Brother TC-225 / TC-229 adventure!

Ok I'm wrong about perceived smoothness. On the x I can feel each bum in velocity.

So... noisy analogue then?

Stock cable is ribbon no shield as it turns out. Maybe I should untwist that analogue wires.

I shortened my extension to just an inch or 2. No twisting. It seems not to have changed anything much . Maybe it's grounding.

Hmm

Maybe it did do something...

76ipm jog. Lower is encoder velocity. It looks a lot more controlled. The resonance looks like tuning vs random. During stable parts of the move it's tracking to a tenth or so.

Heres where we ended up on the x. A short over / under shoot then smooth tracking within a few encoder counts.

At very low speeds it's more lumpy.

It's much better than it was. But think we must be able to clean up the acceleration error a bit..... or maybe with no jerk control it's going to be limited.

I'm shorten the remaining cables tomorrow and see where we end up.

When your made your patch connection, did you connect the shielding of the old cable to ground? The old cables shielding may have been connected to ground at the old control. If that was the case you probably need to restore that ground connection. Also check to be sure you haven't created any ground loops with your new cabling.

ihavenofish wrote: Heres where we ended up on the x. A short over / under shoot then smooth tracking within a few encoder counts.

At very low speeds it's more lumpy.

It's much better than it was. But think we must be able to clean up the acceleration error a bit..... or maybe with no jerk control it's going to be limited.

I'm shorten the remaining cables tomorrow and see where we end up.

If the old control had jerk limiting, I don't think you will be able to use acceleration rates as high as the old control used. (My guess, probably about 1/2-2/3 as much.)