Re: [EnergyPlus_Support] Inconsistency with idf version update from 8.2 to 8.3 version

["Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

Marko,

It is possible that the conversion to 8.3 included some changes that you are not aware of, made by the conversion program.  It may be worth comparing the IDFs side-by-side. (winmerge.org does this nicely if you don't have a similar program already.)

If that does not reveal a problem, I recommend asking the E+ Help Desk.

On Tue, Sep 1, 2015 at 5:53 AM, marko.ignjatovic1980@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Dear colleagues,

I would like to know if any of you ran into the following:

My model worked fine in version 8.2.0 and when  updated to version 8.3.0 it generated many severe errors all of them associated with Cooling Coil Control Logic (

Controller:WaterCoil,

    AHU CC Control,          !- Name

    Temperature,             !- Control Variable

    Reverse,                 !- Action

    Flow,                    !- Actuator Variable

    AHU CC Outlet,           !- Sensor Node Name

    AHU CC CW Inlet Node,    !- Actuator Node Name

** Severe  ** FindRootSimpleController: Controller error for controller = "AHU CC CONTROL"

   **   ~~~   **  Environment=PMVCHECK, at Simulation time=07/14 06:00 - 06:10

   **   ~~~   **   Controller function is inconsistent with user specified controller action = "" action

   **   ~~~   **   Actuator will be set to maximum action

   **   ~~~   ** Controller control type=Temperature

   **   ~~~   ** Controller temperature setpoint = 12.80 [C]

   **   ~~~   ** Controller sensed temperature = 26.41 [C]

   **   ~~~   ** Controller actuator mass flow rate set to 0.92 [kg/s]

   **   ~~~   ** Controller actuator temperature = 33.24 [C]

)

I put output variables on the actuator node name and cooling supply output node and got strange results in the form that chilled water temperature increases (up to 35oC), although SetPointManagers are set for these temperatures to be in range 6-10oC.

Any help is more than welcome.

P.S. With all these inputs, the version 8.2.0 was working fine and the setpointManagers were followed.  

--

James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx

Website l  LinkedIn

The body must be given a little less than it needs. Otherwise it will turn traitor.

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Posted by: Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx>

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