On Tue, 6 Sep 2011, Andy Pugh wrote: > Date: Tue, 6 Sep 2011 15:47:01 +0100 > From: Andy Pugh <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] Servo PSU > > > > On 6 Sep 2011, at 15:21, Don Stanley <[email protected]> wrote: > >> The transformer will isolate the common return for you so >> your equipment will stay at earth ground and you won't glow in the dark when >> you touch it. > > Which transformer? > > Does the Drive care that the DC is not referenced to logic 0V?
Not the 8I20 (or the 7I29) these both have 2500V isolation of V- from ground The 8I20 has 3750V isolation from V- to control side common 8I20 V- is AC HF GND however (2200 PF from V- to EARTH GND) so need its EARTH GND/HEATSINK tied to EARTH GND > > > ------------------------------------------------------------------------------ > Special Offer -- Download ArcSight Logger for FREE! > Finally, a world-class log management solution at an even better > price-free! And you'll get a free "Love Thy Logs" t-shirt when you > download Logger. Secure your free ArcSight Logger TODAY! > http://p.sf.net/sfu/arcsisghtdev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsisghtdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
