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Summary of Contents for DEWESOFT DSI-LVDT Series
- Page 1 DSI-LVDT ADAPTERS TECHNICAL REFERENCE MANUAL DSI-LVDT V20-1...
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Page 2: Table Of Contents
8. Safety instructions 8.1. Safety symbols in the manual 8.2. General Safety Instructions 8.2.1. Environmental Considerations 8.2.2. Product End-of-Life Handling 8.2.3. System and Components Recycling 8.2.4. General safety and hazard warnings for all Dewesoft systems 9. Documentation version DSI-LVDT V20-1 2/26... -
Page 3: About This Document
DSI-LVDT TECHNICAL REFERENCE MANUAL 2. About this document 2.1. Legend The following symbols 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. -
Page 4: Technical Data
DSI-LVDT TECHNICAL REFERENCE MANUAL 3. Technical data 3.1. Electrical specifications DSI - LVDT adapter is powered by EXC voltage. LVDT adapter is compatible with SIRIUS(i) (variable EXC) or DEWE 43A type instrument (fixed +/-5V EXC). General specifications Parameter Description Power supply Exc. Voltage 10 V –... -
Page 5: Output Bandwidth - Magnitude And Phase Response
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...
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Page 7: Theory Of Operation
DSI-LVDT TECHNICAL REFERENCE MANUAL Figure 4: Typical phase response for 10kHz EXC 3.2. Theory of operation DSI - LVDT 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;... - Page 8 DSI-LVDT TECHNICAL REFERENCE MANUAL Figure 5: Functional block diagram LVDT adapter SENSE inputs 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.
- Page 9 DSI-LVDT TECHNICAL REFERENCE MANUAL Figure 6: LVDT adapter output sensitivity to input signal phase lead/lag , 1:1 sensor Two examples are shown for sensors with sensitivity = 0,5. Output signal level is 1 2 of the Exc. Signal. Sensor output phase lag is 45⁰. 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 ∙...
- Page 10 DSI-LVDT TECHNICAL REFERENCE MANUAL Figure 7: Example: 45⁰ sensor output , no compensation Figure 8: Example: 45⁰ sensor output, 45⁰ compensation DSI-LVDT V20-1 10/26...
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Page 11: Connectors
DSI-LVDT TECHNICAL REFERENCE MANUAL 4. Connectors 4.1. Input connector pinout DSUB 9 connector Figure 9: 9 pin DSUB plug Name Description I, Power Power Supply + Out+ O, Signal Adapter Output (Single ended) + PSEn- I, Signal Power Supply Enable - AGND Analog Ground Reser. - Page 12 DSI-LVDT TECHNICAL REFERENCE MANUAL LEMO 2B.308 connector Figure 10: Lemo 8-pin plug Name Description I, Power Power Supply + Out- O, Signal Adapter Output (Ground) - Out+ O, Signal Adapter Output (Single ended) + I, Power Power Supply - MGND Mechanical Ground, chassis TEDS I/O, Signal...
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Page 13: Output Connector Pinout
DSI-LVDT TECHNICAL REFERENCE MANUAL 4.2. Output connector pinout DSUB 9 connector Figure 11: 9 pin DSUB receptable Name Description Exc+ O, Power Sensor supply, excitation + I, Signal Sensor Output + Sns- I, Signal Sense - AGND Analog Ground Reser. Reserved / Not Connected Sns+ I, Signal... - Page 14 DSI-LVDT TECHNICAL REFERENCE MANUAL LEMO 2B.308 connector Figure 12: Lemo 8-pin receptable Name Description Exc+ O, Power Sensor supply, excitation + I, Signal Sensor Output - I, Signal Sensor Output + Exc- O, Power Sensor supply, excitation - MGND Mechanical Ground, chassis Reser.
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Page 15: Operation
DSI-LVDT TECHNICAL REFERENCE MANUAL 5. Operation Connect the LVDT Adapter to your SIRIUS or DEWE43 channel and 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. -
Page 16: Connections
DSI-LVDT TECHNICAL REFERENCE MANUAL 5.1. Connections LVDT – Differential Half-Bridge LVDT * 6-wire connection only shown. 4-wire also possible, connect Sns and Exc signals on the adapter side of connector. * 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. -
Page 17: Dsi Adapters / Teds Sensor Supporst
DSI-LVDT TECHNICAL REFERENCE MANUAL 6. DSI adapters / TEDS sensor supporSt Since there is an inbuilt TEDS device in the adapter itself and if DSI adapters/TEDS sensors under Hardware setup are selected, adapter will be recognised and proper EXC. Voltage will be set automatically. -
Page 18: Manual Operation
DSI-LVDT TECHNICAL REFERENCE MANUAL Figure 17: DSI-LVDT adapter is recognized and set automatically 6.1. Manual operation If 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. - Page 19 DSI-LVDT TECHNICAL REFERENCE MANUAL Figure 19: Excitation voltage setting DSI-LVDT V20-1 19/26...
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Page 20: Warranty Information
7.2. Support Dewesoft has a team of people ready to assist you if you have any questions or any technical difficulties regarding the system. For any support please contact your local distributor first or Dewesoft directly. -
Page 21: Printing History
When used in text representing the company, product or technology name, the ® sign is not used. The Dewesoft triangle logo is a registered trademark but the ® sign is not used in the visual representation of the triangle logo. -
Page 22: Safety Instructions
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. -
Page 23: General Safety And Hazard Warnings For All Dewesoft Systems
This product has been classified as Monitoring and Control equipment and is outside the scope of the 2002/95/EC RoHS Directive. However, we take care of our environment and the product is lead-free. 8.2.4. General safety and hazard warnings for all Dewesoft systems Safety of the operator and the unit depend on following these rules. - Page 24 REMOVE POWER and do not use the product until the safe operation can be verified by service-trained personnel. If necessary, return the product to Dewesoft sales and service office for service and repair to ensure that safety features are maintained.
- Page 25 DSI-LVDT TECHNICAL REFERENCE MANUAL This product has left the factory in safety-related flawlessness and in proper condition. In order to ● maintain this condition and guarantee safety use, the user has to consider the security advice and warnings in this manual. EN 61326-3-1:2008 IEC 61326-1 applies to this part of IEC 61326 but is limited to systems and equipment for industrial applications intended to perform safety functions as defined in IEC 61508 with SIL 1-3.
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Page 26: Documentation Version
DSI-LVDT TECHNICAL REFERENCE MANUAL 9. Documentation version Doc-Version Date [dd.mm.yyyy] Notes 20.01.2016 Initial version 20.11.2017 Change: General document ● template MSI-LVDT to DSI-LVDT ● LVDT adapter signals ● 19.04.2019 Add: Output bandwidth - ● Magnitude and Phase response Change: 3.1 Connections: HB ●...
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