Z Axix Keeps Running

[comptrmedic]

I've just finished my router, doing initial setup using TCNC 4.1 with a SOC MC433 controller (latest issue) and NEMA 23 125oz steppers. My problem is that X and Y axis work great but Z axis keeps going for awhile after key release in jog mode, unless I set velocities way down to barely moving. Any ideas?

[T-Robb]

Hey comptrmedic,

You say that you have the latest version of the MC433 controller, what is the version number? Im trying to find some one with a version number greater then 1.1B.

Did you get any of the firmware updates for your controller?

I ask all this because Im trying to trouble shoot some holding torque issues im having with my card. As soon as I stop sending the PWM to the controller the motors drop completely dead.

Thanks,
Tyler

[comptrmedic]

Tyler,

My controller is marked MC433(G), I have a similar problem in that if I power up the stepper power supply with the parallel port connected to the controller the PS fuse blows. As long as I do the PS first then connect the PPort cable then all is fine. I have a sneaking suspicion that it's a grounding issue between the stepper PS and the computer. I haven't tried to track that one just yet, I'm still trying to figure out why my steppers are missing steps if I try to drive the system fast enough not to burn the wood I'm routing. If I run the system at a slow speed all works fine except the wood burns and eventually gets hot enough to set sawdust on fire.

Jerry

[T-Robb]

Hey Jerry,

I have a couple of question regarding your hardware setup before I can see if I have any recommendations:

• What are you using to power your motors?
• How are you fusing your system (are you using a mainline fuse, then a fuse on each motor?).
• Are you using fast blow or slow blow fuses?

On my setup I haven't tied the ground from my MC433 board power to my motor ps are I have no issues with that. I'll post a picture of my control box later this week.

Cheers,
Tyler

[gothdragon]

i allso got the MC433 Motor Control rev 1.2

never buy off ebay

the board is not moveing the motor's they buzz like there not geting the right power i tested everything i played with the tuning
i looked all over hopeing that the pin setup was off as that is what it seem's

my pin set up is

3 4

5 6

7 8

im using mack 3

all it do's is buzz motor's get very hot

i am new seem's there is alote of bad Motor Controler's

please can someone give me some name's of WORKING controlers
this the sic brand i got that was a wast of $$$ my othere was the tb6560