National Instruments Isolated Analog Input Modules SCC-AI01 User Manual - Installing The Module

Manual is about: SCC-AI Series Isolated Analog Input Modules

Summary of Isolated Analog Input Modules SCC-AI01

  • Page 1

    User guide scc-ai series isolated analog input modules the scc-ai series isolated analog input modules (scc-ai xx ) can extract a relatively low-amplitude input signal from a high-common-mode voltage so the e series daq device can measure the input signal. They also can amplify and filter the input ...

  • Page 2: Conventions

    Scc-ai series isolated analog input modules 2 ni.Com conventions the following conventions are used in this guide: angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name—for example, ai. This icon denotes a note, which alerts you...

  • Page 3: Unpacking The Module

    © national instruments corporation 3 scc-ai series isolated analog input modules ❑ one or more scc-sg xx ❑ scc-sg series strain-gauge modules user guide ❑ sc-2345 user manual ❑ read me first: safety and radio-frequency interference ❑ sc-2345 quick reference label ❑ 68-pin basic or e series daq devic...

  • Page 4: Installing The Module

    Scc-ai series isolated analog input modules 4 ni.Com installing the module caution refer to the read me first: safety and radio-frequency interference document before removing equipment covers or connecting/disconnecting any signal wires a blue label stripe identifies the scc-ai xx as an analog inpu...

  • Page 5: Connecting The Input Signals

    © national instruments corporation 5 scc-ai series isolated analog input modules connecting the input signals the scc-ai xx has a fixed screw-terminal receptacle and a removable screw-terminal block, as shown in figure 1-2. Figure 1-2. Scc-ai xx two-part screw-terminal system after you install the s...

  • Page 6

    Scc-ai series isolated analog input modules 6 ni.Com figure 1-3. Scc-ai xx signal connections the inputs are designed in a floating (nonreferenced) single-ended configuration. If the measured signals are floating, connect the negative input pins, 1 and 3, to aisense on the sc-2345 terminal block thr...

  • Page 7: Configuring The Scc System

    © national instruments corporation 7 scc-ai series isolated analog input modules if a high common-mode voltage is present, connect the negative input pins, 1 and 3, to the signal reference. Figure 1-5 shows a ground-referenced signal connection on one channel of the scc-ai xx . Figure 1-5. Ground-re...

  • Page 8

    Scc-ai series isolated analog input modules 8 ni.Com 4. In the scc connector block configuration window, configure the scc system as follows: a. Specify the scc carrier type . The location of the scc sockets change depending on the scc carrier type. B. Select the daq device that is connected to the ...

  • Page 9

    © national instruments corporation 9 scc-ai series isolated analog input modules 10. If you make a selection mistake, select the socket and click remove . 11. Repeat steps 8 and 9 for each newly installed scc. 12. Click ok after completing all scc entries. 13. Click ok to complete the configuration ...

  • Page 10

    Scc-ai series isolated analog input modules 10 ni.Com table 1-2 shows suggested values for some of the parameters. Use default values for parameters not shown. 9. Click test to test the channel. You should be able to view your measurement in the window that appears. You have finished configuring the...

  • Page 11: Specifications

    © national instruments corporation 11 scc-ai series isolated analog input modules scaling voltage measurements if you configured the scc-ai xx using max and you are using ni-daq, the voltage reading you get from the e series daq device accounts for the voltage scaling effect of the scc-ai xx . Other...

  • Page 12

    Scc-ai series isolated analog input modules 12 ni.Com filter characteristics number of poles .....................................3 rolloff.....................................................60 db/decade cutoff frequency (–3 db) ai0 x ................................................10 khz ai1 x ......

  • Page 13

    © national instruments corporation 13 scc-ai series isolated analog input modules environmental operating temperature............................ 0 to 50 ° c storage temperature ............................... –20 to 70 ° c humidity ................................................ 10 to 90% rh, nonc...

  • Page 14

    Scc-ai series isolated analog input modules 14 ni.Com calibrating gain and offset errors the scc-ai xx is calibrated at the factory before shipment. If you want to adjust the gain of the scc-ai xx in your system using your e series daq device, you need a voltage source that is several times more acc...

  • Page 15

    © national instruments corporation 15 scc-ai series isolated analog input modules 9. Adjust the trimpot labeled gain located on the top of the scc-ai xx . If the value you obtained in step 8 is less than the input voltage, turn the trimpot clockwise to increase the gain. If it is greater than the in...

  • Page 16: Scc-Ai

    Scc-ai series isolated analog input modules 16 ni.Com scc-ai xx module pin assignments figure 1-6 shows the i/o connector pins on the bottom of the module. Figure 1-6. Scc module bottom view table 1-4 lists the signal corresponding to each i/o connector pin on the bottom of the scc-ai xx . Ach( x ) ...

  • Page 17

    © national instruments corporation 17 scc-ai series isolated analog input modules 9 + 6 v 10 gnd 11 agnd 12 ref5v 13 + 15 v 14 –15 v 15 — 16 — 17 — 18 — 19 — 20 — table 1-4. Scc-ai xx module pin assignments (continued) pin number signal.

  • Page 18

    National instruments™, ni™, ni.Com™, and ni-daq ™ are trademarks of national instruments corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering national instruments products, refer to the appropriate location: help»pa...