Diagnostic Messages; Diagnostic Messages: Failed - Emerson Rosemount 644 Reference Manual

Section 6: Troubleshooting
April 2015
6.4

Diagnostic messages

Listed in the below sections are detailed tables of the possible messages that will appear on
either the LCD/LOI Display, a Field Communicator, or an AMS
tables below to diagnose particular status messages.
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6.4.1

Diagnostic messages: Failed

Table 6-2. Status: Failed – Fix Now
Alert name LCD screen LOI screen
ALARM
DEVICE
Electronics
Failure
ALARM
FAIL
ALARM
SNSR 1
(1)
Sensor Open
ALARM
FAIL
ALARM
SNSR 1
(1)
Sensor Short
ALARM
FAIL
ALARM
Terminal
TERM
Temperature
Failure ALARM
FAIL
80
Failed
Maintenance
Advisory
Problem
If diagnostics indicate and
electronics failure, essential
ALARM
electronics in the device
DEVICE
have failed. For example,
the transmitter may have
ALARM
experienced an electronics
FAIL
failure while attempting to
store information.
This message indicates that
ALARM
the transmitter has
SNSR 1
detected an open sensor
condition. The sensor may
be disconnected,
ALARM
connected improperly, or
FAIL
malfunctioning.
This message indicates that
ALARM
the transmitter has
SNSR 1
detected a shorted sensor
condition. The sensor may
be disconnected,
ALARM
connected improperly, or
FAIL
malfunctioning.
ALARM
TERM
The Terminal Temperature
is outside the internal RTD's
specified operating range.
ALARM
FAIL
Reference Manual
00809-0200-4728, Rev RA
®
Device Manager system. Use the
Recommended action
1. Restart the transmitter.
2. If condition persists, replace the
transmitter. Contact the nearest
Emerson Process Management Field
Service Center if necessary.
1. Verify the sensor connection and wiring.
Refer to the wiring diagrams found on
the transmitter label to ensure proper
wiring.
2. Verify the integrity of the sensor and
sensor lead wires. If the sensor is faulty,
repair or replace the sensor.
1. Verify the process temperature is within
the specified sensor's range. Use the
Sensor Information button to compare
with the process temperature.
2. Verify the sensor is properly wired and
connected to the terminals.
3. Verify the integrity of the sensor and
sensor lead wires. If the sensor is faulty,
repair or replace the sensor.
1. Verify the ambient temperature is within
the device specified operating range
using the Terminal Temperature
Information Button.
Troubleshooting