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General Mach Discussion / Re: mach 3 and Xylotex

« on: February 26, 2008, 11:51:27 AM »

Now I need to come up with a 30 volt power supply at 5a with out breaking the bank. If any reader knows of a good source for power supply like this please let me know.

Meanwell S-150-27. This is 27 volts 5.6A nominal, adjustable 24-30V. At 30V it delivers 5.0A, so it's exactly what you're looking for. (Make sure that you get the -27 model. The much more common -24 model only goes up to 28 volts!)

$34.43 at trcelectronics.com. Jameco.com wants $69.79 for the same thing...

BTW, it is not recommended to run the Xylotex board with more than 30V. The limit is 35V, but you need a margin for back electro magnetic force. Quoting the Xylotex data sheet:

The system motor drive circuitry can handle up to 35 volts which includes Back EMF (BEMF). The recommended maximum running voltage is 30VDC. The absolute maximum voltage is 35VDC. Exceeding the maximum voltage (35V) will destroy the circuitry!

Peter