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Single-Channel Signal Conditioning Module

5B32

FEATURES

Isolated Current Input.

Amplifies, Protects, Filters, and Isolates Analog Input.

Measure process-current input signal of 4-20 mA or 0-20 mA

by reading the voltage across an external precision 20Ω

resistor (supplied).

Generates an output of 0 to +5V.

Extra Current Conversion resistors are available.

Module circuitry can withstand 240v rms at the input screw-

terminals.

All 5B32 series modules are mix-and-match and Hot

Swappable.

FUNCTIONAL BLOCK DIAGRAM

Figure 1. 5B32 Functional Block Diagram

APPLICATIONS

Industrial signal conditioning

Industrial signal isolation

Industrial signal filtering

There are also a number of backplanes and mounting sockets

which provide a complete signal conditioning solution for end

users. Each backplane incorporates screw terminals for field

wiring inputs and outputs and cold junction sensors for

thermocouple applications.

These signal conditioners are designed to provide an easy and

convenient solution to signal conditioning problems of both

designers and end users in measurement and control

applications. Typical uses include microcomputer-based

measurement systems, standard data acquisition systems,

programmable controllers, analog recorders and dedicated

control systems. The 5 B series modules are ideally suited to

applications where monitoring and control of temperature,

pressure, flow, rotation and other analog signals are required.

The 5B Series modules and backplanes are approved by Factory

Mutual (FM) and the 5B Series modules are approved by the

Canadian Standards Association (CSA) for use in Class 1,

Division 2, Groups A, B, C, and D locations. These approvals

certify that the 5B Series is suitable for use in locations where a

hazardous concentration of flammable gas may exist only under

fault conditions of operation. Equipment of this category is

called “nonincendive” and they need no special enclosures or

other physical safeguards.

The 5B series modules and backplanes have been tested and

passed the stringent heavy industrial requirements of the

European Union’s electromagnetic compatibility (ENC)

directive – EN50082-1 and EN50081-2. When used according

to installation directions (refer to 5B series User Manual), any

errors caused by EMI/RFI interference will be less than 0.1% of

the full scale 5B measurement range for field strengths up to 10

V/M and frequencies up to 1 GHz.

PRODUCT OVERVIEW

The 5B Series represents an innovative generation of low cost,

high performance plug-in signal conditioners. Designed for

industrial applications, these modules incorporate highly

reliable transformer-based isolation and automated surface-

mount manufacturing technology. They are compact,

economical components whose performance exceeds that

available from more expensive devices. Combining 1500 V rms

continuous isolation, +0.05% calibrated accuracy, small size and

low cost, the 5B Series is an attractive alternative to expensive

signal conditioners and in-house designs

All modules are potted and identical in pin-out and size (2.27” x

2.32” x 0.595”). They can be mixed and matched, permitting

users to address their exact needs, and may be “hot swapped

without disturbing field wiring or power. The isolated input

modules provide 0 to +5V or +5V outputs and accept J, K, T, E,

R, S, N, or B type thermocouples.

These modules feature complete signal conditioning functions

including 240 V rms input protection, filtering, chopper

stabilized low drift +1 uV/oC amplification, 1500 V rms

isolation, and sensor excitation when required.

All modules feature excellent common mode rejection and

meet industrial transient surge withstand specifications.

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

5B32* PRODUCT PAGE QUICK LINKS

Last Content Update: 02/23/2017

COMPARABLE PARTS

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REFERENCE MATERIALS

Informational

•

IOS Products Warranty

•

Selecting the Right Signal Conditioning Series for Your

Application

DOCUMENTATION

Application Notes

•

AN-528: Design Considerations for Designing a 5B Series

System

•

AN-529: 5B Series Signal Conditioning Subsystems in RFI/

EMI Fields

•

AN-530: Narrow or Wide Bandwidth 5B Series Input

Modules: Which is the Right Choice?

•

AN-533: Applying 5B Series Backplanes and Mounting

Cards

•

AN-535: Digital Input/Output Subsystems

Data Sheet

•

5B32: Single-Channel Signal Conditioning Module Data

Sheet

User Guides

•

5B Series Manual

DESIGN RESOURCES

•

5B32 Material Declaration

•

PCN-PDN Information

•

Quality And Reliability

•

Symbols and Footprints

DISCUSSIONS

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SAMPLE AND BUY

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TECHNICAL SUPPORT

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number.

TOOLS AND SIMULATIONS

•

5B I/O Subsystem Software Tools

DOCUMENT FEEDBACK

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5B32

GENERAL DESCRIPTION

The 5B32 is a single-channel signal conditioning module that

amplifies, protects, filters and isolates its analog input. The

module measures a process current input signal of 4-20 mA or

0-20 mA by reading the voltage across an external precision

20W resistor (supplied) and generating an output of 0 to +5 V.

