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Siemens Building Technologies Inc. HVAC Products RWD controllers 1 RWD CONTROLLERS TECHNICAL HVAC Products – Americas Region.

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Presentation on theme: "Siemens Building Technologies Inc. HVAC Products RWD controllers 1 RWD CONTROLLERS TECHNICAL HVAC Products – Americas Region."— Presentation transcript:

1 Siemens Building Technologies Inc. HVAC Products RWD controllers 1 RWD CONTROLLERS TECHNICAL HVAC Products – Americas Region

2 Siemens Building Technologies Inc. HVAC Products RWD controllers 2 RWD82U

3 Siemens Building Technologies Inc. HVAC Products RWD controllers 3 RWD82U controller E1Electrical load 2-position control N1RWD82U controller PCPersonal computer Q1/Q2Potential-free relay contacts for 3-position or 2-position control in 2 steps S1Time clock or switch SNSystem neutral SPSystem potential X1Main input (Termination G appears when X1 is an active sensor) X2Auxiliary input or remote setpoint (Termination G appears when X2 is an active sensor) Y1Actuator with 3-position control 24 Vac RWD82U Connection Diagram

4 Siemens Building Technologies Inc. HVAC Products RWD controllers 4 RWD82U Applications with corresponding selectable auxiliary function

5 Siemens Building Technologies Inc. HVAC Products RWD controllers 5 Main Sequences RWD82U

6 Siemens Building Technologies Inc. HVAC Products RWD controllers 6 RWD82U - Main Sequence 2 Heating sequences or 2 Reverse Acting sequences (Dependent) Application No.: electric heaters heating valve with heating pump

7 Siemens Building Technologies Inc. HVAC Products RWD controllers 7 RWD82U - Main Sequence 2 Heating sequences or 2 Reverse Acting sequences (Independent) Application No.: X1Q1 Temp. RWD82U On Off Q1 Q2

8 Siemens Building Technologies Inc. HVAC Products RWD controllers 8 RWD82U - Main Sequences Heating sequence or Direct or Reverse Acting Sequence (3-point) Application No.: X1Q2Q1 Temp. RWD82U On Off Q1 Q2 Setpoint Load 0% 100%

9 Siemens Building Technologies Inc. HVAC Products RWD controllers 9 RWD82U - Main Sequence Application No.: X1Q2Q1 Temp. RWD82U On Off Q1 Q2 Heating + Cooling sequences or Reverse + Direct acting sequences

10 Siemens Building Technologies Inc. HVAC Products RWD controllers 10 RWD82U - Main Sequence 2 Cooling sequences or 2 Direct Acting sequences (Independent) Application No.: X1Q1 Temp. RWD82U On Off Q1 Q2

11 Siemens Building Technologies Inc. HVAC Products RWD controllers 11 RWD82U - Main Sequence 2 Cooling sequences or 2 Direct Acting sequences (Dependent) Application No.: X1Q1 Temp. RWD82U On Off Q1 Q2

12 Siemens Building Technologies Inc. HVAC Products RWD controllers 12 RWD82U - Main Sequences Cooling sequence or Reverse or Direct Acting sequence (3-position) Application No.: X1Q2Q1 Temp. RWD82U On Off Q1 Q2 Setpoint Load 0% 100%

13 Siemens Building Technologies Inc. HVAC Products RWD controllers 13 RWD62U

14 Siemens Building Technologies Inc. HVAC Products RWD controllers 14 RWD62U controller Termination N1RWD62U controller PCPersonal computer S1Time clock or switch SNSystem neutral SPSystem potential X1Main input (Termination G appears when X1 is an active sensor) X2Auxiliary input or remote setpoint (Termination G appears when X2 is an active sensor) Y1, Y2Valve actuator 1 and 2/Damper actuator 1 and 2

15 Siemens Building Technologies Inc. HVAC Products RWD controllers 15 RWD62 Applications with corresponding selectable auxiliary function Application No. Summary (H = Heating, C = Cooling, R = Reverse Acting, D = Direct Acting) (The 1st digit = Main Control Loop, The 2nd digit = Auxiliary Control Loop) Main Loop #1x H or D sequence #2x H + H or D + D sequences #3x H + C or D + R sequences #4x C or D sequence #5x C + C or D + D sequences Auxiliary Loop #x0 No auxiliary#10#20#30#40#50 #x1 Remote Setpt#11#21#31#41#51 #x2 Absolute limiter#12#22#32#42#52 #x3 Relative limiter#13#23#33#43#53 #x4 Compensation shift#14#24#34#44#54 #x5 Cascade#15#25#35#45#55 #x6 Win/Sum digital#16#26#36-- #x7 Win/Sum analog#17#27#37-- #x8 Max. priority--#38#48#58 #x9 Main loop is using active input#19#29#39#49#59

16 Siemens Building Technologies Inc. HVAC Products RWD controllers 16 Main Sequences RWD62U

17 Siemens Building Technologies Inc. HVAC Products RWD controllers 17 RWD62 - Main Sequences Heating sequence or Direct Acting sequence Application No.: Y1 Output Voltage Setpoint Load X1Y1 Temp. RWD62U Y Output Y1 can be switched from D.A. to R.A.

