60W Laser tube - Power issues - Full power at 40%

[boszczowski (Felipe Boszczowski)]

Hello, I have a TL-A1 controller on 60W tube laser machine.
First of all, in the first month I had an issue of small shocks on every pulse and I found out that the seller made a bad wiring. After that, I am having issues to set the power. If I set 40% on LB or in the controller, the tube fires 100% of its power (I can see on the amperimeter).

I thought that the problem was the power supply and the seller sent me a new one. After wiring this issue continues and I don’t know what could be causing this.

On the firts day that this machine arrived I made a power scale test and all was working just fine.
Now at 25% the power is equal to 50% of tube’s power and 40% its reach 100%.

The amperimeter is showing 22ma at 40% and 100%. At 25% it is at 14ma.

Any clues?
Thanks

[JohnJohn (John Johnson)]

@boszczowski

Any clues?

I think we need more clues.

For this Topwisdom TL-A1, how was it incorrectly wired on delivery and how is it currently wired.

What information can you share about the high voltage Laser Power Supply (LPS)?

[jkwilborn (Jack Wilborn)]

A simple resolution to determine if it’s the controller or the lps.

With a voltmeter, measure the pwm signal to the lps… if it’s constant and the tube current changes it’s the lps/tube…

[boszczowski (Felipe Boszczowski)]

Sorry about this delay response.

@boszczowski

I found out that the seller made a bad wiring

Now I see that I made a bad writing here, i’m sorry. I meant that some wires was loose, like the earth grounding and other cables.

@jkwilborn

With a voltmeter, measure the pwm signal to the lps… if it’s constant and the tube current changes it’s the lps/tube…

My multimeter is broken right now, but I found out the problem (I think).

When the sorts happend, my controller blinked sometimes and freezed. The controller was reseted and some configurations was changed. I had to set again the Laser Setting Tabs and all working now as suposed to.

Thanks guys.