Configure a load cell connected to multifunction DAQ

Similar Questions

• Load cell, compatibility linear actuator

  I am putting together a new test configuration that will operate a linear actuator, in charge of sampling. Data will be graphically represented on a graph of load vs displacement. I am new to Data Acquisition, so I just wanted to run my installation by a person who has a little more experience before you start spending money.

  Motor and controller are ZAGARELLA. The engine is a NEMA size 23, 60mm travel (model #NA23C60), the force of 175 lbs; controller is a phase 2, up to 2. 5A by the motor controller step-by-step phase (Model #T - MCA). Engine connects to the controller with a Minidin 8. Data cable to the controller is a controller's connector Minidin 6.

  Load cell is a cell of weighing Subminiature Honeywell Model 11 with a capacity of 100 lbs (range BR code). I also use a Honeywell model UV-10 online amplifier to convert the millivolt signal ±10Vdc signal.

  Input module is a NI 9219, 4 channels, with connector 6-pos or blocks.

  Output module is a NI 9265, 4 channels, with connector 10-pos or blocks.

  My question is, what is the best way to connect to the motor controller for input/output modules? Also, same question for the Load Cell/amplifier and the input module. My setup looks, as it will work. I'm off little blind here and would be greatly HERE can anyone shed any light. Thanks in advance.

  Jeremy robots

  Hi Jeremy,.

  I'm not too familiar with the ZAGARELLA products but you were seeking to use the modules OR to send commands to the controller or you were looking to them for use as drive for the engine? Whatever it is, these modules will not be able to do it either. A quick search on google shows that the motor controller communicates via serial and or one of the modules that you have listed has a connector series. If you plan put these modules in a cRIO, you could use a NI 987 x to communicate through series.

  If you thought using modules OR as a drive for the engine, it is not possible either. You say your Motors require 2. 5, but most NI 9265 will be able to output is 20 m.

  In regard to the load cell, it seems you're going to need power external amplifier, which make no incremental signal you're trying to read. 9219 read only of differential signals, then you probably want to consider using a NI 920 x or a 9221. To connect the signal of the amplifier to one of these modules, the signal wire should go to one of the channels I and the Earth to the Terminal COM.

• How can I convert a 3 mV/V to a load cell signal to something I can read using a field point AIO-600?

  I use an external powere supply 12V to supply voltage to the load cell, and I'm reading data using AIO-600. There is a separate module that can do this, but is it possible to do it with the current material?

  Russell,

  The lowest input for the AIO-600 range is 0 - 6V.  This means that you will have a resolution of 12 bits (11.3 effective) broadcast more than 6 volts.  I guess that your full scale signal max will be 36mV.  Without amplification, you will not have a very high quality signal.  It would be the best bet to amplify your output signal mV as close to the load as possible cell and then connect this signal amplified to your AIO-600.

  Best,

  Chris LS

• Load cell amplifier signals

  Hi all

  I am building an app to read a signal in a cell in charge of RS & amplifier using a USB6210 data acquisition card. I ' v tried SE & Diff connections, and I see a change in signal when I apply a load, but it is not quite what I expected (see attached screenshots of MAX).

  I am providing an external 5V to the amplifier, so no load can expect approximately 3V from the amp - it works OK. With a load applied, I expected to see a constant voltage drop, however I seem to have become unstable, with decrease in voltage.

  No idea why this is happening, any help would be appreciated.

  Thank you

  Martin

  Link to RS load cell & amp data sheet:

  http://docs-Europe.origin.Electrocomponents.com/WebDocs/0099/0900766b80099349.PDF

  It looks like a 100 Hz hum... setting ground and shielding and clean power for your amplifier?

  Everything changed power devices (power, converter,...) nearby (shure your PC ;-)?) Electronic ballasts modern economy energy light or dimmer?

• 9237 with deck full load cell: support cell_null_off_shuntcal.vi survey error 200077

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  Hello

  I'm trying to use the example
  load_cell_null_off_shuntcal.VI with a scale of full-bridge (Honeywell
  Model 31, not amplified). I'm using LabView 8.6, cDAQ-9172 and NI9237. The
  load cell is connected to the pins 2,3,6 and 7.

  Entries for the front side of the VI
  are: excitation10V internal; mV/V 2.1492 (calibration sheet); weight max 10
  lbs; resistance bridge 350 ohms (Honeywell specifications); 9237 shunt internal
  100 kohm resistance; map of shunt R4 (default setting). I chose
  "Do not offset null" and "shunt cal.

  This is the error I get:

  Error-200077 occurred at DAQmx
  Do a calibration Shunt (bridge) .vi:1 or the possible reasons:

  Measurements: Requested value is not
  support for this property value.

  Property:
  AI. Bridge.ShuntCal.GainAdjust

  You asked:-61.980405e3

  Valid values begin with: 500.0e - 3

  Valid values ending with: 1.500000

  If the "shunt cal.
  green button is not selected, there is no error. I understand that the Gain
  Change value should be approximately 1, whereas I get is much larger. The Subvi DAQmx PerformShuntCalibration
  .VI (bridge) contains a "Call library function node" which I did not
  find out how interrogate.

