Flowserve Logix 3800zb User Manual

Logix™ 3800zb Digital Positioner FCD AIIOM001030_EN 02/23
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Name
Description
Possible Solution
LED Color
Code
Tight Shut Off Mode
Also called MPC. The Final Command
is beyond the user set limit for the tight
shutoff feature and the positioner is
applying full actuator pressure to close
(or open) the valve. This is a normal
condition for all valves when closed.
The factory default setting triggers this
at command signals below 1%. This
indication may also occur on 3 way
valves at both ends of travel if the
upper Tight Shut Off value has been
set.
If tight shutoff is not desired reset
the tight shutoff limits or adjust the
command signal inside of the
specified Tight Shut Off values.
Valve Closed Too Far
Warning
While the valve was in use, it closed
farther than it did at the last calibration
by 0.5%.
Check the feedback arm linkage
and ensure the valve stem
connection is tight. Recalibrate the
stroke. If the process cannot be
interrupted a service technician may
be able to adjust the calibration.
Valve Cycles Warning
The valve cycle limit has been
exceeded. Each cycle represents two
reversals of the direction of valve
movement. The cycle counting criterion
and count limit are set by the user to
track the usage of the valve.
Follow routine procedures for
maintenance when the limit is
reached such as checking the
packing tightness, and checking
linkages for wear, misalignment,
and tightness. After maintenance,
reset the cycle accumulator.
Valve Opened Too Far
Warning
While the valve was in use, it opened
farther than it did at the last calibration
by 0.5%.
Check the feedback arm linkage
and ensure the valve stem
connection is tight. Recalibrate the
stroke. If the process cannot be
interrupted a service technician may
be able to adjust the calibration.
Valve Travel Warning
The total accumulated valve travel limit
has been exceeded. The travel is
accumulated in both directions. The
travel counting criterion and limit are
set by the user to track the usage of
the valve.
Follow routine procedures for
maintenance when the limit is
reached such as checking the
packing tightness, and checking
linkages for wear, misalignment,
and tightness. After maintenance,
reset the travel accumulator.

Flowserve Logix 3800zb Specifications

General

Brand	Flowserve
Model	Logix 3800zb
Category	Industrial Equipment
Language	English