Generate alarm based on slope of cooling trend not set point
Generate alarm based on slope of cooling trend not set point
(OP)
I would like to have Rockwell FactoryTalk produce an alarm as product temperature starts to reach its minimum temperature based on a cooling curve rather than a minimum temperature. For instance, as the slope of the cooling trend as averaged over a certain period of time reaches a particular value, Factory Talk will produce an alarm. I am not an engineer and I don't know ladder logic. All I have is a concept I think makes sense for our operation and I would like to know if it can be done. I do know my way around FactoryTalk a little, so if it was just a matter of doing something at HMI level rather than PLC level, I could probably follow instructions well enough. Can anyone point me in the right direction?
AB ControlLogix 1756 & Rockwell FactoryTalk View Site Edition (to be upgraded).
AB ControlLogix 1756 & Rockwell FactoryTalk View Site Edition (to be upgraded).
RE: Generate alarm based on slope of cooling trend not set point
But that's on the controller end, not the HMI end.
I'd recommend you search the FactoryTalk documentation for a rate of change alarm. If it doesn't have it, I strongly suspect CLX has the equivalent function block which could be implemented on the hardware side. Or you could write your own code.