User`s Manual - ASA-RT
Contents
1. ASA RT srl Strada del Lionetto 16 a 10146 Torino ITALY Tel 39 011 5360884 r a Fax 39 011 19835705 E_mail info asa rt com Url www asa rt com ADX Torque measurement unit User s Manual Ver 2 10 From FW 1 20 on 1 1 1 Introductioni eer ete ier Lala ei 3 2 Installation and dazio 4 Z SEUI lla 4 2 2 Instructions for the electromagnetic compatibility ceeeeeeeeeecneeceeeeeeeeeneeenaeenes 4 2 3 lea 4 i Chessa 5 3 TechnicalcharacteristioS pai rara 6 A Electrical cOnnecio iii 7 3 SRI 8 5 1 Analog outputs zeroing Calibration iii 9 5 2 Signals on th MUSA Opus 9 5 3 Dip switches configuration rai aaa 9 6 filare 11 6L ae 11 6 2 Calibration of the reading sail rara 14 6 3 Piller On The MEASUPEMGNE 4 c c9sccvesnarecanniszeradndasnsawuadiasueteass earo eaS ES EESE EE a Ean 14 GA Anilo output mill scale 14 6 5 Thresholds outputs handling oe Lean 15 2 2 1 Introduction ADX is a contactless system to measure the torque on rotating shafts and the force on rotating systems Through a transformer a magnetic coupling between a stator and one or two rotor s supplies power to one or two electric card s solidly placed with the rotors to read the strain gages bridges Stator a Rotor Tetto Example Link SSA p x i Torque Acquisition D LI i measurement2. measured tension By applying to the measurement channel a known torque and setting the value to be displayed in correspondence with this torque the system contemporaneously acquires the channel reading and scale down all further readings to display the set value on the parameter in correspondence of the above mentioned torque 10 9999 Measurement channel 1 sensitivity 1 9999 Measurement channel 2 sensitivity By this parameter to be expressed in mV V 1000 it is possible to initialise a gain value of amplification in order to bring theoretically to 10 V the reading of the load cell s when the sensor is loaded with the nominal load with unitary displaying gain Measurement channel 1 displaying gain Measurement channel 2 displaying gain In order to allow the system calibration with the best possible resolution sensitivity 1000 9999 this parameter effects a second scale down of the read value without any impact on the calibration The value of 1000 indicates the unitary gain 10 9999 Position of the decimal point on the upper display Position of the decimal point on the lower display It is possible to set the number of digit to be displayed after the decimal point the above mentioned point is exclusively aesthetic and it must not be considered in the sample or thresholds measurement 0 3 Working mode of the channel 1 threshold outputs Working mode of the channel 2 threshold outputs The management mode of the th
3. Baud Dip 5 Dip 6 BaudRate CanOpen OFF OFF 125 KBaud ON OFF 250 KBaud OFF ON 500 KBaud ON ON 1000 KBaud 10 10 6 Advanced functioning 6 1 Parameters The unit has a set of parameters suitable for its calibration and personalization To enter these parameters it is necessary to Press the PROG touch for few seconds If the system has not a password Par 1 0 Par 1 will appear on the upper display and the value of parameter 1 will appear on the lower display now it is possible to change the parameters If the system has a password Par 1 0 Par 0 will appear on the upper display and the value of parameter 0 will appear on the lower display By entering the right password through the touches and and giving the confirmation with J touch parameter 1 will be set and it will be possible to change the parameters If with touch a wrong password value is confirmed parameter 2 will be set and it is possible to operate only in visualisation mode From now on the prameters are managed in the following way On the upper display ParXX appears XX indicates the number of the parameter which is visualised at present Through and touches it is possible to verify the value of parameter visualised at present By pressing the J touch it is possible to record the new value of the parameter a flashing of the two displays indicates that the
4. gt RS485 proprietary ASCII protocol 1 gt RS485 proprietary binary protocol 2 Profibus DP or CANopen according to the supplied expansion card NOTE This parameter can only be applied when the unit is supplied with an optional communication module RS485 Profibus DP or CANopen 13 13 6 2 Calibration of the reading gain In order to carry out a calibration of the system and to obtain a value displayed according to a scale useful for the user it is possible to use one of the following options 1 Setting of a sample value in correspondence with a known load e Effect the measurement channel zeroing e Apply the known load force or torque e Set on sample measurement parameter the value to be displayed the value of sensitivity parameter will automatically change in an appropriate way From now on the system will carry out a measurement elaboration displaying the set value in correspondence of the present load and proportionally scaling down all readings 2 Setting of the sensitivity value of the measurement value e Carry out the measurement channel zeroing e Set the sensitivity of the measurement channel the value of the sample measurement parameter will automatically change in an appropriate way In this case the system will adapt the gains in order to obtain the reading of 9999 in correspondence of the nominal load To have a different reading in correspondence of the nominal load it is
