CNC newbie electronics query

[Clive S]

"Im using Nema 23 (sy60sth88-300bf) motors (link is http://www.zappautomation.co.uk/elec...per-motor.html).

So from what I gather, Ill connect all the screens to the star point from the motor end. Should I use any specific wire for connecting screens to star point?" no just as short as possible. ..Clive

[JAZZCNC]

Few pointers other than Star Earth point mentioned.

# Always put shrink wrap on the terminated ends and any connections of the braided shield wire of CY cable as strands of braids can come lose and cause shorts.

# Try to keep signal wires away from power wires much as possible and keep all signal wire runs short as needed and no more.

# Locate the PSU furthest away you can from BOB or devices that take signal wires ie Drives.

# Don't fasten or tie wrap signal wires together.

# Use bootlace ferrules on cables for connections to drives, BOB, etc they make life easier and far better than soldering with less chance of poor connections or broken wires which is a common cause of intermitant problems like drop steps etc.

# Don't daisy chain (series wire) power or signal wires to drives etc always provide them with there own route back to source.

# Minimise any plug connections or wire joints. Plugs and sockets are nice but they are also a source for problems so if you can live without them do so. It's one less area for problems when newness as worn off.!!

# Build the Control box in stages and test as you go along. This way you know which area is giving you the problem and hopefull no magic smoke is released. Best to start with minimal connections so for first test just BOB and drives with no connections to anything like limit switches etc. Then introduce them one at a time then test each before moving onto next.

# Use correct fuses on anything that is expensive and don't over rate the fuse. If you have any doubts when testing the use lower rated fuse than component rating so it blows that first.

##### DONT turn anything on if your not 99.9% sure.!! ##### and Double check everything before doing so.!

Try CSE cables for your CY cable and general wires etc they will be much cheaper than Maplins etc. http://www.csecables.com/acatalog/Fl...rol-Cable.html

[Clive S]

All spot on good points. Good luck with the build. ..Clive

[Skydeals]

thanks for the info!