GE FVP110, Руководство по обслуживанию

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FVP 110 Fieldbus Valve Positioner Manual
60
GE Energy
Set Basic Parameters
Set the target mode's in the parameters MODE_BLK of the transducer block and AO
function block to O/S (Out of Service). When either one or both of the transducer block
and AO function block are in the O/S mode, the transducer block's parameters that
determine the valve actions are write-locked.
1. Select the acting direction of valve by setting the value, 1 or 2 in the parameter
ACT_FAIL_ACTION corresponding to the acting direction of the valve. This setting
determines the relationship between the pneumatic input signal and 0-100% of the
valve position, where the 0% position means complete closure.
❑
1
= air to open
❑
2
= air to close
NOTE
The 0-100% of the transducer block's output can be logically
reversed by setting IO_OPTS in the AO block to true.
Independently of the above setting, the FVP110 always acts identically on power off and
air supply cut-off. When a power failure or serious hardware damage is detected, the
FVP110 cuts the current signal being fed to the I/P module to zero, moving the valve to
the safe side. The action of the FVP110 on occurrence of a communication error can be
predefined by AO block’s parameters; see “Fault State” on page 135.
2. Select the actuator type by setting the value, 1 or 2, for the parameter VALVE_TYPE
for the actuator type:
❑
1 = linear-motion actuator
❑
2 = rotary-motion actuator
Choosing the linear-motion type automatically corrects a linearity error that is inherently
caused between the linearly acting actuator and the rotating displacement sensor inside
the FVP110 actuator.