--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Benny,
>
> Yes That should work also.  KFlop could provide the 3.3V.
>
> TK
>
>
>
>
> ________________________________
> From: likleong <likleong@...>
> To: DynoMotion@yahoogroups.com
> Sent: Tue, December 21, 2010 4:20:13 AM
> Subject: [DynoMotion] Re: KFlop interface with Mitsubishi MR-J2S servo system
>
>  
>
> Hi TK,
>
> I am using the MR-J2S-40A, they have same input pin but it accept step/dir
> input. For your suggestion, is it possible to use the LVTTL output instead of
> open collector? Then, I can save a 3.3V DC source.
>
> Best regards,
> Benny
> --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> >
> > Hi Benny,
> >
> > You didn't include a link to the manual but I found this:
> >
> > http://www.autocontcontrol.cz/rs/download/manual/Manual_MR-J2S-CL_GB.pdf
> >  
> > Is that your unit?
> >
> > I don't think that drive will accept Step/Dir inputs.
> >
> > It only accepts quadrature input from a Manual Pulse Generator.  KFlop can
> >only
> >
> > output Step/Dir not Quadrature.
> >
> > But electrically it could be connected as:
> >
> > Leave OPC disconnected.
> > Connect PG and NG to 3.3V
> > Connect KFLOP Open Collector to PP
> > Connect KFLOP Open Collector to NP
> >
> > Regards
> > TK
> >
> >
> >
> >
> > ________________________________
> > From: likleong <likleong@>
> > To: DynoMotion@yahoogroups.com
> > Sent: Mon, December 20, 2010 10:59:14 PM
> > Subject: [DynoMotion] Re: KFlop interface with Mitsubishi MR-J2S servo system
> >
> >  
> > Hi TK,
> >
> > The related manual pages have been uploaded to Photo section, could you please
>
> > have a look. Thanks.
> >
> > Best regards,
> > Benny
> >
> > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > >
> > > Hi Benny,
> > >
> > > Do you have a manual?  What pins are these?
> > >
> > > If you have access to the Anode connect it to 3.3V through a 200ohm
> > >
> > > TK
> > >
> > >
> > >
> > >
> > > ________________________________
> > > From: likleong <likleong@>
> > > To: DynoMotion@yahoogroups.com
> > > Sent: Mon, December 20, 2010 7:28:38 PM
> > > Subject: [DynoMotion] Re: KFlop interface with Mitsubishi MR-J2S servo
> system
> > >
> > >  
> > > Hi TK,
> > >
> > > Is there any way to solve this problem? Thanks.
> > >
> > > Best regards,
> > > Benny
> > >
> > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > >
> > > > Hi Benny,
> > > >
> > > > The problem is that when the KFlop output goes "open" it is still diode
> > >clamped
> > >
> > > >
> > > > to 3.3V and can't rise above ~4V.
> > > >
> > > > So when the KFlop output goes "open" and "closed" the output pin will
> >switch
> >
> >
> > > > between 4V and 0V.ÃÆ'‚  Assuming an opto diode drop of 1V the 1.2K
> >resistor
> >
> > >will
> > >
> > > > "see" either 23V or 19V.ÃÆ'‚  So the current will be either 19ma or
> >16ma.ÃÆ'‚ 
> >
> > >The
> > >
> > > >opto
> > > >
> > > > will be on in both cases.ÃÆ'‚  Also KFlop outputs are limited to 16ma.
> > > >
> > > > Regards
> > > > TKÃÆ'‚ 
> > > >
> > > >
> > > >
> > > >
> > > > ________________________________
> > > > From: likleong <likleong@>
> > > > To: DynoMotion@yahoogroups.com
> > > > Sent: Mon, December 20, 2010 5:23:07 PM
> > > > Subject: [DynoMotion] Re: KFlop interface with Mitsubishi MR-J2S servo
> > system
> > > >
> > > > ÃÆ'‚ 
> > > > Hi TK,
> > > >
> > > > The 24V source is not directly connected to the opto-coupler, there is a
> > > > resister (1.2K) between then for bias purpose, just like the following
> > > diagram:
> > > >
> > > > R=1.2K opto-coupler
> > > >
> > > > 24V >-----^^^^------|>|-----------o Step
> > > >
> > > > (Connected to Kflop OC O/P)
> > > >
> > > > GND |-----------------------------o GND
> > > >
> > > > I think is should be okay, right? What I am worry about is the max current
>
> > >that
> > >
> > > >
> > > > the open collector output of Kflop can handle.
> > > >
> > > > Best regards,
> > > > Benny.
> > > >
> > > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > > >
> > > > > Hi Benny,
> > > > >
> > > > > No you can NOT connect 24V opto signals to KFlop Open collector
> > >outputs.ÃÆ'Æ'‚ÃÆ'‚ 
> > >
> > > >The
> > > >
> > > >
> > > > > outputs are diode clamped to the the 3.3V power, so they are limited to a
> >
> > >max
> > >
> > > >
> > > > >of
> > > > >
> > > > > ~4V.ÃÆ'Æ'‚ÃÆ'‚ ÃÆ'Æ'‚ÃÆ'‚  This works when driving
> >optosÃÆ'Æ'‚ÃÆ'‚ connected to
> >
> > >+5V.
> > > > >
> > > > > You didn't send any link to any Manuals forÃÆ'Æ'‚ÃÆ'‚ your
> >MR-J2S.ÃÆ'Æ'‚ÃÆ'‚ 
> >
> > >Or what you
> > >
> > > >are
> > > >
> > > > >trying
> > > > >
> > > > > to connect to. ÃÆ'Æ'‚ÃÆ'‚  But I did some searches and might
> >have found
> >
> > >something
> > >
> > > > > similar.ÃÆ'Æ'‚ÃÆ'‚  They seem to provide an additional
> >connection directly to
> >
> > >the
> > >
> > > >Anode
> > > >
> > > > >so
> > > > >
> > > > > a lower voltage could be used.
> > > > >
> > > > > Regards
> > > > > TK
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ________________________________
> > > > > From: likleong <likleong@>
> > > > > To: DynoMotion@yahoogroups.com
> > > > > Sent: Sun, December 19, 2010 11:03:10 PM
> > > > > Subject: [DynoMotion] KFlop interface with Mitsubishi MR-J2S servo
> system
> > > > >
> > > > > ÃÆ'Æ'‚ÃÆ'‚ 
> > > > > Hi TK,
> > > > >
> > > > > I would like to drive the MR-J2S servo system by KFlop open collector
> > >output,
> > >
> > > >
> > > > > according to servo system manual, the input side internal circuit look
> >like
> >
> > >
> > > >the
> > > >
> > > > >
> > > > > below diagram.
> > > > >
> > > > > R=1.2K opto-coupler
> > > > >
> > > > > 24V >-----^^^^------|>|-----------o Step
> > > > >
> > > > > (Open collector INPUT)
> > > > >
> > > > > GND |-----------------------------o GND
> > > > >
> > > > > I am not sure whether the open-collector output of KFlop can drive it or
>
> > >not,
> > >
> > > >I
> > > >
> > > > >
> > > > > am afraid the current may too high, do you have any idea about this?
> > >Thanks.
> > > > >
> > > > > Best regards,
> > > > > Benny
> > > > >
> > > >
> > >
> >
>