View Full Version : Multistack Interface
12-29-2004, 11:16 PM
I was looking for a LON interface to a Multistack but didn't find one.
I see the ALC BACnet portal, but since the customer wants to purge their ALC stuff that's a no-go.
Anybody go a different route with these units?
12-30-2004, 05:34 PM
Looks like BACnet is it, have you contacted them?
12-31-2004, 06:43 PM
Sysint, I can be of absolutely no help to you. But can you explain something to me? What is ALC and what is meant by purging it?Hope this isnt a reeeally stupid question.Im trying to learn more about DDC and networking.Picking up what I can where I can. Also is this a Carel contoller. I've seen multistack uses carel in their chillers with turbocor compressors. Thanks for any info.
12-31-2004, 07:08 PM
787- ALC "Automated Logic Corporation"
By "purging" I mean that they can't stand their ALC stuff and want to get rid of it all.
They just re-badge this controller for use as a gate. I will check into this Carel controller.... so I guess you are helping already. It may be that this Carel controller is some ASCII or Modbus controller, in which case I wouldn't need the ALC Portal. (which is probably a gateway to BACnet.
01-02-2005, 12:29 AM
I'm worse off than the 787 Guy. You guys are brilliant, I think. What I mean is, as a wrench turner I have a hard time following. But, I'll keep reading & hopefully I'll be able to pick up on a thing or two.
01-03-2005, 07:22 PM
thanks for clearing that up for me. The answer wasn't any where near as technical as I thought it would be:)
01-07-2005, 07:13 PM
Well - called Multistack directly.
Apparently they are completely unaware of what you can do with Lonworks and think there is a point restriction.
I suppose if you are using an ALC BACnet Portal that would be the response.
At this point I don't know if they are uninformed, lazy, or BACnetisized past reason.
I do know they aren't getting any military jobs anytime soon. Lonworks only....
Gave them a reference for a LON controller interface up to 4000 points. That should be more than enough for their little chiller. Until then it's Fieldserver - or spec another chiller.
01-10-2005, 12:17 AM
Is this an air or water cooled multi-stack? Actually the air cooled models are called "airstack". The AC and Turbocor models use the Carel Pco2 controller.
The pco2 has a LON card available (I have used it), but multistack has to write the code for the controller to work with it. It is not just a matter of popping in a card.
The nice thing of the LON interface for the Pco2 is it is just a card that plugs into the obody of the controller. With modbus, BACnet, and the other gateways, you have to use a serial card that plugs into the body that is then wired into the gateway.
If this is not a Carel powered chiller, then fergit it, can't help.
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