Home

ProDAQ 5821 16-Ch. RTD Signal Conditioning Card

1. Copyright 2013 Bustec Production Ltd Page 84 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 85 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 27 bu5821_setMode ViStatus bu5821 setMode ViSession instrumentHandle ViInt16 channel ViInt16 mode Purpose This function sets the mode of the specified channel or all 16 channels Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If mo
2. The initialize call allows the instrument to be queried to ensure that it is a Bustec data acquisition system It also resets the module to the power up state if the Reset parameter is True ON This function interrogates the motherboard registers to ascertain in which locations there are function cards fitted and then checks those locations to identify the type of function card fitted Note that for each bu5821 init call a new unique instrument handle is returned Thus if four calls are made to the initialize call in succession four unique instrument handles will be returned For each instrument handle returned by the bu5821 init function the bu5821_close function should be called to free up the resources allocated by bu5821 init The call s to bu5821_close should be made before the application program terminates Parameter List masterHandle Variable Type ViSession This control specifies the instrument handle of the master function card For instance ProDAQ 3416 function card The VXI Plug amp Play driver of the master function card should be initialized prior to this function call IDQuery Variable Type ViBoolean Specifies whether to send an ID Query to the instrument during the initialization procedure Valid Range 1 Yes 0 No Default Value 1 Yes NOTE Under normal circumstances the ID Query ensures that the instrument initialized over the bus is the type supported by this driver However
3. bu5821 GAIN 1 8 0 Gain 1 8 bu5821 GAIN 1 4 1 Gain 1 4 bu5821 GAIN 1 2 2 Gain 1 2 bu5821 GAIN 1 3 Gain 1 bu5821 GAIN 2 4 Gain 2 bu5821 GAIN 4 5 Gain 4 bu5821 GAIN 8 6 Gain 8 bu5821 GAIN 16 7 Gain 16 Copyright 2013 Bustec Production Ltd Page 56 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM bu5821_GAIN_32 8 Gain 32 bu5821_GAIN_64 9 Gain 64 bu5821_GAIN_128 10 Gain 128 excitationCurrent Variable Type ViInt16 passed by reference This parameter return the channel current source Available values are bu5821_CURRENT_OFF 0 Exitation current is not applied bu5821_CURRENT_500 1 Exitation current of 500uA is applied bu5821_CURRENT_10 2 Exitation current of 10uA is applied Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all V
4. lt VI SUCCESS bu5821 error message session 5821 status descr printf Error bu5821 pgaCalibration failed due to s n descr return 1 Excitation Current Calibration Step 3 Calibrate the 5821 current excitation if status bu5821 excCalibration session 5821 bu5821 CHAN 1 bu5821 CURRENT 500 amp excitCurrent VI NULL VI SUCCESS bu5821 error message session 5821 status descr printf Error bu5821 excCalibration failed due to s n descr return 1 Si Page 41 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Now the excitation current can be calibrated using the function bu5821_excCalibration This function calibrates a particular channel for one of possible currents and returns the exact value of the current measured see Figure 57 O Note The calibration coefficients or absolute current values the excitation functions return are also stored in the driver and automatically applied 4 4 2 Final Calibration Once the excitation current is calibrated the ProDAQ 5821 can be configured for the planned measurement If this measurement requires a different gain setting then the gain setting used during the excitation current calibration then to reach the highest possible accuracy the signal path needs to be calibrated again for the new gain In the example the ProDAQ 5821 is configured for 3 wire
5. ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 11 bu5821_getFCLastError ViStatus bu5821 getFCLastError ViSession instrumentHandle ViStatus fcErrorCode Purpose The last error code returned by the function card driver which controls the ProDAQ 5821 Useful in the event of the error bu5821 MASTER ERR in response to the ProDAQ 5821 driver function call Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them fcErrorCode Variable Type ViStatus passed by reference Last error code returned by the function card driver which controls the ProDAQ 5821 This code is related to the function card driver and should be passed only to bu3416 error message when using the ProDAQ 3416 as the master card Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100
6. See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 53 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 7 bu5821_excCalibration ViStatus bu5821 excCalibration ViSession instrumentHandle ViInt16 channel VilInt16 excitationCurrent ViReal64 finalCurrentValue ViInt16 digipotWiperTrimValue Purpose This function performs the excitation calibration of the specified channel If the operating 5821 Signal Conditioning Card is BA or BB version they can be configured with different gains it is recommended to run Signal Path Calibration for Gain of 1 before running this function Parameter List instrumentHandle Variabl
7. ViInt16 channel ViInt16 mode ViInt16 gain ViInt16 excitationCurrent Purpose This function returns the configuration of the specified channel Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies for which channel s configuration will be returned Possible values are bu5821_CHAN 1 1 Channel 1 bu5821_CHAN_2 2 Channel 2 bu5821_CHAN 15 15 Channel 15 bu5821_CHAN 16 16 Channel 16 mode Variable Type ViInt16 passed by reference This parameter returns the channel mode Possible values are bu5821 MODE 4 WIRE bu5821 MODE 3 WIRE bu5821 MODE 2 WIRE bu5821 MODE DIFF VOLT bu5821 MODE SE VOLT bu5821 MODE GND bu5821 MODE VREF bu5821 MODE IREF 4 wire Cable 3 wire Cable 2 wire Cable Differential Voltage Single Ended Voltage Input is grounded Input is connected to Voltage Reference Input is connected to Excitation Current Reference bu5821 MODE IREF GND 9 Input is connected to Excitation Current Reference but I path is grounded can be used to measure the current without external load 0 Jo DG OM gain Variable Type ViInt16 passed by reference This parameter returns the channel gain Possible values are
8. as with Temperature Sensors if the measured resistance is greater than the chosen measurement range then the red Error LED will light Configuration Sensor Type Mode Measurement Range Excitation Current if Resistance X 4 Wire v lt 20KQ X lt 9KQ lt 4 KQ lt 2 25KQ lt 1 125KQ Apply Configuratio lt 5602 lt 2802 lt 1409 lt 702 Figure 24 5821 SFP Measurement Range Selection Resistive Sensors 500A current If the current setting is 104A BB only then the resistive ranges vary from lt 4kQ to lt 1MQ as shown in Figure 25 Configuration Sensor Type Mode Measurement Range Excitation Current Resistance y 4 Wire x lt 1MQ e lt 450KQ lt 225KQ lt 112KQ lt 56KQ Apply Configuratio lt 28KQ lt 14KQ lt KQ lt 3 5KQ Figure 25 5821 SFP Measurement Range Selection Resistive Sensors 10A current For Voltage sensors the measurement ranges vary from 35mV to 10V Configuration Sensor Type Voltage x Mode Differential Voltage X Measurement Range 10V v Z 5V Excitation Current 2 25V 1 12V r 0 56V Apply Configuratio 0 28Y A 0 14 0 07V 0 035V Figure 26 5821 SFP Measurement Range Selection Voltage Sensors 3 2 Channel Calibration Copyright 2013 Bustec Production Ltd Page 22 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM The 3416 5821 system has factory default calibratio
9. bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 trimmerValue Variable Type ViInt16 passed by reference Returns the calibration Excitation Current Trimmer value Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x
10. circumstances may arise where it is undesirable to send an ID Query to the instrument In those cases set this control to Skip Query and this function will initialize the bus and the command arrays in the driver without doing an ID Query resetDevice Variable Type ViBoolean Specifies whether the instrument is to be reset to its power on settings during the initialization procedure Valid Range 1 Yes 0 No Default Value 1 Yes NOTE If you do not want the instrument reset set this control to No while initializing the instrument instrumentHandle Variable Type ViSession passed by reference Page 71 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them NOTE A new unique handle will be returned EACH time the initialize function is called The bu5821_close call should be used for EVERY handle returned by the bu5821_init function Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return th
11. function bu3416_setChanConfig lt takes as arguments the session to the instrument a channel number a selection for the input multiplexer and a value for the gain setting The channel number has to be an integer number in the range of 1 16 to select one of the channels or 0 for applying the configuration to all channels Predefined macros from the include file bu3416 h can be used bu3416 CHAN 1 tO bu3416 CHAN 16 Or bu3416 CHAN ALL The input multiplexer can be set to either connect the channel s input to the front panel connector or to the internal voltage reference bus The selection can be made by using an integer value of 0 front panel connector or 1 voltage reference bus or again by using a macro predefined in bu3416 h bu3416 CH FP or bu3416 CH VREF The gain can be set in steps of 1 2 5 between 1 and 2000 by either using valid integer numbers 1 2 5 10 20 50 100 200 500 1000 2000 or by using the predefined macros bu3416 GAIN 1 to bu3416 GAIN 2000 for more information refer to the ProDAQ 3416 User Manual 4 3 2 ProDAQ 5821 Channel Configuration The ProDAQ 5821 allows to configure the channel for a connection mode 5821 Bx only as well as to configure its gain stage and excitation current via the driver function bu5821_setChanConfig It takes as an input the instrument session a channel number the selection of a mode ignored for 5821 Ax versions the gain and the selection of the excitation current As for the
12. standardization Thermistors Thermistors are thermally sensitive resistors whose prime function is to exhibit a large predictable and precise change in electrical resistance when subjected to a corresponding change in body temperature Negative Temperature Coefficient NTC thermistors exhibit a decrease in electrical resistance when subjected to an increase in body temperature and Positive Temperature Coefficient PTC thermistors exhibit an increase in electrical resistance when subjected to an increase in body temperature Because of their very predictable characteristics and their excellent long term stability thermistors are generally accepted to be the most advantageous sensor for many applications including temperature measurement and control Thermistors typically achieve a high precision within a limited temperature range typically 90 C to 130 C Cryogenic Diodes Diode temperature sensors are based on the fact that the voltage drop across a forward biased PN junction is a function of temperature This voltage drop is determined by the nature of the semiconductor Diodes are usable from 1 4 Kelvin to 325 Kelvin but are more frequently used at 4 2 Kelvin and above This temperature range can be covered by a single device Because diodes follow a standard calibration curve with reasonable accuracy and because a single device can cover this broad temperature range diodes are widely used in instrumentation and control systems for he
13. 21 A differential voltage signal has three outputs namely a ground reference and two signal lines that are in opposite polarity balanced around the ground reference In this case the I pin of the connector should be used as the ground reference and S S use as the signal inputs A single ended voltage signal has two outputs namely a ground reference and a signal line In this case S should be used as the signal input and S as the ground reference input Note how excitation current is switched off for voltage sensors Each sensor type has a number of Measurement Ranges associated with it In order to ensure the highest measurement accuracy it is important that the operator selects the appropriate range For the PT 100 PT 500 and PT 1000 the measurement units are C and all associated waveforms will display on the Temperature graph Copyright 2013 Bustec Production Ltd Page 20 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Configuration Sensor Type Voltage x Mode Differential Voltage R Single Ended Voltage Measurement Range 7 Excitation Current of lv Apply Configuration to all Enabled Channels Figure 21 5821 SFP Mode Selection Voltage As shown in Figure 22 for the PT 100 there are four available measurement ranges lt 80 C lt 100 C lt 500 C and lt 850 C The PT 500 and PT 1000 sensors have different ranges namely lt 100 C lt 0 C lt 300 C and lt
