Emerson Vission 20/20 Operation And Service Manual page 210

Appendix B • Vission 20/20 Application Procedures
Step 4: Instrument Calibration Screen Setup of
Auxiliary Analog Inputs.
Now that the auxiliary analog inputs have been selected
and named, the scaling for the inputs needs to be setup.
Navigate to Instrument Calibration screen page 4 and
setup the auxiliary analog input(s). These inputs are
4-20ma signals and the scaling will be setup so that:
a. The units of this signal are in "percent".
b. 4 ma signal corresponds to 0% level.
c. 20 ma signal corresponds to a 100% level.
B - 54
Figure B-32. Scaling Setup for Auxiliary Analog Inputs
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0
The setup example shown in Figure B-32, Auxiliary #5
Analog Input was setup so that the units of the input will
readout in "percent". At 4.0ma input, the level percent-
age is equal to 0.0%. At 20.0ma input, the level percent-
age is equal to 100.0%. Setup Auxiliary #6 analog input
in the same way.
Continue to step 5.