Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

Gene, I don't think these optos have anything to do with SSRs. These are not designed to pass power, just an open collector output logic circuit. The AC voltage is the rating of the breakdown voltage. jerry On Tue, Dec 15, 2015 at 10:09 AM, Gene Heskett wrote: > On Tuesday

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

On Tuesday 15 December 2015 13:20:52 Jerry Scharf wrote: > Gene, > > I don't think these optos have anything to do with SSRs. These are not > designed to pass power, just an open collector output logic circuit. > The AC voltage is the rating of the breakdown voltage. > > jerry > I may not have

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

Message - From: "Gene Heskett" <ghesk...@wdtv.com> To: emc-users@lists.sourceforge.net Sent: Tuesday, December 15, 2015 4:09:53 PM Subject: Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position) On Tuesday 15 December 2015 13:20:52 Jerry Schar

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

On Tuesday 15 December 2015 10:33:55 John Kasunich wrote: > On Mon, Dec 14, 2015, at 10:51 PM, Gene Heskett wrote: > > On Monday 14 December 2015 19:11:49 Jerry Scharf wrote: > > > Hi, > > > > > > Just did a super quick google search and came up with a fairchild > > > optocoupler hcpl2530 that

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

On Tuesday 15 December 2015 17:10:44 Todd Zuercher wrote: > Depending how it's bowed one of the best ways I've found to straighten > a slightly bowed piece of wood, is to dampen the concave side, then > lay that side flat on a concrete floor, and leave it sit for a few > hours or so. If it needs

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

On Mon, Dec 14, 2015, at 10:51 PM, Gene Heskett wrote: > On Monday 14 December 2015 19:11:49 Jerry Scharf wrote: > > > Hi, > > > > Just did a super quick google search and came up with a fairchild > > optocoupler hcpl2530 that will do 1Mbps. ~1.80 USD quantity 1. > > Isolation to 480v and good

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

FWIW, the iCoupler type things from ADI and Silicon Devices are faster, cheaper, better isolation, and lower powered than high speed optos. win, win, win, win;) On Mon, Dec 14, 2015 at 7:11 PM, Jerry Scharf wrote: > Hi, > > Just did a super quick google search and came up

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

Hi, Just did a super quick google search and came up with a fairchild optocoupler hcpl2530 that will do 1Mbps. ~1.80 USD quantity 1. Isolation to 480v and good common mode rejection. There are a number of devices in similar and better speeds. That's not anywhere near the top speed for

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

On Monday 14 December 2015 19:11:49 Jerry Scharf wrote: > Hi, > > Just did a super quick google search and came up with a fairchild > optocoupler hcpl2530 that will do 1Mbps. ~1.80 USD quantity 1. > Isolation to 480v and good common mode rejection. There are a number > of devices in similar and

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

On Monday 14 December 2015 16:01:26 Ben Potter wrote: > > Note that those setup and hold times are relative to the riseing > > edge of > > the (step?) pulse, and the next line is not so specific, but I expect > it needs to be checked by a dual trace scope for both > > > conditions > > I'm very

Re: [Emc-users] Optoisolater timings (was: Z axis stepper gradually losing position)

> Note that those setup and hold times are relative to the riseing edge of the (step?) pulse, and the next line is not so specific, but I expect it needs to be checked by a dual trace scope for both > conditions I'm very tempted to pull the G540 from the router and rig up a test bench test to