TORQSENSE® - Tormatic AS
Contents
1. e SENSE _RWT450 460 series Pulley Sprocket _Torque Transducer xP A jet ght Pu a ES 7 AA a SFr y MIA Tel 44 0 1869 238400 Fax 44 0 1869 238401 E S ENSO R Apollo Park Ironstone Lane Wroxton Banbury Oxon UK OX15 6AY wa SH KASS DA TEC H N O LOGY Email info sensors co uk Web www sensors co uk QS SENSOR NY SE TECHNOLOGY TORCE 3 8 3 Digital RWT450 460 series Torque Transducer TorqSense Digital RWT450 460 series pulley sprocket transducers with seperate 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 TorgSense 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 new 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 e Non contact brushless measurement e High bandwidth 10kHz e 300 safe mechanical overload e High accuracy and resolution E2. 2 below From 500 100 000 lbf 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 square wave output is independent of any analog or digital processing Digital Processing Processing Method Update rate for analog and digital outputs Techniques 3 Pulse Rev Magnetic Speed Sensor Mode 1 Slow Method 1 Hz Frequency Count Temperature accuracy C ERP PS temperature Ter Operating range ATo O ORO Storage range ATs 20H FO Specifications Linearity OS Hysteresis FS Resolution FS Repeatability FS Frequency response 101 Note 4 RWT460 Series Transducers ONLY Frequency response 10 000 4500 2250 1125 Accuracy 20 C SM See 1 0 7 0 5 0 5 0 5 0 5 0 5 FS 7 Note 4 2 4 8 16 32 6 128 N Digital averaging See Note 5 Output voltages Options available 1 5 10 Unipolar RWT450 Series default setting is 5Vdc Vdc Torque Speed Power RWT460 Series output voltages are user selectable Load impedance Output currents Options available 4 20 0 20 12 8 Torque Speed Power RWT460 Series output currents are user selectable 4 20mA Loop resistance Should not exceed 400 Digital output RWT460 Series Transducers ONLY N N Output type RS232 Standard USB 2 0 full speed 12 Mbps optional CANbus optional Sampling r
3. G CANbus output o H In place of RS232 High Speed Bearings LA o J Sealed Bearings EE E e e le o Ingress Protection IP 65 for sensor and electronics See Note 7 below se a lead OIW head amp electronics electronics Link Cable gt 1 5m ES Consult factory for length Note 6 2 x analog channels available Default settings are Channel 1 voltage current torque Channel 2 voltage current speed or power if ordered Note 7 Transducers fitted for IP65 will have running speeds considerably reduced increased drag torque and accuracy can be affected speed allowances Data parameters measured at 20 C Sensor Technology Ltd reserves the right to change specification and dimensions without notice Sensor Technology Ltd 2012 RWT3437R Rev2 RWT450 460 Series Torque Transducers Connector and Lead Options RWT450 460 Remarks Purpose Series Code Connectors leads RWT450 RWT460 AP E O E oe 12 Pin Lumberg female 12 Pin Lumberg male Analog Lead Length 2 5m For connecting RWT to user s 12 Pin Lumberg female to 15 way D ACC 3 system via 15 pin D connector type connector female Digital Lead Length 2 5m For connecting RWT to user s 12 Pin Lumberg male to 15 way D ACC 4 system via 15 pin D connector type connector male Digital Lead Adapter Length 1m For connecting RWT to PC via 15 Way D type female to RS232 and ACC 5 RS232 Power Connectors Also need
4. Ltd reserves the right to change specification and dimensions without notice Sensor Technology Ltd 2012 RWT3437R Rev2 RWT450 460 Series Torque Transducers Standard Range e Standard feature Optional feature ae Series Code Torque Speed Power Outputs ___RWA50__RWT960 J Torqueonly 450 460 Torque amp Speed Low Resolution a O E 270 Specify RPM FSD 3 pulses rev Torque amp Power 453 Specify Power FSD Torque amp Speed Low Resolution o User self selectable or Power 3 pulses rev Standard features Voltage Output 5v FSD is Output 5v FSD Unipolar ATTE o o e y G Torque Averaging o Jo o l e Jo o Torque Peak Sef Diagnosis p tt o Internal Temperature Reading Deep grooved shielded bearings with oil lubrication Ingress Protection Ingress Protection IP 54 54 Link Cable 1 5m sensor A to A module Optional features o S o e ee Voltage Output 10vFSD_ gt Cn place of Option Unipolar voltages ser to specify Current Output 0 20mA gt D InplaceofOptiomsAB8C _ Current Output 4 20mA gt E InplaceofOptimsAB8C Current Output 12mA 8mA______ o In place of Options ABC _ Current output is user Current Output 0 20mA 4 20mA A ead Wie ar Voltage output However amp 12mMA 8mA user can reselect a Voltage output if required Note 6 USB2 0 full speed 12 Mbps Digital output
