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Topics - Robhi

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General Mach Discussion / X axes loosing steps, helps pls
« on: October 07, 2013, 06:51:58 PM »

I have built a router for wood working, with servo motors, Y and Z axes are ok, but X axis is loosing steps when it accélérâtes a little bit.
I use geckos 320x drives with digital encoders 500 lines. servo motors KL34-180-90 and power supply of 72 volt.

X axes is working with  A axes as slave. pully 2:1 and screw of 10mm pitch.
Y and Z axes 3:1 and rhe screw is also 10 mm pitch.

the prblem is when the machine is cutting it does not loose steps, but when the z axes is up and it moves x axes fast it looses steps and motors bocomes jerking or something like that.

I usually use 500 for the feedrate .

I have attached my xml file, if it will be needed.

hoping to get your help.

thanks a lot

Hello every body,

I have nearly finished my machine cnc mill, but I have a problem with, I guess the encoders,

Motor:- KL34-180-90
Encoder:- Am 102 Digi-key 500 lines.
Power supply : 65 - 70 volt dc.
Gecko 320x
When I tisted all, motors etc.. with short cables , every thing was ok and motors run very fines. but, when I mounted them on the machine, every thing changed:-

motors do not accelerate very well, that means they take time to accelerate . times of responde is( very long)
and also when they stop, they do stop as before, they contiue to move 1 or 2 seconds.

enocder and motor have long cable, may be more than 5 meters for z and Y..

Could I have your help please?

Thanks a lot


General Mach Discussion / Spindle with mach3
« on: June 21, 2013, 03:58:35 PM »
Hello every body,

I have ordered a Huanyang VFD to control a spindle of 2.2 kw. Is it possible to make mach3 control its speed?
if yes, what is the best way and the easiest one to do so?

thanks in advance for your help


General Mach Discussion / Gecko 320x
« on: May 08, 2013, 04:03:24 PM »
Hello every body,

I countered a problem as most of people on the web. I have wired my gecko 320x ( I guess correctly) as it mentioned in documents.
trimpot on 11 o'clock,  I have done all the steps and every thing was going fine, testing the encoder, is OK too, sending pulses is fine too, till I have wired the servo motor,

kl 34 180 72. the fault led remains red. I have a power supply of 72 volt, ( bought a kit ) with the encoders etc...so normally everything is compatible.

any help would be appreciated.

thanks in advance
Thanks Robhi


today I tried to test my machine, if everything is OK, like, home, limit, relay etc. but I was surprised that there is no connection between the machine and the PC. there is no led for the limits and home. mach3 is well installed, I guess, I rebooted the PC, pulse is excellent. I used soundlogic XML file. I have a PC with xp installed, administrator.. nothing  respond...lol

I do not know what is going on...

thanks for help

Hello every body.

I have servo motor for my future cnc. I have the following kit servo motor:-
  NEMA 34 Servo Motors 3 Axis CNC Kit:

NEMA34 Servo Motors 3 Axis CNC Kit(115VAC,230VAC):

3 PCS Geckodriver G320X, 80V/20A

3 PCS KL34-180-90 (NEMA 34) Dual Shaft, 1125 oz-in Peak 90V/40A

3PCS US Digital: E5-500-250-N-S-E-G-2 Individually
Packaged Shaft-Mount Optical 1/4" diameter shaft.
Molded mounting ears for 1.812" bolt circle (with
Installation Tool) for NEMA 34 Servo Motor

3PCS CA-FC5-SH-NC-6 Connector for 500 line or
250 line Encoder: 5-pin polarized conductor
shielded round 24 AWG cable. Standard
length is 6FT.

1 PCS KL-7220, 72V, 20A, Unregulated Power Supply, 110V/220V

1 pcs 5V Power Supply, 110V/220V

1 PCS C10 Breakout Board for 6 axis ( E-Stop or Limit Switch can be
I have a ball screw of 10mm pitch , with a pulley of 60 teeth on the screw. the second pulley which is mounted on the servo motor is 20 teeth, and the belt is T5. I also have Gecko 320x...

How could I calculate the step per revolution please?

I do not know if I give you all the information that you need.

thanks for you in advance for your help.

my unit is in mm.



General Mach Discussion / Gecko 320 , Servo
« on: March 02, 2013, 01:30:49 PM »
 :) Hi every body,

I would like to use gecko 320 for servo, but there something that I can not understand, so I need your help please.

it is written that before testing the gecko drive, we should turn P I D T trimpot to 11 O'clock. Could I have your help please, with more details, please?



General Mach Discussion / help pls
« on: January 14, 2013, 05:01:59 PM »

happy new year for all of you..

I need some help from one you who lives in USA, I live in Switzerland. If there is someone who could try to help, please contact me at my mail


thanks for all you


General Mach Discussion / servo encoder ?
« on: April 29, 2012, 12:21:57 PM »

I would like to change my stepper into servo motors, I am using gecko for stepper motors, and sound logic breakout board, I would like to use gecko for servo motors.

is it easy to wire servo motors to gecko? could i use my sound logic breakout board? or Should i need to change all my system? how and where we wire the encoder?
am very sorry i do not know anything about servo motors.. hoping to have your help..

thanks à lot for all of you

General Mach Discussion / need an advice
« on: January 02, 2011, 11:19:06 AM »

happy new year....

i have a cnc machine with stepper motor, gecko drives and campbell breakout board, i would like to change stepper motors into servo ones, i do not really know which kind of motor i have to buy, AC or DC ones? will my breakout board will work with? and my drives gecko?  i guess they are G230  thanks in advance for your help

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