RE: [CAD_CAM_EDM_DRO] Request for comment - G320 wiring

| -----Original Message-----
| From: Alan Rothenbush [mailto:beer@...]
| Sent: Tuesday, August 14, 2001 12:53 PM
| To: CAD_CAM_EDM_DRO@yahoogroups.com
| Subject: [CAD_CAM_EDM_DRO] Request for comment - G320 wiring
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| Well, I'm FINALLY getting around to wiring up the G320s I bought
| last CHRISTMAS. ( My Christmas present to myself )

Good! Geckos work best when properly aged! :)

I looked at your schematic and have one comment - E-Stop switches are
normally hardwired into the system, and should not require that any
electronics be functional. As drawn, your system has the potential of
failing in the "run" position if the electronics fails. This would not meet
OSHA safety requirements. If the Geckos are like the Camtronics, you don't
want to suddenly open the lines to the motors, but you probably want to
interrupt the power supply to them with a switch contact. Once you have this
hard-wired override, then you can run additional signals to the PIC (or to
the computer) to inform your control of what has happened.

-- Jerry
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