Emerson Vission 20/20 Operation And Service Manual page 211

Appendix B • Vission 20/20 Application Procedures
Step 5: Auxiliary I/O (Analog Inputs) Alarm and
Trip Setup
If an alarm or trip setpoint for the vessel level is desired,
then navigate to Auxiliary I/O page 3 and setup any alarm
or trip function for the vessel level.
You have the option to select:
• Alarm / Trip : Neither, Alarm Only, Trip Only, Both
• Inhibit: Checking the Inhibit box will prevent the
compressor from starting if the analog input falls
below the Low Alarm setpoint or above the Hi Alarm
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0
Figure B-33. Auxiliary I/O Alarm and Trip Setup
setpoint. If the compressor is running while this
occurs, it will not shutdown if the "Alarm Only" func-
tion were selected (as shown below).
• In the example in Figure B-33, Auxiliary #5 and #6
Analog Inputs were setup to function as "Alarm
Only". The alarm points have been set to 0% and
75% level. These values would need to be adjusted
for appropriate alarm values. The inhibit box was
not selected in the example above, so the com-
pressor will start even when the analog inputs are
outside the alarm ranges shown.
• Continue to step 6.
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