14. 5821 SFP Excitation Current Status LED red The Error LED is normally grey but will go red if a fault is detected An example of a fault is signal over range detection If this LED is red it is recommended firstly to check channel configuration and secondly to test for broken wires using the Test Wire button Note that the error LED operates using polling and thus it might several seconds before the LED reacts The Test Wire button will check whether any wires from the sensor that are connected to the channel are broken It is disabled if excitation current is off and is not available for Voltage sensors The number of wires checked depends on the chosen mode 4 wire 3 wire or 2 wire In 4 wire mode all four wires are checked in 3 wire mode the S input is not checked and in 2 wire mode only l and l are checked Testing for broken wires involves a two step process The first step involves checking the I and l wires If these are determined to be ok then S and S are checked and it can be determined whether S S or both are broken If a wire is ok a green message indicates this while a broken wire has a red message If l or l are broken it is not possible to determine which and thus a yellow message is displayed indicating that one of the wires or possibly both are broken and thus they should be checked The signal wires are shown in blue with status unknown After fixing these wires the operator should run Test Wires again to confirm that
15. 850 C Configuration Sensor Type PT 100 LA Mode 4 Wire v Measurement Range lt 100 C lt 850 C lt 500 C Excitation Current 100 C lt 80 C Apply Configuration to all Enabled Channels Figure 22 5821 SFP Measurement Range Selection Temperature Sensors If the measured temperature is greater than the chosen measurement range then the red Error LED will light In Figure 23 a 1000 resistor is connected to channel 1 simulating a PT 100 operating at 0 C The maximum temperature of the selected measurement range is 80 C and thus the temperature is outside the range Hence the Error LED lights E 2 ProDAQ 5821 Channel Configuration E Chi Ch2 Ch3 Ch4 Ch5 Oe Ch7 h8 Ch9 chi0 Chit Ch12 Ch13 Ch14 ch Enable Channel Enabled v Configuration Calibration Calibrate Channel 1 Sensor Type PT 100 e Mode 4 Wire Calibrate all Enabled Channels Measurement Range Status Excitation Current Status Excitation Current 500uA v 9 Error Apply Configuration to all Enabled Channels Test Wire Close Figure 23 5821 SFP Measurement Range Selection too Low PT 100 Page 21 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual If the Resistance sensor type with 500pA of current is chosen then nine resistance ranges are available varying from lt 700 up to lt 20kQ Again
16. Page 37 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 4 2 Connecting to the Function Card and Signal Conditioning Card The ProDAQ 5821 driver utilizes the ProDAQ 3416 driver to access the signal conditioning card Therefore first the ProDAQ 3416 driver need to be initialized and connected to the correct function card the one connect via cable to the ProDAQ 5821 before the ProDAQ 5821 driver can be initialized To initialize the ProDAQ 3416 driver and connect to the ProDAQ motherboard or function card carrier the standard VXIlplug amp play initialization function bu3416_init is used see Figure 56 0 Please refer to the VXIp ug amp play standard VPP 4 3 section 4 3 for a detailed description of the address string After initializing the driver and connecting to the motherboard or carrier the driver must be told which one of the function cards to work with This is done by the function bu3416 fcSelect lt takes as an argument the session established via the function bu3416_init the function card number and a boolean value specifying whether to reset the selected function card see Figure 56 include lt visa h gt tinclude lt bu3416 h gt include lt bu5821 h gt main int argc char argv ViStatus status ViSession session 3416 ViSession session 5821 ViChar descr 256 ifndef USE PARAMINIT D connect to a ProDAQ motherboard in a VXIbus syst
17. all VISA functions and the status codes returned by each of them Copyright O 2013 Bustec Production Ltd Page 62 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOB00 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 63 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 13 bu5821_getMode ViStatus bu5821 getMode ViSession instrumentHandle ViInt16 channel ViInt16 mode Purpose This function returns the mode of the specified channel Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies for which channel the mode
18. bu3100 error message or viStatusDesc to return the correct warning error message Page 69 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright O 2013 Bustec Production Ltd Page 70 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 17 bu5821_init ViStatus bu5821 init ViSession masterHandle ViBoolean IDQuery ViBoolean resetDevice ViSession instrumentHandle Purpose Initializes the instrument and returns an Instrument Handle The instrument handle must be used with all of the other functions of this driver
19. error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 61 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 12 bu5821_getGain ViStatus bu5821 getGain ViSession instrumentHandle ViInt16 channel ViInt16 gain Purpose This function returns the PGA gain setting of the specified channel Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type i
20. errorMessage Purpose Converts a numeric error code returned by one of the functions of this driver into a descriptive error message string Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them errorReturnValue Variable Type ViStatus Accepts the error code returned by one of the functions in this instrument driver See bu5821 h for error codes errorMessage Variable Type ViChar Upon return from the function this parameter holds a text error message which corresponds to the error code The VISA Warnings and VISA Errors are described in section 3 3 of the VPP 4 3 2 document and Appendix B of VPP 4 3 Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Errors
21. h Page 77 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 22 bu5821_revision_query ViStatus bu5821 revision query ViSession instrumentHandle ViChar driverRevision ViChar instrumentFirmwareRevision Purpose Returns information about the hardware and software revisions Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them driverRevision Variable Type ViChar Returns the instrument driver revision instrumentFirmwareRevision Variable Type ViChar Returns firmware revision string Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document
22. if an error occurred The general meaning of the status code is as follows Value Meaning 0 Success Positive Values Warnings Negative Values Errors The description of each instrument driver function lists possible error codes and their meanings Page 45 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Function Tree Layout Class Panel Name Initialization Hardware Configuration Set Channel Configuration Get Channel Configuration Calibration Functions Signal Path Calibration Excitation Current Calibration Low level Access Set Mode Get Mode Set Gain Get Gain Set Excitation Current Get Excitation Current Voltage Reference Access Set Voltage Reference Output Get Voltage Reference Output Get Voltage Reference Info Low Level Calibration Reset Calibration Coeff Get Signal Path Calib Coeff Get Excit Calibration Coeff Store Calibration Coeff Status Functions Check EC Current Status Check EC Error Utility Functions Read Temperatur Reset Error Message Device Serial Number Revision Query Get Function Card Last Error Check Broken Wire Set Conversion Close Function Name bu5821 init bu5821 setChanConfig bu5821 getChanConfig u5821 pgaCalibration u5821 excCalibration DO u5821 se u5821 ge u5821 se u5821 ge u5821 se u5821 ge Mode Mode Gain Gain ExcitCurrent
23. with a parameter specifying the function card number see Figure 56 0 For the driver functions to work properly you will either have to use the function bu3416 paramInit to open a session with the device or you will have to call the function bu3416_fcSelect after calling the function bu3416_init and before any other driver function is called Now you can connect to the ProDAQ 5821 as well by using the function bu5821_init with the session handle to the ProDAQ 3416 returned by the functions bu3416_init or bu3416 paramInit As With the ProDAQ 3416 init function you have the choice whether to check the ID of the signal conditioning card to connect to as well as to reset the card see Figure 56 O The function returns a new session handle which must be used with all ProDAQ 5821 driver functions To close the driver sessions with the ProDAQ 5821 and the ProDAQ 3416 the standard VXlplug amp play functions bu5821_close and bu3416_close must be used preferably in this sequence NOTE Please note that only code snippets are shown here in the manual For the complete example refer to the Examples folder in the drivers installation directory 4 3 Hardware Configuration To measure correctly an application need to configure both cards the ProDAQ 3416 as well as the ProDAQ 5821 4 3 1 ProDAQ 3416 Channel Configuration The input multiplexer and gain stages on the ProDAQ 3416 function card are configured using the
24. 14 Temperature Waveform AAA 27 Figure 38 Channel 14 Mean Measured Temperature 27 Figure 39 Configuration of Channel 1 Initial Screen 28 Figure 40 Configuration of Channel 1 Excitation Current On 28 Figure 41 Configuration of Channel 1 3 Wire Mode Selected 29 Figure 42 Measurement of Channel 1 PT100 sensor 3 Wire Mode ooooooooccccccccccccccacccccccicanananann 29 Figure 43 Statistics Mean of Measurement of Channel 1 PT100 sensor 3 Wire Mode 30 Figure 44 Measurement of Channel 1 PT100 4 Wire Mode S and I Shorted Externally 30 Figure 45 Measurement of Channel 9 sensor PI TO00 31 Figure 46 Statistics Mean of Measurement of Channel 9 sensor PT 1000 31 Figure 47 Measurement of Channel 9 sensor PI A0o0 32 Figure 48 Statistics Mean of Measurement of Channel 9 sensor PT 500 32 Figure 49 Configuration of Channel 8 Resistance 4 Wire Mode Selected 33 Figure 50 Measurement of Channel 8 sensor 5kQ Resistance oooooocccccccccccnccicancnoononcnnncccnnnnnannno 34 Figure 51 Statistics Mean of Measurement of Channel 8 sensor 5kQ Hesisiance 34 Figure 52 Configuration of Channel 8 Voltage Jop 35 Figure 53 Measurement of Channel 8 Voltage Input 36 Page 5 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Figure 54 Statistics Me
25. 2 C the temperature range was changed to lt 850 C the maximum recommended operating temperature for this range in order to maximize the measurement accuracy A calibration was then made and results taken Note that a calibration was made because the measurement range was changed Figure 47 shows the measured waveform and Figure 48 gives a mean value of 408 48 C compared to the theoretical value of 408 42 C The difference is just 0 06 C It may be seen that the peak peak variation around this mean is about 0 015 C MODAQ 5821 Soft Front Panel 192 168 168 154 lo 5 ma Voltage Waveform mett Resistance Waveform Temperature Waveform A 408 51 Waveform Length 408 5 Sampling Rate 1kHz y Statistics 408 49 ee Temperature 408 48 Channel Configuration 408 47 Reset Device 408 46 About CR Measured Temperature Mean Value YY Channel 9 408 4784 C Figure 48 Statistics Mean of Measurement of Channel 9 sensor PT 500 Copyright O 2013 Bustec Production Ltd Page 32 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 3 4 4 Measuring a 5kQ Resistor A 5kQ 0 01 1ppm resistor was connected to channel 8 via a 50m 24AWG multi core cable and connected in 4 wire mode Using an 8 5digit DMM operating in 4 wire mode the resistance of the load was previously confirmed to be 4999 61Q just inside the 0 5Q specification quoted by the manufacturer F
26. 2 Excitation calibration bu5821 CALIB TYPE ALL 3 Both Signal path and Excitation Return Value If the function was successful it will return a status of VI SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821
27. 3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright 2013 Bustec Production Ltd Page 58 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 10 bu5821_getExcitCurrent ViStatus bu5821 getExcitCurrent ViSession instrumentHandle ViInt16 channel ViInt16 excitationCurrent Purpose This function returns the Excitation Current for the selected channel Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies for which channel s gain setting to be returned Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 excitationCurrent Variable Type ViInt16 passed by reference This parameter return the Excitation Current for the selected channel Available values are bu5821 CURRENT OFF 0 Exitation current is not applied bu5821 CURRENT 500 1 Exitation current of 500uA is applied bu5821_CURRENT_10 2 Exitation current of 10uA is applied Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will ret
28. 5821_ reset Error Message bu5821_error_message Device Serial Number bu5821_serialNumber Revision Query bu5821_revision_query Get Function Card Last Error bu5821_getFCLastError Check Broken Wire bu5821_brokenWireDetect Set Conversion bu5821_bu5821_setConversion bu5821_ close Figure 55 VXI plug amp play Driver Organization The section Hardware Configuration contains high level functions to configure the card The section Calibration Functions contains high level functions that can be used to calibrate the ProDAQ 3416 and ProDAQ 5821 The section Utility Functions contains utility functions that can be used together with the high level functions The section Low level Access contains functions that directly change settings on a register level and are used by the higher level functions to implement their functionality Using them directly in combination with the higher level functions might interfere with the functionality implemented and should be avoided In general the usage of the low level functions will require an intimate knowledge of the ProDAQ 5821 hardware as well as the hardware of the ProDAQ 3416 and the respective function card carrier Before you attempt to implement your data acquisition or test application using them it is recommended to study their usage in the higher level functions in the driver sources and or contact Bustec for support The following paragraphs will explain the usage of the high level functions
