Siemens SITRANS VP300, Руководство по эксплуатации

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Alarm, error, and status messages
8.2 Status messages
SITRANS VP300 with or without HART
Operating Instructions, 03/2011, A5E01258666-03
147
Icon Error message Causes/Corrective actions
The average position value has been exceeded/fallen below.
Possible causes:

It is possible that the process or valve conditions have changed.

During the last comparison interval, the valve trajectory has changed to the degree
that a deviating average position value has been calculated.

Deposits in the piping, if average position value exceeded.

Valve seat or valve plug wear, if average position value fallen below.

This applies analogously to valves that close upward.
Check the process and valve immediately. Evaluate the position trend data. The
error message disappears when the result of an average position value calculation
following a comparison interval is again within the thresholds with respect to the
reference position value , or if the function is deactivated.
"3.6.7 Average position value" (Page 113)
Check the process and valve promptly.
Differ from position
average
Indicates an error in the process or a faulty valve.
Permissible device temperature fallen below/exceeded. Note: "nn" stands for the actual
temperature measurement.
Check the ambient temperature and the device function immediately. Control function
failure is possible. Check ambient conditions, temperature, and trend.
The error message disappears if the temperature returns to the permissible range, or if
the function is deactivated.
"3.6.8 Lower limit temperature" (Page 117) , "3.6.9 Upper limit temperature" (Page 118)
, and "3.7.2 Trends" (Page 121)
Check the ambient temperature promptly.
Temperature "nn"
°C/°F
Indicates an ambient temperature that is too high or too low.
PST failed Threshold for stroke time is exceeded. Possible causes:
 The valve was not moved in accordance with the PST reference period.

Valve is stuck or rusted, increased friction.
Check the condition of the valve and actuator for mobility immediately.
The error message disappears if a partial stroke test is successfully completed within
the reference stroke time, or if the function is disabled.
"3.5 Partial stroke test (PST)" (Page 96)
Electronics defect A malfunction in the electronics has been detected. Possible causes:

Component defect
 Erroneous calibration
Send the device to the repair center.