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Reference Manual

00809-0100-4001, Rev JA

Section 3: Configuration

November 2012

Configuration

3.11.2 Alarm and saturation levels for burst mode

Transmitters set to burst mode handle saturation and alarm conditions differently.

Alarm conditions:

 Analog output switches to alarm value

 Primary variable is burst with a status bit set

 Percent of range follows primary variable

 Temperature is burst with a status bit set

Saturation:

 Analog output switches to saturation value

 Primary variable is burst normally

 Temperature is burst normally

3.11.3 Alarm and saturation values for multidrop mode

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

3.11.4 Alarm level verification

If the transmitter electronics board, sensor module, or LCD display is repaired or replaced, verify

the transmitter alarm level before returning the transmitter to service. 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 Tables 3-3, 3-4, and 3-5 on page 61, and “Loop test” on page 62).

3.12 Diagnostics and service

Diagnostics and service functions listed below are primarily for use after field installation. The

Loop Test feature is designed to verify proper loop wiring and transmitter output.

3.12.1 Loop test

The Loop Test command verifies the output of the transmitter, the integrity of the loop, and the

operations of any recorders or similar devices installed in the loop.

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Emerson 3051S Spezifikationen Seite 72