29. 7 kO 2 64 3 5kQ 2 128 10 V 2 Va 4 5 V 2 1 2 25 V 2 2 1 12 V 2 4 Voltage 0 56 V Se d off 2 8 0 28 V 2 16 0 14 V 2 32 0 07 V 2 64 0 035V 2 128 Table 1 Channel Configuration Parameter Page 43 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual This page was intenionelly left blank Copyright O 2013 Bustec Production Ltd Page 44 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 VXIplug amp play Driver Functions Introduction This instrument driver provides programming support for the ProDAQ 5821 16 channel RTD Signal Conditioning Card It contains functions for opening configuring calibrating and closing the instrument Assumptions To successfully use this function card it must be installed onto a ProDAQ VXIbus motherboard or a ProDAQ LXI function card carrier The ProDAQ motherboard must in turn be installed in a VXlbus system which is connected via a suitable slot 0 controller to your computer The LXI function card carrier must be connected via network to your computer A suitable VISA library must be installed on your computer Error and Status Information Each function in this instrument driver returns a status code that either indicates success or describes an error or warning condition Your program should examine the status code from each call to an instrument driver function to determine
30. COBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 75 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 20 bu5821 reset ViStatus bu5821 reset ViSession instrumentHandle Purpose This function resets the function card to its power on state Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and th
31. ExcitCurrent CC CECE OCT CT CT ct u5821 setVoltRefOutput u5821 getVoltRefOutput u5821 getVoltRefInfo u5821 ge PgaCalibCoeff u5821 getExcCalibCoeff u5821 storeCalibCoeff u5821 resetCalibCoeff DD DO u5821 checkECStatus u5821 checkECError o O u5821 readTemperatur u5821 reset u5821 error message u5821 serialNumber u5821 revision query u5821 getFCLastError u5821 brokenWireDetect u5821 bu5821 setConversion u5821 close OU CC 0 0 O0 Copyright 2013 Bustec Production Ltd Page 46 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 VXIplug amp play Driver Function Details The following functions are in alphabetical order 5 1 1 bu5821_brokenWireDetect ViStatus bu5821 brokenWireDetect ViSession instrumentHandle ViInt16 channel ViInt16 currentPosWireStatus ViInt16 currentNegWireStatus ViInt16 signalPosWireStatus ViInt16 signalNegWireStatus Purpose This function checks the broken wire status of the specified channel Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies which channel will be chec
32. ISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 57 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 9 bu5821_getExcCalibCoeff ViStatus bu5821 getExcCalibCoeff ViSession instrumentHandle ViInt16 channel ViInt16 trimmerValue Purpose This function retrieves the values for the Excitation Current Trimmer Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies for which channel the calibration coefficients will be returned Possible values are bu5821_CHAN 1 1 Channel 1
33. Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies which channel will be configured Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 OR bu5821 CHAN ALL 0 All 16 channels will be configured with the same parameters excitationCurrent Variable Type ViInt16 This parameter specifies the Excitaion Current Available values are bu5821_CURRENT_OFF 0 Exitation current is not applied bu5821_CURRENT_500 1 Exitation current of 500uA is applied bu5821_CURRENT_10 2 Exitation current of 10uA is applied Default value 0 bu5821 CURRENT OFF Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return
34. Per dch unie re edi bs it 84 5 1 27 RAS A o 86 5 1 28 Ru er de tada dotada Radios 88 5 1 29 bu5821_ storeCalibCoeff cccccccnnnoccnnncconnnnnononononccnnnnnnnnnnonononcnnnnnnnnnnnnnnnannnnnnnnnnnns 90 6 IPeCITICA ON Sii AA ee 91 6 12 Available Versions dea 91 6 2 Signal Conditioning nr nent eee ee tea etes 91 6 3 Environmental Speclfications ttes 91 Copyright 2013 Bustec Production Ltd Page 4 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Table of Figures Figure 1 ProDAQ 5720 Signal Conditioning Carrier with 9 Figure 2 ProDAQ 5720 Front Rack mount Options 11 Figure 3 ProDAQ 5720 Rear Rack mount Options ac toooicctincidaniainctan dci tiara 11 Figure 4 ProDAG 5720 Rear VIC bi A a 12 e ER o ARAS EE 13 Figure 6 Wire and Plug ASSOMDlV aiii de 13 HEEN 13 Figure 8 ProDAQ 5821 Ax 2 wire sensor connection cooooccccccccccnccconnnanonnncnnncncnnnnnnnnnnncnnnnnnnnnnnnnns 14 Figure 9 ProDAQ 5821 Bx 2 wire sensor connection 14 Figure 10 ProDAQ 5821 Bx 3 wire sensor connection 15 Figure 11 4 wire sensor Connection BEE 15 Figure 12 Function e EE EE 17 Figure 13 Entering Function Card Address 17 Figure 14 5821 SFP Initial Start Up Screen iii iaa 18 Figure 15 5821 SFP Start Up Screen Drop DOWN Arrows 18 Figure 16 5821 Chan
35. ProDAQ 3416 s bu3416 setChanConfig function the channel number has to be an integer number in the range of 1 16 to select one of the channels or 0 for applying the configuration to all channels Predefined Page 39 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual macros from the include file bu5821 h can be used for all the settings The mode can be set for 2 wire bu5821 MODE 2 WIRE 3 wire bu5821 MODE 3 WIRE 4 wire bu5821 MODE 4 WIRE single ended and differential voltage bu5821 MODE SE VOLT bu5821 MODE DIFF VOLT and other modes which can be used for calibration or test purposes see chapter 5 1 24 The gain can be set to values of 1 8 to 128 1 8 1 4 1 2 1 2 4 8 16 32 64 128 by using the macros bu5821 GAIN 1 8 tO bu5821 GAIN 128 The excitation current can be switched off bu5821_CURRENT_OFF or can be enables and set to 10 yA bu5821 CURRENT 10 5821 BB only or 500 HA bu5821_CURRENT_500 4 4 Calibration The calibration of the ProDAQ 3416 and ProDAQ 5821 requires several steps mainly because the calibration of the excitation current requires first the complete signal path being calibrated for accurate voltage measurements Once the excitation current is calibrated the ProDAQ 5821 can be configured and calibrated for the desired mode of operation and measurement 4 4 1 Excitation Current Calibration To calibrate the excitation current three st
36. RTD Signal Conditioning Card User Manual 5821 XX UM 2 Getting Started The ProDAQ 5820 series signal conditioning cards are factory mounted into the ProDAQ 5720 carrier There are no customer serviceable parts inside the ProDAQ 5720 2 1 Mounting the ProDAQ 5720 into a 19 rack The ProDAQ 5720 comes with two mounting brackets for standard 19 racks To support different cabling options these mounting brackets can be attached to the ProDAQ 5720 in four different ways Figure 3 ProDAQ 5720 Rear Rack mount Options The ProDAQ 5720 carrier power supply accepts 115V 230V AC at 47 63Hz via a standard IEC inlet on the rear Page 11 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual as Main Power Switch Figure 4 ProDAQ 5720 Rear View 2 2 Connecting to a ProDAQ 3416 ADC Function Card For the connection between the ProDAQ 5821 Signal Conditioning Card and a ProDAQ 3416 ADC Function Card a standard ProDAQ 8010 Bx series data l O cable is used The ProDAQ 5821 is equipped with a standard 50 pin SCSI connector on its rear panel to attach the cable to ProDAQ 8010 Bx Data I O Cable to ProDAQ 3416 2 D se ProDAQ 5821 installed in ProDAQ 5720 Copyright O 2013 Bustec Production Ltd Page 12 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 2 3 Connecting your Sensors The ProDAQ 5821 uses 4 pole 3 5mm pi
37. The affixed product label indicates that you must not E discard this electrical product in domestic household waste Product Category Monitoring and Control Instrumentation KH To return unwanted products contact Bustec Ltd Page 7 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual This page was intenionelly left blank Copyright O 2013 Bustec Production Ltd Page 8 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 1 Introduction 1 1 Overview The ProDAQ 5821 series of Signal Conditioning Cards is designed to interface with a variety of sensors such as RTDs Thermistors and Cryogenic Diodes Different versions support modes like 2 wire 3 wire with compensation and 4 wire sensor attachment and different excitation currents In order to achieve the highest accuracy the excitation current may be automatically calibrated on the fly using the ProDAQ 3416 24 bit Sigma Delta ADC card and an on board precision resistor Figure 1 ProDAQ 5720 Signal Conditioning Carrier with ProDAQ 5821 RTD Signal Conditioning Card The ProDAQ 5821 card is designed to work with the ProDAQ 3416 16 ch 24 bit Sigma Delta ADC function card installed in one of the ProDAQ function card carriers for VXI or LXI systems The connection between the ADC function card and the signal conditioning card is done via a standard ProDAQ 8010 SCSI style data l O cable lt carri
38. They are defined in the include file bu5821 h Copyright O 2013 Bustec Production Ltd Page 90 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 6 Specifications 6 1 Available Versions Versions 5821 AA RTD Signal Conditioning Card 5821 BA RTD Signal Conditioning Card with 3 wire compensation 5821 BB RTD Signal Conditioning Card with 3 wire compensation and support for cryogenic diodes 6 2 Signal Conditioning Sensor Types Resistive RTD Thermistors Cryogenic Diodes Sensor Modes internally configurable 2 38 4 wire 5821 Bx 4 wire 5821 Ax Output Current 500 HA RTD Thermistors all versions 10UA Cryogenic Diodes 5821 BB only Current Accuracy 500 pA 0 01 typical 10 yA 0 02 typical Compliance Voltage 5 Volt Current Monitoring Yes Broken Wire Detection Yes 5821 Bx only Volt Reference Monitoring Yes 5821 Bx only 6 3 Environmental Specifications Temperature 0 Cto 50 C operational 40 to 70 C storage only Humidity 5 95 non condensing Warm up Time 30 min minimum Page 91 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual This page was intenionelly left blank Copyright O 2013 Bustec Production Ltd Page 92 of 94 This page was intenionelly left blank Bustec Production Lt
39. USER MANUAL ProDAQ Signal Conditioning Cards ProDAQ 5821 16 Channel RTD Signal Conditioning Card PUBLICATION NUMBER 5820 XX UM 1000 bustec Copyright O 2014 Bustec Production Ltd Bustec Production Ltd Bustec House Shannon Business Park Shannon Co Clare Ireland Tel 353 0 61 707100 FAX 353 0 61 707106 PROPRIETARY NOTICE This document and the technical data herein disclosed are proprietary to Bustec Production Ltd and shall not without express written permission of Bustec Production Ltd be used in whole or in part to solicit quotations from a competitive source or used for manufacture by anyone other than Bustec Production Ltd The information herein has been developed at private expense and may only be used for operation and maintenance reference purposes or for purposes of engineering evaluation and incorporation into technical specifications and other documents which specify procurement of products from Bustec Production Ltd This document is subject to change without further notification Bustec Production Ltd Reserve the right to change both the hardware and software described herein Copyright O 2013 Bustec Production Ltd Page 2 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Table of Contents Li INTO GU CHOI a 9 a Ea OVERVIEW A A A 9 1 1 1 ProDAQ 5720 Signal Conditioning Carrier 9 1 2 A oe NR oe eR Per Bere er oie eer eee er eee ne 9 2 GENUINO SIA mane
40. age reference output will be routed to the ProDAQ 5821 rear panel connector for monitoring purposes This parameter will be ignored if the external voltage reference is selected as a source Possible values are VI_FALSE Voltage reference output is disconnected from the ProDAQ 5821 rear panel connector VI_TRUE Voltage reference output is connected to the ProDAQ 5821 rear panel connector WARNING Copyright 2013 Bustec Production Ltd Page 88 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Please always make sure when using monitor that the power source or voltage reference is NOT connected to the rear panel connector Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by ea
41. all wires are now ok Figure 31 to Figure 35 show various simulated broken wire conditions r ES ProDAQ 5821 Wire Status a s Current Wire Ok Current Wire Ok Signal Wire Ok Signal Wire Ok Copyright 2013 Bustec Production Ltd Page 24 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Figure 31 5821 4 Wire Mode All Wires OK 2 proDAQ 5821 Wire Status a Current Wire Maybe Broken please check Current Wire Maybe Broken please check Signal Wire Status Unknown Signal Wire Status Unknown Figure 32 5821 4 Wire Mode Broken I Wire E2 ProDAQ 5821 Wire Status ES Current Wire Ok Current Wire Ok Signal Wire Broken Signal Wire Ok y FS ProDAQ 5821 Wire Status EI Current Wire Ok Current Wire Ok Signal Wire Ok 2 FS ProDAQ 5821 Wire Status ES Current Wire Ok Current Wire Ok Figure 35 5821 2 Wire Mode No S S Wires so all wires OK 3 4 Making a Measurement This section describes the process of making a measurement in order to guide the operator more clearly Several sensor types will be considered a PT 100 in 4 wire and 3 wire mode a PT 1000 a PT 500 a precision high resistance sensor and a voltage sensor During these tests a 3416 AA mounted in a 6100 AA was connected to a 5821 BA via a 2m SCSI cable The whole system was suitably
