NI SC-2311 User manual

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SM
View
Instra

Signal
Conditioning
SC-2311 User Manual
Connectivity for 5B and SSR Modules
SC-2311 User Manual
February 2001 Edition
Part Number 322906A-01
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Support
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Copyright ©2001 National Instruments Corporation. All rights reserved.
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Important Information
Warranty
The SC-2311 shielded carrier, SSR Series modules, and 5B Series modules are warranted against defects in materials and workmanship for a
period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair
or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor.
The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects
in materials and workmanship, for a period of 90 days from date of shipment, as evidenced by receipts or other documentation. National
Instruments will, at its option, repair or replace software media that do not execute programming instructions if National Instruments receives
notice of such defects during the warranty period. National Instruments does not warrant that the operation of the software shall be
uninterrupted or error free.
A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the outside of the package before
any equipment will be accepted for warranty work. National Instruments will pay the shipping costs of returning to the owner parts which are
covered by warranty.
National Instruments believes that the information in this document is accurate. The document has been carefully reviewed for technical
accuracy. In the event that technical or typographical errors exist, National Instruments reserves the right to make changes to subsequent
editions of this document without prior notice to holders of this edition. The reader should consult National Instruments if errors are suspected.
In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.
EXCEPT AS SPECIFIED HEREIN,NATIONAL INSTRUMENTS MAKES NO WARRANTIES,EXPRESS OR IMPLIED,AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF
NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER.NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR
DAMAGES RESULTING FROM LOSS OF DATA,PROFITS,USE OF PRODUCTS,OR INCIDENTAL OR CONSEQUENTIAL DAMAGES,EVEN IF ADVISED OF THE POSSIBILITY
THEREOF. This limitation of the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including
negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments
shall not be liable for any delay in performance due to causes beyond its reasonable control. The warranty provided herein does not cover
damages, defects, malfunctions, or service failures caused by owner’s failure to follow the National Instruments installation, operation, or
maintenance instructions; owner’s modification of the product; owner’s abuse, misuse, or negligent acts; and power failure or surges, fire,
flood, accident, actions of third parties, or other events outside reasonable control.
Copyright
Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying,
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Product and company names mentioned herein are trademarks or trade names of their respective companies.
WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
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Conventions
The following conventions appear in this manual:
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash.
bold Bold text denotes items that you must select or click on in the software,
such as menu items and dialog box options. Bold text also denotes
parameter names.
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, and code excerpts.
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©National Instruments Corporation v SC-2311 User Manual
Contents
Chapter 1
Introduction
About the SC-2311, 5B Series Modules, and SSR Series Modules ..............................1-2
What You Need to Get Started ......................................................................................1-3
Unpacking......................................................................................................................1-4
Chapter 2
Configuring and Setting Up the SC-2311
Configuring the SC-2311...............................................................................................2-1
Setting SW5.....................................................................................................2-4
Setting SW4.....................................................................................................2-4
Setting SW3.....................................................................................................2-4
Setting SW2.....................................................................................................2-5
Safety Information .........................................................................................................2-5
Using the I/O Panelettes ................................................................................................2-7
I/O Panelette Labels ........................................................................................2-8
Mounting the SC-2311...................................................................................................2-9
Chapter 3
5B Series Modules
Overview........................................................................................................................3-1
5B30, 5B31, 5B40, 5B41 Voltage Input Module ..........................................................3-2
5B32 Process Current Input Module .............................................................................3-2
5B34 RTD Input—Isolated 2- or 3-Wire RTD Module ................................................3-2
