7b30-08-2 Analog Devices, Inc., 7b30-08-2 Datasheet

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7b30-08-2

Manufacturer Part Number
7b30-08-2
Description
Isolated, Voltage Or Current Input
Manufacturer
Analog Devices, Inc.
Datasheet
FEATURES
Interfaces, amplifies and filters unipolar and bipolar millivolt
and voltage inputs.
Provides a protected precision output of either +1 V to +5 V
or 0 V to +10 V.
A plug-in 250W current sensing resistor is provided to
measure a process current input.
All 7B30 series modules are mix-and-match and Hot
Swappable.
APPLICATIONS
Industrial signal conditioning
Industrial signal isolation
Industrial signal filtering
PRODUCT OVERVIEW
The 7B Series of signal conditioners feature small size, low cost
and a wide output voltage range for a variety of applications
including process control and factory-floor environments. The
single-channel 7B modules accept inputs from a range of
transducers and are fully rated over the extended -40
+85
rated for a nominal power supply input of +24 VDC; and, for
maximum flexibility, they will accept supply voltages in the +14
VDC to +35 VDC range. The input modules, with the exception
of the 7B21, provide a high-level output voltage that is factory
configured for either the +1 V to +5 V or 0 V to +10 V range.
The 7B21 is a unity gain, isolated input module with an
input/output range of +10V. Output modules are available that
provide either isolated process current or isolated bipolar
voltage output. Model 7B39 converts either a +1 V to +5 V input
to a 4 to 20 mA output or a 0 V to +10 V input to a 0-20 mA
output. The input/output ranges of the 7B39 are factory
configured. The 7B22 is a unity gain module that provides an
isolated +10V output signal. All modules have a universal pin-
out and may be readily hot-swapped under full power without
disrupting field wiring. Each module accepts analog transducer
signals and transfers them to a process control or factory data
collection system without the inherent noise, non-linearity, drift
and extraneous voltages which frequently accompany the
signals.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
o
C industrial temperature range. All 7B Series modules are
o
C to
Isolated, Voltage or Current Input
The modules feature a maximum nonlinearity of +0.02% and
are factory calibrated to guarantee a maximum accuracy
specification of +0.1%.
The 7B Series offers up to 1500 V rms continuous common
mode voltage isolation and 120 V rms of field wiring input
protection. The power supplies necessary to drive each of the
individual module’s input circuitry are internally isolated,
enabling the 7B Series modules to offer true channel-to-channel
isolation of the input signals.
The modules directly accept analog signals from
thermocouples, RTDs, current loop powered transmitters, and
other process control signals. The 7B Series modules amplify,
linearize, isolate, protect and convert the transducer output
signals to standardized analog inputs for high-level analog I/O
subsystems. The 7B Series Subsystem consists of 19-inch rack-
compatible hardware (model AC 1363), with universal
mounting backplane and a family of plug-in (up to 16 per
backplane) input and output signal conditioning modules. Four-
, eight-, and sixteen-channel backplanes are available. Each
backplane incorporates screw terminals for easy power
connections and field wiring, and includes a 25-pin D-type
connector for interfacing the high-level single-ended voltage
outputs to the user’s equipment. Gold-plated sockets are
provided on each channel of the backplane to ensure the
reliability of each module’s electrical connection.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
FUNCTIONAL BLOCK DIAGRAM
Figure 1. 7B30 Functional Block Diagram
© 2004 Analog Devices, Inc. All rights reserved.
www.analog.com
7B30

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7b30-08-2 Summary of contents

Page 1

... Provides a protected precision output of either + + plug-in 250W current sensing resistor is provided to measure a process current input. All 7B30 series modules are mix-and-match and Hot Swappable. APPLICATIONS Industrial signal conditioning Industrial signal isolation Industrial signal filtering ...

Page 2

... Hz and a normal mode rejection (NMR 50/60 Hz are provided. Rated to operate with a nominal +24 VDC supply, Model 7B30 is nix- and-match and hot-swappable with other 7B Series input modules can be inserted or removed from any socket in the same backplane without disturbing system power ...

Page 3

... 7B30-08 Models 7B30-05-1 and 7B30-05-2 may be used to measure a process current input by installing a 250 this resistor installed, the current loop is maintained even when the module is removed from the backplane. ...

Page 4

... Warm-up time required to meet specifications is approximately 10 minutes. * Contact factory for OEM requirements. 1 Model 7B30 may be used to measure a process current input by installing a 250 loop is maintained even when the 7B30 module is removed form the backplane. 2 Includes the combined effects of repeatability, hysteresis, and nonlinearity. ...

Page 5

... PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS Figure 3 7B30 Input Field Connections Table 1. Pin Function Descriptions— Pin Input Module Function Output Module Function No. 0 SENSOR INPUT NOT USED 1 INPUT HIGH OUTPUT HIGH 2 INPUT LOW OUTPUT LOW 3 POWER SUPPLY (DC) POWER SUPPLY (DC) 4 OUTPUT VOLTAGE ...

Page 6

... OUTLINE DIMENSIONS Figure 5. Outline Dimensions Rev Page 7B30 ...

Page 7

... NOTES Rev Page 7B30 ...

Page 8

... NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective companies. D05172-0-10/04(0) Rev Page 7B30 ...

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