GE Valve Software Tools MN-Valvue-FF-IOM Service Manual Page 137

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Simulation Function
PID Block and Trending
Simulation Function
The simulation state is allowed only for training privilege level 8.
ValVueFF provides a special function for testing and training. You can connect the valve
position to the input of the PID with lag of 5 seconds to allow demonstration of closed
loop control.
CAUTION Never use the simulation state if the valve is connected in a
control loop or if the valve is controlling process flow. The
Simulation State permanently removes important control
loop information from the FVP valve positioner. The soft
wired connection between the PID function block and the
input function block must be restored after simulation is
used. Reconfigure function block links after using simulate.
The Clear Device command must be used when
downloading a restored configuration.
In this state the control valve position readback signal is fed back into the PID input with
a 5 seconds filter time. This forms a closed loop to simulate a process loop. The PID
block is in AUTO mode. This is not the same as the Foundation Fieldbus SIMULATE
parameter.
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