Samson TROVIS 3730-3, Руководство по эксплуатации

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124 EB 8389 EN
Appendix
Message Possible reasons Recommended action
Status
classifica -
tion Single reset
HART parameter (Code 74);
Types 3730-3/3731-3 only Error in HART
®
parameters not
critical to control operation.
Confirm error and change
parameter, if necessary.
•
[ ]
•
Options parameter
(Code 78)
Error in option parameters. Return positioner to
SAMSON for repair. •
[ ]
–
Diagnosis parameter
(Code 80)
Error in parameters not critical
to control operation. Confirm error. Perform new
reference test, if necessary.
•
[ ]
•
Diagnosis > Status messages > Extended
Air supply − The supply pressure has
changed.
− The supply pressure is
insufficient.
− The supply pressure is
working at full capacity.
Check supply pressure. •
[ ]
•
Section 4.6.2,
section 5.1.2
Shifting working range The working range has shifted
towards CLOSED or max.
OPEN position. Rethink the working range. •
[ ]
•
Section 4.3.2
Leakage pneumatics A leak in the pneumatics
exists. Check that pneumatic instal-
lations and connections are
tight. •
[ ]
•
Section 4.6.2,
section 5.1.2
Limit working range − The working range is limit-
ed at upper or lower range
value.
−
The valve has seized up
(no change possible).
− Check that pneumatic
installations and
connections are tight.
−
Check supply pressure.
− Check plug stem for
external influences that
could be blocking it.
•
[ ]
•
Section 4.4.2
Observing end position
−
Course of end position
monotonically increasing/
decreasing.
− Course of end position
alternates.
Check seat and plug. •
[ ]
•
Section 4.8.2
Connection positioner -
valve − No optimal travel transmis-
sion.
− The mechanical link is
loose.
−
The working range is limit-
ed.
Check attachment. •
[ ]
•
Section 4.4.2