GE FVP110, Maintenance Manual

Page: 196 / 292

FVP 110 Fieldbus Valve Positioner Manual
180
GE Energy
Valve responses are too
slow. If only the responses that
require air suction are slow, it
means that the regulator’s
maximum capacity is large
enough. Replace the regulator. —
The I/P module’s nozzle has
become blocked from dirt
contained in the air supply or
the like. Check whether or not error
114 or 122 occurs in
XD_ERROR in steady
states. If it does occur,
contact the nearest
service station or
representative office. “XD_ERROR” on
page 129
The control relay’s nozzle has
become blocked from dirt
contained in the air supply or
the like. Check whether or not error
114 or 122 occurs in
XD_ERROR in steady
states. “XD_ERROR” on
page 129
The control gain is insufficient. Write 4 or 3 to
AUTO_TUNE_EXEC to
redo auto tuning. Or,
increase the
SERVO_GAIN setting.
❑ “Carrying out
Tuning” on
page 61
❑ “Control
Parameters”
on page 132
❑ “Function
Block Parame-
ters” on
page 183
❑ “Manual Tun-
ing Guideline”
on page 253
There’s air leak from the pipe
of output pressure, or
feedback lever is not correctly
attached. Check the piping and
attachment of the lever,
and write 4 or 3 to
AUTO_TUNE_EXEC to
redo autotuning.
❑ “Installing the
FVP110 on the
Actuator” on
page 35
❑ “Carrying out
Tuning” on
page 615.3
The pressure balance
deviation is too large. Adjust the pressure
balance of control relay. “Tuning the
Pressure Balance
of Control Relay”
on page 71
Table 57 Troubleshooting Valve Control (Continued)
Problem Presumed Cause Remedy See Section