Once the magic smoke comes out, things don't work any more.

John Kasunich
jmkasunich@fastmail.fm
GPG Key

Postings:

• most recent
• Shoptask CNC
• Spindles
• Photography
• Programming

Index (titles only):

• Shoptask CNC
• Spindles
• Photography
• Programming
• All of 2008
• All of 2007
• All of 2006

If you are into RSS, you can Subscribe to a syndicated feed.

• EMC
• Van Norman

• Alex
• Chris
• Jeff

Thu, 11 Jan 2007

Power Input assembly completed

Tonight I finished wiring the power input panel. It's amazing how much mechanical work goes into an electrical project - I spend several evenings working on the blank panel, doing layout, drilling and tapping holes, making some standoffs and modifying others, making some angle brackets, etc. That was before I even started doing the wiring. Mounting all the parts and doing the wiring went quickly by comparison - two evenings.

Panel, spacers, brackets, etc.	Front view with parts mounted and wired	Back view

The terminal blocks along the front are (from left to right):

• Spacer
• Switched L1, Neutral, and L2 (two terminals each) for stepper power supply and temporary single phase spindle motors.
• Ground (green/yellow)
• DC Bus for eventual spindle VFD
• Spacer
• Unswitched L1 and Neutral, for computer, etc (three terminals each)
• Ground
• Unswitched L2 and Neutral, for misc loads (usable with 240V input, to balance load between L1 and L2).
• Ground
• Control signals (blue wiring) - 12V input to energise, contact closure when ready to run
• Spacer
• Main Power Input - L1, Neutral, L2
• Ground

(posted: 11 Jan 2007 23:58) (permalink)