James42005
Member
I have been asked to make some changes to a start/stop station control logic. We have several sets of conveyors feeding one another. The first conveyor in the set, a merge table, occasionally has to be stopped. Currently the stop button(NOT ESTOP)at the merge table panel/op station is used to stop the merge table as well as all of the conveyors downstream. Operations has asked that the local machine stop button only stops the merge table.
I am fine with this since there is a global estop at the panel that stops the entire packaging room. However, i feel like having a stop button to stop all downstream equipment is still valuable. My idea is to program a hold delay to stop all downstream. So a momentary press of the stop button will stop the local machine(merge table), but a 3 second hold of the button will stop all downstream conveyors. Of course buttons would be field tagged as such.
I am just wondering if this is generally acceptable? Any rules, codes, standards against this? Just to reiterate, this is not affecting the safety circuit at all.
I am fine with this since there is a global estop at the panel that stops the entire packaging room. However, i feel like having a stop button to stop all downstream equipment is still valuable. My idea is to program a hold delay to stop all downstream. So a momentary press of the stop button will stop the local machine(merge table), but a 3 second hold of the button will stop all downstream conveyors. Of course buttons would be field tagged as such.
I am just wondering if this is generally acceptable? Any rules, codes, standards against this? Just to reiterate, this is not affecting the safety circuit at all.