dsca45-08 Dataforth Corporation, dsca45-08 Datasheet

dsca45-08

Manufacturer Part Number

dsca45-08

Description

Frequency Input Signal Conditioners

Manufacturer

Dataforth Corporation

Datasheet

1.DSCA45-08.pdf (2 pages)

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DSCA45

Frequency Input Signal Conditioners

Description

Each DSCA45 frequency input module provides a single channel of frequency

input which is isolated and converted to a standard analog voltage or current

output (Figure 1).

The frequency input signal can be a TTL level or zero-crossing signal. Terminal

7 (-IN) on the field-side terminal block is the “common” or ground connection for

input signals. A TTL signal is connected from terminal 6 (+IN) to terminal 7 (-IN),

while a zero-crossing signal is connected from terminal 5 (+EXC) to terminal 7

(-IN). Input circuitry for each of the signal types has hysteresis built in. An input

signal must cross entirely through the hysteresis region in order to trigger the

threshold comparator.

A +5.1V excitation is available for use with magnetic pick-up or contact-closure

type sensors. The excitation is available on terminal 8 (-EXC) with return at

terminal 7 (-IN).

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 480VAC 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 pluggable terminal blocks for ease of system assembly and reconfiguration.

DSCA45 modules have excellent stability over time and do not require

recalibration, however, both zero and span settings are adjustable to accommo-

Figure 1: DSCA45 Block Diagram

210

For information call 800-444-7644

date 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.

High Performance Signal Conditioners

• Accepts Frequency Inputs of 0 to 100kHz

• Industry Standard Output of Either 0-10V,

• ±0.05% Factory Calibrated Accuracy

• Adjustable Zero (±5%) and Span (±5%)

• 1500Vrms Transformer Isolation

• Input Overload Protected to 240VAC

• ANSI/IEEE C37.90.1 Transient Protection

• Mounts on Standard DIN Rail

• C-UL-US Listed

• CE and ATEX Compliant

0-20mA, or 4-20mA

Continuous

Features

DSCA

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dsca45-08 Summary of contents

Page 1

... Signal and power lines are secured to the module using screw terminals which are pluggable terminal blocks for ease of system assembly and reconfiguration. DSCA45 modules have excellent stability over time and do not require recalibration, however, both zero and span settings are adjustable to accommo- ...

Page 2

... DSCA45- 100kHz max DSCA45-02 Zero Crossing DSCA45-03 60mVp-p DSCA45-04 350Vp-p 4µs DSCA45-05 0.8V max DSCA45-06 2.4V min DSCA45-07 DSCA45-08 40mV 1.5V 100kΩ † Output Ranges Available 240Vrms max ANSI/IEEE C37.90.1 Output Range See Ordering Information ±5% Zero & Span 1. 10V to +10V – ...

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