5B35 RTD Input—Isolated 4-Wire RTD Module.........................................................3-3
5B36 Potentiometer Input Module ................................................................................3-3
5B37 Thermocouple Input Module with Cold-Junction Compensation........................3-3
5B38 Strain-Gauge Input Module..................................................................................3-4
5B42 Process Current Input Module with 20 VDC Loop .............................................3-4
5B45/46 Frequency Input Module .................................................................................3-4
5B47 Linearized Thermocouple Input Module with Cold-Junction Compensation......3-5
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Contents
SC-2311 User Manual vi ni.com
Chapter 4
SSR Series Modules
Overview ....................................................................................................................... 4-1
Input Modules................................................................................................................ 4-1
SSR-IAC-5, 120 VAC..................................................................................... 4-2
SSR-IAC-5A, 240 VAC.................................................................................. 4-2
SSR-IDC-5, 3–32 VDC................................................................................... 4-3
Output Modules ............................................................................................................. 4-3
SSR-OAC-5, 120 VAC ................................................................................... 4-4
SSR-OAC-5A, 240 VAC ................................................................................ 4-5
SSR-ODC-5, 3–60 DVC ................................................................................. 4-5
Appendix A
Specifications
Appendix B
5B Series Module Data Sheets
Appendix C
Power Requirements for the SC-2311 with 5B and SSR Series Modules
Appendix D
Technical Support Resources
Glossary
Index
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Contents
©National Instruments Corporation vii SC-2311 User Manual
Figures
Figure 2-1. SC-2311 Top Cover Removal ...............................................................2-2
Figure 2-2. SC-2311 Parts Locator Diagram ...........................................................2-3
Figure 2-3. NRSE, and RSE or DIFF Mode Circuits...............................................2-4
Figure 2-4. Installing an I/O Panelette .....................................................................2-8
Figure 2-5. Installing an I/O Panelette Label...........................................................2-9
Figure 2-6. Rack-Mount Option...............................................................................2-10
Figure 2-7. Stack-Mount Option ..............................................................................2-11
Figure 4-1. SSR-IAC AC Input Diagram.................................................................4-2
Figure 4-2. SSR-IDC DC Input Diagram.................................................................4-3
Figure 4-3. SSR-OAC AC Output Diagram ............................................................4-4
Figure 4-4. SSR-ODC DC Output Diagram ............................................................4-6
Tables
Table C-1. 5B Series Current Requirements ...........................................................C-1
Table C-2. SSR Series Current Requirements.........................................................C-2
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©National Instruments Corporation 1-1 SC-2311 User Manual
1
Introduction
This manual describes the electrical and mechanical aspects of the
SC-2311 shielded carrier, 5B Series modules, SSR Series modules, and
accessory terminal blocks. It also describes how to configure, connect, and
customize the SC-2311 for use with National Instruments E Series data
acquisition (DAQ) devices.
The SC-2311 shielded carrier interfaces with the following signal
conditioning modules:
•Analog signal conditioning
–5B30, 5B31, 5B40, 5B41 voltage input modules
–5B32 process-current input modules
–5B34 RTD input, isolated 2- or 3-wire RTD modules
–5B35 RTD input, isolated 4-wire RTD modules
–5B36 potentiometer input modules
–5B37 thermocouple input with cold-junction
compensation modules
–5B42 process-current input with regulated 20 VDC loop modules
–5B47 linearized thermocouple input with cold-junction
compensation modules
–5B38 strain-gauge input modules
–5B45/46 frequency input modules
•Digital signal conditioning
–SSR-IAC-5 input module (120 VAC)
–SSR-IAC-5A input module (240 VAC)
–SSR-IDC-5 input module (3 to 32 VDC)
–SSR-OAC-5 output module (120 VAC)
–SSR-OAC-5A output module (240 VAC)
–SSR-ODC-5 output module (3 to 60 VDC)
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Chapter 1 Introduction
SC-2311 User Manual 1-2 ni.com
About the SC-2311, 5B Series Modules,
and SSR Series Modules
This section describes the SC-2311 shielded carrier, 5B Series modules,
and SSR Series modules. It also lists what you need to get started, and
explains how to unpack your SC-2311 and signal conditioning modules.
The SC-2311 connects signals to E Series DAQ devices. The SC-2311 can
interface up to eight 5B Series modules and eight SSR Series modules
simultaneously. When used with the 5B Series modules, SSR Series
modules, and a shielded 68-pin E Series cable, the SC-2311 offers a clean,
easy-to-use solution to analog and digital signal conditioning that is both
portable and rugged. The SC-2311 also provides 50 terminal block
connections for non-isolated measurements. This feature allows you direct
access to the I/O signals from the E Series DAQ device.
