DX 9100 Occupied Unoccupied
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  1. #1
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811

    DX 9100 Occupied Unoccupied

    I realize it is probably burried somewhere in a DX-9100 Point mapping table but

    here goes.

    1)_The DX-9100 is properly controlling two chillers using two P.I.D. modules

    2)_The N-31 properly commands the occupied /unoccupied modes for all the remaining

    UNT controllers .

    3)_I want to have an occupied /unoccupied cooling setpoint mapped from the DX-9100 to the N-31 just like we have it with the UNT controllers and their H.V.A.C. equipment


    If the space reaches the Unoccupied temperature I want the chillers to operate

    Which points on the DX-9100 P.I.D. module do I map to the N-31 ?

    Even if it means using a temperature bias or a second set of P.I.D. modules

    What point contains the N-31 occupied/unoccupied command?
    And how do I tie that command into the DX-9100 ?


    Thank you

  2. #2
    dude

    Did you get that lead tech job at the JCI branch yet?

  3. #3
    Dude, it totally depends on how the program is written. What's the program module # of the PID? PLC Logic? Local Setpoints? ACO's? Comparators?
    More info needed.
    PAGE 43

    http://cgproducts.johnsoncontrols.co...+point+mapping

  4. #4
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811
    I will post this for archival sake

    I am using PID 1
    I added the following points to the N-31

    DCO2 - Digital Constant
    PM1K6 - Change of setpoint at Off mode
    PM1 l 5 - Logic connection for off mode
    PM1OU 2 - Working Setpoint WSP

    PM 1 K6 = "Unoccupied temp Bias" = 15 Degrees

    DCO2 = "off Mode On /Off " I inverted the Connection

    I added "off Mode On /Off" to the daily time schedule

    The Local setpoint PM1K1 is 70 degrees
    When the schedule commands DCO2 Off , it Inverts to On and is connected

    to PM1 l 5

    The working setpoint rises 15 Degrees to 85 Degrees

    The only minor problem is that the operator can not directly enter

    an UnOccupied Setpoint They have to use the Temp Bias

    But it works

    Thank you for the good Johnson Link

    If the pay was better I would accept the Tech job at JCI

  5. #5
    Join Date
    Jun 2007
    Location
    Feasterville, Pa.
    Posts
    43
    How much do they pay?

  6. #6
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811
    Not enough.They seem like they were having problems recruiting peole

  7. #7
    Join Date
    Dec 2006
    Location
    Hartford, Connecticut
    Posts
    442
    Quote Originally Posted by cleancondenser View Post
    Not enough.They seem like they were having problems recruiting peole
    There recruiters are doing great. Just look at IndyBlue. He may be stupid but he’s cheap……..

  8. #8
    You could also write an ACO to the program and add a or statement to any PLC that makes the DCO (occupied) to a "set" and only let the next unoccupied "reset" the DCO.
    Having the program in the DX will allow the controller to operate stand alone.
    To me Stand alone is better for most applications.
    (Duh)

  9. #9
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811
    That is a good idea
    But ,I would still have to use an interlocking object in The N-31

    to open and close the DCO

    1) The space temperature sensors are connected to a UNT controller on the third floor those points are globally shared by other UNTS

    2) They want to control the Unoccupied Occupied feature thru the OWS
    _ connected to the N-31,they do not want any standalone controllers

    I am not quite sure how to address points using the hex address and writing
    or reading to an individual byte in a function module
    (
    Example
    the eight channel comparator module uses the three last bits of a byte
    (X1 ,X2 ,X3 ) to disable the channel and or to set the comparator type

    In the old days I would use to use peek and poke commands to set the individual
    bits of a byte

  10. #10
    Join Date
    Aug 2007
    Posts
    4

    DX and more

    Not to beat a dead horse, but if the ACO’s are available use them with a selector toggled by a DCO as OCC, UNOCC, write to it from the OCC-S of the UNT. Of course there’s a million ways to skin a cat.

    As far as JCI if you talk to the right person, they’ll promise you anything you want to hear…

    On the service side I’d suspect the axe will soon swing. The Jork merger has just slowed them down a bit.

  11. #11
    Join Date
    Jan 2007
    Posts
    82
    Quote Originally Posted by Jest_r View Post
    Not to beat a dead horse, but if the ACO’s are available use them with a selector toggled by a DCO as OCC, UNOCC, write to it from the OCC-S of the UNT. Of course there’s a million ways to skin a cat.

    As far as JCI if you talk to the right person, they’ll promise you anything you want to hear…

    On the service side I’d suspect the axe will soon swing. The Jork merger has just slowed them down a bit.
    You have no clue what you are talking about. Service is stonger than ever

    now that all the dead weight is gone. The below statement is 100%

    accurate. You incomptant hacks piss me off.

    At Johnson Controls, we are passionate about delivering the ultimate service experience.
    We call our this experience Service+. It’s our commitment to delivering more expertise, resources, professionalism and results than any other service provider.

    We know what you expect from a service provider:


    Expertise
    Someone who will fix problems others can’t. Each of our service branches is staffed with the most skilled technicians in the business backed by a global knowledge infrastructure.


    Resources
    Someone who can handle the job. Any job. Whether you need one person or a team, a single truck or a fleet, you’ll get it from Johnson Controls Service


    Professionalism
    Someone you can count on to always give their best. We’ll keep you informed, give you options and communicate alternatives. We understand what it means to respect your facility, and follow your processes. We don’t just do the work, but offer you solutions.


    Results
    Someone that can help you and your facility operate at it’s full potential. Predictable costs, quick reponse, reduced costs and maximum equipment life.

  12. #12
    Join Date
    Dec 2006
    Location
    Hartford, Connecticut
    Posts
    442
    That’s right out of your sales 101 cook book. Read on brother you’re the only one on this site that’s dumb enough to believe any that horse****.

    It reminds me of the commercial when the guy is going buy a Sealy mattress and dreams that his boss gave him a raise, a condo in Barbados and gave him his big executive office, THEN HE WOKE UP!!!!!! When the salesmen interrupted his dream. Funny thing is his name was Johnson.

    Dream on buddy, In Connecticut JCI has the most dissatisfied customers of ANY control company, branch office of the big 3 or local independent. You should attend a BOMA, IFMA or ASHRAE meeting and maybe you will be enlightened on just how HORRIBLE your customer service is.

    How is it that you have the best service techs when in this area the average life expectancy is 2 years or less before they leave.

    I take it you sleep on Sealy too!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  13. #13
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811
    Very interesting , every way to skin a cat is good to know

    I am using a DX-0100
    How would I write to it from the OCC-S of the UNT ?

    Please let me know


    JCI is on no verge of going down

    It goes by the branch, down in our Jersey / PA area The York guys are very busy
    I see the poor guys in the supply house and they are busy

    Do you have any idea how many hospitals , schools and buidings use York
    centrifugals and equipment.

    In this part of the country they are very common place

    Good move on JCI
    the only other company that comes close is Trane,
    and JCI attempted to
    purchase them also

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