OPERATION
5
35
TT 51 SERIES
www.krohne.com
08/2015 - 4000754203 - MA TT 51 R03 en
5.5 Diagnostic information according to NAMUR NE 107
Diagnostic information about the connected sensor/sensors is available in the configuration
software ConSoft.
The HART
®
diagnostic messages are generated in accordance with NAMUR NE 107 for:
•
Sensor break (failure / sensor wire break on Ch1 or Ch2)
•
Sensor short-circuit (failure / sensor wire short-circuit on Ch1 or Ch2)
•
Sensor low isolation (failure / low internal isolation in sensor on Ch1 or Ch2)
•
Sensor drift (failure / sensor drift between Ch1 and Ch2)
•
Sensor backup, automatic switchover from defective sensor (maintenance required / change
the sensor on Ch1 or Ch2)
•
Transmitter error (failure/transmitter error, non-correctable in the transmitter)
For complete information about all diagnostic information available from the transmitters, refer
to the following tables.
Explanations acc. to NE 107
•
C: check function
•
S: not within specification
•
M: maintenance required
•
F: failure
Messages in AMS, PDM and FC 375 / FC 475 device
diagnostic
Actions
Standard
NE 107
Signal
[12]
Error message
Error correction
Transmitter
C
Primary variable out of
limits
Check the limits for connected sensor. Replace the sensor
allocated to the primary variable.
Transmitter
C
Non-primary variable out
of limits
Check the limits for connected sensor. Replace the sensor
allocated to the non-primary variable.
Transmitter
C
Primary variable analogue
output saturated
Check the limits for connected sensor. Ambient
temperature is higher then stated limits for sensor, which
is allocated to the primary variable analogue output.
Replace the sensor allocated to the primary variable
analogue output.
Transmitter
I
Primary variable analogue
output fixed
Transmitter in Multi-Drop mode or loop test.
Transmitter
C
More status variable
Check device specific errors for more information.
Transmitter
I
Cold start
Transmitter is in cold start mode.
Transmitter
I
Configuration changed
Information for other softwares.
Transmitter
C
Field device malfunction
Make a self test to find out more. Check even device
specific diagnostic. If the error remains replace the device.
Extended device status
Extended device status
Extended device status
Extended device status
Transmitter
M
Maintenance required
Check device specific diagnostic for more information
about sensors and transmitter.
Transmitter
M
Device variable alert
Check device specific diagnostic for more information
about sensors and transmitter.
MA_OPTITEMP_TT_51_en_150828_4000754203_R03.book Page 35 Friday, August 28, 2015 10:54 AM
