Reference Manual
00809-0100-4021, Rev FB
August 2011
Rosemount 3144P
3-38
HART
LCD Display
The LCD displays abbreviated diagnostic messages for troubleshooting the
transmitter. To accommodate two word messages, the display alternates
between the first and second word. Some diagnostic messages have a higher
priority than others, so messages appear according to priority, with normal
operating messages appearing last. Messages on the
Process Variable
line
refer to general device conditions, while messages on the
Process Variable
Unit
line refer to specific causes for these conditions. A description of each
diagnostic message follows.
SPARE PARTS
This spare part is available for the 3144P Temperature transmitter.
Table 3-5. LCD Display Error Warning Descriptions
Message
Description
[BLANK]
If the meter does not appear to function, make sure the transmitter is configured for the meter option you desire.
The meter will not function if the LCD Display option is set to Not Used.
FAIL -or- HDWR FAIL
This message indicates one of several conditions including:
The transmitter has experienced an electronics module failure.
The transmitter self-test has failed.
If diagnostics indicate a failure of the electronics module, replace the electronics module with a new one.
Contact the nearest Emerson Process Management Field Service Center if necessary.
SNSR 1 FAIL -or-
SNSR 2 FAIL
The transmitter has detected an open or shorted sensor condition. The sensor(s) might be disconnected,
connected improperly, or malfunctioning. Check the sensor connections and sensor continuity.
SNSR 1 SAT -or-
SNSR 2 SAT
The temperature sensed by the transmitter exceeds the sensor limits for this particular sensor type.
HOUSG SAT
The transmitter operating temperature limits (–40 to 185 °F (40 to 85 °C)) have been exceeded.
LOOP FIXED
During a loop test or a 4–20 mA output trim, the analog output defaults to a fixed value. The
Process Variable
line of the display alternates between the amount of current selected in milliamperes and “WARN.” The
Process
Variable Unit
line toggles between “LOOP,” “FIXED,” and the amount of current selected in milliamperes.
OFLOW
The location of the decimal point, as configured in the meter setup, is not compatible with the value to be
displayed by the meter. For example, if the meter is measuring a process temperature greater than 9.9999
degrees, and the meter decimal point is set to 4 digit precision, the meter will display an “OFLOW” message
because it is only capable of displaying a maximum value of 9.9999 when set to 4 digit precision.
HOT BU
Hot Backup is enabled and Sensor 1 has failed. This message is displayed on the
Process Variable
line and is
always accompanied by a more descriptive message on the
Process Variable Unit
line. In the case of a Sensor
1 failure with Hot Backup enabled, for example, the
Process Variable
line displays “HOT BU,” and the
Process
Variable Unit
line alternates between “SNSR 1” and “FAIL.”
WARN DRIFT ALERT
Drift Alert warning is enabled and the difference between Sensor 1 and Sensor 2 has exceeded the
user-specified limit. One of the sensors may be malfunctioning. The
Process Variable
line displays “WARN” and
the
Process Variable Unit
line alternates between “DRIFT” and “ALERT.”
ALARM DRIFT ALERT
The analog output is in alarm. Drift Alert alarm is enabled and the difference between Sensor 1 and Sensor 2
has exceeded the user-specified limit. The transmitter is still operating, but one of the sensors may be
malfunctioning. The
Process Variable
line displays “ALARM” and the
Process Variable Unit
line alternates
between “DRIFT” and “ALERT.”
ALARM
The digital and analog outputs are in alarm. Possible causes of this condition include, but are not limited to, an
electronics failure or an open sensor. This message is displayed on the
Process Variable
line and is always
accompanied by a more descriptive message on the
Process Variable Unit
line. In the case of a Sensor 1 failure,
for example, the
Process Variable
line displays “ALARM,” and the
Process Variable Unit
line alternates between
“SNSR 1” and “FAIL.”
WARN
The transmitter is still operating, but something is not correct. Possible causes of this condition include, but are
not limited to, an out-of-range sensor, a fixed loop, or an open sensor condition. In the case of a Sensor 2 failure
with Hot Backup enabled, the
Process Variable
line displays “WARN,” and the
Process Variable Unit
line
alternates between “SNSR 2” and “RANGE.”
Description
Part Number
Replacement electronics module assembly
03144-3111-0001
Aotewell Ltd
www.aotewell.com
Industry Automation
HongKong|UK|China
+86-755-8660-6182
