Brother TC-225 / TC-229 adventure!

oh, i think i see what yer saying. ill try these things tonight.

thanks.

Bias does nothing at all useful. Ff2 clamps error to below .001 but resonance is there still.

To be useful as a counterbalance, bias must be used with torque mode drives
(so the bias is in the proper units, force in this case)

You might also improve tuning a bit by tuning the drives velocity loop

That makes sense. There's nothing on the drive I can see to tune... It's of course fine on the old control. There is no documentation of any kind for it.

Right now it's basically tracking well but with intermittent resonance above 100ipm or so

Thanks

ok I lied, theres some pots on the drive for speed, gain, and offset. I reaaaaly don't want to touch them as they are fine with the old control (which I'm not fully letting go of yet).

question: will the servo period affect tuning? as in, is faster better or worse, etc. I had it as 2khz, now its at 1khz. it seems to "feel' better, but it may be in my head.