SYSTEM FOR SETTING A POSITIONING MEMBER
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United States of America Patent
Stats
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N/A
Issued Date -
Feb 11, 2010
app pub date -
Aug 5, 2009
filing date -
Aug 8, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a system or method for setting a positioning member, a pneumatic positioning drive actuates the positioning member, the pneumatic positioning drive having at least two control positions and a predetermined safety position. A position controller is pneumatically coupled to the positioning drive. A basic process control system generates and transmits a set-point signal for the positioning member. A safety controller generates and transmits a safety signal with which the pneumatic positioning drive is vented causing the positioning member to automatically move into the predetermined safety position. The basic process control system and the safety controller are coupled with respect to signal transmission in such a way that the set-point signal generated by the basic process control system is transmitted via the safety controller and a signal transmission path coupling the position controller with the safety controller.
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