ASTECH TX31D/1/IFM Скачать руководство пользователя | Manualshive

Страница: 17 / 43

background image

TM Page 17

Connect to
inductive
head IH1, IH2
or IL2 with
supplied
coaxial cable

Connect to
9-30VDC
SUPPLY (Free
plug supplied).

P1= +V,
P2= 0V.

Figure 6 - Demodulator RE3D Controls & Connections

Mains input.
90-260VAC

Main input fuse
2A Slow Blow

Remove 1A
fuse to
disable the
Inductive
power supply

+12V Sig 0V

Tachometer Input
and LED to show
tachometer active

USB
connection to
PC or Laptop.

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Содержание TX31D/1/IFM

Страница 1: ...ustration in this publication in any form or for any purpose is expressly forbidden unless the prior consent of Astech Electronics Limited has been given in writing Forge Industrial Estate BINSTED Alton Hampshire GU34 4PF England Tel 01420 22689 Fax 01420 22636 Via Paolo Uccello 4 20148 Milano Tel 39 02 48 009 757 Fax 39 02 48 002 070 info dspmindustria it www dspmindustria it ...

Страница 2: ...TM Page 2 ...

Страница 3: ...ications 15 4 DEMODULATOR RE3D 16 4 1 RE3D Front and Rear Panels 16 4 2 RE3D Controls Connections 18 4 2 1 RE3D Specifications 18 4 3 RE3D Programing 20 4 3 1 Programming Notes 20 4 3 2 Setting the Display Resolution 21 4 3 3 Program Flow Charts 21 4 3 3 1 RE3D With TX34D Transmitter 22 4 3 3 2 RE3D With TX31D Transmitter 23 4 3 4 RE3D Programming Menu 24 4 3 5 Display Menu 24 4 3 6 Analogue Outpu...

Страница 4: ... IH2 or IH2 L with Transmitter Power Pickup Loop Using CAK Kit 32 5 2 Inductive Loop IL2 with shaft mounted power pickup loop or ip2 pickup 33 5 2 1 Inductive Loop IL2 with Power Pickup Loop in Split Ring Assembly TX MTGS 33 5 2 2 Suggested Installation Sequence for Inductive Loop IL2 with Power Pickup Loop Integrated in Split Ring Assembly 34 5 2 3 Inductive Loop IL2 with Power Pickup Loop Wound ...

Страница 5: ... voltage Output conditioning circuitry provides filtering zero adjustment and output level adjustment Maximum output levels are 10V A tachometer input allows shaft RPM to be displayed Valid data reception is indicated by the presence of a front panel red Error LED Depending on the transmitter type various signals can be output For example using a TX34D or TX35D allows the display and output of str...

Страница 6: ...S No 3203 1 x CAK Shaft Mounting Kit 1 x Inductive Power Supply Signal Pickup Head Interface Module IH2 S No 3205 1 x Mounting Bracket for Inductive Head Loop Interface Module 1 x 5 Metre Co axial Connecting Cables terminated with TNC Plugs 1 x RE3D IFM 1 Single Channel Demodulator Decoder plus 3 Pin Input Power Connector S No 3204 1 x Operating Instructions Drawings of TX31D IH2 IL2 ...

Страница 7: ...emodulator module power When power is re applied a shunt calibration resistor is connected across one arm of the strain gauge input circuit for a period of 10 seconds The shunt calibration resistor is user fitted across two solder pins Signal transmission is by inductive coupling of the 10 7MHz f m carrier from a single turn loop wound around the shaft in an inductively powered system this loop al...

Страница 8: ...m fully active torsion bridge the mV output for a given strain may be calculated from E Strain in Microstrains G F Gauge Factor 4 096 Bridge Excitation Voltage Transmitters are usually shipped with Rg 100 ohms giving a full scale input sensitivity of Transmitters with 5 0VEx Rg is calculated from Alternatively Full Scale mV In is the mV output from the strain gauge bridge transducer or other signa...

Страница 9: ...ugh the 4 corner holes or it may be fixed onto a shaft using the strapping attachment plate included in the CAK kit If the transmitter is inductively powered a mu metal cover plate may be required This is necessary when the transmitter is close to the pickup head IH2 or loop IL2 Failure to do this may result in a zero shift once per revolution due to inductive power magnetic field pickup To minimi...

