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Analog
Devices 3B Signal Conditioning Backplanes
General Description
To address diverse applications,
the 3B Subsystem Series includes a family of backplanes which
provide a complete signal conditioning solution. The three
backplane models, 3B01, 3B02 and 3B03 are designed for 16,
8 and 4 channels respectively, 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.
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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. 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 signal. 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.
Figure 1. Functional Block Diagram of Models 3B01, 3B02,
and 3B03 Backplanes
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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
Three Backplane Options: 4 -, 8 -, 16 - Channel
-25°C to +85°C Temperature Range
LEDs Indicate When Power is Applied
Replaceable AC Line Fuse in Protective Housing
Versatile Mounting Options
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Surface
Mount - stand alone or using Surface Mount
Kits; Models AC1331, AC1332, AC1333
19-inch Rack
Mount Kit - Model AC1330
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Order
Now Model 3B02 Backplane
 Order
Now Model 3B03 Backplane
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3B Series Backplane
Specifications
| Channels |
16 |
8 |
4 |
| Input-to-Output, Continuous |
1500 V rms, maximum |
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| Channel-to-Channel, Continuous |
1500 V rms, maximum |
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| Mechanical Dimensions-with
modules |
17.4" x 5.2" x 4.373"
(441.96
mm x
132.08 mm x 111.07 mm) |
11.0" x 5.2" x 4.373"
(279.4 mm
x
132.08 mm x 111.07 mm) |
7.8" x 5.2" x 4.373"
(198.12 mm
x
132.08 mm x 111.07 mm) |
| Mounting
Standoffs |
7 |
5 |
4 |
| Number provided on backplane |
16 |
8 |
4 |
| Initial Accuracy @ +25°C |
±0.5°C |
* |
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| Accuracy, +5°C to +45°C |
±0.5°C (±0.0125°C/°C) |
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| Number |
2, 26-pin |
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| Type |
Amp 746290-6 |
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| Voltage: AC Power
Supply1 |
115 V AC |
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| Voltage: DC Power
Supply2 |
+24 V DC |
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| Voltage: External
Supplies3 |
±15 V DC and +24 V DC |
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| Fuse: AC Power Supply |
220 V AC @ 500 mA |
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| Power Indicator |
LEDs indicate ±15 V DC
and +24
V DC Power Applied |
* |
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| Temperature Range |
| Rated
Performance |
-25°C to +85°C |
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| Operating |
-25°C to +85°C |
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| Storage |
-40°C to +85°C |
* |
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| Relative Humidity |
0 to 95%
@ +60°C
noncondensing |
* |
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* Specifications same as model
3B01.
1 Optional AC/DC Power Supplies, Models
AC1300, AC1301 and AC1307, are described in power
supply section.
2 Optional DC/DC Converter,
Model AC1302, is described in the power supply
section.
3 External power may be connected to
the P3 DC Power Connector. +24 V DC is only needed when
current output is used.
Specifications subject to
change without notice. |
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