  Someone else has experience
  with this error? Do you have any advice on:

  1)
  How to 'see' the calculations being
  carried out inside the "call library function node"?

  2)
  What the correct shunt element
  a full-bridge load cell location is? (although changing this location only)
  does not eliminate the error, I can't find this info).

  3)
  What can I do wrong with
  my entries to cause this error?

  Thank you

  Claire.

  Hi Claire,

  You must physically connect the SC of arm of the bridge terminals (normally R3). The terminal is not provided for the connection of external resistors.

  See the example

  C:\Program NIUninstaller Instruments\LabVIEW 8.6\examples\DAQmx\Analog In\Measure Strain.llb\Cont Acq strain samples (with calibration) - OR 9237.vi

• load cell

  Hello

  I use NI 9219 with model Honeywell scale 11. The problem is that the voltage for 9219 is 2, 7V while the calibrated for the load cell voltage is 5V. When I connect the two device, I always get the release of Labview, but how can I calibrate the sensor?

  Load cells operate on a principle of millivolts per Volt.  You should not need to calibrate the load cell just because you use a different voltage.  You just need to use the value of mV/V provided with certificate of calibration of the load cell in the setup of the scale of the load cell chain.

• load cell 9237 + full-bridge: load cell_null_off_shuntcal.vi - error 200077

  I try to use load_cell_null_off_shuntcal.vi with load cell (Honeywell model 31, not amplified). I'm using LabView 8.6, cDAQ-9172 and NI9237. Entries: excitation10V internal; mV/V 2.1492 (calib. bin); weight 10 lbs max. resistance bridge 350 ohms (Honeywell specifications); 9237 internal shunt resistance 100 kohm; map of shunt R4 (default setting). Selected "offset null" and "shunt cal.

  Error-200077 occurred to Shunt calibration perform DAQmx
  . VI:1 (bridge) or the possible reasons:

  Measurements: Requested value is not a supported value for
  This property.

  Property: I. Bridge.ShuntCal.GainAdjust

  You asked:-61.980405e3

  Valid values begin with: 500.0e - 3

  Valid values ending with: 1.500000

  If "shunt cal' green button not selected, no error. Setting the gain should be about 1. Subvi DAQmx PerformShuntCalibration (bridge) .vi contains "Call library function node" which is locked (?).

  Any ideas?

  What is the location of item correct shunt for a full-bridge load cell? Change this location does not eliminate the error.

  Hello, YTC,.

  The problem is most likely in your external connections of the NI 9237 and the load cell.  As mentioned in NI 9237 Operating Instructions and specifications, page 9, SC + SC - pins must be connected to the terminals of the resistance specified in the .vi of Shunt calibration perform DAQmx (bridge) (in the case of a full bridge, it would be R3).

  Let me know if you still have problems with your calibration.

• With the help of external excitation of load cell 9219

  I want to use 9219 to assess the load cells.

  Internal excitement for 9219 is not sufficient for my application, this device can be used with an external excitation source?

  If Yes is it as simple as cross the bridge of load cell using the external voltage and the output of the bridge on the 9219?

  Power max would be approximately 20 mV.

  Then the 9237 is probably your best choice. For this voltage, you will need to use an external source.

• calibration of the load cell

  I have a new 5 lb load cell, I want to replace the old one with.  The former load cell had previously been calibrated to the program and was located in the drop down menu, as well as several other cells.  So far all I've done is went to edit items in the menu properties ring and add in the name of load cell - I did in all references to the program.  There are several references to the cell of support throughout the program, but most is a case of event "loadcell scale" that passes across the cell to the variable global-loadcell scale and a cell nationally for initialization.  I have attached a manual for the program I work with (the cell for initialization is not displayed).    I have never calibrated a scale before and do not know the appropriate measures, so any advice will be appreciated.  I have to do something to the MAX?

  as a side question what are and when do you use the stringsand values of the nodes property.

  Thank you

  Hello

  Here are two links about calibration with our software. It is usually done through MAX and step by step instructions can be found in the links.

  http://digital.NI.com/public.nsf/allkb/D22B70F72C3FB23286256F15005C2575?OpenDocument

  http://zone.NI.com/DevZone/CDA/tut/p/ID/4845

  As to when to use property nodes, they are used whenever you want to programmatically set some properties or attributes. For example, if you want to programmatically change the color of the text in a control that is based on what is displayed or channel indicator or resize the control or the indicator.

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  Check out these articles and check if that helps:

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  Original title: "home network".

  0 x 80070035 "[name of the PC] is not configured to establish a connection on Port"File and Printer sharing (SMB)"on this computer".

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  Version FDM - 9.3.1
  Target - HFM 9.3.1
  Environment - Windows Server 2003 32-bit.
  
  Integration settings - Enable cell loading set to text.
  
  
  
  We try load cell textual information in HFM using FDQM. We checked LoadB action that allows to load cell text information. But not able to understand where it's source for the text in the cell. He reads from the Recordset, but cannot find "MemoText" field in the FDM Tables, but all other fields are available.
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  Thanks in advance.

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