On 10/09/2019 10:06 AM, Todd Zuercher wrote:
Jon,
What would be the approximate cost estimate for your setup?
No, the VFDs are each set to same speeds, with a single analog output.
That would be $550, for 2 ea. Universal Stepper Controllers
and one Spindle DAC.
Now, I can see a possible noise problem if the analog
grounds of all the VFDs are tied together.
But, if it is running that way now, then I guess they have
suitable noise immunity.
A DIP switch can be flipped on a channel-by-channel basis to
set the step/direction outputs to be in quadrature mode
instead. Optionally, encoders can be fed to each axis.
Opto-isolated digital inputs are provided for a contact
closure to be sensed. Optionally, you can use NPN-type
sensors for inputs. Positions are on the board for Solid
State Relays to be plugged in for digital outputs.
Jon
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