Emerson Rosemount 3051S Series Reference Manual page 131

Reference Manual
00809-0100-4801, Rev HA
The rest of the configuration section explains the parameters for manual configuration of the Loop
Integrity diagnostic.
Figure 7-18. Manual Configuration of Power Advisory Main Screen
The Power Advisory configuration screen allows users to characterize the loop and configure the
Terminal Voltage Deviation Limit and the Action. Two instances of loop characterization data are
recorded and presented on this screen: Baseline and Previous Baseline. Baseline represents values from the
most recent loop characterization whereas Previous Baseline represents values recorded prior to the
most recent characterization.
Terminal Voltage
This field shows the current terminal Voltage value in Volts. The terminal Voltage is a dynamic value and
is directly related to the mA output value.
Terminal Voltage Deviation Limit
The terminal Voltage deviation limit should be set large enough that "expected" voltage changes do not
cause false failures. The default value of 1.5 V will accommodate typical deviation of customer power
supply voltage and loop tests (amp meters connected across the test diode on the terminal block). This
value should be increased if your loop has additional "expected" variation
Figure 7-19. Voltage Deviation Limit
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