Samson 3730 Series Operating Instructions

EB 8389-1S EN 105
Appendix
Message Possible reasons Recommended action
Status
classication Single reset
Defective actuator
springs
− The actuator spring pre-loading
is reduced.
− Check actuator springs. •
[ ]
•
u Sec. 4.5
Supply pressure status − The supply pressure is outside
permissible limits.
− Check supply pressure. •
[ ]
•
u Sec. 4.5
− The supply pressure is too high. •
[ ]
− The supply pressure uctuates. •
[ ]
− The supply pressure is too low. •
[ ]
− No supply pressure is available. •
[ ]
Diagnostics > Monitoring > Valve position
Manipulated variable
range limitation
− The working range is limited at
upper or lower range value.
− The valve is jammed.
− Check that pneumatic installa-
tions and connections are tight.
− Check supply pressure.
− Check plug stem for external in
-
uences that could be blocking
it.
•
[ ]
•
u Sec. 7.2
Course of end position
− Course of end position mono-
tonically increasing/decreasing.
− The course of end position
alternates.
− Check seat and plug. •
[ ]
•
u
Sec. 10.2
Positioner-valve linkage − No optimal travel transmission.
− The working range is limited.
− Check attachment. •
[ ]
•
u Sec. 7.2
Manipulated variable
range
− The working range is mainly
close to the CLOSED/max.
OPEN position.
− The working range is mainly in
the CLOSED/max. OPEN
position.
− Rethink the working range. •
[ ]
•
u Sec. 6.2
Appendix

Samson 3730 Series Specifications

General

Brand	Samson
Model	3730 Series
Category	Valve Positioners
Language	English