Tg-201

[minzaracer]

I’m looking for info on a Hobart TG-201 tig plug wiring schematic. Any help would be appreciated.

[Dale M.]

Welcome aboard.....

Did you try looking here for manual on your machine....

https://www.hobartwelders.com/support/manuals-and-parts

Dale

[MAC702]

Plug wiring? Without even knowing that model, is there a reason to suspect it will different than any other welder? Can you tell us what you have and are trying to do with it? A pic would just be a bonus.

[minzaracer]

According to the manual there is a 5 pin plug that goes where the foot pedal plugs in to the welder. I accidentally broke the wires in the plug that goes to the tig pedal assy. Thinking the plug separated. According to forums on the internet the plug lets the welder stick weld and you remove it and attach the foot pedal to tig weld. I’m needing to make a plug for the bypass and I’m also needing to rewire the foot pedal plug.

[minzaracer]

[Dale M.]

If plug is standard amphenol, find part number (spec number on plug) and order new one from someplace Allied Electonics.... Can't help with wiring though as I am not familiar with your welder.....

Dalel

[Hobart Expert Keith]

A and B are the remote on/off switch, C, D and E are the remote rheostat. E high, D wiper and C low(common).

[minzaracer]

Thanks , I’m still needing a schematic for making a bypass plug.

[minzaracer]

When crossing over pins A&B it causes the welder to trip the breaker.

[Hobart Expert Keith]

What size service breaker do you have?

[minzaracer]

It’s 50 amp. It’s more like the welder is fighting itself.

[Hobart Expert Keith]

When you close A and B you are energizing a contactor that applies power to the main power transformer. Does it do it whether you are in AC as well as DC output?

[minzaracer]

Yes when A&B are crossed

[Hobart Expert Keith]

OK, after looking at the unit a little closer the main diodes are across the main transformer secondary prior to the polarity switch. Since that is the case, isolate the main diodes on the output rectifier and see if one of them or more are shorted.