than 10
6. T450 series transducers offer e Fixed voltage or current analog outputs one for torque and the other for speed or power for interfacing with legacy analog instrumentation BIT Self diagnostics for letting the manufacturer know that the transducer s torque speed ratings and calibration due date have not been exceeded Simple Sensor status output pin Sensors to monitor shaft temperature for better compensation and accuracy Whereas TorqSense RWT460 series transducers offer Digital outputs such as RS232 CANbus and USB for interfacing with modern instrumentation and laptops Digital input for configuring transducer via PC 2 x user selectable voltage or current analog outputs one for torque and the other for speed power or peak torque for interfacing with analog instrumentation Transducer configuration software to allow user to changes transducer variables BIT Self diagnostics for letting users know data is trustworthy that the transducer s torque speed ratings and calibration due date have not been exceeded Simple Sensor status output pin Sensors to monitor shaft temperature for better compensation and accuracy Ability to connect up to 10 transducers using USB Page 1 6 http www althensensors com AL i Fl E K ND SENSORTECHNIK Data Specification Preliminary Parameter Condition Data Units RWT450 460 Torque measurement system Measurement method Strain Dependent Surface Acoustic Wave R
7. a co N a info althen de Page 4 6 zoo UND SENSORTECHN f Connector and Lead Options Connectors amp Leads Analog Connector 12 Pin Lumberg female Digital Connector 12 Pin Lumberg male Analog Lead Length 2 5 m 12 Pin Lumberg female to 15 way D type connector female Digital Lead Length 2 5m 12 Pin Lumberg male to 15 way D type connector male Digital Lead Adapter Length 1m 15 Way D type female to RS232 and Power Connectors Digital Lead Adapter Length 1m 15 Way D type female to RS232 USB and Power Connectors Digital Lead Adapter Length 1m 15 Way D type female to CANbus and Power Connectors Digital Lead Adapter Length 1m 15 Way D type female to CANbus USB and Power Connectors Additional related products Transducer Display ETD AC Mains Adapter Power Supply Transducer Signal Breakout Unit TorqView D9 4 12 Pin Lumberg 15 Way D Type connects to ACC4 15 Way D Type connects to ACC4 RWT450 460_en ALTHEN GmbH 10 2012 rev 1 01 RWT450 460 Series RWT450 Q ALTHEN GmbH Mess und Sensortechnik Frankfurter Str 150 152 65779 Kelkheim Germany 49 6195 70060 49 6195 700666 ACC 3 amp 4 Ib ACC 6or9 RWT460 0 0 Option Code ACC 1 ACC 2 ACC 3 ACC 4 ACC 5 ACC 6 ACC 8 ACC 9 http www althensensors com AL a co rd a info althen de Remarks Purpose
8. aging algorithm works as a low pass filter the more averaging that is applied the lower the frequency response Therefore each Torqsense system should be optimised to the customers requirements by choosing the right combination of accuracy frequency response Please see relevant part of the Datasheet and User Manual We reserve the right to change specification and dimensions without notice RWT3437R Rev2 RWT450 460_en ALTHEN GmbH 10 2012 rev 1 01 Page 6 6 ALTHEN GmbH Mess und Sensortechnik Frankfurter Str 150 152 49 6195 70060 __sihittp www althensensors com AL J A G N 65779 Kelkheim Germany amp 49 6195 700666 c info althen de MESS UND SENSORTECHN
9. esonators interrogated by an incremental electronic scanning method amp 2 below From 500 100000 lof in Rotation speed angle of rotation measurement system Measurement method Magnetic pick off sensor Direct output signal Pulse output direct from opto switch TTL 5V pier output is independent of any analog or digital Digital Processing Techniques Processing Method Update rate for analog and digital outputs a Mode 1 Slow Method 3 Pulse Rev Magnetic Sensor Speed Sensor Frequency Count 1 Hz Rotational speed max See Note 3 Consult factory Temperature Measurement method IR temperature sensor monitoring actual shaft temperature Temperature accuay T S S SCSC CstCSTSC CSCTCOC COCOCOCCCCSYST Reference temperature Tar OOOO a OOOO y Operatingrange ATo OOOO O S o O O SS Storagerane ats OOOO O S y y o O Specifications e E T E fryers O O S o OO y a PResoution SSS S i y o O as Coe a A A E RWT450 Series Transducers ONLY 20 C SM See Note 4 RWT460 Series Transducers ONLY Frequency response mooo aso 2250 1125 se 21 mo w m Analog output Output voltages Options available 1 5 10 Unipolar RWT450 Series default setting is 5Vdc de Torque Speed Power RWT460 Series output voltages are user selectable Output currents Options available 4 20mA 0 20mA and 12 8mA Output type RS232 standard USB 2 0 full speed 12 Mbps optional CANbus o
