Can you just use a PID those work well in kit control. Or a reset??
Does anyone have refrigerant pressure temperature logic blocks or something they can share with me? I need to control exv's from superheat directly in the jace. I was trying to play around with writing something in the program editor but my skill level is not up to par with line by line code.
Can you just use a PID those work well in kit control. Or a reset??
Yea I am going to use a pid but I need the chart to know what the superheat is. I would need 50 reset blocks to try to make this so I'd rather write a custom module
Any suction pressure transducers?? Suction line temp?? This could all help. R-22?? 410??
I have a program object for R22.
Go Rangers!
Lane I would be interested in that program too
Thanks
Kevin
Email in my profile
Sent from my DROID RAZR using Tapatalk 2
Controls is a lifestyle not a job
Shoot me an email and I will send it to you. It took me forever to find the right equation for this and then when I did I had trouble getting it in the program object and functioning correctly. I have to give the final credit to Ron aka Codewriter for getting it completed for me. You can set the input to PSIG,PSIA, or KPA.
Go Rangers!
I would be interested in a copy as well.
tia
I don't see your email listed Matrix. Whoever wants it just send me an email.
Go Rangers!
I would appreciate a copy, thank you.
Me too, I would appreciate a copy of this program object. Thank you!
This can be done with kitControl math blocks and a little help from excel's Trendline feature. Copy and paste the temperature vs pressure values in to excel. Convert to PSIA and Deg R (curve fitting works better). Create a graph and try the various Trendlines until you get a good fit. I came up with this for R134a. y = 0.00003561 x^3 - 0.01308796 x^2 + 2.12259171 x + 421.11910836 With x = PSIA and a range of 20.7 to 149.7 and y = deg R.
UA LU 562
Could I get a copy of the program objects also, email is in my profile, Thank you.
1 + 1 = 3 ( *** for very large values of 1)
...everybody wants a box of chocolates and long stemmed rose
Be brave. You cannot get eaten by an imaginary tiger.
Thanks. For 134a:
y = 9.20621E-10 x^5 - 6.26875E-07 x^4 + 1.65989E-04 x^3 - 2.26106E-02 x^2 + 2.14070E+00 x - 1.32707E+01
Input pressure range (PSIA) 14.7 to 244.7. Output °R. This turns out to be quite a good fit with R squared = 0.9999
Last edited by DaveCR; 01-27-2013 at 10:44 AM. Reason: punctuation
UA LU 562
I've been attempting to set this up all morning for R410A and I can't seem to figure out for the life of me how to get it to output properly. I know lynxspring has an actual conversion block in their lynxKitControl, but unfortunately it only works with their certificate on the JACE.
Anyone else sucessfully made this work for 410?
Friends don't let friends Lon.
I'll send you an email here in just a second. Thanks
Friends don't let friends Lon.