GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual page 122

Problem
Valve response is too slow.
122 |
BHGE
Table 25 Troubleshooting Valve Control (Continued)
Presumed Cause
The control gain is insufficient.
If only the responses that
require air exhaust are slow, it
means that the regulator's max-
imum capacity is not large
enough.
The I/P module's nozzle has
become blocked from the air
supply.
The control relay has become
blocked from dirt contained in
the air supply or the like.
There's air leak from the pipe of
output pressure, or feedback
lever is not correctly attached.
Enabled Rate Limits settings.
Control block limits configura-
tion set improperly.
Remedy
Redo tuning.
Replace the regulator.
Check whether the Devia-
tion Alert Deviation Value is
out of specification. If it
does occur, contact the
nearest service station or
representative office.
Check whether or not an
error has occurred in
XD_ERROR in steady states.
Check the piping and
attachment of the lever
(and if changed), and write
1 to AUTOTUNE to redo tun-
ing.
Review Rate Limits and
adjust Position_Limits.Lim-
its_Right.Enable_Right.
This must be done by a
qualified valve technician.
Review and fix limits.
This must be done by a
qualified control engineer.
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
See Section
"Quick Start"
on page 31
"Transducer
Block Parame-
ters" on
page 149
—
"Transducer Block
Parameters" on
page 149
"Transducer Block
Parameters" on
page 149
"Installation"
on page 44
"Quick Start"
on page 31.
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