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cool, thanks alot. do you happen to know what documents actually explain that, I cant find it anywhere...

thanks for the input froz, but how does the temp offset interfere with the sa-vp reading, not sure that I have encountered that.......

hey,

does anybody know why when you configure a new johnson VMA there is a default temp offset of -1.5, are their sensors setup to accept that offset and read correctly out of the box, or should...

thanks guys, this was basically a hypothetical question,what auto pilot said was basically what I was getting at, if the pressure from each pump is evenly displaced, then you would think that where...

If you have two pumps in a condenser water loop, and one pump (they are identical) is operating at say 50 amps, while the other is at say 40 amps, (They are both receiving a command of 100%) does...

Thanks nyrb, that was exactly what I needed!! I appreciate you taking the time to really explain it, and thank you to the other posters as well. cant wait to share with everybody at work, I have a...

well, I guess im thinking of a situation where you have a vdc output on a controller and a end device that wants to see a ma signal, and you need to fix it asap. and when you say the extent of your...

thanks alot , havent had a chance to to go to the links yet, but im sure that will clear up some questions. Its amazing to me how many people say that it works both ways, how can so many people be...

I was wondering if anyone would mind taking the time to explain using resistors to change signal types. Im a little confused as to which way they can be used, i.e they can change ma signal to vdc...

makes sense! thanks alot

thanks alot guys, it seems that changing the set point as opposed to the AI actually does work faster......weird

Hey guys,

I had to commission some PIUs today, johnson controls VMA controllers. Im kind of new to them (and control's in general I guess..2 yrs). when I override the fan or heat on they come on...