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Discussion Groups | BasicX | Re: Industrial Bx-24???
Discussion forum for the BasicX family of microcontroller chips.
Industrial Bx-24??? - heliocntrc - Jan 6 12:18:02 2007
Hi
I think i miss something.... The new Bx-24 uses 24V as power supply.
But what good is that if the inputs still cannot tolerate 24V?
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
I think i miss something.... The new Bx-24 uses 24V as power supply.
But what good is that if the inputs still cannot tolerate 24V?
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Industrial Bx-24??? - mr_tentacle_too - Jan 6 18:07:56 2007
Just curious - what sort of sensor or device do you want to attach that
presents/consumes a 24V signal? Current loop, or ...?
Allowing external power up to 24v makes it easy to incorporate into a
wider range of solutions without additional external regulation.
The processor is still an AVR, and since move users don't need 24v
signal conditioning I would guess cost alone would dictate leaving it
out.
--- In b...@yahoogroups.com, "heliocntrc" wrote:
>
> Hi
> I think i miss something.... The new Bx-24 uses 24V as power supply.
> But what good is that if the inputs still cannot tolerate 24V?
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
presents/consumes a 24V signal? Current loop, or ...?
Allowing external power up to 24v makes it easy to incorporate into a
wider range of solutions without additional external regulation.
The processor is still an AVR, and since move users don't need 24v
signal conditioning I would guess cost alone would dictate leaving it
out.
--- In b...@yahoogroups.com, "heliocntrc"
>
> Hi
> I think i miss something.... The new Bx-24 uses 24V as power supply.
> But what good is that if the inputs still cannot tolerate 24V?
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Industrial Bx-24??? - heliocntrc - Jan 6 19:47:59 2007
I guess so... It's just that most industrial sensors (Proximities,
Photocells etc.) provide 24V output. In order to incorporate them in
to a Bx-24 based board i will have to use Optocouplers(which is a good
practice anyway)and i dont think that the 80mA that is left from the
Bx's Voltage regulator is sufficient to drive all the opto's i need
for all the inputs and outputs of Bx. Hence i will need to use an
additional step down converter to transform 24V to 5V thus increasing
the cost.....
--- In b...@yahoogroups.com, "mr_tentacle_too"
wrote:
>
> Just curious - what sort of sensor or device do you want to attach that
> presents/consumes a 24V signal? Current loop, or ...?
>
> Allowing external power up to 24v makes it easy to incorporate into a
> wider range of solutions without additional external regulation.
>
> The processor is still an AVR, and since move users don't need 24v
> signal conditioning I would guess cost alone would dictate leaving it
> out.
>
> --- In b...@yahoogroups.com, "heliocntrc" wrote:
> >
> > Hi
> > I think i miss something.... The new Bx-24 uses 24V as power supply.
> > But what good is that if the inputs still cannot tolerate 24V?
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Photocells etc.) provide 24V output. In order to incorporate them in
to a Bx-24 based board i will have to use Optocouplers(which is a good
practice anyway)and i dont think that the 80mA that is left from the
Bx's Voltage regulator is sufficient to drive all the opto's i need
for all the inputs and outputs of Bx. Hence i will need to use an
additional step down converter to transform 24V to 5V thus increasing
the cost.....
--- In b...@yahoogroups.com, "mr_tentacle_too"
wrote:
>
> Just curious - what sort of sensor or device do you want to attach that
> presents/consumes a 24V signal? Current loop, or ...?
>
> Allowing external power up to 24v makes it easy to incorporate into a
> wider range of solutions without additional external regulation.
>
> The processor is still an AVR, and since move users don't need 24v
> signal conditioning I would guess cost alone would dictate leaving it
> out.
>
> --- In b...@yahoogroups.com, "heliocntrc"
> >
> > Hi
> > I think i miss something.... The new Bx-24 uses 24V as power supply.
> > But what good is that if the inputs still cannot tolerate 24V?