18 Siemens Building Technologies Inc. HVAC Products RWD controllers 18 RWD62 - Main Sequences 2 Heating sequences or 2 Direct Acting sequences Application No.: Y1 Output Voltage Setpoint Load Y2 Setpoint X1Y1 Temp. RWD62U Y Y2 Outputs Y1 and Y2 can be switched from D.A. to R.A.

19 Siemens Building Technologies Inc. HVAC Products RWD controllers 19 RWD62 - Main Sequences Heating + Cooling sequences or Direct+ Reverse acting sequences Application No.: Y1 Output Voltage Setpoint Load Y2 Setpoint X1Y2Y1 Temp. RWD62U Y Output Y1 can be switched to R.A. and Y2, D.A.

20 Siemens Building Technologies Inc. HVAC Products RWD controllers 20 RWD62 - Main Sequences Cooling sequences or Reverse Acting sequences Application No.: X1Y1 Temp. RWD62U Y Output Y1 can be switched to D.A.

21 Siemens Building Technologies Inc. HVAC Products RWD controllers 21 RWD62 - Main Sequences Application No.: X1Y2Y1 Temp. RWD62U Y 2 Cooling sequences or 2 Direct Acting sequences Output Y1 and Y2 can be switched to D.A.

22 Siemens Building Technologies Inc. HVAC Products RWD controllers 22 RWD68U

23 Siemens Building Technologies Inc. HVAC Products RWD controllers 23 RWD68U controller E1Electrical load N1RWD68U Controller PCPersonal computer Q1Potential-free relay contacts for two-position control S1Time clock or switch SNSystem neutral SPSystem potential X1Main input (Termination G appears when X1 is an active sensor) X2Auxiliary input or remote setpoint (Termination G appears when X2 is an active sensor) Y1Valve actuator/Damper actuator

24 Siemens Building Technologies Inc. HVAC Products RWD controllers 24 RWD68U Applications with corresponding selectable auxiliary function

25 Siemens Building Technologies Inc. HVAC Products RWD controllers 25 Main Sequences RWD68U

26 Siemens Building Technologies Inc. HVAC Products RWD controllers 26 RWD68U - Main Sequence Heating sequence or Reverse Acting sequence Application No.: X1Q1 Temp. RWD68U On Off Q1

27 Siemens Building Technologies Inc. HVAC Products RWD controllers 27 RWD68U - Main Sequence 2 Heating sequences or 2 Direct Acting sequences (Dependent) Application No.: Heating coil with electric heater By-pass system with pump & 3-way valve Output Y1 can be switched to R.A. Y1 Max V Heating Load Setpoint Output Voltage Q1 OFF ON Min V X1Y1Q1 Temp. RWD68U Y Q1

28 Siemens Building Technologies Inc. HVAC Products RWD controllers 28 RWD68U - Main Sequence Application No.: Heating sequences or 2 Direct Acting sequences (Independent) Y1 Min V Load Setpoint Ouptut Voltagee OFF ON Q1 SD 22 Max V X1Y1Q1 Temp. RWD68U Y Q1 Output Y1 can se switched to R.A.

29 Siemens Building Technologies Inc. HVAC Products RWD controllers 29 RWD68U - Main Sequence Application No.: X1Y1Q1 Temp. RWD68U Y Q1 Heating + Cooling sequences or Reverse + Direct acting sequences Y1 Min V Load Setpoint Ouptut Voltagee OFF ON Q1 SD 22 Max V Output Y1 can be switched to R.A.