42. an of Measurement of Channel 8 Voltage Input 36 Figure 55 VXIplug amp play Driver Organization nn nn nnncnnnnnnnns 37 Figure 56 Connecting to The ProDAQ 3416 and ProDAQ 5821 38 Figure 57 Excitation Current Calibration ss 41 Figure 58 Final Configuration Calibration and Measurement Copyright O 2013 Bustec Production Ltd Page 6 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Reference Documents O Number O ProDAQ 3416 User Manual 3416 XX UM ProDAQ 6100 User Manual 6100 XX UM ProDAQ 3180 Hardware Manual 3180 XX HM Glossary Safety This equipment contains voltage hazardous to human life and safety and is able to inflict personal injury Disconnect the device from the AC line mains before opening the covers as described in chapter 3 4 To operate this device use a three conductor power cord and an power outlet providing protective earth Do not use a two conductor extension cord or a three prong two prong adapter If you replace the power cord provided make sure that the replacement is rated for the power consumption stated in the specifications gt gt gt Do not position the device so that it is difficult to operate the disconnecting device If the equipment is used in a manner not specified by the manufacturer its safety may be impaired Waste Electrical and Electronic Equipment WEEE This product complies with the WEEE Directive 2002 96 EC marking requirement
43. ange 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 79 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 24 bu5821_setChanConfig ViStatus bu5821 setChanConfig ViSession instrumentHandle ViInt16 channel ViInt16 mode Vilntl6 gain ViInt16 excitationCurrent Purpose This function configures the specified channel or all 16 channels Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies which channel will be configured Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 OR bu5821 CHAN ALL 0 All 16 channels will be configured with the same parameters mode Variable Type ViInt16 This parameter specifies the channel mode Possible values are bu5821 MODE 4 WIRE 1 4 wire Cable bu5821 MODE 3 WIRE 2 3 wire Cable bu5821 MODE 2 WIRE 3 2 wire Cable bu5821 MODE DIFF VOLT 4 Differential Voltage bu5821 MODE SE VOLT 5 Single Ended Voltage bu5821 MODE GND 6 Input is grounded bu5821 MODE VREF 7 In
44. bled Configuration enabled Figure 17 5821 SFP Enable and Disable Channels The control of each channel is separated using tabs To control channel 10 for example it is necessary to click the Ch 10 tab Each tab is functionally identical The controls in each tab are grouped in three group boxes a Configuration group a Calibration group and a Status group The controls in the Configuration group shown in Figure 18 allow the operator to choose the sensor type the sensor configuration mode the measurement range and for RTD and Resistance measurements the ability to turn the excitation current on and off Settings take place immediately after a change has been selected It is also possible to apply the channel configuration settings to all other channels that have been enabled Configuration Sensor Type Mode Measurement Range PT 100 4 Wire lt 100 C Excitation Current Apply Configuration to all Enabled Channels Figure 18 5821 SFP Configuration Group The possible sensor types available are Temperature PT 100 PT 500 and PT 1000 RTDs Resistive and Voltage type sensors A drop down box shown in Figure 19 allows the operator to select the type of sensor being used Page 19 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Configuration Sensor Type PT 100 de erg PT 500 Mode PT 1000 Res
45. ch of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 89 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 29 bu5821 storeCalibCoeff ViStatus bu5821 storeCalibCoeff ViSession instrumentHandle ViIntl16 type Purpose This function stores the calibration coefficients into the onboard EEPROM memory CAUTION The factory calibration coefficients will be overwritten Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them type Variable Type ViInt16 Specifies which type of calibration coefficient will be stored into EEPROM Possible values are bu5821 CALIB TYPE PGA 1 PGA calibrati
46. codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them Copyright O 2013 Bustec Production Ltd Page 64 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOB00 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 65 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 14 bu5821_getPgaCalibCoeff ViStatus bu5821 getPgaCalibCoeff ViSession instrumentHandle ViInt16 channel ViInt16 gain ViInt16 gainMultiplier ViReal64 calibOffset ViReal64 calibGain Purpose This function retrieves the signal path calibration coefficients currently being used for the specified channel and gain setting Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel betwe
47. d Bustec House Shannon Business Park Shannon Co Clare Ireland Tel 353 0 61 707100 FAX 353 0 61 707106 gt Bustec Inc mm E346 34428 Yucaipa Blvd Yucaipa CA 92399 U S A b es e Tel 1 909 797 0484 Fax 1 760 751 1284 ustec
48. e bu5821 h Page 49 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 3 bu5821_checkECError ViStatus bu5821 checkECError ViSession instrumentHandle ViUInt16 ecErrFlag Purpose This function returns the all 16 channels excitation error status Excitation current error means that the current was applied but it doesn t flow through with specified value because of broken wire or too high resistance of the sensor Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them ecErrFlag Variable Type ViUInt16 passed by reference This parameter holds the bitmask of all 16 channels Excitation Current Error to be returned Each bit represents the following channel Bit0 channel 1 Bitl channel 2 Bit15 channel 15 Possible values 0 No Excitation Current Error Detected 1 Excitation Current Error Detected Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of wa
49. e Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type Viint16 This parameter specifies which channel will be calibrated Possible values are bu5821 CHAN 1 1 Channel 1 bu5821_CHAN_2 2 Channel 2 bu5821_CHAN_15 15 Channel 15 bu5821_CHAN 16 16 Channel 16 excitationCurrent Variable Type ViInt16 This parameter specifies which current source will be used for the current calibration Available values are bu5821_CURRENT_500 1 Exitation current of 500uA will be trimmed bu5821_CURRENT_10 2 Exitation current of 10uA will be trimmed finalCurrentValue Variable Type ViReal64 passed by reference This parameter returns the final measured value of the Excitation Current after the calibration is finished digipotWiperTrimValue Variable Type ViInt16 passed by reference This parameter returns the trimed digipot wiper value The trimmed value will be applied automatically after calibration is done This value is given to the user only for information Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error Co
50. e each of the displays Clicking a down arrow will open a display and the arrow will change to an up arrow Clicking an up arrow will close a display and the arrow will change to a down arrow Figure 15 5821 SFP Start Up Screen Drop Down Arrows 3 1 Channel Configuration To configure the channels select the Channel Configuration button on the right of the soft front panel This will open up a dialog box allowing the operator to set the configuration for each channel as shown in Figure 16 By default channel 1 is enabled and the sensor type set to PT 100 Copyright O 2013 Bustec Production Ltd Page 18 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 2 ProDAQ 5821 Channel Configuration Er Ch1 Ch2 Ch3 Enable Channel Configuration Sensor Type Mode Measurement Range Ch4 Ch 5 Enabled v PT 100 4 Wire lt 100 C ch6 ch 7 Cha Calibration Status Ch 10 Ch 11 Ch 12 Ch 13 Calibrate Channel 1 Calibrate all Enabled Channels chia chl lt gt Excitation Current Status Excitation Current Error Apply Configuration to all Enabled Channels Test Wire Figure 16 5821 Channel Configuration Dialog All other channels are disabled To enable or disable a channel use the drop down box located on the top left of the configuration channel dialog box as shown in Figure 17 Enable Channel Enabled Disa
51. e status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright O 2013 Bustec Production Ltd Page 76 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 21 bu5821_resetCalibCoeff ViStatus bu5821 resetCalibCoeff ViSession instrumentHandle ViInt16 type Purpose Resets the calibration coefficients with default values or with values taken from the onboard EEPROM memory Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them type Variable Type ViInt16 Specifies which type of calibration coefficient will be set Possible values are bu5821 CALIB TYPE PGA 1 Signal path calibration bu5821 CALIB TYPE EXC
52. e time as the current calibration does not require to measure negative values Figure 57 Excitation Current Calibration ViStatus status ViSession session 3416 ViSession session 5821 ViChar descr 256 ViReal64 excitCurrent initialization as per Figure 56 configure channel one of the 3416 for gain 2 front panel connector input if status bu3416 setChanConfig session 3416 bu3416 CHAN 1 bu3416 CH FP bu3416 GAIN 2 VI FALSE lt VI SUCCESS bu3416 error message session 3416 status descr printf Error bu3416 setChanConfig failed due to s n descr return 1 Excitation Current Calibration Step 1 Calibrate the 3416 for GAIN 2 status bu3416 calibrateChannels session 3416 0x0001 bu3416 GAIN 2 VI_NULL VI_NULL VI_NULL lt VI_SUCCESS bu3416 error message session 3416 status descr printf Error bu3416 calibrateChannels failed due to s n descr return 1 configure 5821 channel 1 for gain 1 status bu5821 setChanConfig session 5821 bu5821 CHAN 1 bu5821 MODE 4 WIRE bu5821 GAIN 1 bu5821 CURRENT 500 lt VI SUCCESS bu5821 error message session 5821 status descr printf Error bu5821 setChanConfig failed due to s n descr return 1 Excitation Current Calibration Step 2 Calibrate the signal path of the 5821 status bu5821 pgaCalibration session 5821 bu5821 CHAN 1 bu5821 VREF MASTER POS 0 0 VI NULL VI NULL
53. eeeeeeeeeeeeeseeeeeeeeeeeeeeeeseneeeeeeeeeeeseesnenees 43 5 VXI plug amp play Driver FunctionS se 45 5 1 VXIplug8play Driver Function Details 47 5 1 1 BUSS2 1 DROKEAWIEDSICEL EE 47 5 1 2 bu5821 bu5821 setConversion ccccccccconcccnnnnncnoconononcnnnnnnnnnnnnnannnnnnnnnnnnnnnnnannnnnnoninons 49 51 3 bubez2 ll checkECE O o ao ent 50 5 1 4 bub821_checkECSTatUs iii 51 B15 A ee TEE 52 5 16 bu5821 error Message annuaires hat 53 5 1 7 bu5821 excCalibration iii 54 5 1 8 sbuS821 GerCnan Contd essence ida se lalala 56 5 197 bu58241 qetExCCalIDGOeh EE EEN 58 Page 3 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 10 pu5821 ge tEXCIGU MO Sist ii 59 5 1 11 bu5821 getFGLastError coin li 61 5 1 12 pu5g2 We E EE 62 5 1 13 A nd dt en dc da dt Cat LdC na 64 5 1 14 Buse21 getPgaC ab Mision denied ala 66 5 1 15 bu5821 getVoltReflio viii nulsee te 68 5 1 16 DUSS82 We Ee Eer ONE 69 5 1 17 o RAT E 71 5 1 18 b 5821 pgacallbrati n uvas pr aida 73 5 1 19 bu5821 read Temperatura vesical reacio e dise 75 5 1 20 DEE reset is a A AAAA 76 5 1 21 bu5821_resetCalibCoeff ccccccccnnoccnnnccnnnnnnncccoonnncnnnnnnnnnnonnnnncnnnnnonnnnnnnnnannnnnnnnnnnns 77 5 1 22 pu5821 revisi n E EE 78 5 1 23 bu582 1 ll EE 79 5 1 24 bu5821_setChanConfig EE 80 5 1 25 DOE SETEXCICUrTENLEE ARR te DR A RE RE Te ARE EN GER 82 5 1 26 DUB821 Sellada a ta
54. em if status bu3416_init VXI0 2 INSTR VI TRUE VI TRUE amp session 3416 VI SUCCESS viStatusDesc session 3416 status descr printf Error bu3416 init failed due to s n descr return 1 use function card in position slot 1 status bu3416 fcSelect session 3416 1 VI_TRUE VI SUCCESS viStatusDesc session 3416 status descr printf Error bu3416 fcSelect failed due to s n descr return 1 OR connect to a 3416 in position 1 in a LXI function card carrier status bu3416 paramInit TCPIP 192 168 168 63 INSTR 1 VI TRUE VI TRUE amp session 3416 VI SUCCESS viStatusDesc rm session status descr printf Error bu3416 paramInit failed due to s n descr return 1 connect to the 5821 controled by the 3416 status bu5821 init session 3416 VI TRUE VI TRUE amp session_5821 VI SUCCESS viStatusDesc session 5821 status descr printf Error bu5821 init failed due to s n descr return 1 El Figure 56 Connecting to The ProDAQ 3416 and ProDAQ 5821 For your convenience the driver contains a new function called bu3416 paramInit which combines the functionality of the bu3416_init and bu3416_fcSelect functions by extending Copyright O 2013 Bustec Production Ltd Page 38 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM the argument list of the standard initialization function
