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DEWESOFT DSI-LVDT Series, Technical Reference Manual

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Summary of Contents for DSI-LVDT Series

Page 1: ...DSI LVDT ADAPTERS TECHNICAL REFERENCE MANUAL DSI LVDT V20 1 1 ...

Page 2: ... 6 DSI adapters TEDS sensor supporSt 17 6 1 Manual operation 18 7 Warranty information 20 7 1 Calibration 20 7 2 Support 20 7 3 Service repair 20 7 4 Restricted Rights 20 7 5 Printing History 21 7 6 Copyright 21 7 7 Trademarks 21 8 Safety instructions 22 8 1 Safety symbols in the manual 22 8 2 General Safety Instructions 22 8 2 1 Environmental Considerations 22 8 2 2 Product End of Life Handling 2...

Page 3: ...mbols and formats will be used throughout the document Important It gives you important information about the subject Please read carefully Hint It gives you a hint or provides additional information about a subject Example Gives you an example of a specific subject DSI LVDT V20 1 3 26 ...

Page 4: ...ut TCR 55 ppm K of Full Scale Sensor VTR S x d Sensitivity 2000 mV V maximum Sensor supported type Differential LVDR or RVDT Inductive Half Bridge LVDT Sensor Exc voltage 2 88 Vrms differential 3 Sensor Exc frequency Selectable 4 02 kHz 9 60 kHz typical 2 5 error Phase compensation 50 C to 85 C at 4 kHz 75 C to 70 C at 10 kHz TEDS 1024 Bit 1 Wire EEPROM4 Electrical specifications 4 Only one device...

Page 5: ...DSI LVDT TECHNICAL REFERENCE MANUAL 3 1 1 Output bandwidth Magnitude and Phase response Figure 1 Typical magnitude response for 4kHz EXC DSI LVDT V20 1 5 26 ...

Page 6: ...DSI LVDT TECHNICAL REFERENCE MANUAL Figure 2 Typical phase response for 4kHz EXC Figure 3 Typical magnitude response for 10kHz EXC DSI LVDT V20 1 6 26 ...

Page 7: ...Adapter uses a unique ratiometric architecture to eliminate several of the disadvantages associated with traditional approaches to LVDT interfacing The benefits of this new circuit are minimal adjustments are required temperature stability is improved and transducer interchangeability is improved DSI LVDT V20 1 7 26 ...

Page 8: ...are connected as B Inputs and adapters IN are connected as A Inputs Phase Lead Lag circuit will compensate for the difference of the sensor output in reference to Exc and Sense inputs Output signal level will depend on the phase difference between sensor output and Sense inputs DSI LVDT V20 1 8 26 ...

Page 9: ...hown for sensors with sensitivity 0 5 Output signal level is 1 2 of the Exc Signal Sensor output phase lag is 45 LVDT adapter output is 0 35 1Vexc sensitivity 0 70 according to Figure 2 When phase compensation matches phase lead lag of sensor output LVDT adapter output will be at its maximum 0 5 1Vexc sensitivity 1 00 DSI LVDT V20 1 9 26 ...

Page 10: ...DSI LVDT TECHNICAL REFERENCE MANUAL Figure 7 Example 45 sensor output no compensation Figure 8 Example 45 sensor output 45 compensation DSI LVDT V20 1 10 26 ...

Page 11: ...ame I O Description 1 PS I Power Power Supply 2 Out O Signal Adapter Output Single ended 3 PSEn I Signal Power Supply Enable 4 AGND I Analog Ground 5 Reser I O Reserved Not Connected 6 PSEn I Signal Power Supply Enable 7 Out O Signal Adapter Output Ground 8 PS I Power Power Supply 9 TEDS I O Signal TEDS DSI LVDT V20 1 11 26 ...

Page 12: ...Name I O Description 1 PS I Power Power Supply 2 Out O Signal Adapter Output Ground 3 Out O Signal Adapter Output Single ended 4 PS I Power Power Supply 5 MGND I Mechanical Ground chassis 6 TEDS I O Signal TEDS 7 AGND I Analog Ground 8 Reser I O Reserved Not Connected DSI LVDT V20 1 12 26 ...

Page 13: ...Pin Name I O Description 1 Exc O Power Sensor supply excitation 2 In I Signal Sensor Output 3 Sns I Signal Sense 4 AGND I Analog Ground 5 Reser I O Reserved Not Connected 6 Sns I Signal Sense 7 In I Signal Sensor Output 8 Exc O Power Sensor supply excitation 9 Reser I O Reserved Not Connected DSI LVDT V20 1 13 26 ...

