1. Beckhoff Building Automation 20.09.2015 1 New Automation Technology HVAC-Library Exercise Air Conditioning System

2. Beckhoff Building Automation 20.09.2015 2  Air Conditioning System with 1 Speed Fans, Air Heating, Air Mixing and Air Cooling.  The room temperature is controlled via a cascade from a room PID and an sequence from supply Air PID-controllers.  The Supply Air temperature can be limited from the Master Controller in the Cascade.  If freeze protection is detected the fans will be stopped, the heating valve will be opened and the heat pump will run.  The plant is equipped with a summer night cooling, cool down protection and over heating protection program.  The Pump is running if the heater valve is opened more than 3%.  The pump and the heater valve have an anti blocking program to prevent sticking after long downtimes.  The running times from the plant can adjusted with a weekly scheduler. The weekly scheduling is combined with an calendar for Holiday an special days. HVAC-Library Exercise Air Conditioning System

3. Beckhoff Building Automation 20.09.2015 3 Supply Air Y cooling Mixing heating T TT 2 T room PID Mixing PID T 1 Kühlen Sw 3 2 1 ot<ret_Tot>ret_T T 3 Heizen PID HVAC-Library Exercise Air Conditioning System

4. Beckhoff Building Automation 20.09.2015 4 Programming Step 1 (creating plant folder) Creating a plant folder before importing the macros. HVAC-Library Exercise Air Conditioning System

5. Beckhoff Building Automation 20.09.2015 5 The next step is to import the groups from the folder :\EXP_Files\Groups Procedure: 1. Open File with notepad 2. checking plant naming and if necessary modify with find and replace all. 3. Saving File 4. Importing macro Programming Step 2 (importing macros) HVAC-Library Exercise Air Conditioning System AC02 AC01

6. Beckhoff Building Automation 20.09.2015 6 The following groups ore sub programs must be imported:  Main program for calling all sub programs from the plant. MAINPROGAM_AIR_CONDITIONING.EXP  Temperature Sensors AC-Plant: TEMPERATURE_SONSORS_AC_PLANT.EXP  Supply and Return Air Fan: FANS_1SPEED_Ventilation_Air_Conditioning.EXP  Setpoint calculation with master PID and summer compensation: Setpoint calculation for Room and Supply Temperature cascade.EXP  Cooler with PID and control valve: COOLER.EXP.EXP  Air Mixing with PID and damper: AIR MIXING.EXP  AC-Plant start program: X_StartAC  Return air and supply air filter: FilterGuard_X_Filter.EXP  Selection of all errors which must turn of the AC-Plant ERRORCOLLECTION_AC.EXP Programming Step 2 (importing macros) HVAC-Library Exercise Air Conditioning System

7. Beckhoff Building Automation 20.09.2015 7  Pre- Heater with supply air PID, return water temperature, return water PID, heat pump and freeze protection program : PRE HEATER.EXP  Cool Down Protection Program Cooling_Down_Protection__X_CoolDownProtection.EXP  Time Scheduling Program with Manual Ctrl switch TIMESCHEDULING_1STAGE_CMDCTRL_1STAGE__X_TIMESCHEDUL2ST_CMDCTRL2ST.EXP  Summer Night Cooling Program SummerNightCooling__X_NightCooling.EXP  Over Heating Protection Program OverheatingProtection__X_OverHeatProtec.EXP Programming Step 2 (importing macros) HVAC-Library Exercise Air Conditioning System

8. Beckhoff Building Automation 20.09.2015 8 After importing the macros arises the following view. Programming Step 2 (importing macros) HVAC-Library Exercise Air Conditioning System

9. Beckhoff Building Automation 20.09.2015 9 In the main program AC01 runs all sup programs from the plant: Programming Step 3 (call from all sub programs) HVAC-Library Exercise Air Conditioning System

10. Beckhoff Building Automation 20.09.2015 10 The main program AC01 is to check if all program calls and links are one. Programming Step 4 (call from all sub programs) HVAC-Library Exercise Air Conditioning System

11. Beckhoff Building Automation 20.09.2015 11 Programming Step 4 (call from all sub programs) HVAC-Library Exercise Air Conditioning System The main program AC01 is to check if all program calls and links are done.

12. Beckhoff Building Automation 20.09.2015 12  MAIN must be completed with call from AC01 Programming Step 5 (call from AC01 in MAIN) HVAC-Library Exercise Air Conditioning System

13. Beckhoff Building Automation 20.09.2015 13  compile, download, connection with the terminals Programming Step 6 (compiling) HVAC-Library Exercise Air Conditioning System

14. Beckhoff Building Automation 20.09.2015 14 Additional Exercise: Ad a second Air Conditioning plant: Procedure: 1.Export your AC01 to the Export-Folder plants 2.Rename AC01 to AC02, save and import 3.Include an Air/Air Heat exchanger into the AC02. 4.Adjust the Sequence controller (current sequence, number of sequences) 5.Ad the call from the recovery system in AC02 6.Ad the call AC02 in MAIN After this procedure programming a second plant with a recovery system is done! Exercise 2 (Programming an addition AC) HVAC-Library Exercises Air Conditioning System

15. Beckhoff Building Automation 20.09.2015 15 Additional Exercise: Ad a third Air Conditioning plant: Procedure: 1.Export your AC02 to the Export-Folder plants 2.Rename AC02 to AC03, save and import 3.Delete the folder Energy Recovery 4.Include an recuperation heat exchanger into the AC03. 5.Adjust the Sequence controller (current sequence, number of sequences) 6.Ad the call AC03 in MAIN After this procedure programming a third plant with a recuperation heat exchanger system is done! Exercise 2 (Programming an addition AC) HVAC-Library Exercises Air Conditioning System