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Author Topic: Step motors problem - no movement  (Read 7311 times)

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Re: Step motors problem - no movement
« Reply #10 on: March 27, 2011, 11:44:26 AM »
That looks good, now we tested the pins and the voltage is changing from 0V to 3.3V when I jog from - to +. It works for all X,Y,Z but nothing happening with the step motors.

Marcin

Offline Tweakie.CNC

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Re: Step motors problem - no movement
« Reply #11 on: March 27, 2011, 11:50:48 AM »
It depends on the type of Opto Isolators fitted to your controller board but some of the China made boards require the full 5 volt TTL signals from the parallel port and are unreliable at 3.3 Volts operation.
Do you perhaps have another PC you could try.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Step motors problem - no movement
« Reply #12 on: March 27, 2011, 12:02:23 PM »
Hi,

I just opened the controller box and I found the name of the board which is TB6560-3V2. I will try to test on m friend PC now and see what will happen.

Thanks,
Marcin
Re: Step motors problem - no movement
« Reply #13 on: March 27, 2011, 02:02:12 PM »
Hello,

I have tried to another PC and all works great, step motors moving. Is there a way to change output to 5V on my P Port or what I have to do to make the router work on my PC.

Thank you all for help !!!

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Re: Step motors problem - no movement
« Reply #14 on: March 27, 2011, 02:12:05 PM »
If your PC has a spare PCI slot you can buy a  PCI parallel port card with 5 Volt outputs.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Step motors problem - no movement
« Reply #15 on: March 27, 2011, 02:23:07 PM »
I do have, would you please give my some recommendations ? Just want to make sure I will buy the right card.

Thanks,
Marcin

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Re: Step motors problem - no movement
« Reply #16 on: March 27, 2011, 02:43:54 PM »
I believe the CNC4PC board A25 has 5 Volt outputs but check with them first.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Step motors problem - no movement
« Reply #17 on: March 27, 2011, 03:45:27 PM »
Great, thank you all for support !!!
Re: Step motors problem - no movement
« Reply #18 on: March 28, 2011, 02:02:26 AM »
Hi Marcin,

The controller you have is TB6560 based. Seems your problem is related step signal. Try the following:
- Activate E-Stop mode and check if all the motors are unlocking
- Set the kernel speed to 25KHz. Note: you must not use higher than 35K for this board.
- Save the config and exit mach3.
- Start Mach3, check if you can jog.

If problem exists then it is related to your board:
- Unplug the controller. Set the corrent setting to MAX.
- Plug the LPT interface and power cable.
- Carefully identify the PIN 3 of the main IC (under the heatsync) for any axis. Connect a volt meter at this pin.
- Jog from Mach3, you'll notice a variable volt...
« Last Edit: March 28, 2011, 02:07:08 AM by leaveme »
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Re: Step motors problem - no movement
« Reply #19 on: March 28, 2011, 06:50:03 AM »
Hello,

Thank you for the post. I found the problem which is parallel port on my PC. As Tweakie said this controller needs to be plugged in into 5V output PP and my has only 3.3V output but I have tried on other PC and everything woks perfect.

Marcin