The SC-2311 has internal terminal blocks for connecting to the 5B Series
modules as well as the SSR Series modules. The SC-2311 allows you to
optimize connectivity to the terminal blocks through the use of panelettes.
The SC-2311 shielded carrier has a portable enclosure, and is ideal for
laptop and desktop applications.
The 5B Series modules along with the SC-2311 provide a
high-performance, inexpensive means of analog signal conditioning. You
can insert the 5B Series modules into any of the eight available slots on the
carrier. The 5B Series modules, along with the SC-2311, provide analog
input measurements such as voltage, current, resistance, temperature,
strain, and frequency.
The SSR Series modules along with the SC-2311 provide an easy-to-use
means of digitally controlling or sensing voltages from field devices.
The SSR Series modules are high-performance, fully encapsulated devices
that you can insert into any of the eight available slots on the SC-2311.
The SC-2311 also has light emitting diodes (LEDs) that indicate the status
of each SSR Series module.
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Chapter 1 Introduction
©National Instruments Corporation 1-3 SC-2311 User Manual
What You Need to Get Started
To set up and use the SC-2311 you need the following items:
❑SC-2311 shielded carrier
❑Up to eight of the following 5B Series modules for analog signal
conditioning
–5B30/31
–5B32
–5B34
–5B35
–5B36
–5B37
–5B38
–5B40/41
–5B42
–5B45/46
–5B47
❑Up to eight of the following SSR Series modules for digital signal
conditioning
–SSR-IAC-5
–SSR-IAC-5A
–SSR-IDC-5
–SSR-OAC-5
–SSR-OAC-5A
–SSR-ODC-5
❑SC-2311 User Manual
❑External power supply (supplied)
❑68-pin E Series DAQ device, documentation, and 68-pin E Series
cable
❑Flathead screwdriver 0.1 in. (supplied)
❑Number 1 and 2 Phillips-head screwdrivers
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Chapter 1 Introduction
SC-2311 User Manual 1-4 ni.com
❑Wire-insulation strippers
❑NI-DAQ 6.9 or later (driver software)
❑One or more I/O panelettes and label sheet
Unpacking
Your SC-2311 shielded carrier is shipped in a cardboard box. The 5B
and SSR Series modules are shipped in antistatic packaging to prevent
electrostatic damage to the modules. Electrostatic discharge can damage
several components on these products. To avoid such damage when you
handle the products, take the following precautions:
•Ground yourself by using a grounding strap or by touching a grounded
object.
•Touch the antistatic package to a metal part of your computer chassis
before removing the modules from the packaging.
Caution Never touch the exposed pins of connectors.
•Remove the modules from the packaging and inspect the modules for
any sign of damage. Notify National Instruments if the modules appear
damaged in any way. Do not install a damaged module into your
system.
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©National Instruments Corporation 2-1 SC-2311 User Manual
2
Configuring and Setting Up
the SC-2311
This chapter explains how to configure the SC-2311, provides safety
information, and explains how to install I/O panelettes and mounting
accessories.
Configuring the SC-2311
The SC-2311 contains the following slide switches that are used to
configure the device:
•SW5
•SW4
•SW3
•SW2
You must configure these slide switches prior to operating the SC-2311. To
access the slide switches, remove the eight top cover screws and the top
cover as shown in Figure 2-1. See Figure 2-2 for switch locations.
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Chapter 2 Configuring and Setting Up the SC-2311
SC-2311 User Manual 2-2 ni.com
Figure 2-1. SC-2311 Top Cover Removal
1 Top Cover Screws 2TopCover 3 SC-2311
3
2
1
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Chapter 2 Configuring and Setting Up the SC-2311
©National Instruments Corporation 2-3 SC-2311 User Manual
Figure 2-2. SC-2311 Parts Locator Diagram
1SW5
2SW4
3SW3
4 5B Series Modules
5 SSR Series Modules
6SW2
7 Safety Ground
6321 4 5
7
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Chapter 2 Configuring and Setting Up the SC-2311
SC-2311 User Manual 2-4 ni.com
Setting SW5
Setting SW5 to the AIGND/AISENSE SHORT position allows the
E Series DAQ device to operate in nonreferenced single-ended (NRSE)
mode. Use this switch setting when you are using 5B Series modules to
take measurements. In this mode, AIGND connects the negative input to
the PGIA on the E Series DAQ device through the AISENSE pin as shown
in Figure 2-3.
