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Rising level alarm
Menu
SETUP
→
[CONTROLLER]
→
APPLICATION
→
ALARM
Table 4-26: Rising Level Alarm Parameter
Parameter
Description
Factory default
P490
R Lev alrm del
The Rising Level alarm requires a minimum of one
Assist or Standby mode relay.
If any Standby relay is energized, monitoring of the
rising level is activated. For Assist relays, they must
all be energized for monitoring of the rising level to
be activated.
A timed delay (P490) starts after the monitoring is
activated. If the level is still rising after the delay time
has expired and the calculated rate of change of the
control unit PV (D800) is positive, the result is a
Rising Level alarm condition. The alarm condition
stops as soon as the rate of change is negative,
indicating a falling level.
For the Rising Level alarm to be indicated by a relay
output or the current output, a method must be
selected.
0:00 m:s
Related information
Auxiliary functions for relay modes
Rate of change mode relay
Set-up alarms
Pump efficiency alarm (Rosemount 3491 and 3492 only)
Menu
SETUP
→
[CONTROLLER]
→
APPLICATION
→
ALARM
The pump efficiency feature allows an alarm to be indicated (P550, P4*1) if the calculated
pump efficiency falls below a defined limit (P495).
Getting started
Reference Manual
January 2021
00809-0100-4841
118
Emerson.com/Rosemount
Summary of Contents for Rosemount 3490 Series
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Page 8: ...Introduction Reference Manual January 2021 00809 0100 4841 8 Emerson com Rosemount ...
Page 16: ...Control unit overview Reference Manual January 2021 00809 0100 4841 16 Emerson com Rosemount ...
Page 36: ...Installation Reference Manual January 2021 00809 0100 4841 36 Emerson com Rosemount ...
Page 134: ...Getting started Reference Manual January 2021 00809 0100 4841 134 Emerson com Rosemount ...
Page 184: ...Additional features Reference Manual January 2021 00809 0100 4841 184 Emerson com Rosemount ...
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