Страница 10: ...C 1 5VDC from 1 1 2006 over full operating temperature range Voltage temperature coefficient typically 20 ppm C Max imum bridge output current 40 mA Short circuit protected Zero Shift with Temperature Typically 0 03 C Resolution Accuracy 11 bits plus sign 0 1 full range Operating Temperature Range 50 C to 120 C Ext ended range to special order Power Requirement 6 12 VDC 9 mA plus bridge current Di...

Страница 11: ... RE3D A shunt calibration resistor is connected across one arm of the strain gauge input circuit for a period of 10 seconds this is either a DC or AC signal at various frequencies The shunt calibration resistor is user fitted across two solder pins Signal transmission is by inductive coupling of the 10 7MHz f m carrier from a single turn loop wound around the shaft in an inductively powered system...

Страница 12: ... providing a Remote Calibration facility Required value for the calibration resistor Rcal may be calculated from the following equation The calculation can also be done using the Strain Tx Setup Cal Resistor menu in the RE3D Transmitters with 4 096VEx For example 3 2 3 TX34D 1 IFM Mounting and Cover Plate The TX34D 1 IFM uses the TX31D 1 IFM mounting system as they share the same housing The TX34D...

Страница 13: ...4 096VDC 1 over full operating temperature range The Voltage temperature coefficient is typically 20 ppm C Maximum brid ge output current 40 mA Short circuit protected Zero Shift with Temperature Typically 0 03 C Resolution Accuracy 15 bits plus sign 0 1 full range Operating Temperature Range 50 C to 120 C Ext ended range to special order Power Requirement 6 12 VDC 9 mA plus bridge current Dimensi...

Страница 14: ...a command from the RE3D A shunt calibration resistor is connected across one arm of the strain gauge input circuit for a period of 10 seconds this is either a DC or AC signal at various frequencies The shunt calibration resistor is user fitted across two solder pins Signal transmission is by inductive coupling of the 10 7MHz f m carrier from a single turn loop wound around the shaft in an inductiv...

Страница 15: ...he shaft is rotating providing a Remote Calibration facility Required value for the calibration resistor Rcal may be calculated from the following equation The calculation can also be done using the Strain Tx Setup Cal Resistor menu in the RE3D Transmitters with 3 0Ex For example 3 3 3 TX35D 1 IFM Specifications Input 1 channel full bridge strain gauge input Instrumentation Amp input operating at ...

Страница 16: ...y amplifies the low level 10 7MHz fm signal received at the inductive head or loop then demodulates it to recover the transmitted serial pcm This is then scaled digitally before being output to the analogue voltage stage Output conditioning circuitry provides filtering zero adjustment and output level adjustment Maximum output levels are 10V A tachometer input allows shaft RPM to be displayed Vali...

Страница 17: ...o 9 30VDC SUPPLY Free plug supplied P1 V P2 0V Figure 6 Demodulator RE3D Controls Connections Mains input 90 260VAC Main input fuse 2A Slow Blow Remove 1A fuse to disable the Inductive power supply 12V Sig 0V Tachometer Input and LED to show tachometer active USB connection to PC or Laptop ...

Страница 18: ...ut levels for example 5V 10V 0 5V 0 10V etc The outputs can also be set to allow analogue logging or monitoring of the transmitter temperature and display volts Data Error LED The red DATA ERROR led will light when invalid data is received from the transmitter This is an excellent indication of signal integrity and system function as a micro controller is constantly checking the received signal to...

Страница 19: ...TM Page 19 Physical Clear anodised aluminium enclosure 220 x 105 x 82mm excluding connectors Weight 1 2Kg Fuse European type TR5 2A Anti surge ...

Страница 20: ...s are mV V and torque full scale The calculated gain required is displayed and calibration resistor value can be calculated 3 Torque Shaft For connection to a torque shaft without a known mV V output Allows the physical properties of the shaft to be entered and torque calculated from these The default output is Nm Settings are torque full scale gauge factor number of active gauges shaft external a...

Страница 21: ...ut type is selected setting the Torque Full Scale to 00200 0 will set the full scale output analogue voltage to be full scale for a shaft torque of 200 Nm but will also set the RE3D display to show 200Nm with a resolution of 0 1Nm Setting the Torque Full Scale to 002000 will again set the full scale output analogue voltage to be full scale for a shaft torque of 200 Nm but the RE3D display will now...

