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1. 3 RscaL nV V V Figure 2 Quarter Bridge Circuit Diagram Using a 3 Wire Strain Gauge The following symbols apply to the circuit diagram and equations eR and R are half bridge completion resistors e R is the quarter bridge completion resistor dummy resistor e Ry is the active measuring element e Recay is the shunt calibration resistor e Vgxis the excitation voltage e R is the lead resistance e Varis the measured voltage SCXI 1317 Terminal Block Installation Guide 4 ni com Connecting the Signals To connect the signal to the terminal block refer to Figures 3 and 4 while completing the following steps Back View Front View 1 Top Cover Screws 4 Connector 6 Strain Relief Screws 2 Top Cover 5 Strain Relief Bar 7 Safety Ground Lug 3 Thumbscrew Figure 3 SCXI 1317 Enclosure Parts Locator Diagram 1 Unscrew the top cover screws and remove the top cover 2 Loosen the strain relief screws and remove the strain relief bar 3 Prepare your signal wire by stripping the insulation no more than 7 mm 0 28 in 4 Run the signal wires through the strain relief opening If necessary add insulation or padding 5 Insert the stripped end of the signal wires fully into the terminal Make sure no bare wire extends past the screw terminal Exposed wire increases the risk of a short circuit that can cause circuit failure iy Note When connecting your signals to the SCXI 1317 fo
2. E INSTALLATION GUIDE SCXI 1317 Terminal Block This guide describes how to install and use the SCXI 1317 terminal block with the SCXI 1521 B quarter bridge strain gauge module Using the SCXI 1317 terminal block with the SCXI 1521 B module enables you to conveniently connect quarter bridge strain gauges For a complete description of the use and operation of the SCXI 1521 B module refer to the SCX 1521 B User Manual Conventions The following conventions are used in this manual The symbol leads you through nested menu items and dialog box options to a final action The sequence File Page Setup Options directs you to pull down the File menu select the Page Setup item and select Options from the last dialog box This icon denotes a note which alerts you to important information gt g This icon denotes a caution which advises you of precautions to take to avoid injury data loss or a system crash When this icon is marked on the product refer to the Read Me First Safety and Radio Frequency Interference document shipped with the product for precautions to take A When symbol is marked on a product it denotes a warning advising you to take precautions to avoid electrical shock AN When symbol is marked on a product it denotes a component that may be hot Touching this component may result in bodily injury bold Bold text denotes items that you must select or click in the software such as menu items and dia
3. ay Note Refer to the Read Me First Safety and Radio Frequency Interference document before removing equipment covers or connecting or disconnecting any signal wires This section provides information about making quarter bridge signal connections using either a 2 or 3 wire strain gauge Figures 1 and 2 show the circuit wiring diagrams If the transducer is shielded connect the shield to the GND connection on the SCXI 1317 terminal block 2 Wire Transducer SCXI 1317 SCXI 1521 B Figure 1 Quarter Bridge Circuit Diagram Using a 2 Wire Strain Gauge The following symbols apply to the circuit diagram and equations e R and R are half bridge completion resistors e R is the quarter bridge completion resistor dummy resistor e Ry is the active measuring element e Rgcaz is the shunt calibration resistor National Instruments Corporation 3 SCXI 1317 Terminal Block Installation Guide e Very is the excitation voltage e R is the lead resistance e V4 is the measured voltage 3 Wire Transducer SCXI 1317 SCXI 1521 B 3 Voy i i i EX i R 1 Ex pws cy Ri R4 gauge R i Vay i L Al i i i A Cy i R i i i f 1 QTR i i AAS eo r e a GND Q R3 QTR 3
