FVP 110 Fieldbus Valve Positioner Manual
62
GE Energy
The tuning result are written to AUTO_TUNE_RESULT. The value of
AUTO_TUNE_RESULT is 255 and appears as
In operation
while auto tuning is
running, and changes to
1
which appears as
Succeeded
when auto tuning has
finished successfully. 2 indicates cancelled. In the event of a warning or error, a value
other than those above appears. For details, see the specifications for the transducer
block.
The values of the hysteresis of valve actions and the air supply pressure measured
during auto tuning are stored in parameters of the FVP110. transducer block. The
pressure data such as air supply pressure data are available only for a FVP110 with
an optional pressure sensor.
CAUTION
Ensure that the pressure of the air supply to the FVP110
positioner is regulated within the specified range. If it differs
from the pressure during actual operation, or if it is unstable,
optimum tuning results may not be obtained.
The following parameters are tuned by carrying out auto tuning: (For details, see
“Description of Control Parameters” on page 259):
❑
SERVO_GAIN (static loop gain of internal valve control loop)
❑
SERVO_RESET (integral time)
❑
SERVO_RATE (derivative time)
❑
SERVO_RATE_GAIN (derivative gain)
❑
SERVO_DEADBAND (dead band of integral action)
❑
SERVO_OFFSET (offset of integral action)
❑
BOOST_ON_THRESHOLD (threshold to switch on the boost action)
❑
BOOST_OFF_THRESHOLD (threshold to switch off the boost action)
❑
BOOST_VALUE
❑
SERVO_I_SLEEP_LMT (timer setting for integral action)
❑
SERVO_P_ALPHA (multiplication coefficient for the square of proportional factor)
❑
INTERNAL_GAIN (total gain of I/P module, control relay and the valve)
❑
X_BST_ON_THRESHOLD * (the addition value to threshold for switching on boost
action for exhaust.)
❑
X_BST_OFF_THRESHOLD * (the addition value to threshold for switching off
boost action for exhaust)
❑
X_BOOST_VALUE * (the addition boost value for exhaust)
*Applicable only for Double Acting Type
Содержание FVP110
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Страница 97: ...81 Dimensions Standard Specifications Dimensions Figure 46 Single Acting Actuator Dimensions ...
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Страница 265: ...249 Comments on System Network Software Download Table 88 DOMAIN_DESCRIPTOR ...
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Страница 268: ...FVP 110 Fieldbus Valve Positioner Manual 252 GE Energy Figure 84 Checking Position at Which Clamp Should Be Fixed ...
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