The Plc Kid
Member
Ok
So this may sound wild but we have a bunch of idiots here who can never seem to plug a theremocouple into the correct jack.
On each line there is a extrusion dies that has about 12-20 zones and a TC for each zone. When we replace a TC we put a brass tag on it with the corresponding zone number on the tag.
Somehow they still plug them into the wrong jack and the jacks are numbered by zone also BTW.
When this happens they are not getting the correct reading for that zone which in most cases cause the zone that is being controlled to overheat and wharped dies and all kinds of stuff.
On the lines that have plc controlled zones i limit the setpoint and i limit the output. I also look at the feedback reading and if it is out of range i stut that zone down this saves the equipment but maintenance is still called out to finf the problem and most of the time it is just that they have it plugged into the wrong place.
So now to my question does anyone know of a company that makes some kind of keyed thermocouple plugs and connectors so that the idiots can not physically plug the TC into the wrong port?
If it will not go in on the first couple of tries then maybe they will look at the tag?
Any other suggestions or methods are welcome. This is something the plant manager and Maintenance manager wanted me to research as it is about 30% of our reative work orders dealing with heater related problems. Of that 30% i would say half is related to incorrect TC Connections.
Thanks
Da Kid
So this may sound wild but we have a bunch of idiots here who can never seem to plug a theremocouple into the correct jack.
On each line there is a extrusion dies that has about 12-20 zones and a TC for each zone. When we replace a TC we put a brass tag on it with the corresponding zone number on the tag.
Somehow they still plug them into the wrong jack and the jacks are numbered by zone also BTW.
When this happens they are not getting the correct reading for that zone which in most cases cause the zone that is being controlled to overheat and wharped dies and all kinds of stuff.
On the lines that have plc controlled zones i limit the setpoint and i limit the output. I also look at the feedback reading and if it is out of range i stut that zone down this saves the equipment but maintenance is still called out to finf the problem and most of the time it is just that they have it plugged into the wrong place.
So now to my question does anyone know of a company that makes some kind of keyed thermocouple plugs and connectors so that the idiots can not physically plug the TC into the wrong port?
If it will not go in on the first couple of tries then maybe they will look at the tag?
Any other suggestions or methods are welcome. This is something the plant manager and Maintenance manager wanted me to research as it is about 30% of our reative work orders dealing with heater related problems. Of that 30% i would say half is related to incorrect TC Connections.
Thanks
Da Kid