Driver wiring help...

[Lee Roberts]

Hi Mike,

The PSU’s are wired in Parallel, the earth going from the PSU’s (green) to each driver housing is done with a star arrangement.

Do not daisy-chain the fuses back to the PSU; wire them individually as per the diagram.

Fuses are rated at the current they will carry without blowing, which should typically be 25% higher than the highest current you expect to encounter. Generally wire should be rated 50% higher than the expected maximum so that the fuse becomes the weak point.

Also for high frequencies and for systems where there are fast transients (like a stepper driver) stranded wire is better as high frequencies travel in the outer skin only, so more strands gives a better result (more surface area).

Lee