So to check what Doug is saying. Lift the connections coming off point 2. That will eliminate line to line. But this will allow the control power to turn on the main contactor. If you lift line 2 connection and if it still trips you have a line to neutral problem.
I don't know what you have to test with or how comfortable you are testing something hot. I would disconnect all the grounds from any device while leaving the main power ground in place. Tape all ground wires. Once all other grounds are disconnected. Connect the power and turn on the key switch...
Let's look at ohms law. I=E/R. With the design as it is shown 120VAC / 2000 ohms is 60 mA. 10 times the 6 mA. To get to 6 mA it would be 20 kohms. I wouldn't do an e-stop like this. If the resistor opens the e-stop fails.
When you press an e-stop it shouldn't trip a breaker. It should only open the power circuit like a contactor. The key swich plus the e-stop are a series circuit. I agree you have a short between a power leg and a neutral.
Keep the wires as best as possible..use tie wraps to keep the wires down and in line with the device. Take the above and mark what pins are being used. I.e. gpio 17 pin 5 & common pin 10...just an example. I don't know what the pin numbers are. Taking time up front saves aggravation later. I...
When working with controls I start with the Control power. I want to test that all the boards that have a blinking light, blink. I would connect a cheater cord to power the supplies and make sure all power supplies put out the proper voltage, then connect the supplies to the proper terminal...
Depends if normal is AC or DC. I was talking about the DC connections. And yes you are correct for AC connection. But if you connect AC where DC should be the control board won't work ever again.
Cheers
Also I wanted to say that when running power, common and ground make power red wire, common black, and ground green. Then pick colors for signals and write them down or write the color on the schematic.
Rossbrau
I am looking at the post and you stated that a schematic is at the bottom of the post. What I am seeing is not an electrical schematic, it's a process diagram. If you post a real schematic maybe I can help. Also, not sure if you bought this panel or put it together yourself. The first...