Chapter 5 Troubleshooting; Overview; Hart ® Host Diagnostics; Lcd Display Diagnostics - Emerson Rosemount 3051S Manual

Reference Manual
00809-0100-4804
5 Troubleshooting
5.1

Overview

This section contains information for troubleshooting the Rosemount
Electronic Remote Sensor (ERS)
LCD display or a HART
5.2 HART
The ERS System provides numerous diagnostic alerts via a HART host, including a
communication device and AMS
If a malfunction is suspected despite the absence of any diagnostic messages on a
communication device or host, follow the procedures described here to verify that ERS
System and process connections are in good working order.
5.3

LCD display diagnostics

The optional LCD display on the ERS System can show abbreviated operation, error, and
warning messages for troubleshooting.
Messages appear according to their priority; normal operating messages appear last.
To determine the cause of a message, use a HART
System. A description of each LCD diagnostic message follows.
Error messages
An error indicator message appears on the LCD display to warn of serious problems
affecting the operation of the ERS System. The error message is displayed until the error
condition is corrected; ERROR appears at the bottom of the display.
Warning messages
Warning messages appear on the LCD display to alert the user of user-repairable problems
with the ERS System, or current operations. Warning messages appear alternately with
other information until the warning condition is corrected or the ERS System completes the
operation that triggered the warning message.
5.3.1 CURR SAT
LCD display message
CURR SAT
Host diagnostic message
mA Output Saturated
Potential cause
The primary variable has exceeded the range points defined for the 4-20 mA analog
output signal. The analog output is fixed at the high or low saturation point and is not
representative of the current process conditions.
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System. Diagnostic messages are communicated via the
™
host.
®
host diagnostics
®
Device Manager.
™
3051S
™
host to further interrogate the ERS
®
Troubleshooting
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