10. ptional Allowed residual ripple of supply voltage Vripple 500 above nominal supply voltage mVp p Electromagnetic compatibility EMC compatibility EN 61326 2006 Accuracy 1 Any torque FSD is possible between ranges please specify max rated torque 2 Max rated torque should not be exceeded 3 Please consult factory for applications requiring rotational speeds that exceed maximum figures given Transducers fitted for IP65 will have running speeds considerably reduced increased drag torque and accuracy can be affected SM Static Mode Dynamic values will depend upon user application and has to be adjusted accordingly Digital averaging can be configured by user to optimise accuracy frequency response for specific user applications Digital averaging default setting is N 16 For details see User Manual a Data parameters measured at 20 C We reserve the right to change specification and dimensions without notice RWT450 460_en ALTHEN GmbH 10 2012 rev 1 01 Page 2 6 ALTHEN GmbH Mess und Sensortechnik Al THEN Frankfurter Str 150 152 49 6195 70060 http www althensensors com 65779 Kelkheim Germany amp 49 6195 700666 f info althen de MESS UND SENSORTECHNIK Dimensions 5 KNm please consult factory for other sizes Q f z e 5 1 3 gt ra Mi x 18 DP PIN 3 POS COUPLING HOUSING RW1T450 460 Series Electronics Module M3 x 1C DPPIN 4 POS
11. tude of the system s response measured in dB There are two ways of characterising the system s frequency response e 0 1dB frequency range where the output magnitude of the signal is different to the input magnitude of the signal by not more then 0 1dB practically absolutely identical e 3dB frequency range where the output magnitude of the signal is 0 707 of the input signal This is a common standard for most applications unless it specifically says otherwise This standard is also used to characterise the TorqSense system s frequency response Accuracy The degree of conformity of a measured or calculated quantity which will show the same or similar results Accuracy of the overall TorqSense system is limited by the combined error of several factors such as linearity hysteresis temperature drifts and other parameters affecting measurements If errors in the system are known or can be estimated an overall error or uncertainty of measurement can be calculated Digital averaging The application of algorithms to reduce white noise In any electronic system electronic white noise is mixed with the signal and this noise usually limits the accuracy To reduce the influence of white noise and increase the accuracy of the system different averaging algorithms can be applied In the TorqSense system a flying digital averaging technique is applied to reduce the whit noise commensurate with the level of accuracy required However as any aver
12. xponentially with the depth of the substrate Strain dependent SAW resonators A type of elastic SAW device which changes its resonant properties when it is subjected to axial strain compression TorqSense uses this principle which is protected by a number of patents Incremental Electronic Scan IES The most successful and precise method for interrogating strain dependent SAW resonators The IES interrogation method uses a processor controlled frequency synthesiser to excite the SAW resonators over a defined range of frequencies and measure the reflected signal TorqSense uses this patented method Resolution of the IES method The minimum measurable number corresponding to the stress strain sensitive resonance point of the SAW resonator The value is limited by following the factors e frequency resolution of the synthesiser which is 1000 times greater then overall resolution of the system e relationship between frequency response and resolution Increments of the resolution will proportionally decrease the system s frequency response TorqSense systems are optimised for the best performance that suits most applications However on the RWT440 series models customers do have the capability to adjust the system performance Frequency response of the IES method The measure of the TorqSense system s response at the output to a signal of varying frequency at its input The frequency response is typically characterised by the magni

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