4. bar and tighten the strain relief screws Reinstall the top cover and tighten the top cover screws 9 Attach the SCXI 1317 to the SCXI 1521 B using the thumbscrews 10 Refer to the SCXI Quick Start Guide to power on the SCXI chassis and configure the system in software Specifications All specifications are typical at 25 C unless otherwise specified Mechanical DUMEMSIONS 5 502 seicesreesseeressereteseeseeees 15 0 cm by 7 9 cm by 3 1 cm 5 9 in by 3 1 in by 1 2 in Maximum Working Voltage Maximum working voltage refers to the signal voltage plus the common mode voltage Channel to earth 00 eee eeeeeeeeees 42 Vims Installation Category I Channel to channel eeeeeseeseeseeeee 42 Vims Installation Category I nye Note Refer to the SCXI 1521 B User Manual for valid input specifications SCXI 1317 Terminal Block Installation Guide 6 ni com Environmental Operating temperature ee 0 to 50 C Storage temperature eee 20 to 70 C FAUNA IEY sec sessessg sed cbse snake doh Seance rii 10 to 90 RH noncondensing Maximum altitude cece 2 000 m Pollution Degree indoor use only 2 Safety The SCXI 1317 terminal block meets the requirements of the following standards for safety and electrical equipment for measurement control and laboratory use e TEC 61010 1 EN 61010 1 e UL61010 1 e CAN CSA C22 2 No 61010 1 3 Note For UL and other safety certifications refer to the pr
5. llow the labeling on the SCXI 1317 as shown in Figure 4 You can connect the shield of a shielded cable to GND National Instruments Corporation 5 SCXI 1317 Terminal Block Installation Guide ca fe Oo of o d lon io 0000000000000000000000000000000 u oooooo0o000000000000000000000000002 DIO O O O O Q ojr s ooooooo0o0000000000000000000000000 J2 z 4 55 56 a ae a9 Orx OEX OEX OEXH EX Eeg xo Ser EX0 o 2 a o 2 5 OorR 5 OQTR S oor Fa Oot OTR TlorRO EPTRO TPIRO IETRO OAI OAI OAI OAI ar Ofar fe Ohr fo Olar Ofar x OGND OND OGNDJ oOcnp GND ENDQ ENDO GNDQ GNDO 3 5 EX orx omx om OEXH 2 2 Ex O o Exo 2 EXO R EVO Corr OORT OTT oom OTR Tjorro EPTRO E OTRO Soro a 6 6 S ar S ro 6 O Oar OAI oar OAI AI O BIO ALO ALO Ocnp OGND OeND o enp GND eNDQ ENDO GNDO GNDO OEX OEX OEXH OEXH EX Ex O Ex O EX O EXO g rey Q z g g Corr OQTRI 6 OQTI fal OQTI OTR FjorTRO IPO OTRO SE OTRO Oar gar mar oar Oj ar Olar fe Ohr i Olar fe yar fe SCXI 1317 0000 O O QUARTER BRIDGE STRAIN 8 O lus C 0000 Go OG B F Figure 4 SCXI 1317 Circuit Parts Location Diagram 6 Tighten the terminal screws to a torque of 0 57 to 0 79 N m 5 to 7 Ib in 7 Reinstall the strain relief
6. log box options Bold text also denotes parameter names Q7 NATIONAL p INSTRUMENTS italic Italic text denotes variables emphasis a cross reference or an introduction to a key concept This font also denotes text that is a placeholder for a word or value that you must supply monospace Text in this font denotes text or characters that you should enter from the keyboard sections of code programming examples and syntax examples This font is also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions operations variables filenames and extensions SCXI 1521 B SCXI 1521 B refers to either the SCXI 1521 or SCXI 1521B module What You Need to Get Started To install and use the SCXI 1317 terminal block you need the following items 0 Hardware SCXI 1317 terminal block SCXI 1521 B module SCXI or PXI SCXI combination chassis Cabling cable adapter and quarter bridge strain gauges as required for your application 0 Documentation Read Me First Safety and Radio Frequency Interference SCXI Quick Start Guide SCXI 1317 Terminal Block Installation Guide SCXI 1521 B User Manual SCXI or PXI SCXI combination chassis user manual U Tools Number 2 Phillips screwdriver Long nose pliers Wire cutter SCXI 1317 Terminal Block Installation Guide 2 ni com Quarter Bridge 2 and 3 Wire Strain Gauge Circuits
7. oduct label or visit ni com certification search by model number or product line and click the appropriate link in the Certification column Electromagnetic Compatibility Emissions ccccccccccccccccececeseeeeseseeesssseees EN 55011 Class A at 10 m FCC Part 15A above 1 GHz IMMUN ennnen EN 61326 1 1997 A2 2001 Table 1 EMC EM I ni CE C Tick and FCC Part 15 Class A Compliant 3 Note For EMC compliance operate this device with shielded cabling National Instruments Corporation 7 SCXI 1317 Terminal Block Installation Guide CE Compliance The SCXI 1317 terminal block meets the essential requirements of applicable European Directives as amended for CE marking as follows Low Voltage Directive safety 73 23 EEC Electromagnetic Compatibility Directive EMC 0 ee eee eeeeeeeeeees 89 336 EEC B Note Refer to the Declaration of Conformity DoC for this product for any additional regulatory compliance information To obtain the DoC for this product visit ni com certification search by model number or product line and click the appropriate link in the Certification column National Instruments NI ni com and SCXI 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 Patents in your softwa
8. re the patents txt file on your CD orni com patents 373794B 01 Julod 2004 National Instruments Corp All rights reserved

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