Safety controller with safety response time monitoring

Details Safety controller with safety response time monitoring Safety controller with safety response time monitoring

2006-10-03

2006-10-03

Patel, Ramesh (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Having protection or reliability feature

C700S019000, C700S021000, C700S081000, C700S177000, C340S870110, C340S870150, C340S870160, C702S184000, C702S185000, C702S190000, C164S152000, C164S153000, C164S154100, C123S359000

Reexamination Certificate

active

07117048

ABSTRACT:
A safety controller having a total worst case propagation delay, exceeding the required propagation delay required by a safety process, may be used to control the safety process by monitoring actual delays in signal processing in the safety controller and moving to a safety state if a signal delay exceeds an amount less than the total worst case propagation delay.

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