That seems reasonable. I just adjusted mine so I couldn't detect any movement by eye. I think your method might be more accurate.
With encoder feedback the controller is looking for some number of pulses/sec and adjusts the analog signal accordingly. The Tach, Lead, and Sig should not need to be adjusted. Your modern controller takes most of the control away from the drive, unlike the original system.The other adjustments on the board are labeled Lead, Tach and Sig.
In my reading the Sig is typically adjusted to a specific voltage at a specific feed rate. If I'm understanding this, set the machine to a feed rate, the voltage sent from the controller to obtain the feed rate will be based on the return signal from the encoders. You set the Sig so that the output from the controller is a specific voltage for that specific feed rate. Am I understanding that correct? The example I saw was 40IPM feed rate set to .8v. Is this setting universal or does every servo have different targets?
I assume the Lead = Gain. With the way the controller works, you should not need to adjust this if things are working pretty well.I'm not sure what Lead means, is that the same as Gain? Any tips on adjusting this for my servo?
Again, unless the system is very unstable, you most likely don't need to worry about this setting. You will compensate using the controller PID settings.I saw that you adjust the Tach if you can't obtain the proper adjustment on the Sig?
Not really, that is the PWM chopper frequency. I have one machine that does that also, only the Z axis motor. A bit irritating, but I have never been able to get rid of the noise.I do have an oscilloscope if that makes setting any of these easier. Also, there is a high pitch noise when the machine is on, I'm assuming it will go away once everything is adjusted right.