Taig Motor tuning ?

[gunlocators]

Ok got everything setup tonight and having a issue. The steppers seemed to stutter when the taig is jogged.
it is semi smooth if mach 3 is set to 5lpi. Yet its is not smooth at all. This is the same with all 3 axis.

I have done all the Mach 3 optimizations for windows

I have removed the steppers from the taig and all axis turn smooth by hand

When steppers are jogged while removed from mill problem is the same so I ruled out gib binding.

Can anyone running this setup give a starting point for motor tuning maybe that will help get a reference where to start. Also I hooked this up to a xylotex stepper and it did the same so i doubt its a lot of bad steppers.

Setup
Taig Mill
Controller Gecko 540 Rev 4
PC Desktop Compac Presario 2.somthing ghz 1ghz ram Win XP Optimized for Mach 3
Steppers Keling 282oz KL23H276-30-8B
Power Supply Keling 48V

[Crevice Reamer]

You are running 4.2 Amp motors on a 3.5A limited driver. This cuts the 282 oz motor down to only 234 OZ. I don't recommend this motor for G540. It STILL should run pretty good though. 234 oz is plenty for a Taig.

What size current limit resistors are you using?

How do you have the motor wired? Bipolar Series or Bipolar Parallel?

Have you tried setting the trim:

ADJUST: This trimpot adjusts the motor for the smoothest possible low-speed operation. Set the motor speed to
about 1/2 revolution per second and then turn the trimpot until a distinct null is noted in the motor’s vibration. This
will result in the most even microstep placement for a given motor and power supply voltage. The default setting for
this trimpot is at ½ -turn and the setting for your motor will be within +/- ¼-turn of the default setting

CR.

[gunlocators]

Wired Bipolar Parallel ----- 3.3k ohm resistors used in steppers

motor tuning this was last setting where it had least stutter in motors same in all 3 axis

steps per 40000
velocity 5
acceleration 2
step pulse 2
dir pulse 1

[Crevice Reamer]

Ok. With 3.3K resistors, you are only getting 221 oz torque from your 283. This should not have anything to do with your problem--Just an observation. .2K of difference in resistor costs 13 Oz of torque.

Can you measure the actual Voltage present at the PSU terminals and the actual Voltage present at the G540 for us please?

CR.

[gunlocators]

48.8v both places

[MechanoMan]

Are you sure you wired it correctly?

I tried to be careful about what I was doing and STILL managed to wire it wrong the first time. Coil A had one wire hooked to Coil A's driver and the other hooked to Coil B. Oops. It juttered back and forth but failed to go anywhere. No damage. I'd be surprised if it moved when it was off the mill though.

[Hirudin]

You mentioned that you did the optimizations to Windows, have you run the Mach3 driver test?

[gunlocators]

Resolved issue today with suggetion from fellow board member. Built new PC old on was not running epp parallel port correctly runs smooth as butter now