5. on card rotating shafts Link B f 27 f i 4 Rotor As regards the torque measurement on rotating shafts each of them is instrumented with a complete strain gages bridge and an acquisition card with 24 bit ADC and a winding which acts as rotor If the ADX unit is used to measure the force on a rotating system it will be supplied with an acquisition card built in the load cell body suitable to carry out the measurement in a rotating environment The stator of the transformer and the ADX F management unit are placed on the fixed side of the system Stator ADX F All operating parameters of the unit can be programmed through the key board and the display zero gain full scale in engineering unit pass band of the filter on the signal etc in conditions of standard functioning the torque measurement of each shaft is displayed according to the present parameters Moreover the unit has digital I O to be used for the remote zeroing and torque supervision outputs of operative channel and threshold alarms analog outputs in tension or current optionally the unit can be supplied with CANopen or Profibus interfaces 3 3 2 Installation and diagnostics 2 1 Security instructions In order to have an installation in security conditions it is necessary to follow besides the existing regulations some simple rules All metallic parts of the plant must be connected to earth Control the external devices relate
6. d to security before effecting the plant working process check Test and maintenance of the plant must always be done by qualified staff Before starting the system make sure that it won t cause dangerous situations for people and things and for the machine itself Before changing any parameter check the correctness of the parameter itself and value which could be the real effect of this change 2 2 Instructions for the electromagnetic compatibility The electromagnetic noises EMI can cause the bad functioning of this or other devices located nearby compromising the plant working Therefore it is necessary during the installation to take all precautions to limit the above mentioned noises produced by parts constituting the plant itself A correct connection of all devices to earth reduces the problems caused by EMI in particular it is important to carefully follow the regulations indicated in the here under paragraphs 2 3 Connections to earth Connect to earth all metallic parts of the units constituting the plant Avoid serial connection to earth but effect single connections of each units to the main earth The main earth bar must be connected to the metallic cabinet and to the general earth well 4 4 2 4 Cables shielding The cables corresponding to the analog signals must be shielded To avoid the shield having currents circulation which could make it useless or even a noising source the equipotentiality of the ma
7. n case of stopping errors 2 Parameter 1 Pre alarm and alarm threshold Output 1 O 1 if it measures lt high threshold parameter hysteresis parameter 1 0 if it measures gt high threshold parameter hysteresis parameter Output 2 0 1 if it measures lt low threshold parameter hysteresis parameter 1 0 if it measures gt low threshold parameter hysteresis parameter 3 Parameter 2 Thresholds for the output from the working field Output 1 0 1 if it measures lt high threshold parameter hysteresis parameter 1 0 if it measures gt high threshold parameter hysteresis parameter Ouput 2 0 1 if it measures gt low threshold parameter hysteresis parameter 1 0 if it measures lt low threshold parameter hysteresis parameter Measurement Measurement OUTPUT 1 gt 0 OUTPUT 2 gt 0 OUTPUT 1 gt 0 OUTPUT 2 gt 0 Time Time If mode parameter 1 If mode parameter 2 15 15 ASA RT srl Strada del Lionetto 16 a 10146 Torino ITALY Tel 39 011 5360884 r a Fax 39 011 19835705 E_mail info asa rtcom Url www asa rt com 16 16
8. obtained by pressing contemporarily the Zero touch and the touch for channel or the for at least 3 seconds the zeroing must be done after 10 min from the switching on 5 2 Signals on the digital outputs The digital outputs are managed as follows oe 99 OUT1 Contact of A channel low threshold NC OUT2 Contact of A channel high threshold NC OUT3 Active channel A NC OUT4 Contact of B channel low threshold NC OUTS Contact of B channel high threshold NC OUT6 Active channel B NC 5 3 Dip switches configuration 979 touch for channel 2 On the basic card there are 10 dip switches with the following functions 1 2 3 Node identifier on link 4 RS485 CanOpen Profibus 5 6 RS485 CanOpen working pass band 9 Polarity inversion of channel A 10 Polarity inversion of channel B Dip 1 Dip2 Dip3 Dip4 Dip5 Dip 6 Node identifier OFF OFF OFF OFF OFF OFF Reserved ON OFF OFF OFF OFF OFF Node number 1 OFF ON OFF OFF OFF OFF Node number 2 ON OFF ON ON ON ON Node number 61 OFF ON ON ON ON ON _ Node number 62 ON ON ON ON ON ON _ Reserved Dip 5 Dip 6 RS485 BaudRate OFF OFF 9600 Baud ON OFF 19200 Baud OFF ON _ 38400 Baud ON ON 57600
9. password has been rightly recorded By pressing the PROG touch the following parameter is set if the last parameter has been entered the PROG touch allows to escape the visualisation mode By pressing the ESC touch it is possible to escape the parameterisation mode Parameters of the ADX unit Par 1 Par 2 Par 3 Password 0 9999 Protection password to enter the writing modality of the further parameters if set to 0 no protection is managed ADC full scale acquisition for channel 1 reading ADC full scale acquisition for channel 2 reading Full scale acquisition on the remote card 1 gt 7 812mV V 2 gt 3 906 mV V 3 gt 1 953 mV V 1 3 11 11 Par 4 Par 5 Par 6 Par 7 Par 8 Par 9 Par10 Parl1 Par12 Par13 Par14 Par15 Parl6 Par17 Par18 Par19 Par20 Par21 Average window for channel 1 reading Average window for channel 2 reading Number of immediate readings of the measurement of each channel to be used in the mobile average window in order to obtain a higher stability in the final reading 1 250 Zero offset of the channel 1 measurement Zero offset of the channel 2 measurement Calibration value for the measurement zeroing this value is automatically set by the system using the zeroing control 0xC000 0x3FFF Channel 1 sample measurement Channel 2 sample measurement Calibration value of the device to obtain a reading dimensionally in accord with the
