Siemens SITRANS T Series - Page 186

Display
– NAMUR NE 107
NAMUR
– HCF
SIMATIC PDM/PLC
Symbol Device status Priority * Symbol Device status Priority *
Maintenance re‐
quired
4 Maintenance demanded 2
Cause:Output signal is still valid, but wear reserve is almost exhausted and/or a function will be limited soon.
Measure:Maintenance is strongly recommended as soon as possible.
Maintenance re‐
quired
4 Maintenance required 3
Cause: The output signal is still valid. No functional restrictions have been determined but the wear reservice will most likely
be exhausted in the next few weeks.
Measure: Maintenance of device should be planned.
Function test 2 Manual operation 4
Cause: Output signal temporarily invalid (e.g. frozen) due to work being performed on the device.
Measure: Manual mode over HMI or disable the engineering system.
Function test 2 Simulation mode 5
Cause: The output signal does temporarily not re󹪞ect the process because the output is based on a simulation value.
Measure: Simulation mode over HMI or disable the engineering system or restart device.
Failure 1 Out of service 6
Cause: The output signal does not represent the process value. The device mode is set to "Out of service".
Measure: Disable "Out of service" and enable normal operation.
Failure 1
(red)
Con󹪝guration error 7
Cause: Output signal invalid due to parameter setting, connection error or con󹪝guration error in the HW.
Measure: Check hardware con󹪝guration of the device over HMI or engineering system.
Out of speci󹪝ca‐
tion
3 Process value alarm 8
Cause: Deviations from permissible ambient or process conditions detected by the device (by means of self-monitoring or
based on warnings/errors in the device) indicate that the measured value is unreliable or that deviations from the set value in
the actuators are most likely greater than anticipated under normal operating conditions.
Process or ambient conditions can damage the device or result in unreliable results.
Measure: Check ambient temperature or process conditions. If possible, install device at di󹪜erent location.
Diagnostics and troubleshooting
11.1 Device status symbols
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
186 Operating Instructions, 05/2020, A5E41864807-AB