55. ement To perform measurements the appropriate ProDAQ 3416 driver function must be used In the example the function bu3416_acquireWaveform is used to acquire 128 Samples at speed of 1000 Samples sec from channel 1 see Figure 58 To do the same on multiple channels the function bu3416_acquireWaveforms can be used For continuous acquisition functions like bu3416 startAcquisition bu3416 stopAcquisition etc must be used for more information refer to the ProDAQ 3416 user manual and driver documentation The following table shows the ProDAQ 5821 configuration parameter to be used for the different types of sensors and measurements calculated to reach the highest accuracy Sensor Range Mode Current 3416 Gain 5821 Gain lt 850 C joe 2 16 PT100 lt 500 C mire 500 pA lt 100 C PRE 2 64 lt 80 C 2 128 lt 850 C SE 2 4 PT500 UC Sue 500 pA a lt 0 Ate 2 16 lt 110 C 2 32 lt 850 C je 2 2 PT1000 lt 30C mire 500 pA S T 4 wire 2 3 lt 110 C 2 16 20 kQ 2 Ya 9kO 2 1 4 5 kO 2 2 2 25 KQ 2 4 1 12 kQ 500 pA 2 8 560 Q 2 16 280 0 2 32 140 0 sates 2 64 70 Q 2 128 Resistance 3 wire 1MO Are 2 Ya 450 kO 2 1 225 kQ 2 2 112 kQ 2 4 10 pA 56 KQ 2 8 28 kQ ee 2 16 14 KQ 2 32
56. en the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies for which channel s configuration will be returned Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 gain Variable Type Viint16 This parameter specifies the gain for which the calibration coefficients will be retrieved Possible values are bu5821 GAIN 1 8 0 Gain 1 8 bu5821 GAIN 1 4 1 Gain 1 4 bu5821 GAIN 1 2 2 Gain 1 2 bu5821 GAIN 1 3 Gain 1 bu5821_GAIN_2 4 Gain 2 bu5821 GAIN 4 5 Gain 4 bu5821 GAIN 8 6 Gain 8 bu5821 GAIN 16 7 Gain 16 bu5821 GAIN 32 8 Gain 32 bu5821 GAIN 64 9 Gain 64 bu5821 GAIN 128 10 Gain 128 gainMultiplier Variable Type Viint16 This parameter specifies the gain for which the calibration coefficients will be retrieved Possible values are bu5821 GAIN MULT 1 0 Gain Multiplier of 1 bu5821 GAIN MULT 1 375 1 Gain Multiplier of 1 375 calibOffset Copyright 2013 Bustec Production Ltd Page 66 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Variable Type ViReal64 passed by reference This parameter returns the calibrated offset value calibGain Variable Type ViReal64 passed by reference This parameter returns the calibrated gain value Return Value If the function
57. eps are necessary The first step is to calibrate the ProDAQ 3416 The second step is to calibrate the signal path of the ProDAQ 5821 and the last step then is to calibrate the excitation current For the best precision the ProDAQ 3416 normally has to be calibrated for each gain separately But due to the design of the gain stage in the ProDAQ 5821 the optimal gain setting for the ProDAQ 3416 when used together with the ProDAQ 5821 is a gain of 2 for all measurements Therefore the calibration of the ProDAQ 3416 only needs to be done once for this particular gain setting The calibration is done by using the function bu3416_calibrateChannels see Error Reference source not found This function takes as input a channel bit mask the setting for the gain the channel s shall be calibrated at and returns after a successful calibration the different coefficients which will be applied by the driver As these coefficients are not used here VI_NULL is passed in the example for those parameters in which case the function ignores them Next the signal path of the ProDAQ 5821 needs to be configured and calibrated for a gain of 1 see Error Reference source not found A oi This ensures the accurate measurements of voltages within the correct range for the current calibration throughout the complete signal path from the ProDAQ 5821 front end to the ProDAQ 3416 ADC This is done by the function bu5821 pgaCalibration The function takes as parame
58. er returns the ProDAQ 5821 subversion in the form of a string i e AA AB or AC serialNumber Variable Type ViInt32 passed by reference This parameter returns the serial number of the ProDAQ 5821 Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the r
59. es the analog signals as well as the control signal for the conditioning card The control of the signal conditioning card is done via an additional VXIplug amp play driver which links to the standard ProDAQ 3416 driver dynamically In this way drivers for different signal conditioning cards can be used at the same time with the ProDAQ 3416 driver 1 1 1 ProDAQ 5720 Signal Conditioning Carrier The ProDAQ 5720 can host up to two signal conditioning cards of the 5820 Series lt provides power and cooling to the cards but provides no functionality of its own It is designed to be mounted in a standard 19 rack 1 2 Features The ProDAQ 5821 RTD Signal Conditioning Card provides excitation current compensation modes gain etc for resistive type sensors such as Resistance Temperature Detectors RTD A RTD sensing element consists of a wire coil or deposited film of pure metal The element s resistance increases with temperature in a known and repeatable manner RTD s exhibit excellent accuracy over a wide temperature range and represent the fastest growing segment among industrial temperature sensors Their advantages include a large Page 9 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual temperature range typically 260 to 850 C a low drift per year ordinary RTD s typically drift less than 0 1 C year a good linearity better than thermocouples and an industrial
60. fferentiate between them voltRefModule Variable Type ViInt32 passed by reference This parameter returns which voltage reference module is currently used to generate the voltage reference Possible values are bu5821 VREF NO VREF 0 No VREF used bu5821 VREF OV 1 OV to all channels bu5821_VREF_FROM_MASTER VREF from master function card to all channels bu5821 VREF CUSTOM 4 Custom VREF from external VREF connector to all channels N voltage Variable Type ViReal64 passed by reference This parameter returns the current output voltage of the voltage reference module monitor Variable Type ViBoolean passed by reference This parameter returns whether the voltage reference output is routed to the ProDAQ 5821 rear panel connector for monitoring purposes Possible values are VI_FALSE Voltage reference output is disconnected from the ProDAQ 5821 rear panel connector VI_TRUE Voltage reference output is connected to the ProDAQ 5821 rear panel connector Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary
61. for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright 2013 Bustec Production Ltd Page 78 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 23 bu5821_serialNumber ViStatus bu5821 serialNumber ViSession instrumentHandle ViChar subversion Viint32 serialNumber Purpose This function returns the ProDAQ 5821 device subversion and serial number Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them subversion Variable Type ViChar This paramet
62. g links on the input connector between 1 S and S l as shown in Figure 8 TS q 2 oO o TS Figure 8 ProDAQ 5821 Ax 2 wire sensor connection ProDAQ 5821 Bx versions The ProDAQ 5821 Bx versions support the channel configuration for the different sensor connections internally To connect to your sensor in a 2 wire configuration simply attach the lead wires to the excitation signal contacts of the plug I I The connection to the sensing inputs is made internally in the ProDAQ 5821 when configuring the particular channel for 2 wire mode via the driver functions No external shortening links are necessary between 1 S and S I Figure 9 ProDAQ 5821 Bx 2 wire sensor connection 2 3 2 3 Wire Configuration ProDAQ 5821 Bx versions only To connect a sensor using 3 wires connect the lead wires to the excitation contacts and additionally the negative sense contact S of the plug The compensation for the missing fourth wire is automatically activated when configuring the particular channel for 3 wire mode via the driver functions Copyright O 2013 Bustec Production Ltd Page 14 of 94 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Sensor Figure 10 ProDAQ 5821 Bx 3 wire sensor connection 2 3 3 4 Wire Configuration For the 4 wire configuration separate sense and excitation wires need to be connected to the sensor This configuration yields the highest measurement accuracy Sen
63. h calibration of the specified channel The calibration is performed for the current setting of the gain The obtained calibration coefficients are applied automatically after calibration is done The function gives to user obtained offset and gain only for information Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies which channel will be calibrated Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 voltRefSource Variable Type Viint16 This parameter specifies which voltage reference source will be used for calibration Possible values are bu5821 VREF NO VREF 0 No Volatge Reference module will be used Only offset will be calibarted bu5821 VREF OV 1 The same as bu5821 VREF NO VREF bu5821 VREF FROM MASTER 2 Voltage reference module located on the motherboard module of the master function card Calibration for negative and positive voltages will be done bu5821_VREF_MASTER POS 3 Voltage reference module located on the motherboard module of the master function card Calibration only for positive voltages will be done It gives better prec
64. i BA 0 10076 ad Measured Voltage Mean Value y Channel 7 0 1007658V Figure 54 Statistics Mean of Measurement of Channel 8 Voltage Input Copyright 2013 Bustec Production Ltd Page 36 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 4 Programming the ProDAQ 5821 This chapter shows how to program the ProDAQ 5821 signal conditioning card using the VXIplug amp play driver Complete examples can be found in the Examples subdirectory of the driver All functions are explained in detail in the help file coming with the driver 4 1 VXIplug amp play Driver Organization The VXlplug amp play driver is organized in a hierarchical manner to allow the user to quickly choose the function calls to solve the task at hand without being confronted with unnecessary details Besides the standard connection disconnection and utility functions it contains different levels of functionality which provide single functions or sets of functions to solve a particular data acquisition task Function Tree Layout ProDAQ 5821 RTD Signal Conditioning Card Initialization bu5821_ init Hardware Configuration Set Channel Configuration bu5821_setChanConfig Get Channel Configuration bu5821_getChanConfig Calibration Functions Signal Path Calibration bu5821_pgaCalibration Excitation Current Calibration bu5821_excCalibration Low level Access Utility Functions Read Temperature bu5821_readTemperature Reset bu
65. ifferent types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOB00 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 81 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 25 bu5821_setExcitCurrent ViStatus bu5821 setExcitCurrent ViSession instrumentHandle ViInt16 channel ViInt16 excitationCurrent Purpose This function sets the excitation current for the selected channel or all 16 channels
66. igure 49 shows the final set up r S ProDAQ 5821 Channel Configuration E cha ch2 ch3 ch4 chs che ch7 Chs cho om chit chi2 chi3 chag chi lt gt Enable Channel Enabled v Configuration Calibration f ne ES Calibrate Channel 8 Mode Aire 7 Calibrate all Enabled Channels Measurement Range lt 9KQ Status Excitation Current Status Excitation Current 500uA v 2 Error Apply Configuration to all Enabled Channels Test Wire Figure 49 Configuration of Channel 8 Resistance 4 Wire Mode Selected Channel 8 was calibrated and the configuration dialog box closed A test was made using 50 samples at 100Hz sampling rate Figure 50 shows the result The 50 measurements vary from 4999 640 to 4999 730 Figure 51 shows that the mean resistance value is 4999 690 a difference of just 80mQ or just 0 0016 from the value calibrated using an 8 5 digit DMM The peak peak variation around the mean is about 40mQ or 0 0008 Page 33 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual r Se ProDAQ 5821 Soft Front Panel 192 168 168 154 I ee Voltage Waveform Resistance Waveform 4 999 74 Waveform Length Resistance N 4 399 66 4 999 64 Temperature Waveform LIST E Measured Resistance Mean Value Channel 8 4999 691 Ohm s Figure 51 Statistics Mean of Measureme
67. in 4 wire mode the resistance of the load was previously confirmed to be 1249 950 well within the 125mQ specification quoted by the manufacturer A resistance of 1249 950 equates to a temperature of 64 57 C for the PT 1000 sensor and 408 42 for a PT 500 Channel 9 was enabled and the sensor type set to PT 1000 with 4 wire mode The current was set to 500UA As the expected temperature was 64 57 C the temperature range was set to lt 300 C the maximum recommended operating temperature for this range in order to maximize the measurement accuracy A calibration was then made and results taken Figure 45 shows the measured waveform and Figure 46 gives a mean value of 64 58 C a difference of just 0 01 C from the theoretical value lt can be seen that the peak peak variation around this mean is less than 0 01 C 5 2 ProDAQ 5821 Soft Front Panel 192 168 168 154 H Idle Acti Voltage Waveform E instO Resistance Waveform v FC 1 Temperature Waveform A 64 595 Waveform Length 9 1000 ei Sampling Rate 1kHz X 64 585 Temperature C 2 o D Measured Temperature Mean Value Channel 9 64 58183 C Figure 46 Statistics Mean of Measurement of Channel 9 sensor PT 1000 Page 31 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Channel 9 was then set to PT 500 with 4 wire mode As the expected temperature was 408 4
68. interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 51 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 5 bu5821_close ViStatus bu5821 close ViSession instrumentHandle Purpose This function closes the instrument and frees the resources allocated by the call to the initialization function bu5821 init This function must be called once for every instrument handle returned by the initialize function prior to terminating the application program Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the functio
