Emerson Rosemount 3490 Series, Reference Manual

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Table 5-1: Control Unit Readings
(continued)
Category Parameter Description MENU
Fault report D831 Fault Report This is for viewing live faults.
The highest priority fault is listed first. Use the
UP/
DOWN-ARROW
buttons to scroll through the list
if more than one fault exists. If there are no live
faults, the fault report indicates “none”.
See
Table 4-22 for a summary of other fault
reporting features.
Fault Report
(1) PV, SV, TV, and FV are described in the section Optional change: transmitter input channel settings (advanced users) .
5.3.7 Diagnostic data for the control unit
Menu
MONITOR
→
[CONTROLLER]
→
DIAGNOSTICS
Table 5-2: Diagnostic Data
Parameter Description
D835 I/P Status This indicates a series of 0 and 1 digits which represent the
inactive (0) and active (1) digital trigger inputs.
The first digit represents digital trigger input
IN1 , and the second
digit represents digital trigger input IN2 .
D840 mA Input % This indicates the present electrical input current in mA.
See the section
Optional change: transmitter input channel
settings (advanced users) for how this parameter is used.
D842 mA Input % This indicates the present electrical input current as a percentage
of the 4–20 mA range.
See
Optional change: transmitter input channel settings
(advanced users) for how this parameter is used.
D844 CU temperature This indicates the present operating temperature within the
Rosemount 3490 Series Control Unit. If above 65 °C, it is a fault
condition (see
Fault mode relay ).
D845 Next pump down This indicates the time remaining before the next pump-down is
started. See
Pump-down (Rosemount 3491 and 3492 only) for
feature details.
D846 Free memory
(Rosemount 3493
only) This indicates the percentage of free memory remaining for the
data logging feature.
See
Data logging on the Rosemount 3493 for the Low Memory
Alarm feature details.
D848 Date of change This indicates the date on which a parameter was last edited.
D849 1st Pwr Date This indicates the date on which the control unit was first
powered-up.
Service and troubleshooting Reference Manual
January 2021 00809-0100-4841
144 Emerson.com/Rosemount