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Reference Manual
00809-0100-4841
Related information
Set-up the relays
Set-up the current output
Control unit reporting of alarms and faults
Table 4-30: Control Unit Reporting of Alarms
Source
Cause
3490
Current Output reached
linear limit
Logging memory almost
full
Logging memory is full
Digital Input 1 active
Digital Input 2 active
Alarm suppressed by
digital input
Custom relay operation
retries exceeded
Current input below lower
linear limit
Current input above
higher linear limit
Raising level despite
relays on
Relay number of
operations exceeded
Relay run-time exceeded
Pump efficiency below
(1)
limit
No activity of Control
Relay
Xmtr
Transmitter PV out-of-
limits
(1)
The pump efficiency feature is on Rosemount 3491 and 3492 control units.
Emerson.com/Rosemount
As seen on
Status
screen
LED
mA o/p Sat
N/A
Lg Mem Filling
N/A
Log Mem Full
N/A
Digital In 1
N/A
Digital In 2
N/A
Alarm
N/A
Suppressed
Max Retries
N/A
mA In Low
N/A
mA In High
N/A
Rising Level
N/A
Relay Operations N/A
Relay Runtime
N/A
Pump Efficiency
N/A
No activity
N/A
PV OL
N/A
Full PV
Relay
Current
display
output
output
N/A
Yes
Yes
N/A
Yes
Yes
N/A
N/A
Yes
N/A
Yes
Yes
N/A
Yes
Yes
N/A
N/A
N/A
N/A
Yes
Yes
N/A
Yes
Yes
N/A
Yes
Yes
N/A
Yes
Yes
N/A
Yes
Yes
N/A
Yes
Yes
N/A
Yes
Yes
N/A
Yes
Yes
N/A
N/A
Yes
Getting started
January 2021
Alarm
Fault
report
report
(D830)
(D831)
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
Yes
N/A
123
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