Страница 22: ...er Speed Display Shaft Power Display Output 1 Output 2 Output 3 Output 4 Trim Adjust Strain Zero trim Strain Gain Trim Strain Display Strain Units Scaling Strain Tx Setup uE Full Scale Gauge Setup Calculated Gain Calibration Resistor TX34 Control TX34 Calibration Mode TX34 Zero Adjust TX34 Input Invert Tacho Settings Tacho Flags Decoder Settings Transmitter Types Output Calibration mode OLED Displ...

Страница 23: ...Output 1 Output 2 Output 3 Output 4 Trim Adjust Strain Zero trim Strain Gain Trim Strain Display Strain Units Scaling Strain Tx Setup uE Full Scale Gauge Setup TX31D Gain Resistor Calibration Resistor TX31D Control Start TX31D Calibration Mode Tacho Settings Tacho Flags Decoder Settings Transmitter Types Output Calibration mode OLED Display Brightness Input Type Full Scale RPM ...

Страница 24: ...so be changed by turning the Display Rotary Encoder The Display screens available are Tx Strain Tx Supply Volts Tx Temperature Tx Amp Status Tx Serial Number Decoder Error Counts Tachometer Speed Shaft Power DISPLAY Select required display DISPLAY 4 3 6 Analogue Outputs Menu DISPLAY Analogue Outputs DISPLAY Output x DISPLAY SET Output and Range DISPLAY Select the required output for each analogue ...

Страница 25: ...DISPLAY Strain Units DISPLAY SET Select Default or Custom DISPLAY If Custom is selected the annotation can be edited in the usual way 4 3 8 2 Strain scaling DISPLAY Strain Display DISPLAY Scaling DISPLAY SET Set 0 and 100 DISPLAY 4 3 9 Strain Transmitter Setup This is used to setup the transmitter including the type of sensor connected the full scale range and transmitter gain calibration resistor...

Страница 26: ...lculated from the entered setup vales is displayed and this can be sent to programmable transmitters by selecting the Send Now option DISPLAY Strain Tx Setup DISPLAY Calculated Gain DISPLAY SET Select Send Now if required 4 3 9 5 Calibration Resistor The calibration resistor value can be calculated DISPLAY Strain Tx Setup DISPLAY Calibration Resitor DISPLAY SET 4 3 9 6 Gauge Setup For input types ...

Страница 27: ...e input transducer or bridge to removed at the transmitter This is only available for programmable type transmitters eg TX34D TX35D etc DISPLAY TX34 Control DISPLAY TX34 Zero Adjust DISPLAY SET Set mV offset DISPLAY 4 3 10 3 TX34 Input Invert The transducer or bridge input can be inverted at the transmitter if required This is only available for programmable type transmitters eg TX34D TX35D etc DI...

Страница 28: ...enu or press and hold for 2 seconds to exit the menu and return to the display screen DISPLAY Decoder Settings DISPLAY Transmitter Type DISPLAY SET correct transmitter type DISPLAY 4 3 12 2 Set the Output Calibration Mode DISPLAY Decoder Settings DISPLAY Output Calibration Mode DISPLAY SET Calibration mode DISPLAY Modes available are 4 3 12 3 Set the OLED Display Brightness DISPLAY Decoder Setting...

Страница 29: ...iving element has to cope with a wide range of frequencies The choice of head loop loop loop or loop head will depend upon the application The following is a general guide to the best combination Note that the air gap distances may be considerably reduced if the installation is close to metal objects CONSIDERATION HEAD LOOP LOOP LOOP LOOP HEAD IP2 PICKUP MODULE MAXIMUM AIR GAP RADIAL 20MM AXIAL 15...

Страница 30: ...n In operation the IH2 coil is energised by a power oscillator in the demodulator decoder module usually at 2MHz This generates an alternating magnetic field across the pole pieces which induces power into the loop The IH2 or IH2 L may be used with the special manufacture split ring assembly general part number TX MTGS which will have either a locating groove for the loop wire an integrated glass ...

Страница 31: ...smitter d If not pre installed fit transmitter and counter balance module into the TX MTGS split ring assembly and install ring onto the shaft If the split ring assembly does not have an integral loop antenna wind a single turn of insulated copper wire 0 7mm diameter is supplied into the peripheral groove on the TX MTGS ring and solder connect to the transmitter loop connection pins do not overhea...

Страница 32: ...ge variations in the air gap between inductive head and the loop If the air gap becomes too great a signal drop out will occur Finally space will be required to mount the inductive head this location should be as far away as possible from metallic components or surfaces b Install gauges Note As the zero back off at the analogue output of the telemetry system is limited to 20 of the full scale meas...

