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Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use?

on 2012-11-08 18:53:28 UTC
Pico-Systems




________________________________
From: Alan <writetoalan@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com
Sent: Wednesday, November 7, 2012 1:14 PM
Subject: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use?

 
I have a few basic questions that I'd thought I'd solicit thoughts on... Before I state these, let me define the project. It is the conversion of a Hurco KMB-1 mill. I will be using the original Electro-Craft brushed servos, LinuxCNC, and Granite Devices servo amps.

Now for the questions:

1. The Granite Devices amps can work in either step or analog mode. I plan on using a Mesa Electronics FPGA board so a step generator should yield good results. With that in mind, which way is best, analog or step/direction? Encoders will be used in either case; with step/direction the drive will monitor for stall and with analog the encoders will be used for feedback to both the drive and the control.

2. Question #1 helps drive which Mesa interface board to use, but I thought I'd ask what people have as their favorite Mesa setups, and why.

3. Is there a product *other* than Mesa's that people might recommend, and why.

Thanks!




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Discussion Thread

Alan 2012-11-07 10:14:07 UTC LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? jeremy youngs 2012-11-07 17:02:47 UTC Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? Jon Elson 2012-11-07 17:57:35 UTC Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? jeremy youngs 2012-11-07 18:05:37 UTC Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? Les Newell 2012-11-08 00:00:59 UTC Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? Jon Elson 2012-11-08 07:54:08 UTC Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? jeremy youngs 2012-11-08 07:59:13 UTC Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? Taslim Hyatali 2012-11-08 18:53:28 UTC Re: [CAD_CAM_EDM_DRO] LinuxCNC: if I can choose step/dir or analog on my amps, which should I use? Alan 2012-11-11 08:09:12 UTC Re: LinuxCNC: if I can choose step/dir or analog on my amps, which should I use?