Emerson Rosemount 3490 Series Reference Manual page 144

Service and troubleshooting
January 2021
Table 5-1: Control Unit Readings
Category Parameter
Fault report D831 Fault Report
(1) PV, SV, TV, and FV are described in the section
5.3.7 Diagnostic data for the control unit
Menu
Table 5-2: Diagnostic Data
Parameter
D835
D840
D842
D844
D845
D846
D848
D849
144
(continued)
Description
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.
Optional change: transmitter input channel settings (advanced
MONITOR → [CONTROLLER] → DIAGNOSTICS
Description
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.
mA Input % This indicates the present electrical input current in mA.
See the section
settings (advanced users)
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)
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
Next pump down This indicates the time remaining before the next pump-down is
started. See
feature details.
Free memory This indicates the percentage of free memory remaining for the
(Rosemount 3493 data logging feature.
only)
See Data logging on the Rosemount 3493
Alarm feature details.
Date of change This indicates the date on which a parameter was last edited.
1st Pwr Date This indicates the date on which the control unit was first
powered-up.
Optional change: transmitter input channel
for how this parameter is used.
for how this parameter is used.
Fault mode relay).
Pump-down (Rosemount 3491 and 3492 only)
Reference Manual
00809-0100-4841
MENU
Fault Report
users).
for
for the Low Memory
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