Impulse DSCA40_41 User Manual download pdf

High Performance Signal Conditioners

DSCA

For information call 800-444-7644

146

DSCA40/41

Analog Voltage Input Signal Conditioners, Wide Bandwidth

Description

Each DSCA40/41 voltage input module provides a single channel of analog

input which is filtered, isolated, amplified, and converted to a high level voltage

output. Signal filtering is accomplished with a five-pole filter. An anti-aliasing pole

is located on the field side of the isolation barrier, and the other four poles are

on the system side. After the initial field-side filtering, the input signal is chopped

by a proprietary chopper circuit. Isolation is provided by transformer coupling,

again using a proprietary technique to suppress transmission of common mode

spikes or surges.

Module output is either voltage or current. For current output models a dedicated

loop supply is provided at terminal 3 (+OUT) with loop return located at terminal

4 (-OUT). The system-side load may be either floating or grounded.

Special input circuits provide protection against accidental connection of power-

line voltages up to 240VAC and against transient events as defined by ANSI/

IEEE C37.90.1. Protection circuits are also present on the signal output and

power input terminals to guard against transient events and power reversal.

Signal and power lines are secured to the module using screw terminals which

are in pluggable terminal blocks for ease of system assembly and reconfiguration.

The modules have excellent stability over time and do not require recalibration,

however, zero and span settings are adjustable up to ±5% to accommodate

situations where fine-tuning is desired. The adjustments are made using

potentiometers located under the front panel label and are non-interactive for

ease of use.

Figure 1: DSCA40/41 Block Diagram

▲

Features

 Accepts Millivolt and Voltage Level Signals

 Industry Standard Output of either 0-10V,

±10V, 0-20mA, or 4-20mA

 1500Vrms Transformer Isolation

 ANSI/IEEE C37.90.1 Transient Protection

 Input Protected to 240VAC Continuous

 True 3-Way Isolation

 Wide Range of Supply Voltage

 100dB CMR

 3 kHz Signal Bandwidth

 ±0.03% Accuracy

 ±0.01% Linearity

 Easily Mounts on Standard DIN Rail

 C-UL-US Listed

 CE and ATEX Compliant

1 2

Summary of Contents

Page 1 - DSCA40/41

High Performance Signal ConditionersDSCAFor information call 800-444-7644146DSCA40/41Analog Voltage Input Signal Conditioners, Wide BandwidthDescripti

Page 2 - Ordering Information

High Performance Signal ConditionersDSCAVisit our website www.dataforth.com147DSCASpecificationsModel DSCA40 DSCA41Input Range +10mV to +10

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Impulse DSCA40_41 User Manual

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