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Type: Posts; User: DaveCR

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  1. Replies
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    The product pages for their bacnet to modbus...

    The product pages for their bacnet to modbus devices don't mention auto discovery. Try manually adding a point to the jace and see what happens.
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    This machine, if it has an option card installed,...

    This machine, if it has an option card installed, can have its set point and demand limit controlled by 4-20mA (2-10Vdc) signals. The card was a popular option; most of the machines I've run across...
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    I think that A series machine is Trane Comm3/4...

    I think that A series machine is Trane Comm3/4 only. To be sure, give Trane a call and make sure you have the serial number handy.
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    187

    Those boards need an option card to do Lon.

    Those boards need an option card to do Lon.
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    111

    Put a 10k resistor in series with the slider....

    Put a 10k resistor in series with the slider. Make the AI point a 10k thermistor. Use a SPAN block to get your set point range.
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    We have done a few of these machines and Tranes...

    We have done a few of these machines and Tranes as well. The controllers have been Johnson programmables (DX9100, FX15, PCG26). To date we haven't had to deal with an EXV, but would probably use an...
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    The points, all of them, should come in off of...

    The points, all of them, should come in off of the .prn file. Try manually adding a device to the N2 network and, in the Resource File selection, browse to the appropriate .prn file. If the...
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    Usually an extra rung or two can be had by...

    Usually an extra rung or two can be had by condensing simple OR blocks. A Or B = C (two rungs) has an equivalent: Not A And Not B = Not C (one rung). If that isn't available, a Timer configured as...
  9. Thread: Niagara Facets

    by DaveCR
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    245

    I messed around with the facets approach a little...

    I messed around with the facets approach a little bit and got the same results you did. Since I generally like easy and brute force is OK, I'd simply append the units via an additional bound label....
  10. Thread: CASCADING

    by DaveCR
    Replies
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    215

    google variable frequency drive cascading....

    google variable frequency drive cascading. Danfoss has an outline that covers this control subject among others.
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    720

    Around here, it's "get out the chalk"

    Around here, it's "get out the chalk"
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    720

    Hmm, and all this time I thought we were all...

    Hmm, and all this time I thought we were all independently wealthy and did this for fun...
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    720

    Find a suitable wire sheet and drop in the...

    Find a suitable wire sheet and drop in the following components from the kitControl pallet: Util/MinMaxAvg and Math/Reset. Set up the MinMaxAvg block for the number of inputs required and link the...
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    This set up works for me with a JCI branded jace...

    This set up works for me with a JCI branded jace at 3.6.xx

    457311

    And CryptoService installed.

    457321
  15. This label works for me on JCI branded jaces....

    This label works for me on JCI branded jaces.
    456241
  16. This guide...

    This guide http://orioncontrols.com/literature/OR-PTLNK2BTL-TGD-01G.pdf may be of help. Search it for hot gas...
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    Have google search for condenser fan speed...

    Have google search for condenser fan speed controller.
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    626

    Ditto

    Ditto
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    Old thread, current problem, right answer (com

    Old thread, current problem, right answer (com < 10). Thanks.
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    412

    You can use the Martin-Hou equation of state to...

    You can use the Martin-Hou equation of state to generate refrigerant properties for use in your simulations. DuPont lists the coefficients in their literature....
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    48AK should be a VAV unit - is this correct?...

    48AK should be a VAV unit - is this correct?
    What are your SFS.M and SFS.S settings?
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    229

    Numeric schedule?

    Numeric schedule?
  23. Thread: hvacpro

    by DaveCR
    Replies
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    564

    It's available through online vendors as part...

    It's available through online vendors as part number MW-MTOOL-0
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    Point the ord to Facets. Set the Object To...

    Point the ord to Facets. Set the Object To String, Format as %units%.
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    Right click Proxy Ext, select Action, then Force...

    Right click Proxy Ext, select Action, then Force Read. I've seen older FX40s (1.xx) with this issue at other priority levels.
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