Emerson Rosemount 3051S MultiVariable Reference Manual page 134

Troubleshooting
October 2018
Table 5-1: Diagnostic Message Troubleshooting
LCD display messages Host diagnostic
(LCD is reading
normally)
(LCD is reading
normally)
(1) LCD display messages will vary as it is specific to the possible problem.
Table 5-2: Transmitter Troubleshooting
Symptom
Transmitter milliamp
output is zero
Transmitter not
communicating with
Field Communicator,
AMS Device Manager,
or Engineering
Assistant
Transmitter milliamp
output is low or high
Transmitter will not
respond to changes in
measured process
variables
134
Possible problems
message
Configuration changed A modification has
been made to the
device configuration
using a host other than
AMS Device Manager.
Cold start Transmitter was
restarted.
Corrective actions
Verify power is applied to signal terminals.
Check power wires for reversed polarity.
Verify terminal voltage is 12 to 42.4 Vdc.
Check for open diode across test terminal on Rosemount 3051SMV
terminal block.
Verify the output is between 4 and 20 mA or saturation levels.
Verify clean DC Power to transmitter (Max AC noise 0.2 volts peak to
peak).
Check loop resistance, 250–1321 Ω.
Loop Resistance = (Power supply voltage - transmitter voltage)/loop
current
Check if unit is at an alternate HART address.
Verify applied process variables.
Verify 4 and 20 mA range points and flow configuration.
Verify output is not in alarm or saturation condition.
An analog output trim or sensor trim may be required.
Check to ensure that the equalization valve is closed.
Check test equipment.
Check impulse piping or manifold for blockage.
Verify primary variable measurement is between the 4 and 20 mA set
points.
Verify output is not in alarm or saturation condition.
Verify transmitter is not in Loop Test, Multidrop, Test Calculation,
or Fixed Variable mode.
Reference Manual
00809-0100-4803
(continued)
Recommended
actions
No action is required;
message will clear after
a change is made using
AMS.
No action is required;
message will clear
automatically.
Rosemount 3051S Multivariable Transmitter