This is related to industrial installations. Let's say we have multiple pieces of equipment for a process. This process equipment has an E-stop circuit associated with it. Are there special requirements related to the equipment used in that E-stop circuit?
Does it need to be designed such that a single point of failure will not prevent the system from working? For example, if we use a relay or contactor to interrupt power, the contacts could have welded shut and then the E-stop would not do anything.
Do the components of that system need to be monitored such that a failure of a component would be detected?
Does it need to be designed such that a single point of failure will not prevent the system from working? For example, if we use a relay or contactor to interrupt power, the contacts could have welded shut and then the E-stop would not do anything.
Do the components of that system need to be monitored such that a failure of a component would be detected?