I have had many differant contradicting precautions that need to be taken when welding on machines containing electronic components and PLCs. These have come from welders, fitters and electricians but i would like to know from you electronic experts what are the dangers and why and how to weld in the knolwedge that you will not destroy anything.
I have heard the following -
remove PLC from panel
just switch PLC off
put earth clamp near to point off weld and dont do anything
etc etc
If you do put the earth return clamp near the weld and give it a good contact why would it try to travel through a PLC further away, is this because some componets have the 0v grounded, and when some people say disconnect a PLC, is the mains power and earth enougth or every input and output? If someone could give me some info on the this it would be greatly appreciated- i could not find much on the net.
I have heard the following -
remove PLC from panel
just switch PLC off
put earth clamp near to point off weld and dont do anything
etc etc
If you do put the earth return clamp near the weld and give it a good contact why would it try to travel through a PLC further away, is this because some componets have the 0v grounded, and when some people say disconnect a PLC, is the mains power and earth enougth or every input and output? If someone could give me some info on the this it would be greatly appreciated- i could not find much on the net.