Measurement Computing PointScan 300 Series rev.1.0 - Manual (Page 32)

6-4 Analog Input Modules 9-12-01 PointScan/300 User’s Manual
PointScan/302
High Density Input Module
This high density 4-20 mA analog input module has 16 input channels that accept 4-20 mA signals from a
wide variety of field devices. One screw terminal is provided for the instrumentation ground, and one screw
terminal is provided for each input signal.
Open Loop Detection Feature
The IO Toolkit configuration program provides a selection that allows inputs below 4 mA to be reported as
zero, or be reported as negative values to detect loop failure.
Replaceable Current Shunts
This module base has replaceable 100 ohm current shunts, should a faulty field device or wiring error
causes the original shunt to overheat. To access these shunts, unplug the logic module from the base and
open the access door. A spare shunt is provided.
4-20 mA Input Scaling
Current inputs are reported as unscaled values from 0 to 32767. Refer to the IO Toolkit online help system
for more information.