Samson 3730 Series - Page 104

104 EB 8389-1S EN
Appendix
Message Possible reasons Recommended action
Status
classication Single reset
Transit time not reached
(Code55)
Actuator transit times detected dur-
ing initialization are so short
(<0.3s) t
hat optimal positioner tun-
ing is impossible.
− Activate volume restriction in
positioner output.
− Re-initialize positioner.
•
[ ]
•
Pin/switch position
(Code 56)
Pin position not entered for nominal
range (NOM) or substitute (SUB) ini
-
tialization.
− Enter pin position and nominal
range.
− Re-initialize positioner.
•
[ ]
•
ATO/ATC switch defective. Return positioner to SAMSON for
repair.
No emergency mode
(Code 76)
Positioner detected during initializa
-
tion that actuator permits no emer-
gency control mode without feed-
back. In case of a travel sensing er-
ror, positioner vents Output or A1 in
double-act
ing actuators.
For your information only. No fur-
ther action required.
•
[ ]
–
Valve signature canceled
(Code 81)
Error while recording valve
signature. Refer to section
Restart the valve signature record-
ing or start initialization including
valve signatur
e.
•
[ ]
–
Diagnostics > Monitoring > Valve
Change in friction − The friction is higher/lower in
total range
− The friction is higher/lower in
valve's mid-position.
− The friction is higher/lower near
valve's max. OPEN position.
− The friction is higher/lower near
valve's CLOSED position.
− Check the valve's packing. •
[ ]
•
Seat leakage − Alarm limit 2 or 3 exceeded. − Check seat and plug. •
[ ]
•
u Sec.
9.1.2.4
− Seat leakage may exist. •
u Sec. 7.2
Packing leakage − Packing leakage is possibly to
be expected soon.
− Check the valve's packing. •
[ ]
•
u Sec. 8.2
Total valve travel exceed-
ed
− 'Absolute total valve travel' ex-
ceeded 'Total valve travel limit'.
•
[ ]
–
Diagnostics > Monitoring > Actuator
Pneumatic leakage − A leak in the pneumatics exists. − Check that pneumatic installa-
tions and connections are tight.
•
[ ]
–
Appendix