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Table 4-29: Alarm Indication Selection
Parameter
Description
Factory default
P540
PV Over Limits
Select the indication method for the alarm condition
that happens while the control unit PV value is
outside pre-set limits. See also
None
P541
mA Out Sat
Select the indication method for the alarm condition
that happens while the output current is ≤ 3.8 mA or
≥ 20.5 mA.
None
P542
Log mem filling Select the indication method for the alarm condition
that happens while the available logging memory is
low. See also
Data logging on the Rosemount 3493
None
P543
Digital Input
Select the indication method for the alarm condition
that happens while a digital input, configured with
an action to force this alarm, is energized.
See
Alarm
action required for this feature.
None
P544
Max retries
Select the indication method for the alarm condition
that happens while a Custom relay operation is
unable to complete, even after a pre-set number of
attempts (P257).
See also
for information.
None
P545
mA In Sat
Select the indication method for the alarm condition
that happens while the output current is saturated
i.e. ≤ 3.7 mA or ≥ 20.75 mA.
None
P547
Rising Level
Select the indication method for the Rising Level
alarm condition.
See
for information.
None
P548
RL Operations
Select the indication method for the alarm condition
that happens while a relay operation counter is
higher than a pre-set limit.
See
for information.
None
P549
RL runtime
Select the indication method for the alarm condition
that happens while a relay is energized for longer
than a pre-set period.
See
None
P550
Pump efficiency Available on the Rosemount 3491 and 3492 control
units only.
Select the indication method for the alarm condition
that happens while the calculated pump efficiency
falls below a pre-set limit.
See
Pump efficiency alarm (Rosemount 3491 and
None
P551
No activity
Select the indication method for the alarm condition
that happens while any selected relay is de-energized
for longer than a pre-set period.
See
None
Getting started
Reference Manual
January 2021
00809-0100-4841
122
Emerson.com/Rosemount
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