dsca32-03 Dataforth Corporation, dsca32-03 Datasheet

dsca32-03

Manufacturer Part Number

dsca32-03

Description

Analog Current Input Signal Conditioners

Manufacturer

Dataforth Corporation

Datasheet

1.DSCA32-03.pdf (2 pages)

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DSCA32

Analog Current Input Signal Conditioners

Description

Each DSCA32 current 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 which which is

optimized for step response. 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: DSCA32 Block Diagram

190

For information call 800-444-7644

High Performance Signal Conditioners

• Accepts Milliamp Level Signals

• Industry Standard Output of either 0 to 10V,

• 1500Vrms Transformer Isolation

• ANSI/IEEE C37.90.1 Transient Protection

• Input Protected to 240VAC Continuous

• True 3-Way Isolation

• Wide Range of Supply Voltage

• 105dB CMR

• 5 Poles of Filtering

• ±0.03% Accuracy

• ±0.01% Linearity

• Easily Mounts on Standard DIN Rail

• C-UL-US Listed

• CE and ATEX Compliant

0 to 20mA, or 4 to 20mA

Features

DSCA

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dsca32-03 Summary of contents

Page 1

... DSCA32 Analog Current Input Signal Conditioners Description Each DSCA32 current 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 which which is optimized for step response. An anti-aliasing pole is located on the field side of the isolation barrier, and the other four poles are on the system side ...

Page 2

... Model Input Range Output Range DSCA32-01 4mA to 20mA DSCA32-02 0mA to 20mA DSCA32-03 ±20mA † Output Ranges Available Output Range Part No. Suffix Example 1. 10V to +10V NONE DSCA32-03 – +10V NONE DSCA32- 20mA C DSCA32-01C 20mA E DSCA32-01E † 1 191 ...

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