I have an AMC B30A40 drive that I just got from their wonderful university outreach program. I am trying to figure out the easiest way to run it in constant torque mode. I am currently using LinuxCNC, but I'm a little unsure of what hardware I need to interface the PC to the drive. I know that the drive uses a +/- 10v control signal, is there a cheap solution to just running a single drive in current mode? I really don't need anything fancy, just my servo maintaining a constant torque.
That gives you
PCI Anything I/O – 34/ I/O bits LX9 Spartan6 FPGA
6 axis analog servo interface - 48 isolated I/O for 25 pin Anything I/O
And that is expandable.
I don't know if you can get much cheaper than that. (but may be overkill for what you are doing)
You could do a 7I43-P with a 7i33 which gives you 4 analog servo interface and some unisolated i/o for $79+$69 but that is a parallel port interface instead of pci.
I can use a parallel port, serial port or pci. I could also possibly build something myself if it wasn't too complicated. I read something about using a DAC with some solid state relays on this forum, but I'm not sure where to find a cheap DAC or how to know if it would be appropriate. That Mesa 7i43-p and 7i33 solution sounds very promising. Honestly, if I could just set the current/torque, I don't even need to interface to the computer if there is some standalone hardware that will do it, I just assumed it would be easier/cheaper.
AMC B30A40 Interface Card
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