GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual page 124

Problem
Autotune doesn't complete
124 |
BHGE
Table 26 Troubleshooting Auto Tuning (Continued)
Presumed Cause
Feedback slipping, loose.
Rotary installation: magnet
assembly rotates using hands.
Reciprocating bracket: the turn-
buckle, rod-end, and take off
arm aren't secured.
Magnet far away from housing.
face of the
Rotary installation: the
magnet holder isn't flush with
the face of the mounting
bracket.
Cannot be recessed by more
than 1/8"
High friction, sticking, slipping.
more than
The friction measured is
30% of the spring force or the
valve is visibly jumping around
the
setpoint.
Remedy
Secure all set screws and
locking nuts.
Check reciprocating assem-
bling for binding during
operation.
In general, Autotune may
fail if the valve is too slow -
in this case manually tune.
Loosen up the set screws
holding the magnet assem-
bly in the magnet holder
and pull the magnet so it is
flush with the mounting
bracket.
In general, Autotune may
fail if the valve is too slow -
in this case manually tune.
Aggres-
Run Autotune with
siveness settings of 2 or 4,
or, proceed to manually
tune the SVI FF ensuring the
Integral Gain (I) is set to a
minimum of 100.
In general, Autotune may
fail if the valve is too slow -
in this case manually tune.
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
See Section
"Installation" on
page 44.