10. possible to act on the displaying value 6 3 Filter on the measurement The ADX unit carries out the measurement on each channel with a 50 Hz frequency It is possible to apply a mobile average window in order to lower possible unwilling reading noises The number of samples to use to carry out the above mentioned average is the one set in the parameter average window with the value 1 the instantaneous reading will be obtain with higher values a more filtered reading will be proportionally achieved 6 4 Analog output full scale Through this parameter it is possible to set the value of the displayed measurement corresponding to the maximal value of the analog output all intermediate tension values will be scaled down according to the maximal one The unit is supplied with this parameter set to 9999 i e in order to have correspondence between what is displayed and the tension on the analog outputs if this value is changed the correspondence is cancelled 14 14 6 5 Thresholds outputs handling The two digital outputs of the ADX unit are dealt as alarm thresholds outputs towards a machine supervisor In normal conditions they are at a high level 24 Vdc while they are zeroed to indicate an alarm situation It is possible to choose among three different kinds of handling for these outputs according to the value in parameter modality 16 o 17 1 Parameter 0 the outputs are always set to value 1 except i
11. reshold outputs is set here see paragraph 6 5 0 2 Alarm value of channel 1 low threshold Alarm value of channel 2 low threshold at Measurement value producing the signal of low threshold see paragraph 6 5 Alarm value of channel 1 high threshold Alarm value of channel 2 high threshold eee ead Measurement value producing the signal of low threshold see paragraph 6 5 12 12 Par22 Par23 Par24 Par25 Par26 Par27 Par28 Par29 Par30 Par31 Hysteresis for channel 1 thresholds management Hysteresis for channel 2 thresholds management 0 9999 Tolerance limit on the thresholds management see paragraph 6 5 Value of the measurement of channel 1 analog output full scale 0 9999 Value of the measurement of channel 2 analog output full scale Value of the measurement corresponding to the full scale value of the analog output the output will proportionally change from zero up to the full scale with a measurement from zero up to this parameter Offset for the channel 1 analog output Offset for the channel 2 analog output Calibration offset for the analog output signal normally calibrated in factory OxF FF 0xFFF Gain for channel 1 analog output Gain for channel 2 analog output 1 9293 Calibration gain for the analog output signal normally calibrated in factory Response delay on serial commands 0 9999 Response delay on the serial command in milliseconds Protocol type 0 2 0
12. sses of the plant cabinet system must be assured by special connections conveniently sized The connections of the digital I O and the 24V power supply can be realized with unshielded cables 5 5 3 Technical characteristics The main technical characteristics of the unit are External power supply 24Vdc 10 Wireless interface towards one or two independent secondaries N 2 analog outputs 10Vdc or 4 20 mA factory set N 4 opto isolated input digital signals 24 Vdc positive logic N 6 opto isolated output digital signals 24 Vdc 0 1 A positive logic N 2 4 digits display sign indicating the output value in Volt from 9 999 to 9 99 6 touches membrane keyboard Internal dip switches for polarity inversion of the analog outputs Internal dip switches to set the node identifier Working temperature 0 C 80 C Optional RS485 connection reading of the acquired value and reading writing of the parameters with ASCII protocol Optional Profibus DPv1 connection Optional CanOpen DS404 connection 6 6 4 Electrical connection As regards the electrical connection of the unit refer to the enclosed datasheet and to the descriptions near the terminals of the unit itself As far as the connection of the stator to the card XC6 is concerned remember that it isn t a polarized connection AO CARY ELEJI 67 8910 Connection of the stator winding a 6 e The stator cable mus
13. t connected directly to the ADX F unit The E length of this cable is factory defined and must not be prolonged To connect the field buses connector XC4 refer to the corresponding manuals 711 5 Standard functioning The ADX unit has a local operator interface composed by six touches and two 4 digits sign displays When the display is switched on the version of the unit management software appears for few seconds The unit is ready to work In the standard functioning conditions the upper display shows the reading value of A channel while the lower display shows the reading value of B channel The values have already the right information of gain and calibration moreover these values due to the set factory parameters represent also the tension expressed in Volt on the analog outputs If one of the two displays upper or lower shows only 5 decimal points it means that the reading channel is not active or it is wrongly coupled if the display shows 5 horizontal lines the torquemeter acquisition is saturated If the channel looses the coupling on a frame the analogue output ES remains fixed at the last valid data Afters 3 frames lost one after the other the digital output of data valid goes to zero and the analogue output is not to be consider valid anymore 8 8 5 1 Analog outputs zeroing calibration The zeroing of the analog outputs with the unloaded machine calibration is
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