[EnergyPlus_Support] Re: Need help in understanding the error

["Aditya" <adityaravi87@xxxxxxxxx>]

Hello Jean,

Like you suggested I am looking into the EMS documentation. Since I have never worked on a software its taking me some time to understand. 

The example EMS schedule which you have sent me, if you can explain it in detail on what each line means it will be of great help. I need to understand as to how you chose a sensor and actuator. And is there any specific naming technique etc.

You have mentioned some numbers here 457 etc, now where did those come from and how do I change them if I need to. 

Kindly look into my intial request and IDF and tell me how I can write my EMS to get the desired output.

Sincerely,

Aditya
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Jean marais" <jeannieboef@...> wrote:
>
> This was the EMS I used to change the schedule availability for my equipment. I've not had time to look at your idf yet.
> 
> !This .idf is needed per each zone where cooling using negative process
> !loads is desired with setpoint control which defined the zone cooling setpoint. 
> !Our zone in this example was called "457".
> 
> !Exchange "457" with what ever zone number (name) this must apply to. 
> !Exchange "Zone 457 Cooling SP Sch" with what ever equipment setpoint schedule name is relevant.
> !Exchange "1100" with what ever equipment schedule name is relevant.
> 
> !NB this allows for simultaneous heating and cooling.
> 
> 
> !***Sensor Name, OutputVariable to echo, Name of new output Variable***
> !Zone Air Temperature Value
> EnergyManagementSystem:Sensor,
> T_457,                         ! Sensor Name...reporting temperature
> 457,                          ! Output:Variable or Output:Meter Index Key Name
> Zone Mean Air Temperature;    ! Output:Variable or Output:Meter Name
> 
> !Setpoint  Value
> EnergyManagementSystem:Sensor,
> S_457,                         ! Sensor Name...reporting schedule properties
> Zone 457 Cooling SP Sch,      ! Output:Variable or Output:Meter Index Key Name
> Schedule Value;               ! Output:Variable or Output:Meter Name
> 
> !Equipment Schedule Value
> EnergyManagementSystem:Sensor,
> E_457,                         ! Sensor Name...reporting schedule properties
> 1100,                          ! Output:Variable or Output:Meter Index Key Name
> Schedule Value;               ! Output:Variable or Output:Meter Name  
> 
> EnergyManagementSystem:Actuator,
> Cooling_Schudule_Value ,      !- Name
> 1100 ,                         !- Actuated Component Unique Name...in this case "1100" the equipment cooling schedule applied to this zone
> Schedule:Compact,              !- Actuated Component Type
> Schedule Value ;               !- Actuated Component Control Type
> 
> 
> !***Program Calling Proceedure***
> EnergyManagementSystem:ProgramCallingManager,
> Zone Mean Air Temperature,                                               ! Name
> AfterPredictorBeforeHVACManagers,                                    ! EnergyPlus Model Calling Point
> SetNegativeProcessLoadOnOff;                                             ! Program 1 Name
> 
> !***Main Program***
> !******************
> EnergyManagementSystem:Program,
> SetNegativeProcessLoadOnOff,                                            ! Program 1 Name  
> SET CurrentThermostatCoolingSP = S_457,                                                     
> SET CurrentZoneAirTemp = T_457,
> SET EquipmentScheduleValue = E_457,
> 
> IF CurrentZoneAirTemp < CurrentThermostatCoolingSP && EquipmentScheduleValue > 0,                             
> SET Cooling_Schudule_Value = 0,
> ELSEIF CurrentZoneAirTemp < CurrentThermostatCoolingSP && EquipmentScheduleValue == 0,
> SET Cooling_Schudule_Value = 0,
> ELSEIF CurrentZoneAirTemp > CurrentThermostatCoolingSP && EquipmentScheduleValue > 0,
> SET Cooling_Schudule_Value = 1, 
> ELSEIF CurrentZoneAirTemp > CurrentThermostatCoolingSP && EquipmentScheduleValue == 0, 
> SET Cooling_Schudule_Value = 1,                                         
> ENDIF;
> 
> Output:EnergyManagementSystem,
> Verbose,
> Verbose,
> Verbose;
> 
> !***End Main Program***
> !**********************
>




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