Alarm And Saturation Values For Multidrop Mode; Alarm Level Verification; Process Alerts - Emerson Rosemount 3051S Series Reference Manual

Rosemount 3051S Series
Alarm and Saturation
Values for Multidrop
Mode

Alarm Level Verification

Process Alerts

Traditional Fast Keys 1, 4, 3, 5
Device Dashboard
Fast Keys
3-20
Transmitters set to multidrop mode handle saturation and alarm conditions
differently.
Alarm Conditions:
• Primary variable is sent with a status bit set
• Percent of range follows primary variable
• Temperature is sent with a status bit set
Saturation:
• Primary variable is sent normally
• Temperature is sent normally
The transmitter alarm level should be verified before returning the transmitter
to service if the following changes are made:
• Replacement of electronics board, SuperModule, or LCD display
• Alarm and saturation level configuration
This feature is also useful in testing the reaction of the control system to a
transmitter in an alarm state. To verify the transmitter alarm values, perform a
loop test and set the transmitter output to the alarm value (see Table 3-1,
Table 3-2, and Table 3-3 on page 3-18, and "Loop Test" on page 3-26).
Process alerts allow the user to configure the transmitter to output a HART
message when the configured data point is exceeded. Process alerts can be
set for pressure, temperature, or both. A process alert will be transmitted
2, 3
continuously if the pressure or temperature set points are exceeded and the
alert mode is ON. An alert will be displayed on a Field Communicator, AMS
status screen or in the error section of the LCD display. The alert will reset
once the value returns within range.
NOTE
HI alert value must be higher than the LO alert value. Both alert values must
be within the pressure or temperature sensor limits.
Field Communicator v3.3
To configure the process alerts with a Field Communicator, perform the
following procedure:
1. From the HOME screen, follow the fast key sequence "Process Alerts."
2. Select 3, "Config Press Alerts" to configure the pressure alert.
Select 4, "Config Temp Alerts" to configure the temperature alerts.
3. Use the right arrow key to configure the HI and LO alert values.
4. Use the left arrow to move back to the process alert menu.
Select 1, "Press Alert Mode" to turn on the pressure alert mode.
Select 2, "Temp Alert Mode" to turn on the temperature alert mode.
Reference Manual
00809-0100-4801, Rev FA
October 2010