Samson 3730-3 - Design and Principle of Operation; Block Diagram

EB 8389 EN 17
Operation
Table1: Diagnostic functions and test analysis
Diagnostic
functions
Control
valve
Open/
Close
(on/off)
valve
1)
Analysis See section
Statistical information
Open/Close
1)
– •
Breakaway time
Transit time
Valve end position
4.1,
page27
Data logger
3), 5)
• • Depending on trigger status selected
4.2,
page31
Valve position x
histogram
•
¡
Shifting working range
Working range
4.3,
page37
Set point
deviation
histogram
• •
Limit working range
Connection positioner - valve
Inner (seat) leakage
Average set point deviation
4.4,
page40
Cycle counter
histogram
• •
Stufng box/external leakage
Dynamic stress factor
4.5,
page45
Drive signal
diagram steady-
state
•
¡
Air supply
Leakage pneumatics
Actuator springs
4.6,
page49
Drive signal
diagram
hysteresis
•
¡
Friction
1), 2), 3), 5)
External leakage perhaps soon
expected
4.7,
page53
Trend of travel
end position
• •
Observing end position
Zero shift
4.8,
page59
• Full scope of functions
¡ Function is performed, but not analyzed
– Function is not performed
1)
Not Type3730-4
2)
Not Type3730-5 (1.5x)
3)
Not Type3730-5 (1.6x)
4)
Not Type3731-3
5)
Not Type3731-5