On Thursday 07 February 2019 19:41:20 Peter C. Wallace wrote: > Yes its fixable just needs a TLP127 OPTO and careful work with a SMT > hot air gun...
And if you do it? How much? I have the hot air tools, but the hands at 84 are getting a little shaky for that sort of work. As I am learning in doing this project. > > Thanks Peter. > > > >> feed 5 volts regulated to spindir+. wire internal to the interface > >> box Feed interface boxes +12 unswitched power over the cable to +12 > >> volt Feed regulated 12 volts to spinena+, Third wire > >> Feed spinena- to servo enable on pin 5. > >> Find pwmgen-01.pulse to PWM + on servo pin-1 > >> > >>> Feed a signal from the Sainsmart's pwm-1-output to the pwm+ at > >>> pin1 on the servo is the 5th wire and the connector is full. Once > >>> thats done, take 3/8" off the bottom of the swarf shield over the > >>> x-home-switch, which will allow that to come back over the top of > >>> the y motor, giving me back a sorely needed additional inch or > >>> more of y motion. The table was coming forward but this swarf > >>> shield was too long and was hitting the motor mount. If I clear > >>> that, I gain nearly 1.5" of y motion. When I put that bellows > >>> cover on, I was far more concerned with keeping swarf out of the y > >>> screw when I built it 4 years ago. > >>> > >>> Now, a question for Jon: > >>> > >>> Normally that 12 volts to the logic on pin 6 will be present > >>> anytime the interfaces line cord is plugged in, and which I intend > >>> eventually to plug into the power strip that feeds the rest of the > >>> motor power box. So it will come on with all the stepper drivers, > >>> but spindle power is soft started by enabling the machine from F2, > >>> takes 3 seconds to get full power. And I don't trip a 30 amp > >>> breaker charging the supplies caps. > >>> > >>> But is it safe to apply the high voltage motor power to the > >>> pwm-servo amp IF for some reason the interface is powerless and > >>> its 12 volt supply is off. This will put full motor power at > >>> pins-1-2, with no logic power on pin 6. > >>> > >>> Is that safe, or will it let some smoke out and kill all the local > >>> kittens? I could rig a relay, or better yet, move the SSR + > >>> terminals to the 12 volt supply, better yet disable that in hal if > >>> the 12 volts isn't there by changing the sserial com mode so it > >>> will send an a/d output back to lcnc. Thats slower of course but > >>> I'll check it out. > >>> > >>> Thanks Jon. > > > > Cheers, Gene Heskett > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > > > _______________________________________________ > > Emc-developers mailing list > > Emc-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
