7B30-01-2

Isolated, Voltage or Current Input 7B30 FEATURES FUNCTIONAL BLOCK DIAGRAM 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 -40oC to +85oC industrial temperature range. All 7B Series modules are 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 pinout 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. Figure 1. 7B30 Functional Block Diagram 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 rackcompatible 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. 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. 7B30* Product Page Quick Links Last Content Update: 11/01/2016 Comparable Parts Design Resources View a parametric search of comparable parts • • • • Documentation Application Notes • AN-535: Digital Input/Output Subsystems Data Sheet • 7B30: Isolated, Voltage or Current Input Data Sheet User Guides • 7B Series User's Manual 7B30 Material Declaration PCN-PDN Information Quality And Reliability Symbols and Footprints Discussions View all 7B30 EngineerZone Discussions Sample and Buy Visit the product page to see pricing options Tools and Simulations • 7B Series I/O Subsystem Software Tools Technical Support Reference Materials Submit a technical question or find your regional support number Informational • Selecting the Right Signal Conditioning Series for Your Application * This page was dynamically generated by Analog Devices, Inc. and inserted into this data sheet. Note: Dynamic changes to the content on this page does not constitute a change to the revision number of the product data sheet. This content may be frequently modified. 7B30 GENERAL DESCRIPTION up to 120 V rms line voltage. A one-pole 3 Hz filter preconditions the input signal prior to amplification by a low drift input amplifier. Amplitude modulation is used to implement transformer isolation (1500 V rms input-t-output and power). Isolated front-end circuitry power is supplied by a DC/DC converter. The output section contains a two-pole output filter and subsequent buffer ensures that a low noise, low impedance ( 2 kΩ) +1 V to +5 V or 0 V to +10 V Accuracy2 Initial @ +25°C 3 ±0.01% Span (±0.1% Span, maximum) Nonlinearity ±0.02% Span, maximum Input Offset vs. Temperature ±0.5 µV/°C Zero Suppression vs. Temperature ±0.005% (Vz)4/°C Span vs. Temperature ±35 ppm/°C Output Offset vs. Temperature ±0.002% Span/°C Rev. 0 | Page 3 of 8 7B30 Input Bias Current ±1 nA Input Resistance Power ON 10 MΩ Power OFF 30 kΩ, minimum Output Noise 5 MHz Bandwidth 6 mV peak 10 Hz to 100 kHz Bandwidth 0.4 mV rms 0.1 Hz to 10 Hz Bandwidth 0.6 µV peak Bandwidth, -3 dB 3 Hz Output Rise Time, 10% to 90% Span 150 ms Common-Mode Voltage (CMV) Input-to-Output and Power 1500 V rms, continuous Common Mode Rejection (CMR) Input-to-Output and Power @ 50/60 Hz 160 dB Normal Mode Rejection @ 50/60 Hz 60 dB Input Protection 120 V rms, continuous±35 V dc, continuous Input Transient Protection ANSI/IEEE C376.90.1-1989IEEE-STD 472IEC 255-4, Class II Output Resistance