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LMT S E R I E S |
M AG N E TOS T R I C T I V E L E V EL T R A N SM I T T ER | O I/L M T 10 0/ 2 0 0 - EN R E V. B
9 Troubleshooting
Error messages via HMI display and HART signal
In case of transmitter errors or malfunctioning, the HART signal (via DTM, EDDL) and HMI are capable of displaying specific error /
fault messages to aid the user in identifying the problem and resolving it In the case of an alarm, a message consisting of an icon
and text displays at the bottom of the process display Use the (1) key to call up the information level Use the “Diagnostics” menu
to bring up the error description with the corresponding help text In the error description, the error number is displayed in the
second line (M028 018) Two further lines are used to describe the error The device status is divided into four groups The message
text beside the icon in the display provides information about where to look for the error There are five areas: Electronics, Sensor,
Configuration, Operating and Process
Icon
Description
Error / failure
Functional check (for example, during simulation)
Out of specification
Maintenance required
Error states and alarms
The following represents the errors states / alarms the LMT Series transmitters can encounter along with the recovery action
needed to correct the issue
Error Message
Tx LCD Message
Possible Cause
Suggested Action
Tx Response
F218.023
Electronics NV Failure
Electronics memory is
corrupted
The electronics must be replaced
Analog signal to alarm
F226.044
Current Output
Failure
The output circuit could be
broken or not correctly
calibrated
A DAC (digital to output converter) trimming
should be performed and if the error persists the
communication board must be replaced
Analog signal to alarm
F228.039
Primary Current
Uncertain
The D to A converter is not
properly calibrated or
trimmed
A DAC (digital to output converter) trimming
should be performed and if the error persists the
communication board must be replaced
Analog signal to alarm
The device is not properly
configured
Check the device configuration
F244.003
Safety Function Flow
Failure
Calculation of safety function
did not occur in the proper
sequence
Restart the device If the condition persists
contact service for a replacement
Analog signal to alarm
F246.041
Electronics RAM
Failure
Electronics memory test failed
Restart the device If the condition persists
contact service for a replacement
Analog signal to alarm
Process data memory check
failed (dynamic duplicated
error)
F247.040
Electronics ROM
Failure
Program memory test failed
Restart the device If the condition persists
contact service for a replacement
Analog signal to alarm
F248.006
Self-test failure
Restart the device If the condition persists
contact service for a replacement
Analog signal to alarm
C138.036
Data Simulation
Warning
The Level Value produced in
output is derived by the value
simulated in input
Using a HART configurator (DTM - Hand held)
place device back in normal operating mode
(Remove input simulation)
No effect
C139.037
Alarm Simulation
Warning
An alarm condition is being
simulated by the device
Using a HART configurator (DTM - Hand held)
place device back in normal operating mode
(Remove input simulation)
Depends on alarm
simulated