Masoneilan SVI FF Instruction Manual
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© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
The valve’s full stroke is
insufficient for the setpoint
input (An accumulated
value of 100% travel = 1
stroke. The travel does
not need to occur in one
movement.):
The air supply pressure is not
high enough to drive the valve
actuator.
Check the air supply pres-
sure rating for the valve
actuator and supply air at
the correct pressure, and
redo Find Stops and the
redo Auto Tuning.
“Connecting
the Tubing and
Air Supply” on
page 62
“Quick Start”
on page 31.
The range of the setpoint is lim-
ited by software.
Change the position limits.
“Transducer Block
Parameters” on
page 149
The steady state deviation
between the setpoint and
readback position exceeds
specifications.
The tight-shut or full-open
action is active.
Check the values of
FINAL_VALUE_CUTOFF_HI
and FINAL_VALUE_CUT-
OFF_LO.
“Transducer Block
Parameters” on
page 149
The tuning has not been per-
formed correctly.
Redo tuning to perform 0 &
100% point adjustment.
Tuning is incorrect.
Run tuning.
The valve oscillates
cyclically (limit cycle).
The friction of packing is large.
1)Repair packing.
2. Redo auto tuning.
1. Contact manu-
facturer.
2. “Quick Start” on
page 31.
There’s an air leak from the out-
put pressure pipe, or the feed-
back lever is not correctly
attached.
Check the piping and
attachment of the lever, and
redo Auto Tuning.
“Installation”
on page 44
“Quick Start”
on page 31.
Process condition is unstable.
Review the process set-
point/tuning.
Lever/linkage connection prob-
lem.
Verify linkage operation.
Table 25 Troubleshooting Valve Control (Continued)
Problem
Presumed Cause
Remedy
See Section
Содержание Baker Hughes Masoneilan SVI FF
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