Hi everyone,
I've just completed most of the work to retrofit our Interact 4 with modern CNC control. I thought I'd post a few pics and some drafts of the schematics of the new wiring. We tried to keep a lot of the old wiring, and as such things like the power drawbar, hard limits and E-stop circuits are still operational without (much) modification. There is still a long list of things to do before its fully operational but we were able to machine wax and aluminium samples so far.
The basic control system consists of:
- CNCdrive DG4S servo drives for X, Y and Z axes
- PlanetCNC mk2 cnc control board for CNC control
- Parker 514C dc controller for spindle control
Basic diagram of the axis control setup. Note the 480v connection on the transformer is just for the connection label, it isn't actually feeding 480v.
The error/fault/E-stop diagram. Control relay 2 (CR2) is operated by the original E-stop circuit. When activated, all drivers stop. Also, if one driver faults, they all deactivate.
The interface between the PlanetCNC drive board and a CNCdrive DG4S:
The Parker 514C dc servomotor driver config (Note that the AC to DC circuit on terminals A1 and A2 will be replaced by an AC contactor):
A few pics of the setup so far (wiring needs to be tidied and a lot of other jobs done):