Samson 3730-3 - Mounting the Position Sensor to Type 3510 Micro-flow Valve

74 EB 8389 EN
Start conditions PST with application type = 'Control valve'
Operating mode
â
â â â
SAFE AUTO MAN
â
PST mode
â â
PST Man PST Auto
â â â â
PST not possible PST not possible
PST
1, 3)
possible
PST
1, 2, 3)
possible
â â â â
Fail-safe action of actuator
(fail-safe position
operating mode)
Operating point/valve position according to set point
1)
PST starts once
2)
PST starts once by setting 'Auto test time'
3)
PST starts over binary input
4)
PST starts once over set point w (see section4.1)
Tests – Partial stroke test (PST)