I keep seeing posts saying that you can ‘read from controller’ under the additional settings tab but doesn’t appear to be an option for my galvo fiber laser… But the preview time is WAY off (says like 1hr when it’s only 3 min). Any way to correct/adjust this?
Increase the max x/y speed in that window to your galvos max. 4000+ mm/sec.
Edit: and rapid speeds
Did you import the configuration file supplied by your manufacturer?
This should get you better values. These look like gantry machine values, way slower than a normal galvo which are usually in the meter/second range.
I didn’t get a config file with my laser… I started with LB and that’s all I used
where would I find my galvo’s max?
From the manufacturer, but given the parameters are only for simulation you can put in any figure. Once it’s higher than the max speed you use, the preview time ought to be more accurate
1 Like
Did you build your own fiber? These usually come with a file such as markcfg7 that sets these. If you didn’t import it during the device configuration, these will be way off.
1 Like
No I didn’t build my own I have one from lasersonly… I did have a jump drive that came with it but not sure what I did with it as that was over a year ago.
wouldn’t the acceleration be the ‘jump speed’ timing number? I’m just not sure how to figure out my max speed and other numbers.
But for instance, in the above pic the max speed is 500 for x and 400 for y. But in my file I’m annealing at a max of 300mm/s. So shouldn’t it be accurate then since it’s set above what I’m actually engraving at?
Oz had posted something similar to these settings at one point long ago, which may help get estimates closer on a galvo machine:
1 Like
Thanks Steve, that does seem to make it MUCH more accurate. I will start with those numbers and adjust from there.
1 Like
If you can find any documentation on the type of galvo you have, they usually tell you these values.
Mine will only scan at 4m/s, not at the 15m/s as was posted.
Since a galvo’s limits are not really how fast the dot moves but rather how fast the twiddly bits inside can rotate, I suppose I’d have to scale my best-fit numbers based on the lens, right?
A “full-range” deflection, one side to the other, should take the same time regardless of the lens that comes after the galvos, but the distance that moves across the workspace is quite different – four times as far with my 300x300mm vs my 75x75mm.
The software knows the lens length, this allows it to translate mirror movement to actual surface speed.