Samson 3730 Series - Page 77

EB 8389-1S EN 77
Partial stroke test (PST)
Only when the ramp function is activated:
− Ramp time (decreasing) (Code 49 - d5):
0 to 9999 s, [600 s]
− Ramp time (increasing) (Code 49 - d6):
0 to 9999 s, [60 s]
2. − Max. test duration (Code 49 - E7):
30 to 25000 s, [90 s]
− Activate 'Max. breakaway time' [Yes], No
− Max. breakaway time: 0.0 to 25000 s,
[30.0s]
− Activate 'Perm. time until step end' [Yes], No
− Perm. time until step end:
0.0 to 25000 s, [70.0 s]
− Activate x monitoring (Code 49 - E0): [Yes],
No
− x monitoring value (Code 49 - E1):
–10.0 to 110.0 %, [ATO: 0.0 %; ATC: 85 %]
− Activate Δp out monitoring (Code49 - A8):
[Yes], No
− Δp out monitoring value (Code 49 - A9):
0.00 to 7.00bar, [1.00 bar]
− Activate PST tolerance band monitor-
ing(Code 49 - E5): Yes, [No]
− PST tolerance band (Code 49 - E6):
0.1 to 100.0 %, [5.0 %]
3.
Device settings > Alarm settings > Status
classication > PST/FST
− x cancelation: [
], , ,
− Δp out cancelation: [ ], , ,
− Tolerance band exceeded: [ ], , ,
− Max. test duration exceeded:
[
], , ,
− Test canceled manually: [ ], , ,
− Measured data memory full:
[ ], , ,
− Cancel internal solenoid valve/forced
venting: [ ], , ,
− Canceled by control loop error:
[ ], , ,
− Set point start difference too high:
[ ], , ,
− Set point change: [ ], , ,
− Current too low: [ ], , ,
− Max. breakaway time exceeded:
[ ], , ,
− Perm. time until step end exceeded:
[ ], , ,
− Canceled by supply pressure:
[ ], , ,
4.
Diagnostics > Monitoring/tests > Dynamic
tests > Partial stroke test (PST)
Either:
− Enter test start (Code 49 - A2) =
[Immediately]
− Start test
Or:
(only when 'Type of application' = On/off
valve)
− Enter test interval (Code 49 - A3):
[1 h] to 2345 d
− Enter test start (Code 49 - A2) = Time-
controlled
NOTICE! The positioner is write-protected
when tests are performed according to a
schedule (local operation and operating
software).
Code 0 reading: "O/C" and "PST" in
alternating sequence
Code 3 reading: "PST" blinks.