KROHNE OPTITEMP TT 51 EN - Manual (Page 33)

OPERATION
5
33
TT 51 SERIES
www.krohne.com 09/2010 - 4000754201 - MA TT 51 R01 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 per NE 107
• C: check function
• S: not within specification
• M: maintenance required
• F: failure
Messages in AMS, PDM and FC375 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.