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3B44 PDF даташит

Спецификация 3B44 изготовлена ​​​​«Analog Devices» и имеет функцию, называемую «(3B42 - 3B44) Isolated AC Sine Wave Input».

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Номер произв 3B44
Описание (3B42 - 3B44) Isolated AC Sine Wave Input
Производители Analog Devices
логотип Analog Devices логотип 

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Isolated AC Sine Wave Input
3B42 / 3B43 / 3B44
FEATURES
AC averaging technique used to rectify, amplify, and filter 50
Hz to 400 Hz sine-wave signals.
Accepts inputs of between 20 mV to 550 V rms to give an rms
output reading.
Module provides simultaneous precision voltage and
current outputs.
Module circuitry can withstand 130v rms at the input screw-
terminals.
All 3B42, 3B43, & 3B44 series modules are mix-and-match
and Hot Swappable.
APPLICATIONS
Industrial signal conditioning
Industrial signal isolation
Industrial signal filtering
FUNCTIONAL BLOCK DIAGRAM
Figure 1. 3B42, 3B43, & 3B44 Functional Block Diagram
Output modules accept 0 to +10V (or +10V) single-ended
signals and provide an isolated 4-20 mA (or 0-20 mA) process
signal. All modules feature a universal pin-out and may be
readily hot-swapped under full power and interchanged without
disrupting field wiring.
The Analog Devices 3B Series Signal Conditioning Subsystem is
PRODUCT OVERVIEW
The 3B Series of Signal Conditioning I/o Subsystems provide a
designed to easily
measurement and
handle signal conditioning
control applications. Some
problems in
typical uses are
inDataShee
low-cost, versatile method of transferring analog transduDcaertaSheet4U.cmomicrocomputer-based data acquisition systems, programmable
signals to a data acquisition, monitoring or control system
controllers, analog recorders, dedicated control systems, and any
without the inherent noise, non-linearity, drift and extraneous
other applications where monitoring of temperature, pressure,
voltages. The modules are designed to directly accept analog
flow and analog signals are required. Since each input module
signals from Thermocouples, RTD’s, AC and DC Strain Gages,
features two simultaneous outputs, the voltage output can be
Torque Transducers, Frequency Transducers, LVDTs, millivolt
used to provide an input to a microprocessor-based data
or process current signals. The modules amplify, isolate,
acquisition or control system while the current output can be
linearize and convert the transducer output signals to
used for analog transmission, operator interface, or an analog
standardized analog inputs for high-level analog I/O
backup system.
subsystems. The 3B Series Subsystem consists of a 10” relay
rack with universal mounting backplane and a family of plug-in
(up to 16 per rack) input and output signal conditioning
modules.
Each input module is a single-channel signal conditioner which
plugs into a socket on the backplane and accepts its signal from
the input screw terminals. All input modules provide input
protection, amplification and filtering of the input signal,
Eight and four channel backplanes are also available. Each
backplane incorporates screw terminals for sensor inputs and
current outputs and a 26-pin connector for high-level single-
ended voltage outputs to the user’s equipment.
accuracy of +0.1%, low drift of +1 uV/ oC (low-level input
modules), and feature two high-level analog outputs that are
compatible with most process instrumentation. The isolated
input modules also provide +1500 V peak isolation.
The input modules feature complete signal conditioning
circuitry optimized for specific sensors or analog signals and
provide two simultaneous high-level analog outputs: 0 to +10V
(or +10V) and 4-20 mA (or 0-20 mA).
The choice of a specific 3B module depends upon the type of
input signal. Input modules are available to accept millivolt, volt,
process current, thermocouple, RTD, AC and DC strain gage,
frequency and LVDT inputs. The voltage output of each module
is available from the system I/O connector while the current
output is available on the output screw terminals.
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
DataSheet4Uinf.rcinogemments 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.
DataSheet4 U .com
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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GENERAL DESCRIPTION
The 3B42, 3B43, and 3B44 are single-channel AC sine wave
signal conditioning modules which use an AC averaging
technique to rectify, amplify, and filter 50 Hz to 400 Hz sine-
wave signals ranging from 20 mV to 550 V rms to give an rms
output reading. Simultaneous precision voltage and current
outputs are provided including isolation (+1500 V peak input-
to-output and power). The 3B42 and 3B43 modules withstand
220 V rms, and Model 3B44 withstands 550 V rms at its input
terminals without damage, thereby shielding computer-side
circuitry from field-side over-voltage conditions. Each plug-in,
mix-and-match, hot-swappable module is easily field calibrated
via front-panel zero and span adjustments for both voltage and
current outputs.
3B Series Custom-Ranging Program – Externally-
.
3B42 / 3B43 / 3B44
programmable versions, Models 3B42-00, 3B43-00, and 3B44-
00, enable the user to configure a special input range by using
the optional plug-on AC1310 ranging card, which houses user-
supplied resistors to determine zero and span. To facilitate
selecting resistors, a Windows program, 3B-CUSTOM,
calculates resistor values based on the user-desired input/output
ranges.
Signal isolation by transformer coupling uses a proprietary
modulation technique for linear, stable and reliable
performance. The differential input circuit on the field side is
fully floating, eliminating the need for any input grounding. A
demodulator on the computer side of the signal transformer
recovers the original signal, which is then filtered and buffered
to provide a low-noise, low-impedance output signal.
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Figure 2
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3B42 / 3B43 / 3B44
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3B42, 3B43 and 3B44 Models Available
Model
3B42-00
Input Range
Externally Programmable2
3B42-01
0 mV to +50 mV rms
3B42-02
0 mV to +100 mV rms
3B42-Custom
*
Model
3B43-00
Input Range
Externally Programmable2
3B43-01
0 V to +10 V rms
3B43-Custom
*
Model
3B44-00
Input Range
Externally Programmable2
3B44-01
0 V to +150 V rms
3B44-02
0 V to +250 V rms
3B44-Custom
*
1 Output current range may be user programmed to 4 mA to 20 mA using jumper supplied.
2 Requires AC1310 ranging card.
* Custom Input/Output ranges are available. Refer to configuration guide.
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3B42, 3B43 and 3B44 Specifications
(typical @ +25°C and ±15 V dc, and +24 V dc Power)
Description
Model 3B42
Input Ranges
Standard Ranges, 50 Hz to 400 Hz
Refer to Model Table
Custom Ranges, 50 Hz to 400 Hz
20 mV rms to 1 V rms
Output Ranges
Voltage (RL > 2 k)
Current (RL + 0 to 850 )1
0 V to +10 V
4 mA to 20 mA or 0 mA to 20 mA
Accuracy2
Initial @ +25°C
±0.05% Span
Nonlinearity
±0.02% Span
Stability vs. Temperature
Voltage Output
Zero
±0.005% of Span/°C
Span
±0.005% of Reading/°C
Current Output3
Zero
±25 ppm of Span/°C
Span
±25 ppm of Reading/°C
Zero and Span Adjustment Range4
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±5% of Span
Rev. 0 | Page 3 of 8
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Output Ranges1
0 V to +10 V & 0 mA to 20 mA
0 V to +10 V & 0 mA to 20 mA
0 V to +10 V & 0 mA to 20 mA
*
Output Ranges1
0 V to +10 V & 0 mA to 20 mA
0 V to +10 V & 0 mA to 20 mA
*
Output Ranges1
0 V to +10 V & 0 mA to 20 mA
0 V to +10 V & 0 mA to 20 mA
0 V to +10 V & 0 mA to 20 mA
*
Model 3B43
Model 3B44
Refer to Model Table
1 V rms to 50 V rms
Refer to Model Table
50 V rms to 550 V rms
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