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Industrial Bx-24??? - mr_tentacle_too - Jan 6 22:57:54 2007
I understand. I assume by "Extra stepdown" you mean driving the
BX24 from your own regulated 5V source so you have the current to
drive the optos.
--- In b...@yahoogroups.com, "heliocntrc" wrote:
>
> I guess so... It's just that most industrial sensors (Proximities,
> Photocells etc.) provide 24V output. In order to incorporate them in
> to a Bx-24 based board i will have to use Optocouplers(which is a
good
> practice anyway)and i dont think that the 80mA that is left from the
> Bx's Voltage regulator is sufficient to drive all the opto's i need
> for all the inputs and outputs of Bx. Hence i will need to use an
> additional step down converter to transform 24V to 5V thus
increasing
> the cost.....
> --- In b...@yahoogroups.com, "mr_tentacle_too"
> wrote:
> >
> > Just curious - what sort of sensor or device do you want to
attach that
> > presents/consumes a 24V signal? Current loop, or ...?
> >
> > Allowing external power up to 24v makes it easy to incorporate
into a
> > wider range of solutions without additional external regulation.
> >
> > The processor is still an AVR, and since move users don't need
24v
> > signal conditioning I would guess cost alone would dictate
leaving it
> > out.
> >
> > --- In b...@yahoogroups.com, "heliocntrc" wrote:
> > >
> > > Hi
> > > I think i miss something.... The new Bx-24 uses 24V as power
supply.
> > > But what good is that if the inputs still cannot tolerate 24V?
> > >
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
BX24 from your own regulated 5V source so you have the current to
drive the optos.
--- In b...@yahoogroups.com, "heliocntrc"
>
> I guess so... It's just that most industrial sensors (Proximities,
> Photocells etc.) provide 24V output. In order to incorporate them in
> to a Bx-24 based board i will have to use Optocouplers(which is a
good
> practice anyway)and i dont think that the 80mA that is left from the
> Bx's Voltage regulator is sufficient to drive all the opto's i need
> for all the inputs and outputs of Bx. Hence i will need to use an
> additional step down converter to transform 24V to 5V thus
increasing
> the cost.....
> --- In b...@yahoogroups.com, "mr_tentacle_too"
> wrote:
> >
> > Just curious - what sort of sensor or device do you want to
attach that
> > presents/consumes a 24V signal? Current loop, or ...?
> >
> > Allowing external power up to 24v makes it easy to incorporate
into a
> > wider range of solutions without additional external regulation.
> >
> > The processor is still an AVR, and since move users don't need
24v
> > signal conditioning I would guess cost alone would dictate
leaving it
> > out.
> >
> > --- In b...@yahoogroups.com, "heliocntrc"
> > >
> > > Hi
> > > I think i miss something.... The new Bx-24 uses 24V as power
supply.
> > > But what good is that if the inputs still cannot tolerate 24V?
> > >
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Industrial Bx-24??? - heliocntrc - Jan 7 4:17:30 2007
No... I only have 24V Regulated available. Hence i need 5V regulated
also to drive the Bx's side of the optos(the Bx will use 24V for power
supply). This is where the extra step down comes in..... By the way
how much current does any input draw?
--- In b...@yahoogroups.com, "mr_tentacle_too"
wrote:
>
> I understand. I assume by "Extra stepdown" you mean driving the
> BX24 from your own regulated 5V source so you have the current to
> drive the optos.
>
> --- In b...@yahoogroups.com, "heliocntrc" wrote:
> >
> > I guess so... It's just that most industrial sensors (Proximities,
> > Photocells etc.) provide 24V output. In order to incorporate them in
> > to a Bx-24 based board i will have to use Optocouplers(which is a
> good
> > practice anyway)and i dont think that the 80mA that is left from the
> > Bx's Voltage regulator is sufficient to drive all the opto's i need
> > for all the inputs and outputs of Bx. Hence i will need to use an
> > additional step down converter to transform 24V to 5V thus
> increasing
> > the cost.....
