eBay TB6560 Stepper Motor Driver Boards

[cleansurf2]

I've received my TB6560 and started bench testing for a 4 axis hotwire configuration. Looking at using Mach3 + Profili2 for the G-code.
I'm using Axis X, Y, Z, A, running Mach3 v3.042.
Problem is that two of the axis are really slow. I have swapped around the motors to prove there OK. So the problem is likely Mach3 config.
Mach3 was more complex than I expected, so far can't find the configuration problem (I''m an electronics Tech).

Anyone offer any advice or a config file to help out.

thanks
Rick

[irving2008]

I've received my TB6560 and started bench testing for a 4 axis hotwire configuration. Looking at using Mach3 + Profili2 for the G-code.
I'm using Axis X, Y, Z, A, running Mach3 v3.042.
Problem is that two of the axis are really slow. I have swapped around the motors to prove there OK. So the problem is likely Mach3 config.
Mach3 was more complex than I expected, so far can't find the configuration problem (I''m an electronics Tech).

Anyone offer any advice or a config file to help out.

thanks
Rick

Rick,

Define 'slow' .. do you mean they dont rotate at the same speed as the other channels with the same settings? I assume you've been through the 'motor tuning' process in the Mach3 tutorial?

[cleansurf2]

I have included the TB6560 Mach3 configuration file that came with my 4 axis board.

Purely bench testing at the moment, board and motors only on the bench.
While in Mach3, when I tab to get the manual controls, 2 axis are at least 100 times slower than the other channels. All the Mach3 motor tuning is set the same.

My board came from a seller that does a video of your board (as waranty proof) before he sends it out. I got the steppers from him also. It showed all 4 of my stepper motors on my board operating at the same revs.
One of his other videos walks me through basic setup, which I have followed. But essentially the config file loads up and I should be good to go, at least for bench testing motor spin.

He did mention, often DB25 cable configuration is a problem. I measured it out, all good, pin 1 to pin 1 etc, is correct. He also mentioned computer bios, will try and get time tonight to have a look. But as I can get 2 channels to operate fine, even when I swap motors around, I don't believe it to be a PC bios problem.

Still a confused newbie, sorry to be a pain guys.

[Jonathan]

I've just loaded your attached profile.
All the velocity / steps / acceleration settings are the same so I can't really see what might be causing it.

Are the slow motors missing steps? Try sending a slow motor one turn forwards then one back and check it returns to the same point. It might be that the driver board is 'missing' lots of the pulses making the motors go slow.

Try going to config->motor tuning and putting the velocity setting up for the slow motors and see if it makes a difference.