Measurement-computing PointScan 300 Series rev.1.0 Manual do Utilizador descarregar pdf (Página 33)

PointScan/300 User’s Manual

9-12-01

Analog Input Modules 6-5

PointScan/303

4-20 mA Loop Current Limiter

This optional 4-20 mA current limiter module provides overcurrent protection when connected in series

with loop powered 4-20 mA analog devices. One pair of screw terminals is provided for the loop power

source, and one terminal is provided for each of the sixteen protected loops. Refer to the diagram below for

sample wiring connections.

Overcurrent LEDs

A status LED will be lit if the 4-20 mA loop current for that channel exceeds 25 mA.

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Measurement-computing PointScan 300 Series rev.1.0 Manual do Utilizador Página 33