dsca39-07 Dataforth Corporation, dsca39-07 Datasheet

dsca39-07

Manufacturer Part Number

dsca39-07

Description

Current Output Signal Conditioners

Manufacturer

Dataforth Corporation

Datasheet

1.DSCA39-07.pdf (2 pages)

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Description

Each DSCA39 current output module provides a single channel of analog

output. The input signal is buffered, isolated, filtered and converted to a unipolar

or bipolar current output. Signal filtering is accomplished with a five-pole filter

which provides 100dB per decade of attenuation above 1kHz. An anti-aliasing

pole is located on the system side of the isolation barrier, and the other four poles

are on the field side. After the initial system-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.

Special output 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 input 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.

DSCA39

Current Output Signal Conditioners

Figure 1: DSCA39 Block Diagram

202

For information call 800-444-7644

High Performance Signal Conditioners

• Accepts High-Level Voltage Input

• Provides 4 to 20mA, 0 to 20mA, or –20

• ANSI/IEEE C37.90.1 Transient Protection

• 1500Vrms Transformer Isolation

• ±0.03% Accuracy

• ±0.01% Linearity

• Output Protected to 240VAC Continuous

• True 3-Way Isolation

• Wide Range of Supply Voltage

• 100dB CMR

• Easily Mounts on Standard DIN Rail

• C-UL-US Listed

• CE and ATEX Compliant

to +20mA Output

Features

DSCA

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dsca39-07 Summary of contents

Page 1

... DSCA39 Current Output Signal Conditioners Description Each DSCA39 current output module provides a single channel of analog output. The input signal is buffered, isolated, filtered and converted to a unipolar or bipolar current output. Signal filtering is accomplished with a five-pole filter which provides 100dB per decade of attenuation above 1kHz. An anti-aliasing pole is located on the system side of the isolation barrier, and the other four poles are on the field side ...

Page 2

... This Equipment is Suitable for Use in Class I, Division 2, Groups Non-Hazardous Locations Only. 2.) Warning - Explosion Hazard - Substitution of Components May Impair Suitability for Class I, Division 2. 3.) Warning - Explosion Hazard - Do Not Disconnect Equipment Unless Power Has Been Switched Off or The Area is Known to be Non-Hazardous. High Performance Signal Conditioners DSCA39-05 DSCA39- 20mA –20mA to +20mA 10% * ...

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