The 7B21 is
a unity gain, isolated input module with an input/output range of ±10
V. 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 ±10 V 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. 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 AC1363),
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.
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Features
Accepts a Wide Range of Process Control and Factory Data Collection
Signals: mA, mV, RTDs and Thermocouples
Process Current Output Modules 4 - 20 mA & 0 - 20 mA
Powered mA Input Module Includes Isolated Power for a Remote Transmitter,
Sufficient to Drive a 4 mA to 20 mA Current Loop
Bipolar Voltage Input and Output Modules
"Hot Swappable" Mix and Match Ability Under Full Power Without Disrupting
Field Wiring
Operates From a Single +24 V DC Power Supply
Provides +1 V to +5 V, 0 V to +10 V and ±10 V Output Options
Factory Calibrated to ±0.1% Maximum Accuracy
Isolates up to 1500 V rms continuous CMV and 120 V rms Continuous
Field Wiring Protection
Fully Rated Over the -40°C to +85°C Industrial Temperature
Range
Packaged in a Compact 2.1-inch x 1.7-inch x 0.6-inch Durable Plastic
Package
CSA Approved for Use in Class I, Division 2, Groups A, B, C and D
Hazardous Locations CE Approval: All 7B
Modules and Backplanes Meet the European Union's EMC Directive
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Input Module
Features and Benefits
Isolated Signal Conditioners with choice of isolation levels.
Accepts wide variety of process control and factory data collection
sensor inputs: thermocouples, RTDs and two-wire current loop powered
transmitters.
Millivolt, Volt and Milliamp Inputs.
Non-isolated, Low Cost, RTD model.
"Hot Swappable" under power.
Low drift of ±0.001% span /°C over entire rated -40°C
to +85°C industrial temperature range.
High accuracy of ±0.1% maximum. Maximum nonlinearity of ±0.02%. Input protection of up to 120 V rms continuous.
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Output Module
Features and Benefits
Bipolar ±10 V Input and Output Modules.
Current Output Modules provide 4 mA to 20 mA or 0 to 20 mA output.
High-Level Voltage Inputs.
Output protection of continuous short to ground.
Reliable gold-plated pin and socket connections.
Reliable transformer isolation to 1500 V rms continuous. Low drift of ±0.001% span /°C over entire rated -40°C
to +85°C industrial temperature range.
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