69. ion from voltage to resistance will be applied Otherwise the data will not be converted Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu3416 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOA00 to Ox3FFCOAFF and error codes in the range OxBFFCOAO0 to OxBFFCOAFF They are defined in the include fil
70. ision if input signal supposed to have only positive values like PT100 bu5821_VREF_CUSTOM 4 User voltage reference is used which is connected to monitor input User must know exactly the value of voltage and enter this value to the Voltage parameter Page 73 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual voltRefValue Variable Type ViReal64 This parameter is used only if external voltage reference module is used VoltRefSource bu5821 VREF CUSTOM In this case it should contain the value of the voltage reference applied to the Voltage Reference Monitor input For othe types of calibration this parameter is ignored offset Variable Type ViReal64 passed by reference This parameter returns the calibrated offset value of the channel gain Variable Type ViReal64 passed by reference This parameter returns the calibrated gain value of the channel Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return
71. istance Voltage Measurement Range YU el Excitation Current 500uA A Apply Configuration to all Enabled Channels Figure 19 5821 SFP Sensor Selection Depending upon the version of the 5821 both the temperature and resistive sensors may be operated in three different modes namely 2 wire 3 wire and 4 wire mode These modes are described in section Error Reference source not found Note that the 5821 Ax only has 4 wire mode available Configuration Sensor Type PT 100 ds pemo o PT 500 Mode pr 1000 Resistance Voltage Measurement Range IU sanf Excitation Current 500uA v Apply Configuration to all Enabled Channels Figure 20 5821 SFP Mode Selection RTD or Resistor Both the temperature and resistive sensors generally require an excitation current This current may be switched on or off For the 5821 xA the current is nominally 500A For the 5821 BB a second current level of nominally 10uA is also available During calibration the set current is calibrated and used during Data Acquisition DA The current is also adjusted in order to be as close as possible to the nominal value This feature is useful for cryogenic diodes for example where the diode output voltage over temperature is normally specified for a given current level generally 10pA If the selected sensor type is Voltage then two modes of operation are possible namely Differential Voltage and Single Ended Voltage as shown in Figure
72. ked Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 OR bu5821 CHAN ALL 0 All 16 channels will be configured with the same parameters currentPosWireStatus Variable Type ViInt16 passed by reference This parameter holds the Current Wire status to be returned Possible values bu5821 WIRE BROKEN 1 Wire broken detected bu5821 WIRE OK 0 Wire broken undetected NOTE If only one channel is selected the parameter should be allocated as a one element array however if all channels are selected the array should be allocated as a 16 element array currentNegWireStatus Variable Type ViInt16 passed by reference This parameter holds the Current Wire status to be returned Possible values bu5821 WIRE BROKEN 1 Wire broken detected bu5821_WIRE_OK 0 Wire broken undetected NOTE If only one channel is selected the parameter should be allocated as a one element array however if all channels are Page 47 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual selected the array should be allocated as a 16 element array signalPosWireStatus Variable Type ViInt16 passed by reference This parameter holds the Signal Wire status to be returned Possible values bu5821 WIRE BROKEN 1 Wire broken detected bu5821_WIRE_OK 0 Wire broken undetected NOTE If only one channel is selec
73. lium liquefiers cryogenic distribution systems and similar equipment Cryogenic diodes are supported only by the BB version of the ProDAQ 5821 With resistive devices the lead wire resistance directly affects its accuracy The error can be quite large depending on the lead wire resistance The ProDAQ 5821 supports different types of connection schemes for the sensors to compensate for the lead wire resistance 2 wire One lead wire is connected to each lead of the sensor This arrangement is suitable for uses where the lead wire resistance may be considered as a constant in the circuit where changes in the lead wire resistance due to ambient temperature changes can be ignored or where the lead resistance is a fraction of the sensor resistance 3 wire This is the most common of RTD configurations One lead wire is connected to one lead of the element and two lead wires are connected to the other lead A special built in compensation circuit adds the fourth wire ProDAQ 5821 Bx only providing a precision comparable to the 4 wire compensation mode while allowing for less expensive cabling 4 wire The most accurate of the RTD configurations this element uses two wires for each lead of the sensor By measuring the voltage directly at the sensor compensation is made for the resistance in each lead wire allowing for a highly accurate temperature measurement Copyright 2013 Bustec Production Ltd Page 10 of 94 ProDAQ 5821
74. ll three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to Copyright O 2013 Bustec Production Ltd Page 86 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOB00 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 87 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 28 bu5821_setVoltRefOutput ViStatus bu5821 setVoltRefOutput ViSession instrumentHandle ViInt32 voltRefModule ViReal64 voltage ViBoolean monitor Purpose This function sets the specified v
75. mode and a gain of 64 to use a PT100 sensor and then the signal path is again calibrated using the function bu5821_pgaCalibration see Figure 58 amp O ViReal64 dblBuf 128 initialization and excitation current calibration Bek configure the ProDAQ 5821 for 3 wire mode gain 64 exc current 500 uA status bu5821 setChanConfig session 5821 bu5821 CHAN 1 bu5821 MODE 3 WIRE bu5821 GAIN 64 bu5821 CURRENT 500 lt VI SUCCESS bu5821 error message session 5821 status descr printf Error bu5821 setChanConfig failed due to s n descr return 1 Final Signal Path Calibration status bu5821 pgaCalibration session 5821 bu5821 CHAN 1 bu5821 VREF MASTER POS 0 0 VI NULL VI_NULL lt VI SUCCESS bu5821 error message session 5821 status descr printf Error bu5821 pgaCalibration failed due to s n descr return 1 acquire 128 Samples at 1000 Samples sec if status bu3416 acquireWaveform session 3416 bu3416 CHAN 1 bu3416 CH FP bu3416 GAIN 2 VI FALSE 1000 0 128 dbiBuf VI NULL lt VI SUCCESS bu3416 error message session 3416 status descr printf Error bu3416 acquireWaveform failed due to s n descr return 1 SE Figure 58 Final Configuration Calibration and Measurement Copyright O 2013 Bustec Production Ltd Page 42 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 4 5 Performing a Measur
76. n bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright 2013 Bustec Production Ltd Page 52 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 6 bu5821_error_message ViStatus bu5821 error message ViSession instrumentHandle ViStatus errorReturnValue ViChar
77. n values which allow an operator to make extremely accurate measurements without performing further calibration However for the highest accuracy it is recommended that an online calibration be made after the system has warmed up sufficiently 30 minutes minimum To make an online calibration the operator simply has to click the button Calibrate Channel as shown in Figure 27 Alternatively all enabled channels may be calibrated sequentially using the Calibrate All Enabled Channels button Note that this might take some time if a lot of channels are enabled Calibration Calibrate Channel 1 Calibrate all Enabled Channels Figure 27 5821 SFP Calibration Frame An online calibration makes a calibration at the configuration settings chosen by the operator Furthermore in the case of temperature and resistive sensors it automatically calibrates current by using the 3416 to measure the voltage across the internal precision resistor used for setting the excitation current This high precision resistor has a tolerance of 0 01 and a temperature drift of just 1ppm C Calibration may be made with or without a sensor connected lf no sensor is connected the software detects this fact and automatically grounds the output of the current source in order to allow current calibration to be made lf a sensor is detected then the current flowing through that sensor is calibrated and adjusted to the set value 500A or 10uA The calibra
78. nality to work and in general the access to the function card to be possible If Auto Find is selected and there are multiple ProDAQ 3416 5821 cards the user will be presented with a dialog box showing all available ProDAQ 3416 cards allowing the selection of one function card to connect to It is important that the user choose a 3416 card that has a 5821 connected to it otherwise an initialization error will occur The soft front panel is not designed to handle more than one function card and signal conditioning card at a time If there is only one function card signal conditioning card available the dialog box will not appear and the soft front panel application will automatically establish communication to this instrument If no ProDAQ 3416 5821 is available in your system the soft front panel application can be run in demo mode allowing operation of all controls as if connected to an instrument If Enter Address is selected the user is presented with a dialog box that allows entering the VISA resource string and the 3416 function card number directly as shown in Figure 13 CZ ProDAQ 5821 SFP Enter Function Card Addres Es Instrument Descriptor VXI0 1 INSTR Function Card Number Select Cancel Figure 13 Entering Function Card Address The resource string and range of function card numbers differ depending on the ProDAQ Motherboard or Carrier that the ProDAQ 3416 is installed on Please refer to
79. ndle will be used to differentiate between them temperature Variable Type ViReal64 passed by reference This control returns the temperature from onboard temperature sensor in degrees Celsius Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FF
80. nel Configuration Dialog cccccccccccessseeeeeeeeeeeceennneeeeeeeeeessecenaeeeeeeeeeeeeeeas 19 Figure 17 5821 SFP Enable and Disable Channels EE 19 Figure 18 5821 SFP Configuration Group ta 19 Figure 19 5821 SFP Sensor Selection EE 20 Figure 20 5821 SFP Mode Selection RTD or Resistor 20 Figure 21 5821 SFP Mode Selection Voltage ene 21 Figure 22 5821 SFP Measurement Range Selection Temperature Gensorg 21 Figure 23 5821 SFP Measurement Range Selection too Low PT 100 ooooccccccnnccccoccccncciconancnnnns 21 Figure 24 5821 SFP Measurement Range Selection Resistive Sensors 500UA current 22 Figure 25 5821 SFP Measurement Range Selection Resistive Sensors 10A current 22 Figure 26 5821 SFP Measurement Range Selection Voltage Sensors oooocccccccccccccccccccccaanannn 22 Figure 27 5821 SFP Calibration NEE 23 Figure 28 5821 SFP E ele 23 Figure 29 5821 SFP Excitation Current Status LED green 24 Figure 30 5821 SFP Excitation Current Status LED red 24 Figure 31 5821 4 Wire Mode All Wires OK is 25 Figure 32 5821 4 Wire Mode Broken l Wure 25 Figure 33 5821 4 Wire Mode Broken S Wire ss 25 Figure 34 5821 3 Wire Mode No S Wire so all wires OK 25 Figure 35 5821 2 Wire Mode No S S Wires so all wires OK 25 Figure 36 Configuration of Channel TA A A dire needs 26 Figure 37 Channel
81. nel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies which channel will be configured Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 OR bu5821 CHAN ALL 0 All 16 channels will be configured with the same parameters gain Variable Type ViInt16 This parameter specifies the gain for the input channel Possible values are bu5821 GAIN 1 8 0 Gain 1 8 bu5821 GAIN 1 4 1 Gain 1 4 bu5821 GAIN 1 2 2 Gain 1 2 bu5821 GAIN 1 3 Gain 1 bu5821 GAIN 2 4 Gain 2 bu5821 GAIN 4 5 Gain 4 bu5821 GAIN 8 6 Gain 8 bu5821 GAIN 16 7 Gain 16 bu5821 GAIN 32 8 Gain 32 bu5821 GAIN 64 9 Gain 64 bu5821 GAIN 128 10 Gain 128 Default value 3 bu5821 GAIN 1 Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message
82. nt of Channel 8 sensor 5kQ Resistance Copyright O 2013 Bustec Production Ltd Page 34 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 3 4 5 Measuring a Voltage Signal A 100mV DC voltage was set up and measured using a calibrated 8 5 digit DMM The measured value was 100 771mV Chanel 7 was set up for voltage as shown in Figure 52 and calibrated online The measurement range was 0 14V r a SZ ProDAQ 5821 Channel rati E Chi ch2 ch3 ch4 chs ch Ch7 cha che chio chit chi2 ch13 ch14 olzltl Enable Channel Enabled v Configuration Calibration Calibrate Channel 7 Sensor Type Voltage v Mode Differential Voltage Calibrate all Enabled Channels Measurement Range Status A Excitation Current Status Excitation Current Off sl Error Apply Configuration to all Enabled Channels Test Wire Figure 52 Configuration of Channel 8 Voltage Input Figure 53 shows the result of the measurement while Figure 54 shows that the mean measured voltage was 100 766mV a difference of 5uV from the mean value measured by the 8 5 digit DMM The peak peak variation around the mean was about 45uV or 7uVRMS An error of 5uV on a 100mV range is 0 005 Full Scale Page 35 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual ES ProDAQ 5821 Soft Front Panel 192 163 158 154 0 10075 0 50078
