Re: [Emc-users] 5i20/7i43 Pico's PWM Amps
Jon Elson el...@... writes: Well, of course, you could also use the Pico Systems Universal PWM Controller. When you deal with the extra support stuff needed for the Mesa board, I don't think there is any price advantage with them. I have some config file sets on my web page at http://pico-systems.com/codes/univpwm/ This is a 4-axis mill setup. You can't actually run this without hardware, the driver will not detect the board and will terminate. Jon, If you start with a blank slate your Universal PWM is a good cost effective solution that simplifies hardware and software setup and provides for Opto22 relays. In my case though I already have a Mesa card (won at Cardinal raffle), 50 pin breakout panels and I installed solid state relays for spindle, coolant and brake when I converted the machine to Mach3/Gecko's. The machine also has a safe, hardware based E-stop circuit. In theory all I need to do to upgrade to your AMP's is to figure out how to wire your PWM AMP's and existing encoders to the Mesa, configure the PWM Hostmot2 parameters and pass the machine's drive enable signal from the mill's E-Stop circuit back to EMC. Roger -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5i20/7i43 Pico's PWM Amps
Roger wrote: Jon, If you start with a blank slate your Universal PWM is a good cost effective solution that simplifies hardware and software setup and provides for Opto22 relays. In my case though I already have a Mesa card (won at Cardinal raffle), 50 pin breakout panels and I installed solid state relays for spindle, coolant and brake when I converted the machine to Mach3/Gecko's. The machine also has a safe, hardware based E-stop circuit. In theory all I need to do to upgrade to your AMP's is to figure out how to wire your PWM AMP's and existing encoders to the Mesa, configure the PWM Hostmot2 parameters and pass the machine's drive enable signal from the mill's E-Stop circuit back to EMC. OK, this shouldn't be a big deal. The servo amps have optocouplers that can be put in series in the E-stop chain, so that any amp that faults will cause an e-stop. The amps run off a +12 V logic supply that needs to have its minus terminal common to the motor power supply. You need to supply +12 V to the enable terminal to enable the amps, such as with an out-of-estop SSR. The PWM and direction inputs are opto-isolated and can be run from a 5 V logic output. No current in the PWM otpo = no current to the motor. The amps are designed for a 50 KHz PWM signal, but could run at lower frequency of needed. That's all there is to it. Oh, yeah, there's one more detail. The DC (brush) version of these amps needs one short pulse in each direction after enabling, to reset the shutdown logic in the FET driver chips. The AC (brushless) amp does this internally. There is a bootstrap HAL pin in my driver to do this, I'm not sure if the Mesa driver has a similar function. Jon -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] 5i20/7i43 Pico's PWM Amps
Is anyone using Jon's (Pico Systems) PWM servo amps with the Mesa 5i20 or 7i43? If so could you please post your ini files to postbin.com . I'm interested in converting from Mach3 Gecko's to EMC PWM and would like to see a working configuration. Thanks, Roger -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5i20/7i43 Pico's PWM Amps
On Fri, 9 Jan 2009, Roger wrote: Date: Fri, 9 Jan 2009 17:33:27 + (UTC) From: Roger vrsculp...@hotmail.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: emc-users@lists.sourceforge.net Subject: [Emc-users] 5i20/7i43 Pico's PWM Amps Is anyone using Jon's (Pico Systems) PWM servo amps with the Mesa 5i20 or 7i43? If so could you please post your ini files to postbin.com . I'm interested in converting from Mach3 Gecko's to EMC PWM and would like to see a working configuration. Thanks, Roger I think Anders Wallin has such a combination... Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5i20/7i43 Pico's PWM Amps
snip Is anyone using Jon's (Pico Systems) PWM servo amps with the Mesa 5i20 or 7i43? If so could you please post your ini files to postbin.com . I'm interested in converting from Mach3 Gecko's to EMC PWM and would like to see a working configuration. Thanks, Roger I think Anders Wallin has such a combination... http://www.anderswallin.net/2008/09/servo-setup/ one of the intersting blog entries from his site. Check the others as well. Regards, Alex snip - except Bunny, wouldn't dream of snipping Bunny (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5i20/7i43 Pico's PWM Amps
Roger wrote: Is anyone using Jon's (Pico Systems) PWM servo amps with the Mesa 5i20 or 7i43? If so could you please post your ini files to postbin.com . I'm interested in converting from Mach3 Gecko's to EMC PWM and would like to see a working configuration. Well, of course, you could also use the Pico Systems Universal PWM Controller. When you deal with the extra support stuff needed for the Mesa board, I don't think there is any price advantage with them. I have some config file sets on my web page at http://pico-systems.com/codes/univpwm/ This is a 4-axis mill setup. You can't actually run this without hardware, the driver will not detect the board and will terminate. Jon -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
