1 axis tb6560 any good?

[boldford]

I have 3 of these but not tried them yet.
They were bought for a very simple application so I'm hoping they will be OK.

Only problem I can see at the moment is they need 5V and return step and direction to the controller.
My application sends step and direction out at 5v and returns to ground.

Being a big hammer man as opposed to MiG welding IC's onto circuit boards i believe you can reverse this with pull up / down resistors ?

Yeah. I hope this one's going to be OK too.
This one seems to repeat the error of deriving the 5v supply from the motor supply. It appears the TB6560AHQ is easily smoked if the motor voltage is applied before the 5v has settled or removed before the 5v is removed.

I suspect the design may be using the optos connected active low to alleviate their slew rate problems rather than using a Schmitt Trigger. At this stage it seems the I/P and driver are completely opto-isolated.

More to follow after I get some juice on it.

[cropwell]

Hi John,
If you have the source code for the arduino, I could mod it for you. If not I would need to know what the Little Bugger does and I would have some idea how long I would need to code and test from scratch. I have three Arduinos of varying strengths sitting a box and the arduino community has a lot of code and functions available. Give me a call in a week if you wish to discuss. At the mo I have a bloody awful cough and cold and feel as rough as a badger's arse.

Cheers Rob

PM me if you need my phone number.

[John S]

Rob,
The guy was able to invert the signal and get the driver working. Works OK but a lot of noise from the driver, very much like the cheap 3 axis board I have in my small engraver.
Been running the application using this single axis TB driver, one of Roy's System3 drivers and a 542 driver.
No contest, the 542 is head and shoulders above the other two

[boldford]

. . . . .It appears the TB6560AHQ is easily smoked if the motor voltage is applied before the 5v has settled or removed before the 5v is removed. . . . . . . ..

Important Typo Alert
What I should have typed is as follows "It appears the TB6560AHQ is easily smoked if the motor voltage is applied before the 5v has settled or remains after the 5v is removed

[irving2008]

Rob,
The guy was able to invert the signal and get the driver working. Works OK but a lot of noise from the driver, very much like the cheap 3 axis board I have in my small engraver.
Been running the application using this single axis TB driver, one of Roy's System3 drivers and a 542 driver.
No contest, the 542 is head and shoulders above the other two

Thats because the m542 has proper sinusoidal current control and not a chopper controller, the result being less harmonics and less noise (mechanical and electrical). I don't know what you pay for them John (probably less than most of us) but at £28-ish each in set of 4 off eBay its only a tenner or less more than the TB solution and well worth that difference...

[boldford]

I have 3 of these but not tried them yet.
They were bought for a very simple application so I'm hoping they will be OK. . . . .

Having begun my investigation I must give my first words of warning. This tip may apply to any of these monolithic drivers from any vendor; domestic or overseas.
To check out the reverse side of the board it was necessary to remove it from the (reasonably proportioned) heatsink. Unfortunately I found just the barest smear of heat conductive compound where the TB6560 is fixed to the heatsink. I would recommend anyone buying ready made drive units to check this and, if necessary, apply enough to get maximum thermal bonding. The thermal compound costs pennies yet might save you pounds and all the hassle of down-time.