Ohms Inputs; Shield Grounding - Honeywell ControlEdge 900 platform Hardware Planning And Installation Manual

OHMs Inputs

Ohms inputs are wired similar to 2-wire RTD inputs. That is, they
require a current source, and thus must use one of the IRTD current
sources. Also, two terminals are jumpered together as they are for
two-wire RTD inputs.
Analog channels wired for Ohms inputs differ from RTD inputs in
these aspects:
Ohms inputs connect to variable resistance devices other than
n
RTDs, and
Ohms inputs are configured in ControlEdge Builder as Ohms
n
inputs, rather than as RTD inputs.
Examples of wiring for resistance inputs are given in
section.

Shield Grounding

Shields must be grounded as described under Shield Grounding at
the beginning of this guide.
CAUTION:
- Hazardous voltages exist at terminal blocks.
- Using switches at field devices disconnect the field wiring from
power sources before servicing.
- Failure to comply with these instructions could result in death
or serious injury.
RTD Inputs
123