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<p class=MsoNormal><span style='color:#1F497D'>David,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I had thought of this problem so
I tried using a ‘parameters’ to create a second signal opp = 1 - control_signal
that I’ve set as an input on the other port but it was still useless.
Fortunately, it worked when I changed to a Type11-f. So your advice would be to
use the standard types as often as possible (I am an new TRNSys user)?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thank you for your helpful response,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Best regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Jace LE GALL<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>BYME Engineering Hub<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> David Bradley
[mailto:bradley@tess-inc.com] <br>
<b>Sent:</b> Wednesday, May 05, 2010 5:45 AM<br>
<b>To:</b> LE GALL, Jace<br>
<b>Cc:</b> trnsys-users@cae.wisc.edu<br>
<b>Subject:</b> Re: [TRNSYS-users] PID Controller<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Jace,<br>
There is no fundamental incompatibility. Type647 expects a value between
0 and 1 and the way you have your PID set up, it sounds like it is outputting a
value between 0 and 1. Bear in mind that Type647 does not automatically divert
the remainder of the flow to the other port. If you have two outlets and all
the flow that does not go one direction automatically goes the other way, you
might consider using Type11-f. And no, this is not the first time I have ever
recommended using a standard Type in place of a TESS Type... :-) <br>
Best,<br>
David<br>
<br>
<br>
<o:p></o:p></p>
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