configuration of TB6560 controller & variants

dab77 wrote:

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then, why don't you set current to max? in theory you could loose less steps.

time ago i found this discussion www.cnczone.com/forums/general_electroni...ixed_my_chinese.html
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In fact, reading again that discussion, they found that the power safe function it is bad implemented, so that at 100% current it loose more steps than 50% setting. It's also explained how to solve this.

hello, yes I did read almost that entire thread last summer when I was getting it going. Sorry I forgot to mention that I did cut a trace to one of the capacitors (1 per axis) and flipped the jumper on 2 of the opto-isolators (shorting them, because the board isn't designed right?). I was really only following the info in the thread, and fumbling my way through over the course of many days and hours of trial & error. It was a nightmare because you just don't know if it will ever work. When you are doing stuff that way, it's tough to know what the key move was. For me, I suspect it was shorting the correct optos and having these settings how I listed.
Before that, the 300oz/in. motors wouldn't do anything but hum. Then even when I got them moving, they would go and reverse direction (very little torque) after awhile or if you pushed against the carriage. Also they would only move at about 20 in/min, no slower or faster. I tried every step/dir # under the sun and when I stumbled across these settings it worked like magic. I also put in 50000 for max jitter, even though it was about12000 for this computer.
Another puzzling thing is that my board hates StepConf. I switched computers last week and just couldn't get the motors to do squat with my settings in stepconf. But when I just ran AXIS, the machine worked. This was happening to some degree last summer too. Could be my error.
Sorry I'm not an EE at all and my bad memory makes it worse. Just thought I could help someone by listing my empirical findings.
have a nice day!

garylogan wrote: Hi, I have the blue tb6560 3 axis and just wanted to add my settings because it took me a week of all nighters to get it running good. Maybe it can help someone else out:

Step time : 50000 ns
Step space: 1000
Dir Hold : 1000
Dir Setup : 50000
75% current
25% decay
1/2 step mode
max acc 15in ^2
max vel 1 in/sec

This is perfect!

I use the blue TB6560 3axis controller, too. With this values my machine is working very exactly at the first time.

Maybe someone of the LinuxCNC-developers can add this TB6560-configuration-values as a new machine profile in the next LinuxCNC-update.

Thanks.

Hi!
I recently bought the TB6560 driver aswell, but i can't seem to get it to work with the settings provided.
LinuxCNC crashes on startup if i use these settings. If needed i can propably provide the crash code(s) but is there a simple explanation why it won't work?
Everything works fine on MACH3 demo

Hi

pfefferhaxen wrote:

Maybe someone of the LinuxCNC-developers can add this TB6560-configuration-values as a new machine profile in the next LinuxCNC-update.

The problem with these boards is that there is no standard. What works for yours will not work for another board apparently the same

A lot of boards are sold as TB6560, but in typical Chinese style, some are probably rip offs of the originals and there are a number of pin-out variations.

IvarV wrote:

I recently bought the TB6560 driver aswell, but i can't seem to get it to work with the settings provided.
LinuxCNC crashes on startup if i use these settings. If needed i can propably provide the crash code(s) but is there a simple explanation why it won't work?

Search the forum with 'TB6560' in the search by keyword field and 'cncbasher' in the search by user name field.

He has built up a reluctant expertise with these boards (he hates them), there are links to wikis, sample configs, pin outs, manuals etc in the various posts

If you can't get going through these, then yes we will need the precise error messages etc.

regards

post your hal and ini files as an attachment and let us know what errors you have ,
or problem .