Emerson Rosemount 3490 Series Reference Manual page 122

Getting started
January 2021
Table 4-29: Alarm Indication Selection
Parameter
P540
P541
P542
P543
P544
P545
P547
P548
P549
P550
P551
122
Description
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
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.
Log mem filling Select the indication method for the alarm condition
that happens while the available logging memory is
low. See also
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 Digital inputs IN1 and IN2
Alarm action required for this feature.
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 Custom mode relay
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.
Rising Level Select the indication method for the Rising Level
alarm condition.
See Rising level alarm
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 Relay operations alarm
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 Relay run-time alarm
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
3492 only)
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 No activity alarm
PV limits mode
Data logging on the Rosemount
for how to select the
for information.
for information.
for information.
for information.
for information.
for information.
Reference Manual
00809-0100-4841
Factory default
None
relay.
None
None
3493.
None
None
None
None
None
None
None
None
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