Endress+Hauser iTHERM TrustSens TM371, Operating Instructions Manual

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Diagnostics and troubleshooting iTHERM TrustSens TM371, TM372
36 Hauser
9.3 Diagnostic information
Status signal and diagnostic behavior can be configured manually.
Status signal - Digital information available via HART® communication
Letter/
symbol Status signal Meaning of the status signal
1)
F Failure The device or its periphery behaves in such a way that the measurement value is
no longer valid. This includes faults/failures which are caused by the process being
measured, but have an impact on the ability to perform a measurement e.g. “no
process signal” detected.
C Function
check The device is deliberately serviced, configured, parameterized or is in simulation
mode. A situation exists where the output signal does not represent the process
value and is therefore not valid.
S Out of
specification The device is operating outside of its technical specifications or internal diagnostic
functions indicate that the current process conditions increase the measurement
uncertainty (i.e. during plant start-up or cleaning processes).
M Maintenance
required Deviation from normal operation, the device still works, but should be attended to
soon to ensure continued operation, e.g. build-up, corrosion, zero point
adjustment not possible or memory for data storage almost full.
1) Valid for the default mappings to the diagnostic numbers
Diagnostic behavior - Analog information via current output and LED
Diagnostic behavior Meaning of the behavior
Alarm Measurement is interrupted. Mostly the measured data is invalid and the
configured failure current is set. A diagnostic message is generated.
Warning Usually, the device continues to measure. A diagnostic message is generated.
Disabled The diagnostic event is completely surpressed even if the device is not working
properly.
Diagnostics event and event text
Diagnostics event
Status signal Event number Event text
↓ ↓ ↓
Example 001 Device failure
3-digit number
The fault can be identified by means of the diagnostics event. The event text helps you by
providing information about the fault.