Messages

41

General Mach Discussion / Re: Motors get Your hot motors!!!

« on: June 24, 2008, 10:12:37 AM »

i think you right - opps

42

General Mach Discussion / Re: Motors get Your hot motors!!!

« on: June 24, 2008, 09:59:40 AM »

yes all metric - direct drive i think its right handed 200mm pitch

yeah i can keep my hand on them, i expected some heat from the motors i just assumed not that much, but then again i have never made a cnc machine before so i wouldnt really know, aslong as they get heat then im happy!

 

43

General Mach Discussion / Motors get Your hot motors!!!

« on: June 24, 2008, 09:36:53 AM »

hello all...

yeah i know me again!

the machines doing fine, one problem? how hot do the steppers get normaly? i expect some heat, but mines fairly hot to the touch!

now another problem i have got is i dont know the turns on my steppers to see what they are...

the lead screw is this

http://www.worldofcnc.com/images/Trapezoidal%20Spindle.pdf
 TR12x3D

i have used the inbult MPG in mach and it has worked out that one step is 133.666666666666666 now that cant be right?

i have read, re read the mach documents and searched day on night here but i have still got hot motors (i think)

what sort of values should i be looking at? i stared with 500 / 50 / 5 in motor tuning


cheers

44

General Mach Discussion / Re: Strange Mach3 proplem please help

« on: June 20, 2008, 04:40:16 PM »

GOD thank Fudge for that!!!!!!!!!!!!!!!!!!!!!!!!!!!!

thank you soo soo soo much Chip & Hood! perfect now, i changed the jumper on the driver boards so the motors only activate sleep mode when no pulse is sent out but then resumes when input is givin then i changed port 17 to active!

turns out that the sleep function was always on and he had it connected to VCC the wrong way, i put the port over my meter and it was reading 1.2v the wrong way and then went back into the 5v Vcc no wonder!

thank god i found the paper work! oh well lesson learnt that this could be a problem!!!

no really guys i thank you so much to everyone that helped me with this, just think how long it would of taken me to find that out with out no pictures or your support!

tomorrow i cant wait to fit it all back together and finish off my motor mount and actualy do some cutting!

6 months and i might actualy get a cut!!!


thank you thank you so much really thanks!!!!!


 

45

General Mach Discussion / Re: Strange Mach3 proplem please help

« on: June 20, 2008, 02:55:09 PM »

another note it says

when adjusting the motor current make sure the sleep mode is off, if the current is adjusted while the driver is in sleep mode there is a high chance of the driver will be over loaded


well i havent changed any jumpers inside the boards, nor have i changed the vcc

am im close?

46

General Mach Discussion / Re: Strange Mach3 proplem please help

« on: June 20, 2008, 02:52:53 PM »

ok so i have 4amp bipolar stepper motor drivers

i also have the schemetic drawings

10 pole connector

1 n/a
2 step signal
3 n/a
4 ccw turn direction
5 emergancy stop
6 sleep (current reduction 25% of set current) low active ??
7,8 vcc +5v
9,10 gnd

47

General Mach Discussion / Re: Strange Mach3 proplem please help

« on: June 20, 2008, 02:47:16 PM »

this is from the manual....

sleep mode
the driver has the ability to reduce the current to the driver, this is when the motors sit still for some time, this saves power and will keep the drivers cooler

3 sleep modes

no sleep mode -
 leave the sleep input unconnected or connect to vcc

automatic current reduction -
connect input to gnd, do not use this in case of more than 1 axis!. 1-2 secs after last step current reduced to 25% next step signal full current will be set

software sleep mode
the sleep input in connected to gnd via the software when all axis are sationary. the sleep mode is activated within 1 sec, this function in controlled with pin 17 of the lpt port using the standard interface


so looks like in max i have to change the 17 pin to active summin...?

48

General Mach Discussion / Re: Strange Mach3 proplem please help

« on: June 20, 2008, 02:35:24 PM »

thank-god, my mum just pulled out the whole information sheets that i thought she shredded 5 months ago

ok its made by damen cnc ready to run kit i just quickly red that the yellow led on each stepper board means its in sleep active meaning much less power and torque

i might be gettin somwhere here you know....

how the hell do i turn that of now im wondering.

could this be it??

49

General Mach Discussion / Re: Strange Mach3 proplem please help

« on: June 20, 2008, 02:20:08 PM »

thanks for the reply, i never wired up the motors or the controller, i have had the motors working fine in mach everything worked properly the speed was correct the distance was correct, the direction was correct, all i did was shut down and 2 days later re boot to check one of the spindles and now im faced with this problem, i have emailed the person i got them from and no reply just yet

have tried the 1/2 pulse mode i have tried every combo, the annoying thing it has been working perfect for the last 3 weeks and now it not doing much!

im still on the hunt for all the information i promise you that

50

General Mach Discussion / Re: Strange Mach3 proplem please help

« on: June 20, 2008, 01:32:38 PM »

here is a quick video i did to show you what i have done.

not there is some high pitch vibrating noise on one axis, this is just from loosening the motor to see if it was binding and its a few washers clattering together!

also not this was just done on another re-install, and i have also re botted mach3 everytime i have changed something too.

i have tried to explane the very best i can but i still think im not winning atall. i have looked on the internet high and low for the information pdf of the stepper boards i have etc... but cant find nothing!

im assuming my port and pin numbers are ok as they have worked fine in the past. as u can see i have just finished my machine and reconnected the motors and now i have stipped it down to the bear bones and taken off a motor to show you close up i hope!

i hope this helps

thanks again please dont give up on me, its taken me 6 months to get this far