30 Siemens Building Technologies Inc. HVAC Products RWD controllers 30 RWD68U - Main Sequence Application No.: Heating Coil and Direct Chiller Output Y1 can be switched to D.A. X1Y1Q1 Temp. RWD68U Y Q1 Heating + Cooling sequences or Reverse + Direct acting sequences

31 Siemens Building Technologies Inc. HVAC Products RWD controllers 31 RWD68U - Main Sequence 2 Cooling sequences or 2 Direct Acting sequences (Dependent) Application No.: Direct chiller Output Y1 can be switched to D.A. X1Y1Q1 Temp. RWD68U Y Q1

32 Siemens Building Technologies Inc. HVAC Products RWD controllers 32 RWD68U - Main Sequence 2 Cooling sequences or 2 Direct Acting sequences (Independent) Application No.: 70 – 79 Output Y1 can be switched to D.A. X1Y1Q1 Temp. RWD68U Y Q1

33 Siemens Building Technologies Inc. HVAC Products RWD controllers 33 RWD68U - Main Sequence Cooling sequence or Direct Acting sequence Application No.: 80 – 89 Output Y1 can be switched to D.A. X1Q1 Temp. RWD68U On Off Q1

34 Siemens Building Technologies Inc. HVAC Products RWD controllers 34 Auxiliary Functions RWD

35 Siemens Building Technologies Inc. HVAC Products RWD controllers 35 RWD - Auxiliary Functions A remote setpoint transmitter QAA25U (1K Ni) or K Plat), connected to X2 and configured accordingly, assumes the function of the setpoint 1. Remote setpoint (#_1) X1Y2Y1 Temp. RWD62U Y X2

36 Siemens Building Technologies Inc. HVAC Products RWD controllers 36 RWD - Auxiliary Functions The limiter function with PI control enables absolute(or relative) maximum or minimum limitation of the supply air temperature (X2). When the value drops below or exceeds the limiter setpoint, the limiter function overrides the standard control function to maintain the limiter setpoint. 2. PI Limiter (#_2 & #_3) X1Y2Y1 Temp. RWD62U Y X2

37 Siemens Building Technologies Inc. HVAC Products RWD controllers 37 RWD - Auxiliary Functions The temperature setpoint X1 is controlled by the temperature as measured at sensor X2. Configuration of the RWD62U defines the influence on setpoint X1. The example shows the supply air temperature setpoint as controlled by the outside temperature. 3. Setpoint Compensation (#_4) X2Y2Y1 Temp. RWD62U Y X1

38 Siemens Building Technologies Inc. HVAC Products RWD controllers 38 RWD - Auxiliary Functions X2 - Supply air temperature sensor You can select the PI/PI room/supply air temperature cascade control. In this case, the virtual PI room temperature controller determines the setpoint within the limiter setpoints for the PI supply air temperature controller. 4. Cascade Control (#_5) X1Y2Y1 Temp. RWD62U Y X2

39 Siemens Building Technologies Inc. HVAC Products RWD controllers 39 RWD - Auxiliary Functions X2  M terminals (Digital/analog) A digital switch or anlog output between terminals X2 and M can be used to implement summer/winter changeover. 5. Summer / Winter operation (#_6 & #_7) X1Y2Y1 Temp. RWD62U Y D1 T

40 Siemens Building Technologies Inc. HVAC Products RWD controllers 40 RWD - Auxiliary Functions Digital changeover When the contact is closed, summer operation is selected. Output Y1 is set to Reverse Action (cooling). When the contact is open, winter operation is selected. Output Y1 is set to Direct Action (heating). Analog changeover When the X2 reach over the setpoint, summer operation is selected. Output Y1 is set to Reverse Action (cooling). When the X2 is below the setpoint, winter operation is selected. Output Y1 is set to Direct Action (heating). 5. Summer / Winter operation (#_6 & #_7) (Cont.)

41 Siemens Building Technologies Inc. HVAC Products RWD controllers 41 RWD - Auxiliary Functions If the input value (0…10V) of the input X2 is greater than the calculated output of the cooling sequence, the output will use the X2 input value as output value. This is active even when the controller is working with the heating sequence. 6. Maximum Priority (#_8) X1Y2Y1 Temp. RWD62U Y X2

42 Siemens Building Technologies Inc. HVAC Products RWD controllers 42 RWD - Auxiliary Functions D1  M potential-free contact (External time clock) A timer contact between terminals D1 and M can be used to implement setpoint changeover for day/night operation. When the contact is open, the setpoint for day operation is selected. When the contact is closed, the setpoint for night operation is selected. 7. Day / Night Setpoint (For all RWD’s, independent of App. No.) X1Y2Y1 Temp. RWD62U Y D1

43 Siemens Building Technologies Inc. HVAC Products RWD controllers 43 RWD - Software tool Simple windows based operation Numbered standard applications Customize applications Print-out of final settings Hide selected parameters from LCD Create your own application library based on system type or customer


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