300v error keeps happening

Software FireControl
1

It has been working good up until this cut. I started a cut and got a 300v error. I got several of them back to back. If I let my post flow air shut off it will cut and then give error. I have a everlast 62I hooked up raw voltage. Have 76 PSI when torch is on. I replaced solenoid and still getting the error. I can turn THC off and it will cut just fine. Have clamp clamped on material. I did the trouble shoot guide and narrowed it down to THC chip or MCB. Under flag 4 on guide. I am not getting any resistance between shell of USB and slat bed with ground clamped on. This is where I am struggling with. I can not seem to determine which is bad.

Any help is much appreciate

2

This usually means the electrode is stuck or something is preventing the electrode from blowing back to start the arc (low air pressure).

Forget about the THC and MCB for now. This is most likely a torch issue. Unplug the torch on/off cable from the control box and jump the outside of the connector to the inside with a wire. That should fire the torch independent from the electronics enclosure. If the torch still doesn’t fire, it’s the torch or the plasma cutter.

3

I used some silicone pray lube that Plasma George recommended me in the past to lube the plunger part on the torch head. Also put new consumables in it also.

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4

Check your air pressure and check to make sure the electrode moves freely when you push it in.

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5

I have 76 PSI when torch is on and it is constant. The electrode moves freely up and down

6

Do you have it hooked up raw through the CPC Port of the plasma cutter or hooked up raw by actually running wires into the unit and correcting it directly to the terminals?

THC module ( voltage input module) could be cooked.

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7

Both Everlast and PrimeWeld machines, I always hear that you should run directly from the machine’s actual lugs and never through the pinout for RAW.

8

So the torch actually fires and still shows 300v?

That could indicate that the VIM is bad.

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9

@AngryBearedGuy

In the time being maybe try to rehook up the CPC port for divided voltage and use the other side (divided side) of the VIM (voltage input module)

VIM Module Explained
VIM Module Explained1313Ă—863 98 KB

When I said THC module up above I was talking about the (voltage input module)

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10

I have it wired straight to the lugs on the machine.

I have it wired for the PV output now.

Will try the DIV when I get to the shop in a bit.

I was 16 ga metal and pierce set at .05. I can set my pierce to 1 and it will work like normal but burn a bigger hole on the pierce.

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Is that .05 a typo? It should be .5

12

.5 is correct

13

You can only get a 300 volt reading when the positive and negative make contact/short when the torch fires. Once their is a gap between the torch and the metal say .060” then the voltage will read 96 to 125 or something along those lines. Make sure your torch height is set correctly.

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14

Didn’t get a chance to make it to the shop yesterday after work. Will check today after I get home

15

I jumped the torch cable several times like you said. It fired every time for me.

16

I thought your problem was the torch not firing, since that’s the only time you would see 300v.

At this point, I’m not really sure I understand what your issue is.

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I was getting a 300V error at start of every cut. If I let the post flow air stop then I could restart it until next cut. I believe what Mechanic 416 said worked. I checked my gap on torch tip and it wasn’t at .063. I raised torch to get that gap and it cut just fine.

18

That makes more sense and sounds like an air solenoid issue in the plasma cutter. It’s a common issue with Everlast machines.

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