Technical Specifications

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Failsafe Handling
Introduction
For the selected positioner, ValVueFF constantly monitors the status of the Transducer
Block (TB) actual valve position parameter FINAL POSITION VALUE to report and manage
Failsafe events. The actual status of Failsafe is determined by the parameter RELEASE
FAILSAFE in TB. To configure the Time 2 parameter to force Failsafe because of sustained
deviation, refer to “Configuration Services” on page 79. If the IVI is open, the Fail Safe
Status window automatically opens to display a Failsafe status. The window can be opened
manually from the View menu. Once the Fail Safe Status window is displayed it remains
open until you close it.
Failsafe Active Latched
The Fail Safe Status window (Figure 157) appears when the selected device is in Active
Latched condition.
Figure 157 Active Latched