The VIPER40 is an inverter-based Plasma cutting machine produced using the latest in IGBT technology. Low cost and portable thismachine is reliable, robust and stacked with features that you can expect from a quality Plasma Cutter. The CUT40 produces a high temperature plasma stream enabling effortless cutting of all electrically conductive materials including steel, cast Iron, stainless steel, copper, aluminium brass etc.
Connection of the CBR50 Plasma torch provides effortless starting of the cut with powerful, fast and accurate cutting capability, additional is the benefit of longer life cycle consumable electrodes and cutting tips. The contact start function allows the torch tip to be placed directly onto the work piece during start up and also during the cutting process helping to provide more accurate cutting and cleaner start of the cut. UNIMIG is pleased to offer a 1 year warranty on all Viper machine’s.UNIMIG offers warranty across Australia with four UNIMIG service centre’s in Sydney, Melbourne, Brisbane & Perth. We also have authorised service centres across Australia as well.UNIMIG’s focus is to assure the buyer is getting reliability, performance and peace of mind with a quality product.UNIMIG also offers an additional 6 months warranty free of charge when you register your product online via the UNIMIG website.Please note warranty only applies to the power source only. SPECIFICATIONS. Part NumberKUPJRVC40. Power Supply / Phases (V-Ph)240v - 1 +/- 15%.
The plasma cutter must also be grounded through the workpiece. There is a grounding clamp that must be connected to the workpiece, near where you are making your cut. This completes the circuit so that the cutter can create the charge it needs to melt away the metal. Make sure the connections on the ground clamp are good. Keep Air Pressure Up.
Duty Cycle @ 40°c25% @ 40Amps. Rated Power (KVA)7.50. Output Current Range (A) Plasma20-40.
Rated Output Voltage (V)310. Insulation ClassF. Protection ClassIP21S.
Plasma Arc StartingTouch. Air Flow Draw Off (l/min)170. Air Flow Pressure (Bar)5-6 (70-87 psi).
OK just managed to get 20 minutes in the garage.Run the plasma up with out covers and the HF unit is not running all the time, just on start-up and when the nozzle goes over a hole when you can hear the sort of juddering when it takes out the control gear.The power supply is a Lambda power supply as mentioned. A few pictures taken these are below and I also put back in my duff control board before I repair it. On the Y axis that still works when I move a stepper motor I get 25 Volts AC across the AP and AM connections and the same across the BP and BM windings. On a duff drive either X or Z axis I only get around 6 Volts AC.
OK update and close on this, had two issues on removing the earth from the frame and trying a cut. First was all axis just stopped, no noises or anything, screen still saying things were moving, so stopped and reboot without plasma and all worked again so the parallel port had locked.
Checked the parallel cable and found the connection plug to plug was 10 ohms not zero, so replaced that with my trusted Belkin cable and tried again.Partway through the job the Z axis stopped, with noises so I had blown the Z driver, but X and Y kept running to the end. The Z has been my worst axis for damage, I am guessing because it is holding the torch so closest to the high voltages all the time. It is also the one with the longest unprotected cable on the ends.So to keep the job going see if I lost any steps etc I manually lifted and dropped the Z axis. To the end.This was the result, but still an issue with the Z axis.But better then blowing all three repeatedly.I think before I do any more I need to obtain so more screened 4 core cable of a few amps, fit plug and sockets and some extra filtering to the leads, such as 1 nF HV caps at the motors down to screen and some end to end Zener Diodes with caps in the control unit to add more protection for the HF start voltages.
On the data sheet for the drivers it does say static sensitive!next step is to stop using my old Laptop but used a metal desktop PC, then I can also ground the case of that, just an issue with needing a screen and external keyboard and mouse etc. That is the issue.I will get there eventually, but it's a project!Adrian. I have done some more work on my problems blowing drivers, took a while as I had to wait for some components to arrive.I built up a board, using verostrip, with 12 sets of diodes back to back and some 1nF capacitors at 6KV rating.Each set of diodes has a cap across them and basically there is one for each wire going to X, Y and Z axis stepper motors. Each set goes down to the shield or ground on the CY cable.I was trying to get some 0.75mm csa cable but ended up with 1mm csa which would not go through the holes in the board so is all soldered on the reverse.