3B Series 4 Channel Backplane
3B03
Rev. 0
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Specifications subject to change without notice. No license is granted by implication
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Tel: 781.329.4700 www.analog.com
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FEATURES
Mix and Match 3B Series I/O Module Capability
Factory Mutual (FM) Approved
CE Certified
+1500 V peak Channel/Channel and Input/Output Isolation
-25oC to +85oC Temperature Range
LEDs indicate when power is applied
Replaceable AC Line Fuse in Protective Housing
Versatile Mounting Options
APPLICATIONS
Industrial Signal Conditioning
Industrial Signal Isolation
Industrial Signal Filtering
PRODUCT OVERVIEW
To address diverse applications, the 3B Subsystem Series
includes a family of backplanes which provide a complete signal
conditioning solution. The 3B03 is designed for 4 channels to
offer users the flexibility to match the size of a system to specific
applications. All backplanes are provided with #6-32 x 1-inch
screws and standoffs for mounting. Several mounting options
are available, including rack, surface and NEMA enclosure.
All 3B Series modules feature a universal pin out and can be
easily tailored to fit the user’s application. Each backplane can
accommodate any 3B Series module in a “Mix and Match”
arrangement.
Modules are “Hot Swappable”; power does not have to be
removed when inserting or removing any module on the
backplane.
All backplanes provide a four screw terminal for each individual
channel’s input field connections. These connections satisfy all
transducer inputs and provide transducer excitation when
necessary.
FUNCTIONAL BLOCK DIAGRAM
Figure 1 3B03 Functional Block Diagram
A cold junction temperature sensor is also supplied on each
channel to accommodate thermocouple input modules.
Each channel has two screw terminals for the output
connections for the 4-20 mA output signals. Two 26-pin system
connectors provide high level voltage I/O for all channels.
Figure 1 illustrates the 3B Series backplane functional block
diagram. In addition, complete specifications are shown in the
table below.
3B03
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GENERAL DESCRIPTION
The 3B03 Series backplane provides the user with four channels,
any of which may be used with any of the 3B series of modules
offered by ADI.
This backplane have been designed to operate in a wide
temperature range, from -25oC up to +85oC
The 3B03 Series backplane has been evaluated by both Factory
Mutual and also by CSA. The 3B03 has passed all agency testing
and is listed by both organizations. In addition the 3B03 series
back plane is also CE certified.
The 3B03 backplane has several mounting options:
o Surface Mount – stand alone or using Surface Mount
Kit, model AC1333
o 19-inch Rack Mount Kit model AC1330
.
Figure 2
3B03
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3B03 Specifications
(typical @ +25°C and ±15 V dc, and +24 V dc Power)
Description Model 3B03
Number of Channe ls 4
ISOLATION
Input-to-Output Continuous
Channel-to-Channel Continuous
1500 V rms, Maximum
1500 V rms, Maximum
MECHANICAL DIMENSIONS – with modules 7.8” x 5.2” x 4.373”
(198.12 mm x 132.08 mm x 111.07 mm)
Mounting Standoffs 4
COLD JUNCTION TEMPERATURE SENSORS
Number provided on backplane
Initial Accuracy @ +25oC
Accuracy +5oC to +45oC
4
+0.5oC
+0.5oC (+0.0125oC/oC)
SYSTEM I/O CONNECTOR
Number
Type
2, 26-pin
Amp 746290-6
POWER SUPPLY OPTIONS
Voltage; AC Power Supply
Voltage; DC Powe r Supply
Voltage; External Supplies
Fuse; AC Power Supply
115 VAC
+25 VAC
+15 VDC and +24 VDC
220 VAC @ 500 mA
POWER INDICATOR LED’s indicate +15 VDC and + 24 VDC Power Applied
Environmental
Temperature Range
Rated Performance -25°C to +85°C
Operating -25°C to +85°C
Storage -40°C to +85°C
Relative Humidity, 24 hours 0 to 95% @ +60°C noncondensing
3B03
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OUTLINE DIMENSIONS
Figure 3 Outline Dimensions
3B03
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NOTES
3B03
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NOTES
© 2005 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective companies.
D05409-0-2/05(0)