> >
> >
> > --- In b...@yahoogroups.com, "mr_tentacle_too"
> > wrote:
> > >
> > > Just curious - what sort of sensor or device do you want to
> attach that
> > > presents/consumes a 24V signal? Current loop, or ...?
> > >
> > > Allowing external power up to 24v makes it easy to incorporate
> into a
> > > wider range of solutions without additional external regulation.
> > >
> > > The processor is still an AVR, and since move users don't need
> 24v
> > > signal conditioning I would guess cost alone would dictate
> leaving it
> > > out.
> > >
> > > --- In b...@yahoogroups.com, "heliocntrc" wrote:
> > > >
> > > > Hi
> > > > I think i miss something.... The new Bx-24 uses 24V as power
> supply.
> > > > But what good is that if the inputs still cannot tolerate 24V?
> > > >
> > >
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
also to drive the Bx's side of the optos(the Bx will use 24V for power
supply). This is where the extra step down comes in..... By the way
how much current does any input draw?
--- In b...@yahoogroups.com, "mr_tentacle_too"
wrote:
>
> I understand. I assume by "Extra stepdown" you mean driving the
> BX24 from your own regulated 5V source so you have the current to
> drive the optos.
>
> --- In b...@yahoogroups.com, "heliocntrc"
> >
> > I guess so... It's just that most industrial sensors (Proximities,
> > Photocells etc.) provide 24V output. In order to incorporate them in
> > to a Bx-24 based board i will have to use Optocouplers(which is a
> good
> > practice anyway)and i dont think that the 80mA that is left from the
> > Bx's Voltage regulator is sufficient to drive all the opto's i need
> > for all the inputs and outputs of Bx. Hence i will need to use an
> > additional step down converter to transform 24V to 5V thus
> increasing
> > the cost.....
> >
> >
> > --- In b...@yahoogroups.com, "mr_tentacle_too"
> > wrote:
> > >
> > > Just curious - what sort of sensor or device do you want to
> attach that
> > > presents/consumes a 24V signal? Current loop, or ...?
> > >
> > > Allowing external power up to 24v makes it easy to incorporate
> into a
> > > wider range of solutions without additional external regulation.
> > >
> > > The processor is still an AVR, and since move users don't need
> 24v
> > > signal conditioning I would guess cost alone would dictate
> leaving it
> > > out.
> > >
> > > --- In b...@yahoogroups.com, "heliocntrc"
> > > >
> > > > Hi
> > > > I think i miss something.... The new Bx-24 uses 24V as power
> supply.
> > > > But what good is that if the inputs still cannot tolerate 24V?
> > > >
> > >
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Industrial Bx-24??? - jaynason - Jan 18 17:17:29 2007
Hello,
I recommend using a voltage regulator to step down the 24V incoming
power to drive the TTL side of your IO drivers.
Here is a good link for the data sheet of a LM317 (delivering up to
1.5 amps at whatever voltage you want):
http://www.onsemi.com/pub/Collateral/LM317-D.PDF
Reference that document: For 24V in and 5V out, you will want R1 to
be 240 Ohms and R2 to be (5 - 1.25)*240/1.25 = 720 Ohms.
Hope that helps...
--- In b...@yahoogroups.com, "heliocntrc" wrote:
>
> No... I only have 24V Regulated available. Hence i need 5V
regulated
> also to drive the Bx's side of the optos(the Bx will use 24V for
power
> supply). This is where the extra step down comes in..... By the way
> how much current does any input draw?
> --- In b...@yahoogroups.com, "mr_tentacle_too"
> wrote:
> >
> > I understand. I assume by "Extra stepdown" you mean driving the
> > BX24 from your own regulated 5V source so you have the current to
> > drive the optos.
