FVP 110 Fieldbus Valve Positioner Manual
158
GE Energy
In practice, it performs PID computation based on the deviation between the setpoint set
in the actual mode and the PV, and generates a value of its output OUT so as to decrease
the deviation. The PID block works with other function blocks such as the AI and AO
blocks connected to it. The major functions of the PID block include (Figure 71):
❑
Filtering
❑
Setpoint limiters - both for the value and rate of change
❑
Scaling of process variable (PV), setpoint (SP), and output (OUT)
❑
PID control computation
❑
Control action bypass
❑
Feed-forward
❑
External-output tracking
❑
Measured-value tracking
❑
Output limiters
❑
Mode shedding upon computer failure
❑
Alarm generation
Figure 71
Function Diagram of PID Function Block
Modes
The target mode for the PID function block can be set from five block modes: ROut,
RCas, Cas, Auto, Man, and O/S. Regardless of the target mode, the PID block
automatically enters the IMan or LO mode when a specified condition is met (such as
when another function block enters a specific status), depending on the parameter
settings.
Summary of Contents for FVP110
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Page 97: ...81 Dimensions Standard Specifications Dimensions Figure 46 Single Acting Actuator Dimensions ...
Page 99: ...83 Dimensions Standard Specifications Figure 48 Terminal Configuration ...
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Page 115: ...99 View Object Configuration Table 11 View Object for Transducer Block continued ...
Page 117: ...101 View Object Configuration Table 18 View Object for AO Function Block ...
Page 119: ...103 View Object Configuration Table 20 View Object for OS Function Block ...
Page 121: ...105 View Object Configuration Table 22 View Object for Resource Block ...
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Page 238: ...FVP 110 Fieldbus Valve Positioner Manual 222 GE Energy Table 72 LM Parameter Part List ...
Page 239: ...223 LM Parameter List Link Master Functions ...
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Page 265: ...249 Comments on System Network Software Download Table 88 DOMAIN_DESCRIPTOR ...
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Page 289: ...273 H Customer Maintenance Parts List ...
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