Rockwell Automation 1758-RTU202 DataSite Hardware User Manual - Manual (Page 30)

Publication 1758-UM001D-EN-P - June 2011
30 Wiring the Controller
I/O Wiring
For the orifice plate metering (AGA3), the input signals are differential
pressure, static pressure, and temperature. For the turbine metering (AGA7),
the input signals are pulse counting, static pressure, and temperature. The
Datasite controller has 8-analog input channels (two channels also provide a
HART point-to-point interface), a 13 device HART multi-point interface, and
3-channel pulse counting (PI) acquisition channels.
Refer to Power Source Requirements on page 28 for details on wiring.
Minimizing Electrical Noise
Because of the variety of applications and environments where controllers are
installed and operating, it is impossible to ensure that all environmental noise
will be removed by input filters. To help reduce the effects of environmental
noise, install the DataSite controller in a properly rated enclosure, for example
a NEMA enclosure. Make sure that the DataSite controller is properly
grounded.
A system may malfunction due to a change in the operating environment after
a period of time. Periodically check system operation, particularly when new
machinery or other noise sources are installed near the DataSite controller.