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INSTALLATION GUIDE
SCXI -1314T TEDS Bridge Sensor
™
Terminal Block
Conventions
»
This guide describes how to install and use the SCXI-1314T terminal block
with the SCXI-1520 module and hardware Transducer Electronic Data
Sheet (TEDS)-enabled bridge sensors (IEEE-P1451.4 Class 2).
The SCXI-1314T terminal block works with the SCXI-1520 universal
strain/bridge sensor module to conveniently connect hardware TEDS smart
sensors using RJ-50 10 position/10 conductor (10p10c) modular plugs.
There are 10 pins arranged in eight modular jacks. Each jack corresponds
to one of the eight channels available on the SCXI-1520. For a complete
description of the use and operation of the SCXI-1520 module, refer to the
SCXI-1520 User Manual.
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.
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.
When symbol is marked on a product, it denotes a warning advising you to
take precautions to avoid electrical shock.
When symbol is marked on a product, it denotes a component that may be
hot. Touching this component may result in bodily injury.
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Table of Contents
Related Manuals for National Instruments SCXI-1314T
Summary of Contents for National Instruments SCXI-1314T
- Page 1 SCXI -1314T TEDS Bridge Sensor ™ Terminal Block This guide describes how to install and use the SCXI-1314T terminal block with the SCXI-1520 module and hardware Transducer Electronic Data Sheet (TEDS)-enabled bridge sensors (IEEE-P1451.4 Class 2). The SCXI-1314T terminal block works with the SCXI-1520 universal strain/bridge sensor module to conveniently connect hardware TEDS smart sensors using RJ-50 10 position/10 conductor (10p10c) modular plugs.
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Page 2: What You Need To Get Started
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. What You Need to Get Started To install and use the SCXI-1314T terminal block, you need the following items: ❑ Hardware –... - Page 3 SCXI-1520 contains relays that switch the resistors in and out of the input circuit to provide shunt calibration. These resistors are placed in sockets on the SCXI-1314T terminal block so you can easily replace them with resistors suitable to the specific Wheatstone-bridge sensor in your application.
- Page 4 1 Top Cover Screws 3 RJ-50 Connector 2 Top Cover 4 Thumbscrew Figure 1. SCXI-1314T Parts Locator Diagram Use long-nose pliers to carefully remove the socketed 100 kΩ precision resistors. Note To avoid damaging the precision resistors, pull the leads directly, alternating the force back and forth rather than pulling the resistor itself.
- Page 5 Reinstall the top cover and tighten the top cover screws. Refer to the SCXI Quick Start Guide to finish installing the SCXI-1314T and configure it in Measurement & Automation Explorer (MAX), and to find instructions for taking measurements. © National Instruments Corporation...
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Page 6: Channel Signals
Pin 1 TEDS data Pin 10 T – TEDS ground Shunt calibration TEDS Sensor Bridge Configurations This section describes the quarter-, half-, and full-bridge TEDS sensor bridge configurations available for use with the SCXI-1314T. SCXI-1314T TEDS Bridge Sensor Terminal Block ni.com... - Page 7 The following symbols apply to the circuit diagram and equations: • and R are half-bridge completion resistors. • is the quarter-bridge completion resistor (dummy resistor) you provide externally to the SCXI-1314T. • is the active measuring element. © National Instruments Corporation SCXI-1314T TEDS Bridge Sensor Terminal Block...
- Page 8 T + is the TEDS data transmission line. • T – is the TEDS ground reference. For greatest calibration accuracy, use separate wires between the bridge and the Note SCA terminals as shown in Figure 3. SCXI-1314T TEDS Bridge Sensor Terminal Block ni.com...
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Page 9: Half-Bridge
The following symbols apply to the circuit diagram and equations: • and R are half-bridge completion resistors. • and R are the active measuring elements. • is the excitation voltage. © National Instruments Corporation SCXI-1314T TEDS Bridge Sensor Terminal Block... - Page 10 T + is the TEDS data transmission line. • T – is the TEDS ground reference. Note For greatest calibration accuracy, use separate wires between the bridge and the SCA terminals as shown in Figure 4. SCXI-1314T TEDS Bridge Sensor Terminal Block ni.com...
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Page 11: Full-Bridge
• is the measured voltage. • is the remote sense measured excitation voltage. • T + is the TEDS data transmission line. • T – is the TEDS ground reference. © National Instruments Corporation SCXI-1314T TEDS Bridge Sensor Terminal Block... -
Page 12: Connecting The Signals
Untwist and flatten the wires into the correct color order for your application. Maintain the twist in the wire as close as possible to the RJ-50 modular plug while allowing enough room to insert the wires into the plug. SCXI-1314T TEDS Bridge Sensor Terminal Block ni.com... - Page 13 Crimp the terminal using an RJ-50 terminal crimper as shown in Figure 8. 1 Shielded Twisted Wire Cable 3 RJ-50 Terminal Crimper 2 RJ-50 (10p10c) Modular Plug Figure 8. Crimping the RJ-50 (10p10c) Modular Plug © National Instruments Corporation SCXI-1314T TEDS Bridge Sensor Terminal Block...
- Page 14 RJ-50 (10p10c) modular plug with a grounding wire as shown in Figure 10. 1 Ground Shield 3 Cable Insulation 2 Grounding Wire 4 Cable Shielding Figure 10. Connect the Shielding to the RJ-50 (10p10c) Modular Plug SCXI-1314T TEDS Bridge Sensor Terminal Block ni.com...
- Page 15 SCXI-1314T. Improperly grounding the shielding causes signal noise. Note 10. Refer to the SCXI Quick Start Guide to power on the SCXI chassis and configure the system in software. © National Instruments Corporation SCXI-1314T TEDS Bridge Sensor Terminal Block...
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Page 16: Specifications
Lead size..........0.6 to 0.7 mm (0.023 to 0.026 in.) Lead length ........2.8 to 4.4 mm (0.110 to 0.175 in.) Lead spacing........12.7 mm (0.500 in.) RJ-50 receptacle mean number of insertions before failure ........500 SCXI-1314T TEDS Bridge Sensor Terminal Block ni.com... -
Page 17: Maximum Working Voltage
Humidity ..........10 to 90% RH, noncondensing Maximum altitude ........2,000 m Pollution Degree (indoor use only) ..2 Safety The SCXI-1314T terminal block meets the requirements of the following standards for safety and electrical equipment for measurement, control, and laboratory use: •... -
Page 18: Electromagnetic Compatibility
Refer to the Declaration of Conformity (DoC) for this product for any additional Note regulatory compliance information. To obtain the DoC for this product, visit , search by model number or product line, and click the ni.com/certification appropriate link in the Certification column. SCXI-1314T TEDS Bridge Sensor Terminal Block ni.com... - Page 19 National Instruments™, NI™, ni.com™, NI-DAQ™, and SCXI™ are trademarks of National Instruments *373746C-01* 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 software, the patents.txt file on your CD, or ni.com/patents.