83. oard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright 2013 Bustec Production Ltd Page 48 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 2 bu5821_bu5821_setConversion ViStatus bu5821 bu5821 setConversion ViSession instrument Handle Viint32 channelMask Purpose This function specifies if the conversion from voltage to resistance will be applied to the acquired data for specific channel s Parameter List instrument_Handle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them channelMask Variable Type ViInt32 Decide which channel s acquired data will be converted from voltage to resistance The value is a bit mask Bit 0 corresponds to channel 1 Bit 15 corresponds to channel 16 To set N th bit as 1 channel N 1 s output data convers
84. oltage reference module output voltage Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them voltRefModule Variable Type ViInt32 This parameter specifies which voltage reference module will be used to generate the voltage reference Possible values are bu5821 VREF NO VREF 0 No VREF used bu5821 VREF OV 1 OV to all channels bu5821_VREF_FROM_MASTER VREF from master function card to all channels bu5821_VREF_CUSTOM 4 Custom VREF from external VREF connector to all channels N WARNING Please always make sure that if you use external voltage reference to disconnect it or set Monitor parameter to VI_FALSE when changing the voltage reference source voltage Variable Type ViReal64 This parameter specifies the output voltage of the voltage reference module The available set of voltages depend on the type of the selected voltage reference module If the voltage reference module is unable to generate the requested message the function will return an error status If the external voltage reference module is used this parameter will contain the actual voltage provided by the external voltage reference source monitor Variable Type ViBoolean This parameter specifies whether the volt
85. on type bu5821 CALIB TYPE EXC 2 EXECITATION calibration type bu5821 CALIB TYPE ALL 3 PGA amp EXECITATION calibration type Return Value If the function was successful it will return a status of VI SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF
86. put is connected to Voltage Reference bu5821 MODE IREF 8 Input is connected to Excitation Current Reference bu5821 MODE IREF GND 9 Input is connected to Excitation Current Reference but I path is grounded can be used to measure the current without external load Default value 1 bu5821 MODE 4 WIRE gain Variable Type ViInt16 This parameter specifies the channel gain Possible values are bu5821_GAIN 18 0 Gain 1 8 bu5821 GAIN 1 4 1 Gain 1 4 bu5821 GAIN 1 2 2 Gain 1 2 Copyright 2013 Bustec Production Ltd Page 80 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM bu5821_GAIN 1 3 Gain 1 bu5821_GAIN_2 4 Gain 2 bu5821 GAIN 4 5 Gain 4 bu5821 GAIN 8 6 Gain 8 bu5821 GAIN 16 7 Gain 16 bu5821 GAIN 32 8 Gain 32 bu5821 GAIN 64 9 Gain 64 bu5821 GAIN 128 10 Gain 128 Default value 3 bu5821 GAIN 1 excitationCurrent Variable Type ViInt16 This parameter specifies the Excitaion Current Available values are bu5821_CURRENT_OFF 0 Exitation current is not applied bu5821_CURRENT_500 1 Exitation current of 500uA is applied bu5821_CURRENT_10 2 Exitation current of 10uA is applied Default value 0 bu5821 CURRENT OFF Return Value If the function was successful it will return a status of VI SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three d
87. pyright O 2013 Bustec Production Ltd Page 54 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 55 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 8 bu5821_getChanConfig ViStatus bu5821 getChanConfig ViSession instrumentHandle
88. rd User Manual 5 1 15 bu5821_getVoltRefinfo ViStatus bu5821_getVoltRefInfo ViSession instrumentHandle ViInt16 nVolts ViReal64 voltages Purpose This function returns the voltages available on the master function card carrier Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them nVolts Variable Type ViInt16 passed by reference Returns the number of voltages available on the selected voltage reference module voltages Variable Type ViReal64 This array contains the list of all possible voltages generated by the voltage reference module It should be allocated with size 20 prior to the function call Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Erro
89. re than one instrument of the same model type is used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies which channel will be configured Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 OR bu5821 CHAN ALL 0 All 16 channels will be configured with the same parameters mode Variable Type ViInt16 This parameter specifies the channel mode Possible values are bu5821 MODE 4 WIRE bu5821 MODE 3 WIRE bu5821 MODE 2 WIRE bu5821 MODE DIFF VOLT bu5821 MODE SE VOLT bu5821 MODE GND bu5821 MODE VREF bu5821 MODE IREF 4 wire Cable 3 wire Cable 2 wire Cable Differential Voltage Single Ended Voltage Input is grounded Input is connected to Voltage Reference Input is connected to Excitation Current Reference bu5821 MODE IREF GND 9 Input is connected to Excitation Current Reference but I path is grounded can be used to measure the current without external load 0 Jo DG OM Default value 1 bu5821_MODE 4 WIRE Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle a
90. ree different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright O 2013 Bustec Production Ltd Page 72 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 18 bu5821_pgaCalibration ViStatus bu5821 pgaCalibration ViSession instrumentHandle ViInt16 channel ViInt16 voltRefSource ViReal64 voltRefValue ViReal64 offset ViReal64 gain Purpose This function performs the signal pat
91. right 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Measured Temperature Mean Value Channel 1 0 122482 C Figure 43 Statistics Mean of Measurement of Channel 1 PT100 sensor 3 Wire Mode In order to demonstrate how effective the 3 Wire compensation circuit is channel 1 was configured for 4 Wire mode but only 3 wires were connected to the 1000 resistor In order for the channel to function correctly S and l were shorted at the connector A measurement was then made using the same measurement range Figure 44 shows the result The error without using 3 Wire compensation is now about 6 5 C about 50 times worse than using the compensation Obviously this figure would vary with sensor resistance cable length and size Res sot Front Panes i zaonsooi5 KSE ERI Idle Acti Voltage Waveform 2 Se instO Resistance Waveform y FC 1 Temperature Waveform A Waveform Length 1000 X Sampling Rate 1kHz X Temperature C Figure 44 Measurement of Channel 1 PT100 4 Wire Mode S and l Shorted Externally Copyright 2013 Bustec Production Ltd Page 30 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 3 4 3 Measuring a 1 25kQ Resistor as a PT 1000 and PT 500 A 1 25kQ 0 01 1ppm resistor was connected to channel 9 via a 30m 24AWG multi core cable and connected in 4 wire mode Using an 8 5digit DMM operating
92. rnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright 2013 Bustec Production Ltd Page 50 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 4 bu5821_checkECStatus ViStatus bu5821_checkECStatus ViSession instrumentHandle ViUInt16 statusFlag Purpose This function returns the excitation current status of all 16 channels Parameter List instrumentHandle Variable Type ViSession The Inst
93. rs See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright 2013 Bustec Production Ltd Page 68 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 16 bu5821_getVoltRefOutput ViStatus bu5821 getVoltRefOutput ViSession instrumentHandle ViInt32 voltRefModule ViReal64 voltage ViBoolean monitor Purpose This function returns the current output voltage of the voltage reference module Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to di
94. rument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this handle will be used to differentiate between them statusFlag Variable Type ViUInt16 passed by reference This parameter holds the bitmask of all 16 channels Excitation Current Status Each bit represents the following channel Bit0 channel 1 Bitl channel 2 Bit15 channel 15 Possible values 0 No Excitation Current Detected 1 Excitation Current Detected Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard
95. s used this handle will be used to differentiate between them channel Variable Type ViInt16 This parameter specifies for which channel s gain setting to be returned Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 gain Variable Type ViInt16 passed by reference This parameter returns the gain of the specified channel Possible values are bu5821 GAIN 1 8 0 Gain 1 8 bu5821 GAIN 1 4 1 Gain 1 4 bu5821 GAIN 1 2 2 Gain 1 2 bu5821 GAIN 1 3 Gain 1 bu5821_GAIN_2 4 Gain 2 bu5821 GAIN 4 5 Gain 4 bu5821 GAIN 8 6 Gain 8 bu5821 GAIN 16 7 Gain 16 bu5821 GAIN 32 8 Gain 32 bu5821 GAIN 64 9 Gain 64 bu5821 GAIN 128 10 Gain 128 Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of
96. sor OOOO Figure 11 4 wire sensor connection Page 15 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual This page was intenionelly left blank Copyright O 2013 Bustec Production Ltd Page 16 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 3 The ProDAQ 5821 Soft Front Panel The purpose of soft front panel application is to demonstrate the instrument s abilities The 5821 SFP connects to a 5821 via its control 3416 After the start of the soft front panel application the user has the choice to either enter the address information VISA resource specification and function card number of the function card the soft front panel application shall connect to or else to use the built in Auto Find functionality in order to discover accessible ProDAQ 3416 5821 cards FS ProDAQ 5821 Demo Select pS O How to connect to 5821 Signal Conditioning Card Auto Find Run In Demo Mode Enter Address Cancel Figure 12 Function Card Selection Please note that the Auto Find find functionality will only inspect network resources that are known to the VISA library to avoid unwanted accesses of network resources that might be unintentionally reachable via the local network For VXlbus resources running the VISA resource manager prior to running the soft front panel application is necessary for both the Auto Find functio
97. ta ici 11 2 1 Mounting the ProDAQ 5720 into a 19 rack ns 11 2 2 Connecting to a ProDAQ 3416 ADC Function Card oooccccnnnnnnncccccncncnnnnnnnnanaccnnnnnnnnnnnnas 12 2 3 Connecting your Sensors mnmoocccccccnnnnnnanaccnnnnnncnnnnnnnncc cnn cnn cnn cnn 13 23 1 2 Wire COMU AMO aii ne ne dent 14 23 2 a IE COMIQUEROS ead Se peace tas 14 2 3 3 4 Wire ee le UE 15 3 The ProDAQ 5821 Soft Front Panel ss 17 Sela Channel GomtlQuratlon WE 18 3 2 Channel CalibratioM add csfi amende dns stress trees 22 Biss Channel Status catala 23 3 4 Making a Measurement snnnnerssnnnnnennnneenenesnnnnnnennneeennnne 25 3 4 1 PT 100 operating at A ee Ne MN ner 26 3 4 2 PT 100 operating at 0 C in 3 Wire Mode 27 3 4 3 Measuring a 1 25kQ Resistor as a PT 1000 and PT 500 31 3 4 4 Measuring a 5kO Resistor tnt tente daa ctrl ciel di 33 3 4 5 Measuring a Voltage Signal 35 4 Programming the ProDAQ 582 pts it s pie sites t nibenseees di 37 4 1 VXIplug amp play Driver Organization nes 37 4 2 Connecting to the Function Card and Signal Conditioning Card oommnncccccconnnnnnnnn 38 4 3 Hardware Configuration 39 4 3 1 ProDAQ 3416 Channel Configuration 39 4 3 2 ProDAQ 5821 Channel Configuration ss 39 A O A 40 4 4 1 Excitation Current Calibration ss 40 4 4 2 Final Galbtavon sra is eal iene waa eden eh tata le 42 4 5 Performing a Measurement csseseeeeeeeeeeeeeeeeee
98. tch pluggable terminal block style connectors for the sensor connection Weidm ller BL 3 5 04 180F SN BK P N 1615800000 Lead wires of sizes between 28 AWG and 14 AWG 0 2 mm to 1 5 mm can be directly inserted into the plug and are secured by a clamping yoke screw system Figure 5 Sensor Connector Once plugged in the connector can be secured by two screws to the socket Screwdnver D 4mm x 2 5mm Sensor Wire CG 2n to Smi Le AAA Screwdriver 0 4mm x 2 5mm Weidm ller BL 3 5 4F SN SW PH 1615800000 Figure 6 Wire and Plug Assembly Each connector has four positions for connecting excitation and sensing leads dependent on the chosen configuration l S S l Sense Excitation Figure 7 Connector Pin out Page 13 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual The ProDAQ 5821 comes in different versions Only the Bx versions are equipped internally with relays to make necessary connections for example between l and S in 2 wire mode the Ax versions do not support the configuration of the channels for different connection modes by software 2 3 1 2 Wire Configuration ProDAQ 5821 Ax versions The ProDAQ 5821 Ax versions do not support the channel configuration for different sensor connections It is required instead that the wiring of the input connector is made accordingly For a 2 wire configuration this requires to add shortin
