Recent content by 86turbodsl

In for the win!

I'm in!

This is awesome! Love Matt Smith. The latest album is incredible.

MFWINZLOW - You've got great taste in music. Kudos.

Epica - Never Enough https://www.youtube.com/watch?v=RT9RcUgAbgE

But those are not commonly controllable via modbus either.

Ok, if there's no small ones, how linear is flow at lower speeds? Any pump curves? VFD would typically run down to maybe 20-30hz so pump flow at half speed would need to be known. if no info is available, i might look at a pump head and custom machining to a 3phase motor of my choice.

Walter, Can you recommend a pump very similar to the 809 or whatever pump most of the guys here are using but with 3phase input? I'm thinking about using a single pump on a 3-tier system but think i might want to use VFD control so i can vary the pump speed. I did find some large pumps in...

I'm soooo in...

In for the win.

Cant wait to see your progress!

packaged compressor units aren't that hard to come by. Look at Klondike fridges. I'm considering building one for my house, that would also incorporate corny storage. Packaged evaporator, condensor unit, lineset, done.

M.E. huh? me too. I'm torn between the arduino or the rpi. I'll check into the HMI. I haven't purchased anything yet, i'm hoping to engineer the whole enchilada before i start buying/building. You know the old saying ... fail to plan, plan to fail. :)

I'd like to avoid the expensive add in slot cards that only add 4 temps. I have a DL06 with 3 of them controlling my HVAC in my house, and even buying cards on ebay i have over 500 into just the plc. So i'd like to stay away from add in slot cards. spend the money on motorized ball valves and...

Ok, some research looks like arduino, raspberry pi, and similar controllers talking modbus might be a good way to go.