Figure 2-3. NRSE, and RSE or DIFF Mode Circuits
When the E Series DAQ device operates in referenced single-ended (RSE)
or differential (DIFF) mode, set SW5 to NC. When SW5 is in the NC
position it breaks the connection between AISENSE and AIGND as shown
in Figure 2-3. Use this setting if you are not using 5B modules to take
measurements.
Setting SW4
Setting SW4 to the SPLY GND/AIGND SHORT position allows the
5B Series modules to function properly when using the external power
supply. This switch setting short circuits the external supply ground to the
AIGND of the E Series DAQ device. In most cases, SW4 should remain in
the SPLY GND/AIGND SHORT position.
Setting SW3
Setting SW3 to the EXT +5V (5B) position powers the 5B modules using
the external power supply. In this mode, it is necessary to connect the
external power supply to power the 5B Series modules. For the best
performance, set SW3 to the EXT +5V (5B) position and use the external
power supply.
SC-2311
ACH0
ACH15
AISENSE
AIGND
SW5
E Series DAQ Device in NRSE Mode
NI-PGIA
Gain Amplifier
Analog
Multiplexer
–
+
IN X +
(DIFF)
+5V
(NRSE)
ACH
X
5B
AIGND
IN X–
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Chapter 2 Configuring and Setting Up the SC-2311
©National Instruments Corporation 2-5 SC-2311 User Manual
Setting SW3 to the Board +5V (5B) position powers the 5B modules using
the E Series DAQ device +5 V supply. In this mode, you can power the
5B Series modules directly from the E Series DAQ device.
Note The maximum current that the DAQ device can deliver depends on which DAQ
device you have selected. When using the Board +5V (5B) setting, it is necessary to know
the current requirements of the 5B Series modules and the current available from the DAQ
device you are using. See Appendix C, Power Requirements for the SC-2311 with 5B and
SSR Series Modules, for more details.
Setting SW2
Setting SW2 to the EXT +5V (SSR) position powers the SSR modules
using the external power supply. In this mode, you must connect the
external power supply to power the SSR Series modules.
Setting SW2 to the Board +5V (SSR) position powers the SSR modules
using the E Series DAQ device +5 V supply. In this mode, you can power
the SSR Series modules directly from the E Series DAQ device.
Note The maximum current that the DAQ device can deliver depends on which DAQ
device you have selected. When using the Board +5V (SSR) setting, it is necessary to know
the current requirements of the SSR Series modules and the current available from the
DAQ device you are using.
Safety Information
Cautions Do not operate the device in an explosive atmosphere or where there may be
flammable gases or fumes.
Keep away from live circuits. Do not remove equipment covers or shields unless you are
trained to do so. If signal wires are connected to the device, hazardous voltages can exist
even when the equipment is turned off. To avoid a shock hazard, do not perform procedures
involving cover or shield removal unless you are qualified to do so and disconnect all field
power prior to removing covers or shields.
Equipment described in this document must be used in an Installation Category II1
environment per IEC 60664-1.
Do not operate damaged equipment. The safety protection features built into this device
1Category II refers to local-level power distribution, such as that provided by a standard wall outlet.
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Chapter 2 Configuring and Setting Up the SC-2311
SC-2311 User Manual 2-6 ni.com
can become impaired if the device becomes damaged in any way. If the device is damaged,
turn the device off and do not use it until service-trained personnel can check its safety.
If necessary, return the device to National Instruments for service and repair to ensure that
its safety is not compromised.
Do not operate this equipment in a manner that contradicts the information specified in this
document. Misuse of this equipment could result in a shock hazard.
Do not substitute parts or modify equipment. Because of the danger of introducing
additional hazards, do not install unauthorized parts or modify the device. Return the
device to National Instruments for service and repair to ensure that its safety features are
not compromised.
Yo u must insulate all of your signal connections to the highest voltage with which the
SC-2311 can come in contact.