99. ted the parameter should be allocated as a one element array however if all channels are selected the array should be allocated as a 16 element array signalNegWireStatus Variable Type ViInt16 passed by reference This parameter holds the Signal Wire status to be returned Possible values bu5821 WIRE BROKEN 1 Wire broken detected bu5821_WIRE_OK 0 Wire broken undetected NOTE If only one channel is selected the parameter should be allocated as a one element array however if all channels are selected the array should be allocated as a 16 element array Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100 error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherb
100. ters again a channel number bu5821 CHAN 1 tO bu5821 CHAN 16 and a selection of the reference source and returns the coefficients the driver will use To perform voltage calibration on the ProDAQ 5821 there are several options If no voltage reference is present in the system the ProDAQ 5821 can only perform an offset calibration In this case you need to use the reference source selection bu5821 VREF NO VREF H the controlling ProDAQ 3416 is installed on a VXIbus motherboard or LXI function card carrier with a voltage reference installed so that this reference voltage is forwarded to the ProDAQ 5821 the source selections bu5821_VREF_OV bu5821 VREF FROM MASTER Or bu5821 VREF MASTER POS Can be used In case of bu5821_VREF OV again only an offset calibration is performed but the ground reference of the master is used bu5821 VREF FROM MASTER performs a full calibration while bu5821 VREF MASTER POS Only performs an offset calibration Another option to perform calibration is to use an external calibrator connected to the voltage reference monitor connector on the ProDAQ 5821 In this case bu5821_VREF CUSTOM must be used and the exact voltage need to be specified as the fourth parameter for the function Copyright 2013 Bustec Production Ltd Page 40 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM bu5821_pgaCalibration In the example see Error Reference source not found bu5821 VREF MASTER POS is used to sav
101. the motherboard carrier user manual for more information After initializing the ProDAQ 3416 function card and ProDAQ 5821 signal conditioning card during which a splash screen is displayed the soft front panel window shown in Figure 14 will appear Page 17 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual r em SS ProDAQ 5821 Soft Front Panek 192 168 168 154 La bal Idle voltage Wavetorn v Pune nen Reesterce Wavetorm i Tenpersise Waveform 1 900 Weveform Length 1000 H 200 Sampirg Rete ihe hd S 609 5 Autracale OF E na Stats H a E Channel zo Configursten g Reset Devoe 400 he About Chose Figure 14 5821 SFP Initial Start Up Screen The soft front panel has separate graphical displays for the three different types of measurement possible using the ProDAQ 5821 namely Voltage Resistance and Temperature Depending on the channel configuration the graph for the channel will be shown in the related graphical display Thus all channels set to Voltage will be grouped together in the Voltage Waveform graphical display and similarly for Resistance and Temperature Only channels that are Enabled will be displayed After startup only the graphical display for the temperature display is visible as by default only channel one which is set for PT 100 measurement is enabled Using the buttons to the right of the dividers you can hide unhid
102. the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright O 2013 Bustec Production Ltd Page 74 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM 5 1 19 bu5821_readTemperature ViStatus bu5821 readTemperature ViSession instrumentHandle ViReal64 temperature Purpose This function reads the temperature from the onboard ProDAQ 5821 temperature sensors Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication channel between the driver and the instrument If more than one instrument of the same model type is used this ha
103. the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard Copyright 2013 Bustec Production Ltd Page 82 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFCO0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 83 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 5 1 26 bu5821_setGain ViStatus bu5821 setGain ViSession instrumentHandle ViInt16 channel ViInt16 gain Purpose This function sets the gain of PGA for the specified channel or all 16 channels Parameter List instrumentHandle Variable Type ViSession The Instrument Handle is used to identify the unique session or communication chan
104. tion process involves three steps all of which are invisible to the user First a voltage calibration of the signal path is made then a voltage calibration of the current path is made and finally a calibration of the excitation current is made In this way the highest possible accuracy is achieved 3 3 Channel Status Figure 28 shows a screenshot of the Channel Status group box It contains two LED controls and a Test Wire button The Excitation Current Status LED indicates the status of the excitation current If the excitation current is off then the Excitation Current Status LED will be off grey as shown in Figure 28 Status Excitation Current Status Error Figure 28 5821 SFP Channel Status If the excitation current is turned on and is flowing correctly then the Excitation Current Status LED will be green as shown in Figure 29 Page 23 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual Status Excitation Current Status Error Test Wire Figure 29 5821 SFP Excitation Current Status LED green If the excitation current is turned on but is not flowing correctly then the Excitation Current Status LED will be red as shown in Figure 30 Note that the error LED has not indicated an error Thus the operator needs to check that the status of both LEDs is as expected Status 9 Excitation Current Status Error Test Wire Figure 30
105. uoted by the manufacturer A resistance of 100 007Q equates to a temperature of 0 018 C for the PT 100 sensor Figure 39 shows the initial screen after the Channel Configuration button is clicked The Status LEDs show that the excitation current is off and also that there is an error detected Page 27 of 94 Copyright 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual r S ProDAQ 5821 Channel Configuration EI Chi ch2 ch3 cha chs che ch7 chs cho om ou oi his chia fr Enable Channel Configuration Calibration Calibrate Channel 1 Sensor Type Mode Calibrate all Enabled Channels Measurement Range 2 Excitation Current Status Excitation Current off 9 Error Apply Configuration to all Enabled Channels Test Wire Figure 39 Configuration of Channel 1 Initial Screen Figure 40 shows the LED status after turning on the 500uA excitation current The current is flowing correctly but the error flag is still red The measurement range is set correctly to lt 100 C Note however that the chosen Mode is 4 Wire while the sensor is connected up as 3 Wire E EA ProDAQ 5821 Channel Configuration ES chi ch2 ch3 ch4 ch5 che ch7 chs cho om chit chi2 chas chi4 r Enable Channel Enabled v Configuration Calibration Calibrate Channel 1 Sensor Type Mode Calibrate all Enabled Channels Meas
106. uration of Channel 14 An online calibration of channel 14 was made and the channel configuration dialog closed In the main panel the sample rate was set to 1ksps with 1000 samples The test duration in this case is thus 1s It is of course possible to sample at different sample rates and varying numbers of samples The green single DA button was clicked and the 1000 measurement values shown in Figure 37 captured Copyright O 2013 Bustec Production Ltd Page 26 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM Le EZ ProDAQ 5821 Soft Front Pasel 192 163 158 154 i 21 voltage Waveform y Zeamnteeg Waveform Terorrssee Wircetorm 0 0 Figure 37 Channel 14 Temperature Waveform Clicking on the Statistics button shows that the mean value of this waveform is 0 066 C compared to the ideal value of 0 018 C for a 100 0070 resistor a typical error of 0 048 C The peak to peak range of the measured values is about 0 04 C O Measured Temperature Mean Value Channel 14 0 0664376 C Figure 38 Channel 14 Mean Measured Temperature 3 4 2 PT 100 operating at 0 C in 3 Wire Mode A 1000 0 005 1ppm resistor was connected to channel 1 via a 30m 24AWG multi core cable and connected in 3 wire mode the S wire was disconnected Using an 8 5digit DMM operating in 4 wire mode the resistance of the load was previously confirmed to be 100 007Q slightly outside the 5mQ specification q
107. urement Range Excitation Current Status Excitation Current Error Apply Configuration to all Enabled Channels Test Wire Figure 40 Configuration of Channel 1 Excitation Current On Changing the mode to 3 Wire eliminates the error as shown in Figure 41 Copyright 2013 Bustec Production Ltd Page 28 of 94 ProDAQ 5821 RTD Signal Conditioning Card User Manual 5821 XX UM r FS ProDAQ 5821 Channel Configuration 2 Chi on on on chs os oi chs cho om ou op h13 chat ch gt Enable Channel Enabled KS Configuration Calibration Calibrate Channel 1 Sensor Type PT 100 vj Calibrate all Enabled Channels Measurement Range lt 100 C Status Excitation Current Status Excitation Current 500uA k Error Apply Configuration to all Enabled Channels Test Wire Figure 41 Configuration of Channel 1 3 Wire Mode Selected After calibration a measurement was made with 1000 samples at 1ksps This is shown in Figure 42 The mean value given in Figure 43 is 0 12 C compared to the theoretical value of 0 018 C a difference of 0 138 C E 18 ProDAQ 5821 Soft Front Panel 192 168 168 154 I Idle Acti Voltage Waveform v gt ss met Resistance Waveform v FC 1 Temperature Waveform A Waveform Length l Temperature C A p N Figure 42 Measurement of Channel 1 PT100 sensor 3 Wire Mode Page 29 of 94 Copy
108. urn a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range OxBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h Page 59 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Copyright O 2013 Bustec Production Ltd Page 60 of 94
109. warmed up Page 25 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Card User Manual 3 4 1 PT 100 operating at 0 C A 1000 0 005 1ppm resistor was connected to channel 14 via a 30m 24AWG multi core cable and connected in 4 wire mode Using an 8 5digit DMM operating in 4 wire mode the resistance of the load was previously confirmed to be 100 007 slightly outside the 5mQ specification quoted by the manufacturer A resistance of 100 0070 equates to a temperature of 0 018 C for the PT 100 sensor Channel 14 was enabled and the sensor type set to PT 100 with 4 wire mode The current was set to 500A As the expected temperature was 0 018 C the temperature range was set to lt 100 C the maximum recommended operating temperature for this range in order to maximize the measurement accuracy Figure 36 shows the configuration of channel 14 Note how the Excitation Current Status LED is green indicating that current is on and flowing m SZ ProDAQ 5821 Channel Configuration Lo een chi ch2 ch 3 Ch4 chs ch6 ch7 chs Cha Ch 10 Ch ii Ch 12 Ch 13 Ch 14 Ch gt Enable Channel Enabled v Configuration Calibration Calibrate Channel 14 Sensor Type PT 100 Mode 4 Wire Calibrate all Enabled Channels Measurement Range lt 100 C Excitation Current Status Excitation Current S00uA a Error Apply Configuration to all Enabled Channels Test Wire Figure 36 Config
110. was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status codes and their values The VPP 4 3 document contains detailed descriptions of all VISA functions and the status codes returned by each of them BU3100 Warnings Errors These are warning or error codes returned by the common motherboard interface library which are used by the 5821 driver to access a ProDAQ motherboard Warnings returned by the library will be in the range 0x3FFC0800 to 0x3FFC0900 and errors in the range O0xBFFC0800 to OxBFFC0O900 They are defined in the include file bu3100 h BU5821 Warnings Errors Warning codes returned by the 5821 driver functions will be in the range 0x3FFCOBO0 to Ox3FFCOFFF and error codes in the range OxBFFCOBOO to OxBFFCOFFF They are defined in the include file bu5821 h Page 67 of 94 Copyright O 2013 Bustec Production Ltd 5821 XX UM ProDAQ 5821 RTD Signal Conditioning Ca
111. will be returned Possible values are bu5821_CHAN 1 1 Channel 1 bu5821 CHAN 2 2 Channel 2 bu5821 CHAN 15 15 Channel 15 bu5821 CHAN 16 16 Channel 16 mode Variable Type ViInt16 passed by reference This parameter returns the channel mode Possible values are 4 wire Cable 3 wire Cable 2 wire Cable Differential Voltage Single Ended Voltage Input is grounded Input is connected to Voltage Reference Input is connected to Excitation Current Reference bu5821 MODE IREF GND 9 Input is connected to Excitation Current Reference but I path is grounded can be used to measure the current without external load bu5821 MODE 4 WIRE bu5821 MODE 3 WIRE bu5821 MODE 2 WIRE bu5821 MODE DIFF VOLT bu5821 MODE SE VOLT bu5821 MODE GND bu5821 MODE VREF bu5821 MODE IREF 0 Jo DG W N H Return Value If the function was successful it will return a status of VI_SUCCESS otherwise it will return a warning or error code Passing the status code to the function bu5821 error message will return a string describing the warning or error A driver function can return three different types of warnings or errors The function bu5821 error message will handle all three types of warning error codes by passing them to the appropriate function if necessary bu3100_error message or viStatusDesc to return the correct warning error message VISA Warnings Errors See section 3 3 of the VPP 4 3 2 document for a complete list of VISA status

ProDAQ 5821 16-Ch. RTD Signal Conditioning Card

Contents

Download Pdf Manuals

Related Search

Related Contents