> >
> > --- In b...@yahoogroups.com, "heliocntrc" wrote:
> > >
> > > I guess so... It's just that most industrial sensors
(Proximities,
> > > Photocells etc.) provide 24V output. In order to incorporate
them in
> > > to a Bx-24 based board i will have to use Optocouplers(which is
a
> > good
> > > practice anyway)and i dont think that the 80mA that is left
from the
> > > Bx's Voltage regulator is sufficient to drive all the opto's i
need
> > > for all the inputs and outputs of Bx. Hence i will need to use
an
> > > additional step down converter to transform 24V to 5V thus
> > increasing
> > > the cost.....
> > >
> > >
> > > --- In b...@yahoogroups.com, "mr_tentacle_too"
> > > wrote:
> > > >
> > > > Just curious - what sort of sensor or device do you want to
> > attach that
> > > > presents/consumes a 24V signal? Current loop, or ...?
> > > >
> > > > Allowing external power up to 24v makes it easy to
incorporate
> > into a
> > > > wider range of solutions without additional external
regulation.
> > > >
> > > > The processor is still an AVR, and since move users don't
need
> > 24v
> > > > signal conditioning I would guess cost alone would dictate
> > leaving it
> > > > out.
> > > >
> > > > --- In b...@yahoogroups.com, "heliocntrc"
wrote:
> > > > >
> > > > > Hi
> > > > > I think i miss something.... The new Bx-24 uses 24V as
power
> > supply.
> > > > > But what good is that if the inputs still cannot tolerate
24V?
> > > > >
> > > >
> > >
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
I recommend using a voltage regulator to step down the 24V incoming
power to drive the TTL side of your IO drivers.
Here is a good link for the data sheet of a LM317 (delivering up to
1.5 amps at whatever voltage you want):
http://www.onsemi.com/pub/Collateral/LM317-D.PDF
Reference that document: For 24V in and 5V out, you will want R1 to
be 240 Ohms and R2 to be (5 - 1.25)*240/1.25 = 720 Ohms.
Hope that helps...
--- In b...@yahoogroups.com, "heliocntrc"
>
> No... I only have 24V Regulated available. Hence i need 5V
regulated
> also to drive the Bx's side of the optos(the Bx will use 24V for
power
> supply). This is where the extra step down comes in..... By the way
> how much current does any input draw?
> --- In b...@yahoogroups.com, "mr_tentacle_too"
> wrote:
> >
> > I understand. I assume by "Extra stepdown" you mean driving the
> > BX24 from your own regulated 5V source so you have the current to
> > drive the optos.
> >
> > --- In b...@yahoogroups.com, "heliocntrc"
> > >
> > > I guess so... It's just that most industrial sensors
(Proximities,
> > > Photocells etc.) provide 24V output. In order to incorporate
them in
> > > to a Bx-24 based board i will have to use Optocouplers(which is
a
> > good
> > > practice anyway)and i dont think that the 80mA that is left
from the
> > > Bx's Voltage regulator is sufficient to drive all the opto's i
need
> > > for all the inputs and outputs of Bx. Hence i will need to use
an
> > > additional step down converter to transform 24V to 5V thus
> > increasing
> > > the cost.....
> > >
> > >
> > > --- In b...@yahoogroups.com, "mr_tentacle_too"
> > > wrote:
> > > >
> > > > Just curious - what sort of sensor or device do you want to
> > attach that
> > > > presents/consumes a 24V signal? Current loop, or ...?
> > > >
> > > > Allowing external power up to 24v makes it easy to
incorporate
> > into a
> > > > wider range of solutions without additional external
regulation.
> > > >
> > > > The processor is still an AVR, and since move users don't
need
> > 24v
> > > > signal conditioning I would guess cost alone would dictate
> > leaving it
> > > > out.
> > > >
> > > > --- In b...@yahoogroups.com, "heliocntrc"
wrote:
> > > > >
> > > > > Hi
> > > > > I think i miss something.... The new Bx-24 uses 24V as
power
> > supply.
> > > > > But what good is that if the inputs still cannot tolerate
24V?
> > > > >
> > > >
> > >
>
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )