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Topic: More on PID setup Questions SSR? (4 msgs / 132 lines)
1) From: petzul
Hi Dan,
Do you mean like this one?http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category6328&item810407148&ssPageNameRK:MEBWA:ITLooks like the ones controlled by AC are a bit more expensive :(">http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&categoryB897&item809818256&rd=1or this one?http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category6328&item810407148&ssPageNameRK:MEBWA:ITLooks like the ones controlled by AC are a bit more expensive :(
Thanks,
PeterZ
Dan Bollinger wrote:
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2) From: Dan Bollinger
Both look like the right thing to me, but all the talk about 'zero =
switching' on the first is new to me. I have no idea what that is. It's =
certainly the right size for you.  The second is a Crydom, which I have =
used. This one is a brute, 90A at 480V.  Just the same, it will work for =
you, but the giant heatsink will get in your way. 
<Snip>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=42897&item=380=9818256&rd=1
<Snip>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=36328&item=381=0407148&ssPageName=STRK:MEBWA:IT
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whole transformer thing. You don't need it . Instead, buy a 110V input =
SSR and wire it like this:
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input.  
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to 
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relay 
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the 
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unit 
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luck. 
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that is 
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which 
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will 
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Not 
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Noise 
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a 24VAC/DC
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Or, use 24VDC
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data.
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a
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controller? This
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same as on
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PID.
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the Red TC
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here)
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the 'Line'.
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Attach the
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same size wire
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heater coil.
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power, otherwise
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to get
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need to know.
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the PID to
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output
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would
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Variac?
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figure out:
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list. I
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hopefully
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complex,
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arrrrgggghhh!
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vacations,
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3) From: petzul
Well, I am tempted to get the one with the heatsink already attached. 
The  only thing I am not sure of is will it overload the relay built 
into the PDI?
I am not sure what that contact rating is.
Ohhh, the 'relay output reverse action' can be toggled in the setup so 
it can be set as 'direct action'.
I really have to read the manual a few times here. There are so many 
terms that use words I know, but not sure how they are used here.
Almost like learning a different language!
It is not clear to me yet what different parts of the PDI the tables are 
referring to.
Dwight had me set some cycle time that was only adjustable in seconds, 
but the PDF file refers to times adjustable in tenths of a second.
You would think that something that is this complex and capable would 
have a few more switches and buttons on it!
Well, I guess I should be happy with 18 terminal connections on the back 
of it ;)
Thanks for your help,
PeterZ
Clearly in the dark now, here in LHC.
Dan Bollinger wrote:
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4) From: Dan Bollinger
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Peter, I doubt it, but I'd ask the engineers who designed the PID. 
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Reverse action will do fine for you.
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If it has autotune or self-tune, turn that on. That way you only have to =
set your TC choice, cycle time, and set point.  You can always learn as =
you go after that.


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