Extra current conversion resistor are available as accessories

(See Model AC1362 in the Accessories section).

Note that the 5B32 module circuitry can withstand 240 V rms at

the input screw-terminals, thereby shielding computer-side

circuitry from field-side overvoltage conditions. In addition, all

5B32 Series modules are mix-and-match and hot swappable, so

can be inserted or removed from any socket in the same

backplane without powering down the system.

A chopper-stabilized input amplifier provides low drift and

stable gain. At the amplifier input, a stable, laser-trimmed zero-

scale input offset is subtracted from the input signal to set the

zero-scale value for the 4-20 mA range. For user convenience,

the zero can be optionally factory-set to meet custom needs,

This allows suppression of a zero-scale input value many times

larger than the total span for precise expanded-scale

measurements.

Internal multi-pole lowpass filtering with a four-Hz cutoff (-

3dB) enhances normal-mode (noise on signal) and common-

mode (noise on signal return) rejection at 50/60 Hz, enabling

accurate measurement of small signals in high electrical noise.

A series output switch eliminates the need for external

multiplexing in many applications. The switch is turned on by

an active-low enable input. If the switch is to be on at all times,

the enable-input should be grounded to power common as it is

on the 5B01 and 5B08 backplanes..

Figure 2

Rev. 0 | Page 2 of 8

5B32

5B32—SPECIFICATIONS

5B32 Specifications

Description

Model 5B32

Input Ranges

Standard Ranges

Custom Ranges

Output Ranges (R

> 50 kΩ)

0 mA to 20 mA or 4 mA to 20 mA

0 mA to 20 mA (refer to ordering section)

-5 V to +5 V or 0 V to +5 V

Accuracy

Initial @ +25°C

Nonlinearity

Input Offset vs. Temperature

Output Offset vs. Temperature

Gain vs. Temperature

±0.05% Span ±0.05% Iz

±0.02% Span

±0.0025 of Iz/°C

±20 µV/°C

±0.0025% of Reading/°C

Input Resistor

Value

Accuracy

Stability vs. Temperature

20.0

Ω

±0.1%

±0.001%/°C

Noise

Input, 0.1 Hz to 10 Hz Bandwidth

Output, 100 kHz Bandwidth

Bandwidth, -3 dB

Output Rise Time, 10% to 90% Span

10 nA rms

200 µV rms

4 Hz

200 ms

Common-Mode Voltage (CMV)

Input-to-Output, Continuous

Output-to-Power, Continuous

Transient

1500 V rms maximum

±3 V maximum

ANSI/IEEE C37.90.1-1989

Common Mode Rejection (CMR)

1 kΩ Source Imbalance, 50/60 Hz

Normal Mode Rejection 50/60 Hz

160 dB

60 dB

Input Protection

Continuous

Transient

Output Resistance

Voltage Output Protection

Output Selection Time

240 V rms maximum

ANSI/IEEE C37.90.1-1989

Ω

Continuous Short to Ground

6 µs @ C

load

= 0 to 2,000 pF

Output Enable Control

Max Logic "0"

+1 V

Rev. 0 | Page 3 of 8

5B32

Min Logic "1"

Max Logic "1"

Input Current "0"

Power Supply Voltage

Power Supply Current

Power Supply Sensitivity, RTI

Mechanical Dimensions

+2.5 V

+36 V

0.4 mA

+5 V ±5%

30 mA

±2 µV/Vs%

2.275" x 2.375" x 0.595"

(57.8 mm x 59.1 mm x 15.1 mm)

Environmental

Temperature Range

Rated Performance

Operating

Storage

Relative Humidity

RFI Susceptibility

-25°C to +85°C

-40°C to +85°C

0 to 93% @ +40°C noncondensing

±0.5% Span error @ 400 MHz, 5 Watt, 3 ft

1 I

is the nominal input current that results in a 0 V output.

2 Includes the combined effects of repeatability, hysteresis, and nonlinearity and assumes RL > 50 kΩ. Does not include current-to-voltage input resistor (AC1362) error.

3 The output common must be kept within ±3 V of power common.

4 Loads heavier than 50 kΩ will degrade nonlinearity and gain temperature coefficient.

5 The current-to-voltage conversion resistor (AC1362) is supplied as a plug-in component for mounting external to the module. All backplanes and mounting cards provide pin

sockets for mounting the AC1362 resistor.

Specifications subject to change without notice.

Rev. 0 | Page 4 of 8