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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Posted to rec.crafts.metalworking,sci.engr.joining.welding
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Hobart CyberTig 200 DCS question
I have a Hobart CyberTig 200 DC-S welder. It is a 3 phase 200 A rated
SCR fired, transformer based TIG welder. I have a PCTI's 3 phase firing circuit that is made to control any SCR fired, transformer based, 6 SCR power supply, by specifying current and voltage with potentiometers. It is shown he http://www.pcti.com/3phfiring.htm It appears to be very straightforward to wire it (I have a manual). What I would like to use it for is to convert it to a both CC as well as CV operation so that I could use it as a TIG/Stick or MIG welder. The nice thing is that, it seems, it can be wired without disturbing too much in the welder. All I need to do is unplug the current Programmer controller, add some piggy back terminals, and connect this circuit in. I would start with a simple control for CC and then expand a little bit by making it control valves, HF and switch from CC to CV. (CC is set by specifying max voltage as OCV and controlling current with a pot, whereas CV is set by specifying max current and controlling max voltage with a pot). My question for now is this: Is this CyberTig actually a 300 A, 60% duty cycle welder, controlled to run at no more than 200 amps, or is it really a 200A max welder. It is specified to have 100% duty cycle at 200A. i |
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