When using the device with high common-mode voltages, you must insulate your signal
wires for the highest input voltage. National Instruments is not liable for any damages or
injuries resulting from inadequate signal wire insulation. Use only 26–14 AWG wire with
a minimum voltage rating of 300 V and a temperature value of 60 °C for measuring up
to 300 V.
When connecting or disconnecting signal lines to the SC-2311 screw terminals, make sure
the lines are powered off. Potential differences between the lines and the SC-2311 ground
can create a shock hazard while you connect the lines.
Connections, including power signals to ground and vice versa, that exceed any of the
maximum signal ratings on the SC-2311 device can create a shock or fire hazard, or can
damage any or all of the boards connected to the SC-2311, the host computer, and the
SC-2311 device. National Instruments is not liable for any damages or injuries resulting
from incorrect signal connections.
If hazardous voltages (≥30 Vrms and42.4V
peak or 60 VDC) are present, you must connect
a safety earth-ground wire to the safety-ground screw terminal, shown in Figure 2-2. This
complies with safety agency requirements and protects against electric shock when the
SC-2311 is not connected to an installed DAQ device. To connect the safety earth-ground
to the safety-ground screw terminal, run an earth-ground wire from the signal source to the
screw terminal. National Instruments is not liable for any damages or injuries resulting
from inadequate safety earth-ground connections.
Clean the SC-2311 and accessories by brushing off light dust with a soft nonmetallic brush.
Remove other contaminants with a stiff nonmetallic brush. The unit must be completely
dry and free from contaminants before returning it to service.
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Chapter 2 Configuring and Setting Up the SC-2311
©National Instruments Corporation 2-7 SC-2311 User Manual
Using the I/O Panelettes
Select configurable I/O panelettes appropriate for the I/O connectivity
needs of your application. The I/O panelettes have standard prewired I/O
connectors. You can install I/O panelettes on the front of the SC-2311
enclosure.
Youcaninstallupto18single-widthI/OpanelettesintheSC-2311
enclosure. You can mix all types of I/O panelettes to produce custom I/O
combinations.
Note The strain-relief and 9-pin D-subminiature I/O panelettes require two panelette
spaces. The dual 9-pin D-sub I/O panelette requires three panelette spaces.
Each thermocouple and BNC I/O panelette accommodates two connectors.
Use the strain-relief I/O panelettes to connect large numbers of wires
directly to your internal accessory. You can machine the blank
I/O panelettes to make custom I/O panelettes to suit your application.
Use the preconfigured I/O panelettes to quickly connect and disconnect
standard connectors.
Note For RF emission compliance, you cannot use BNC panelettes.
RefertoFigure2-4andusethefollowingstepstoinstallanyofthe
I/O panelettes:
1. Choose one of the I/O panelettes to install.
2. Place the lower edge of the I/O panelette in the groove at the bottom of
the enclosure opening.
3. Tilt the I/O panelette top back into the enclosure.
4. Secure the I/O panelette with either one, two, or three of the M2.5 ×6
panhead screws (depending on the type of I/O panelette) that are
included with the panelette.
5. Repeat steps 1 through 4 until you have installed all your non-blank
I/O panelettes.
6. Install a blank I/O panelette in any unused panelette opening.
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Chapter 2 Configuring and Setting Up the SC-2311
SC-2311 User Manual 2-8 ni.com
Figure 2-4. Installing an I/O Panelette
I/O Panelette Labels
Each SC-2311 ships with a sheet of labels for you to apply to your I/O
panelettes as shown in Figure 2-5. The label sheet has both preprinted and
blank labels. You can customize the blank labels to suit your application.
You can use two labels on single-width I/O panelettes and three or more
labels on wider panelettes.
Caution Do not use a panelette for signals that exceed the panelette rating.
1 Thermocouple I/O Panelette
2M2.5×6Screw
3 BNC I/O Panelette
4 Strain-Relief I/O Panelette
5 D-Sub I/O Panelette
6 Dual D-Sub I/O Panelette
7 Blank I/O Panelette
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2
3
5
6
NATIONAL
INSTRUMENTS
SC-2311
Signal Conditioning with Configurable Connectors
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