5. ate si O AS Power suppl Nominal voltage Vs Ee 12 to 32 max Current consumption Is 230 max Power consumption Ws J o o ps supply voltage Viippie above nominal supply voltage Electromagnetic compatibility OOO Electromagnetic compatibili EMC compatibility A EN 61326 2006 PA Note 1 Any torque FSD Is possible between ranges please specify max rated torque Note 2 Max rated torque should not be exceeded Note 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 Note 4 SM Static Mode Dynamic values will depend upon user application and has to be adjusted accordingly Note 5 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 Data parameters measured at 20 C Sensor Technology Ltd reserves the right to change specification and dimensions without notice Sensor Technology Ltd 2012 RWT3437R Rev2 RWT450 460 Series Torque Transducers Dimensions 5KNm Please consult factory for other sizes PULL MOLNTINS a Ey i e jar F MIG x 18 DPPIN 3 POS COUPLING HOUSING RWT450 460 Series Electronics Module Mx 10 DFPIN 4 POR Data parameters measured at 20 C Sensor Technology
6. e estimated an overall error or uncertainty of measurement can be calculated e 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 white noise commensurate with the level of accuracy required However as any averaging 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 customer s requirements by choosing the right combination of accuracy frequency response Please see relevant part of the Datasheet and User Manual Data parameters measured at 20 C Sensor Technology Ltd reserves the right to change specification and dimensions without notice Sensor Technology Ltd 2012 RWT3437R Rev2
7. he 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 RWT460 series models customers do have the capability to adjust the system performance e Frequency response of the ES 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 magnitude 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 e 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 b
8. onfiguring 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 e Simple Sensor status output pin e Sensors to monitor shaft temperature for better compensation and accuracy Ability to connect up to 10 transducers using USB TORQUIAWA 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 RWT3243R RWT450 460 Series Torque Transducers Data Specification PRELIMINARY Parameter Condition ata Units EET RWT450 460 Torque measurement system Measurement method Strain Dependent Surface Acoustic Wave Resonators interrogated by an incremental electronic scanning method N Torque range See Notes 1 From 50 10 000 m amp
9. ormat A basic transducer with CL torque and speed outputs rated and calibrated to 100Nm FSD 10v and IP65 protection RPM For example RWT Your transducer requirement RWT 451 100Nm Connector Lead options if applicable See over Max speed if applicable Additional related products if applicable See over Glossary of terms and definitions used in this datasheet e Surface Acoustic Wave SAW An acoustic wave travelling along the surface of a material having some elasticity with amplitude that typically decays exponentially with the depth of the substrate e 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 e 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 e 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 t
10. s Digital Lead ACC4 to connect to RWT Digital Lead Adapter Length 1m For connecting RWT to PC via 15 Way D type female to RS232 USB ACC 6 USB Option G or RS232 and Power Connectors Also needs Digital Lead ACC4 to connect to RWT Digital Lead Adapter Length 1m For connecting RWT to PC via 15 Way D type female to CANbus and CANbus Option H Power Connectors Also needs Digital Lead ACC4 to connect to RWT Digital Lead Adapter Length 1m For connecting RWT to PC via 15 Way D type female to CANbus USB USB Option G or CANbus and Power Connectors Option H Also needs Digital Lead ACC4 to connect to RWT RWT450 460 Series Torque Transducers Additional related products ode Remarks Purpose Transducer Display ETD Display readout AC Mains Adapter Power Supply PSU 1 For providing 12 32Vdc Transducer Signal Breakout Unit SBU 2 Torque Monitoring Software ACC 3 amp 4 o co oO o o go Y 12 Pin Lumberg RS232 ACC 5 CANbus ACC 8 15 Way D Type connects to ACC4 Power ACC 6 or 9 15 Way D Type connects to ACC4 Data parameters measured at 20 C Power Sensor Technology Ltd reserves the right to change specification and dimensions without notice Sensor Technology Ltd 2012 RWT3437R Rev2 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 f
11. xcellent noise immunity e Separate digital electronics e Operates both statically and dynamically clockwise anti clockwise e Any full scale torque can be specified within standard range 50Nm through to 10 000Nm e Lifetime warranty Consult factory for ranges greater than 10KNm High speeds available on request 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 TorqSense RWT450 series transducers offer e Fixed voltage or current analog outputs one for torque and the other for speed or power for interfacing with analog instrumentation e BIT Self diagnostics for letting the manufacturer know that the transducer s torque speed ratings and calibration due date have not been exceeded e Simple Sensor status output pin e 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 c
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