[MaddCow]

Hello. I am got my 5 axis bob and tb6600 working. Steppers are nema 23. Probably 60-70 oz/in. I also have a TB6560 that works as well. I notices that the TB6600 runs considerably cooler than the TB6560. Is this due to the 30% torque thing I have read about? The TB6600 feels much better and smoother though. Also seems to be able to run at a higher ipm. At high imp with the TB6560 the motor just shakes. Can you tell by the speed if you are getting proper torque? Or is that more important for holding. Here is a video. Sorry for the poor quality and lighting. Thanks everyone.


https://www.youtube.com/watch?v=_Lnn...ature=youtu.be

[Dave3891]

Where did you get the TB6600 driver from?

Are you running two motors on the same driver?

[MaddCow]

I got the driver from mibinstruments on eBay. They are listed as shipping from the US so I went with them. But actually took longer on shipping than the tb6560 I got from China.

And yes, I am running both steppers with one driver

I forgot to mention I am running a 24v 15amp power supply.

[Dave3891]

Did they include a schematic of the drive with it? It looks like it uses a different standby circuit then the rattam and div268n drivers.

You should check the current draw to the drive with an amp meter.

I also do not think you would want to hook two motors in to the same driver...

[MaddCow]

The driver came with some kinda booklet. I don't have the enable hooked up cause it's not clear how the works on the bob I have. I just have dir and step hooked up

And what's wrong with running 2 motors? Thanks

[danielfarley]

Hi ya,

Have you worked out if your MIB board is producing full torque?

Is this the MIB board you have? TB6600 Stepper Motor Driver Board 4.5A CNC engraving driver board

Thanks Daniel

[MaddCow]

Hi ya,

Have you worked out if your MIB board is producing full torque?

Is this the MIB board you have? TB6600 Stepper Motor Driver Board 4.5A CNC engraving driver board

Thanks Daniel

That appears to be the same board. As for torque, if you read this entire thread you know as much as I do lol. I was hopin someone who knew might chime in but it hasn't happened yet. If temperate is any indication it is probably reducing torque because the motor bl gets much hotter much quicker with the tb6560. I need to order 2 more drivers but am not sure if I should get tb6600s or tb6560s or one of each again

[lucas]

It's impossible to comment without schematics or measurements.

I notices that the TB6600 runs considerably cooler than the TB6560. [/url]

The above is from your first post and seems to indicate the chip temperature: the TB6600 will run a bit cooler in the same circumstances due to better spec's than the TB6560.

If temperate is any indication it is probably reducing torque because the motor bl gets much hotter much quicker with the tb6560.

You are mentioning the motor temperature in your last post.

This would indicate a smaller motor current (30% kicking in to soon) if the test between both drives use the same supply, motor current settings and are done with a running motor.

A better way to analyse the actual torque is by measuring it, there are several simple ways to do this.
One is to mount a pulley on the motor with a wire wound on it and a weight attached to the end. Clamp the motor at the table edge and increase the weight untill the motor can't lift it anymore and stalls.
You could even calculate the torque at that speed because you know the weight and pulley diameter.
Beware that the weight will drop real fast when the motor stalls........