Resetting Single Status Messages; Step Response - Samson 3730-3 Operating Instructions Manual

Tests
5.4.4 Resetting single status
messages
The diagnostic parameters and measured
data analysis of the partial stroke test are re-
set by selecting and executing the command
'Reset PST'.
The positioner saves the measured data
analysis of the last three partial stroke tests.
The analysis of the penultimate test is deleted
when another test is performed.
Operation > Reset
− Reset PST
5.4.5

Step response

The dynamic performance of the control
valve can be tested by plotting its step re-
sponse.
The step response of the valve is recorded by
performing the partial stroke test with sud-
den changes in the valve position.
In addition, the following settings are recom-
mended:
− Deactivate all cancellation conditions of
the partial stroke test, providing the pro-
cess allows it.
− Start partial stroke test manually (PST
Man).
82 EB 8389 EN