Page 14: ...O Description 1 Exc O Power Sensor supply excitation 2 In I Signal Sensor Output 3 In I Signal Sensor Output 4 Exc O Power Sensor supply excitation 5 MGND I Mechanical Ground chassis 6 Reser I O Signal Reserved Not Connected 7 AGND I Analog Ground 8 Reser I O Reserved Not Connected DSI LVDT V20 1 14 26 ...

Page 15: ...connect to SENSOR input your sensor probe Figure 13 Adapter setting frequency phase Depending on the sensor used select excitation frequency of the adapter as close as possible to frequency in sensors specifications With phase compensation adjust the measured output to maximum output value DSI LVDT V20 1 15 26 ...

Page 16: ...tor Input pin7 shall be connected to half bridge completion resistor divider assembled with discrete resistors with the following recommended specifications Resistance 1kΩ Tolerance 0 1 Temperature coefficient 15ppm Power 0 125W This connection is preferred over the previous connection IN to GND so called noisy GND Figure 14 Solder side of the DB9 male HB divider resistors DSI LVDT V20 1 16 26 ...

Page 17: ... itself and if DSI adapters TEDS sensors under Hardware setup are selected adapter will be recognised and proper EXC Voltage will be set automatically Please check if you are using the latest software where LVDT Adapter is supported Figure 15 Options Settings Figure 16 DSI adapters TEDS sensors checkbox DSI LVDT V20 1 17 26 ...

Page 18: ...f DSI adapters TEDS sensors are left unchecked under Hardware setup then sensor supply and range has to be set manually Figure 18 DSI adapters TEDS sensors checkbox is left unchecked Under Channel setup for channel N set Excitation voltage from 10V to 15V maximum according to Electrical Specifications DSI LVDT V20 1 18 26 ...

Page 19: ...DSI LVDT TECHNICAL REFERENCE MANUAL Figure 19 Excitation voltage setting DSI LVDT V20 1 19 26 ...

Page 20: ... needs to be calibrated at regular intervals The standard norm across nearly every industry is annual calibration Before your Dewesoft data acquisition system is delivered it is calibrated Detailed calibration reports for your Dewesoft system can be requested We retain them for at least one year after system delivery 7 2 Support Dewesoft has a team of people ready to assist you if you have any que...

Page 21: ...r owners 7 7 Trademarks We take pride in our products and we take care that all key products and technologies are registered as trademarks all over the world The Dewesoft name is a registered trademark Product families KRYPTON SIRIUS DSI DS NET and technologies DualCoreADC SuperCounter GrandView are registered trademarks as well When used as the logo or as part of any graphic material the register...

Page 22: ...ign manufacture and intended use of the product Dewesoft GmbH assumes no liability for the customer s failure to comply with these requirements All accessories shown in this document are available as an option and will not be shipped as standard parts 8 2 1 Environmental Considerations Information about the environmental impact of the product 8 2 2 Product End of Life Handling Observe the followin...

Page 23: ...e system With this product only use the power cable delivered or defined for the host country DO NOT connect or disconnect sensors probes or test leads as these parts are connected to a voltage supply unit Ground the equipment For Safety Class 1 equipment equipment having a protective earth terminal a non interruptible safety earth ground must be provided from the mains power source to the product...

Page 24: ...gh energy over voltage An advanced range of application under certain conditions is allowed with therefore designed products only For details please refer to the specifications Make sure that your hands shoes clothes the floor the system or measuring leads integrated circuits and so on are dry DO NOT use the system in rooms with flammable gases fumes or dust or in adverse environmental conditions ...

Page 25: ...mpassed by this product family standard are industrial both indoor and outdoor as described for industrial locations in IEC 61000 6 2 or defined in 3 7 of IEC 61326 1 Equipment and systems intended for use in other electromagnetic environments for example in the process industry or in environments with potentially explosive atmospheres are excluded from the scope of this product family standard IE...

Page 26: ... Date dd mm yyyy Notes 1 0 20 01 2016 Initial version 2 0 20 11 2017 Change General document template MSI LVDT to DSI LVDT LVDT adapter signals 2 1 19 04 2019 Add Output bandwidth Magnitude and Phase response Change 3 1 Connections HB divider resistors DSI LVDT V20 1 26 26 ...

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