Messages

1

General Mach Discussion / Re: tb6600 fried - what now?

« on: August 29, 2014, 02:13:15 PM »

ah i see! i was just worrying about frying something with the power source!

so thank u very much again for all the help!

kiark

2

General Mach Discussion / Re: tb6600 fried - what now?

« on: August 29, 2014, 01:58:11 PM »

it is a DIY eshapeoko i assembled. it is belt driven on the X and Y axis and uses a leadscrew on the Z axis

i found a NEMA23 Motor on the geckodrive site which is recommended for the gecko540

http://www.geckodrive.com/stepper-motors/g723-280-4.html

unfortunately if i do the maths again i get a higher needed voltage than the allowed 50v since the motors have 3.6mH

kiark

3

General Mach Discussion / Re: tb6600 fried - what now?

« on: August 29, 2014, 01:33:48 PM »

oh ok, well... that makes sense then

any suggestions on the motors?

4

General Mach Discussion / Re: tb6600 fried - what now?

« on: August 29, 2014, 01:11:44 PM »

Hi

i just found something that makes me wonder a little bit:

im using 4 Nema23 Motors: 57BYGHM201 on http://de.wantmotor.com/ProductsView.asp?id=165&pid=80

the phase inductance is stated as 14mH

following the tutorial to calculate my needed power source i have to 32*(square root of 14) then... makes 134,...v

i guess im missing something again?

the steppers have 1.7A so the resistors i need are 1.7k 5% 1/4W, right? i could only find 1.8k ones... could i use those?

thanks,

kiark

5

General Mach Discussion / Re: tb6600 fried - what now?

« on: August 28, 2014, 03:03:12 PM »

ok, just ordered one!

thanks for the help!

6

General Mach Discussion / Re: tb6600 fried - what now?

« on: August 28, 2014, 02:54:21 PM »

so the 36v wouldnt fit?

it says 15 - 50v or am i missing something?

thanks

7

General Mach Discussion / Re: tb6600 fried - what now?

« on: August 28, 2014, 02:32:17 PM »

Hi,

i already saw the gecko G540 and it looks really nice! do i only need the G540 or do i need any extra boards that will be attached to the motors? (sorry, kinda newbie regarding this)

thanks for the quick answer and help

8

General Mach Discussion / tb6600 fried - what now?

« on: August 28, 2014, 02:25:19 PM »

Hi!

i fried my chinese Tb6600 5a controller today... even after i reworked the cooling :/ i should not have bought that cheap stuff i guess! or is there a possibility to burn this down using false mach3 settings? wrong velocity or something?

im running a 4 axis (double Y) cnc mill and it would be nice to have a one-in-all controller solution which is solid and doesnt burn down again. im using 4 Nema23 Motors and already have a 36v power source.

Any recommendations would be really nice

kiark

9

General Mach Discussion / Re: Nema23 velocity and acceleration

« on: August 18, 2014, 08:10:32 AM »

hi,

thanks for the link!

somehow my steps per unit dont make alot of sense! following alot of calculations i get to this:

i set up my machine the following:

1/16 microstepping
0.9 degree motors
belt driven

when i calculate this using machs3 own calculato, i should have a step per of 6400! using mm btw.

using this throws my machine completely off calibration!

when i move my x-axis for example for +10.0000 the machine moves 250mm instead

when i set the steps per to 160 i get about a 1 to 1 ratio. but the machine moves really slow, even when putting up the velocity alot.

does mach3 axis movement even show in mm or is it cm?

thanks, kiark

10

General Mach Discussion / Re: Nema23 velocity and acceleration

« on: August 16, 2014, 07:11:30 AM »

Hi!

first of all, thanks for the help!

im running every motor on a 100 velocity and a 70 acceleration which seems to work just fine and the motors also sound nice!

im using a 36v supply and the motors get 2amp which i set up to that value by using th dip swtches on a tb6600 5A controller i bought.

one thing that makes me curious is, that im having a 1000mm x 1500mm table but when i jog the machine to the coordinates for Example 30 on my x-axis (which should be in mm, right? - i set the native units to mm) the machine jogs way more than 30 mm.

davek: u stated that u made these adjustments with a wizard. i went through all the menus but couldnt find any :/ how did u do that?

is it possible to measure the distance between homing and limit and tell the machine how far it actually went? i have a laser measuring device here that would work fine that way i guess.

kiark