Measurement Computing PointScan 300 Series rev.1.0 - Manual (Page 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.