Centroid Community CNC Support Forum

Yeah... I will have to talk to them... they want the board back and just because i’m in uk i really don’t want to do that. It is shame they don’t sell just that board without beaglebone

I get new beaglebone and I’ll be replacing it soon. I noticed that also acorn pcb around ground pin is little burned. Any idea how to check if the acorn is ok? I believe there is a component at FB6. Maybe Matt (Eng199) will chime in. My friend, you should have taken the opportunity to buy another b...

I get new beaglebone and I’ll be replacing it soon. I noticed that also acorn pcb around ground pin is little burned. Any idea how to check if the acorn is ok?

Many members use the KBSI240D successfully here. Just do a search here. Not sure about some inexpensive Chinese board that requires two separate power supplies.... Ok.. you got me there so I just bought it.. all together £150... and BTW none of them are in stock in UK from radwell as someone mentio...

Black Forest has already provided you with a link to Radwell in Germany for the KB unit. Their UK office will sell a reconditioned unit direct to you if you want to avoid Import hassle. see link https://www.radwell.co.uk/Shop?source=GoogleShopping&IgnoreRedirect=true&ItemSingleId=466309&...

Not sure what to tell you.... It appears you have a DC Brush servo without an encoder OR is there an encoder on top of it? Assume the motor is belted at 1:1 to the spindle? I might experiment with an Analog DC Brush Servo drive if I was stuck with that motor. They simply take an analog input 0-10VD...

A VFD can increase a 3 phase motor speed by increasing the frequency. It can also reduce the motor speed by reducing the frequency. If top speed is your sweet spot then you should be ok. Low speed torque may suffer on a 3450rpm motor. It's also why I recommend a sensorless vector drive. If it were ...

As Marty explained, a DC motor requires a DC drive. If you can't find a DC drive in your area that is compatible with the Acorn, then you can still use a 3-phase motor, VFD, and pulley to get the speed that you need. A motor spinning at 3,400 RPM would need a 1:1.5 pulley to produce 5,100 RPM at th...

We're kind of at a loss because you are in the UK. We don't know what suppliers are available to you. I recently did a Prolight 1000 mill for a client. It had a 3450rpm motor on it. I used a Sensorless Vector VFD to drive it to 5000rpm. He was going to do soft metals. SO, you could find an inverter...

The unfortunate part of being a DIYer is that many times that parts you have on hand cannot be used in your project. It appears that your motor drive can not/should not be used with the Acorn. That tells me that it's time to investigate other motors/drivers that are compatible with the Acorn. In my...