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At 07:09 PM 10/1/2020, lee@automate-it.com wrote:
>I want to operate two solid-state relays simultaneously (one for a
110V circuit,
>the other for 220V) from a single PID. I had thought I would just
wire them in
>parallel from the PID, but a bit of poking around the interwebs suggests
>otherwise. So I sketched up this drawing for two SSRs in series
with a PID. Does
>this look correct for this situation? Any suggestions appreciated!
Lee,
I don't know where you got the idea that putting them in parallel
would not work.
Nor do I know if a PID is really the correct tool to use here.
You don't really say what or why you are trying to control.
In series, both solid state relays would have to close at the same
time to cause and both load would be energized. Not know what your
are trying to do, I'd
think you'd want to be able to turn either one or off regardless of
the state of the
other relay, which would require a seperate output line for each ssr.
You might be better off using one of the micro controllers like a
Raspberry pi controller, Arduino, or the BASIC stamp.
John
John T. Blair WA4OHZ email: jblair1948@cox.net
Va. Beach, Va Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1106)
75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/morgan
Bricklin: www.bricklin.org
If you can read this - Thank a teacher!
If you are reading it in English - Thank a Vet!!
From Dennis Prager - The American Trilogy:
e pluribus Unum, "from many, one."
In God We Trust
Liberty - the power of choosing, thinking, and acting for
oneself; freedom from control or restriction
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<font size=3>At 07:09 PM 10/1/2020, lee@automate-it.com wrote:<br><br>
>I want to operate two solid-state relays simultaneously (one for a
110V circuit,<br>
>the other for 220V) from a single PID. I had thought I would just
wire them in <br>
>parallel from the PID, but a bit of poking around the interwebs
suggests <br>
>otherwise. So I sketched up this drawing for two SSRs in series with
a PID. Does <br>
>this look correct for this situation? Any suggestions
appreciated!<br><br>
Lee,<br><br>
I don't know where you got the idea that putting them in parallel would
not work.<br>
Nor do I know if a PID is really the correct tool to use here.<br><br>
You don't really say what or why you are trying to control.<br><br>
In series, both solid state relays would have to close at the same time
to cause and both load would be energized. Not know what your are
trying to do, I'd <br>
think you'd want to be able to turn either one or off regardless of the
state of the<br>
other relay, which would require a seperate output line for each
ssr.<br><br>
You might be better off using one of the micro controllers like a
Raspberry pi controller, Arduino, or the BASIC stamp.<br><br>
John<br><br>
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<br>
<div>John T. Blair WA4OHZ email:
jblair1948@cox.net</div>
<div>Va. Beach,
Va
Phone: (757) 495-8229</div>
<br>
<div> 48
TR1800 48 #4 Midget 65 Morgan 4/4
Series V (B1106)</div>
<div> 75 Bricklin SV1 (#0887)
77 Spitfire 71 Saab Sonett III</div>
<div>
65 Rambler Classic</div>
<br>
<div>Morgan:
<a href="http://www.team.net/morgan"; EUDORA=AUTOURL>
www.team.net/morgan</a></div>
<div>Bricklin:
<a href="http://www.bricklin.org/"; EUDORA=AUTOURL>www.bricklin.org</a>
</div>
<br>
<div>If you can read
this
- Thank a teacher!</div>
<div>If you are reading it in English - Thank a Vet!!</div>
<br>
<div> From Dennis Prager - The American Trilogy:</div>
<div> e pluribus Unum, "from many,
one."</div>
<div> In God We Trust</div>
<div> Liberty - the power of
choosing, thinking, and acting for </div>
<div>
oneself; freedom from control or
restriction </div>
<br>
<br>
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