This plc which is a DL suffix inputs are all high. Measuring from inputs to 24vdc+ 1.5k ohm resistance.I need
inputs to be all low then pull high when activated . What i want to know is there a switch jumper inside the unit I can switch it.
The keypad and sensor switches that go to the...
What is this type of adjustable plate or design called?
Doughttps://files.engineering.com/getfile.aspx?folder=3daee42f-406b-437b-92aa-cce61a370adc&file=20191122_185433.jpg
I hook up an external power supply to B+ primary supply ( 20v only supply on hand)and a variable supply to 10k resistor that feeds the little vertical board . Brought the supply to the up to 16v and unit started working. remove the 16v supply and unit still ran. 5v and 24v on the outputs.tested...
the name on it is international power source doing web search and ebay searches pup series has the names Power Box,Tumber technologies, trump power...its a switch mode supply output 5v 3a and 24v 1 amp..everything on the board lookgood caps no swelling,leaking,nothing burnt..driver transistor...
I don't think it has a problem.I don't know what type of thermocouple it uses, Type C ( which I had at home) didn't get me the correct readings.When I took the unit out of its'mounting holder it appears it may have a compensating resistor off the back off the pcb.
This is for a personal project...