Страница 33: ...large vertical shaft displacements such as are found in vehicle driveline shafts A mounting boss and universal mounting bracket provides a means of installing and aligning the IL2 loop antenna For demanding applications the IL2 may be mounted using bracketry and the body is drilled with 4 x m3 threaded holes to provide fixing points Non metallic material must be used for the bracketry In operation...

Страница 34: ...e zero back off at the analogue output of the telemetry system is limited to 20 of the full scale measuring range it may be a good plan to incorporate trimming resistor pads into the strain gauge installation to facilitate balancing of the bridge output to zero This will not be necessary if strain levels are high i e several mV output c Calculate value for Rg and Rcal if used and install resistor ...

Страница 35: ...th a small amount of silicone rubber once the loop has been tuned to give maximum voltage at the transmitter 5 2 3 Inductive Loop IL2 with Power Pickup Loop Wound onto Shaft Using CAK Kit In many applications where shaft rotational speeds are not extreme and operating temperature below about 80 C the CAK kit may be used to attach the transmitter to the shaft using steel strapping and a separate lo...

Страница 36: ...ay be a good plan to incorporate trimming resistor pads into the strain gauge installation to facilitate balancing of the bridge output to zero This will not be necessary if strain levels are high i e several mV output c Calculate value for Rg and Rcal if used and install resistor onto transmitter d Attach transmitter to shaft using a band of CAK strapping through each slot and tensioners then 3 i...

Страница 37: ...configuration where maximum air gap and tolerance of shaft displacement is required However because the magnetic coupling across large air gaps is small high resistance strain gauges of 1000 or 2000 ohms should be used not 500 or 350 ohms The IP2 module is a very convenient solution in many applications as it is pre tuned for optimum power is easily installed together with the transmitter using th...

Страница 38: ...TEEL STRAPPING Figure 14 Shaft Mounted Transmitter IP2 Inductive Power Pickup Module with Custom Form Loop EXPERIMENTAL CUSTOM FORM LOOP ANTENNA 540mm x 180mm FABRICATED FROM 2 5mm BRASS ROD IN A PRACTICAL DESIGN 5mm ROD WOULD BE REQUIRED TOGETHER WITH NON METALLIC SUPPORT BRACKETRY Figure 15 Example of Custom Form Loop Antenna 440mm x 180mm TRANSITTER IP2 PICKUP MOUNTED ON SHAFT USING CAK KIT STE...

Страница 39: ...le the loop may be positioned around the shaft before attaching it to the IL2 interface module In the case of custom shape loops loop ends may be soldered to M4 tag washers which are then connected to the IL2 module studs More substantial loop material and fixings may be used where vibration level require the loop material is not critical provided that it has a low electrical resistance brass copp...

Страница 40: ...e made by reducing air gap re locating any from metal components or improving the power in head loop tuning there several methods of improving performance 1 Incorporate a capacitor in series with the power pickup loop to partially cancel out the loop self inductance The transmitter input circuitry is optimised for a loop diameter of 90mm but for larger loop diameters the required capacitor value w...

Страница 41: ... transmitter type Contact Astech for application information 6 3 ATTACHING TRANSMITTER IP2 PICKUP MODULE ON SMALL DIAMETERS The steel strapping supplied in the CAK kit has a limitation of about 35mm installation diameter making it difficult to apply to small shafts For this type of application a special version of the TX31D baseplate is available from Astech which has tabs at each end of the plate...

Страница 42: ...Body Carp grade Tufnol Mounting Boss 18mm Diameter Connector TNC Socket Female Tolerance 0 1mm RG58 TYPE CABLE MOUNTING BOSS FOR UNIVERSAL CLAMP 2 x Ferrite Pole Pieces 6 4 DIMENSIONED DRAWINGS OF IH2 IL2 Figure 16 Dimensioned Drawing of Inductive Head IH2 ...

Страница 43: ...eaded Alternative to Boss Note Attach only to non metalic backet Connector TNC Socket Female Tolerance 0 1mm M4 STUDS FOR LOOP MOUNTING TNC CONNECTOR RG58 TYPE CABLE MOUNTING BOSS FOR UNIVERSAL CLAMP FERRITE TUNING SLUG Figure 17 Dimensioned Drawing of Inductive Loop Interface Module IL2 ...

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