Brother HS-300 Cutting Problem

[DDesign]

Hi All,

Having wire breakage with spark energy set to anything above 2. Wire breaks after the first few sparks regardless of settings and the sparking doesn't sound normal. I measured the clamp voltage when it was cutting at spark energy 2 and it was hovering around 62V which seems low. Saw a similar thread from a guy on this forum with an HS-350 but never saw a resolution. Hoping someone can offer a few clues or experience. Thank you.

 

[BadTad]

What are your other settings?

 

[DDesign]

What are your other settings?

I've tried various combinations and the result is the same, wire breaks after a few arcs with seconds of delay in between sparks. Last settings were Spark energy = 3, Spark rate = 15, Wire Feed = 6, Tension = 6, can't recall others. I've recently noticed that LED#3 on the sub-discharge pcb is lit when running(circled in pic below) According to the service manual it means main discharge is prohibited. I don't know if it goes out once it clamps though. Also have a new issue(possibly related?) now that the machine stops without any alarms or wire breaks. I saw in another post that you're thinking of selling yours. I may be interested. I'll PM you on that.

 

[BadTad]

May I ask what you are cutting (material, thickness) and your flushing/submerged conditions, water readings?

 

[DDesign]

Cutting 1/4" 304SS, submerged with lower and upper flushing set to 6/7. Water cond 3-4, i've tried from 1-5 with no change. Curious if LED#3 on the sub discharge pcb is illuminated on yours before it's cutting and afterwards.