Analog Inputs - Emerson VILTER MicroVission Operation And Service Manual

Section 20 • Auxiliary I/O

Analog Inputs

The Analog inputs section of the auxiliary I/O screen al-
lows an operator to define the function of an instrument
connected to the MicroVission. For Auxiliary Analog
Inputs Screens. The analog inputs can be configured to
simply monitor an input for informational purposes or
used as a control input for the auxiliary digital and ana-
log outputs. The analog inputs can also be configured to
alarm, trip, and inhibit on specified values.
• Alarm / Trip: This drop-down box allows the operator
to select whether the analog input should generate
an alarm, trip, or both when the input value exceeds
the limits entered into the alarm and trip entry boxes.
• Inhibit: Selecting this checkbox will prevent a start if
the input value exceeds the alarm limit values.
Figure 20-5. Auxiliary I/O Screen – Analog Inputs (Page 3)
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3
• Low Alarm: This defines the lower limit of the input
value that when exceeded will generate an alarm.
• High Alarm: This defines the upper limit of the input
value, that when exceeded will generate an alarm.
• Low Trip: Defines the lower limit of the input value
that when exceeded will generate a trip.
• High Trip: Defines the upper limit of the input value
that when exceeded will generate a trip.
• Delay: Defines the time period for which input value
is checked with alarm/trip setpoints before showing
alarm or trip. If the input value is continuously above
or below the alarm or trip setpoints, only then an
alarm or trip is generated.
20 – 5