Technical Specifications

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Diagnostics Tab
Diagnostics Tab
From the Diagnostic tab you can run response time tests, step response tests, and positioner
signatures.
Figure 12 Diagnostics Tab
Fields
Continuous Diagnostic Values :
Strokes, Cycles, Time Open,
Time Closed, Time Near
Closed
Displays the continuous diagnostic data including number of full strokes
the valve has made, the number
of cycles (direction changes), the time
the valve has spent open, the time the valve has been closed, and the
time the valve has spent throttling near the seat.
Diagnostic Tests
Diagnostic Types: Response
Test, Step Test, Positioner
Signature
The SVI allows four diagnostic tests to be performed: Standard actuator
signature, Step Response
test, Extended actuator signature test, and Posi-
tione
r Signatur e test. The test to be performed is selected in this selec-
tion
box.
Diagnostic Parameters: Start
Position, Stop Position,
Time
The parameters needed by the diagnostic tests are dependent upon which
test is
selected: