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TM70Bi V3.1 (03/09) 1121174.pdf

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15.1 - INTRODUCTION and FUNCTIONAL DESCRIPTION

The IN0450P electronic card can be conected to the LR70, 0-3V analogue input and it allows to

measure the frequency coming from a pulse generator operating between 0 - 450 Hz range.

This electronic card is a frequency voltage converter and it can be used, for example, as an

interface between an anemometer (sensor) that provides a pulsed signal, in order to show in the

transmitter’s display the speed of the wind, in real time mode, using the feedback option.

The card supplies a +12v DC voltage output to power the sensor.

Technical characteristics:

� Maximum resolution: 8 bits.

� Input frequency range: 0 – 450 Hz.

� Galvanically isolated from the main logic board (LR70).

� Operating temperature range: –20ºC a +70ºC

Signals and connections block diagram:

+12v

ENTRADA PULSOS

PULSED SIGNAL INPUT

GND

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Cervis TM70 Installationshandbuch Seite 52