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RWD44U Controller Installation and Commissioning Guide 

Document Number 129-408 

 

October 5, 2009

 

Siemens Industry, Inc. 

Page 5 of 10

 

 

PS 3 – Digital and Auxiliary Functions 

Range/Type 

Default  

Select digital input D1 

D/N, Filter Alarm, Alarm, on/off 

Depends on #x 

 

 

 

Aux. Function = Setpoint reset 

 

 

    Setpoint reset start point, reverse acting 

 
Setpoint reset sensor range 

 
72°F (22°C) 

   Setpoint reset end point, reverse acting  

 
Setpoint reset sensor range 

 
65°F (18°C) 

    Setpoint reset shift  

 
Setpoint reset sensor range 

 
8°F (4 K) 

    Setpoint reset n start point, direct acting 

 
Setpoint reset sensor range 

 
83°F (28°C) 

    Setpoint reset end point, direct acting 

 
Setpoint reset sensor range 

 
90°F (32°C) 

    Setpoint reset shift 

 
Setpoint reset sensor range 

 
8°F (4 K) 

 

Aux. function = WIN SUM analog 

 

 

Enter changeover setpoint for winter 

Sensor range 

72°F (22°C) 

Enter changeover setpoint summer 

Sensor range 

83°F (28°C) 

Enter changeover time delay, winter 

 summer 

00.01 to 23 hours 59 minutes 

00.01 minute 

 

PS 4 – Differentials and Time Delays 

Range/Type 

Default  

Enter switching differential (SD) for output stage 1, 2, and 3 

Sensor range 

2°F (1 K) 

Enter min On time for output stage 1, 2, and 3 

0 to 4,096 s 

0 s 

Enter min Off time for output stage 1, 2, and 3 

0 to 4,096 s 

60 s 

Enter time delay TD for next stage On 

0 to 4,096 s 

30 s 

Enter changeover time delay TD, heating 

 cooling demand 

0 to 4,096 s 

120 s 

 

Setpoint Mode 

Range/Type 

Default  

Enter SP-h1  

Sensor range 

70°F (21°C) 

Enter SP-h2 

Sensor range 

68°F (20°C) 

Enter SP-h3 

Sensor range 

66°F (19°C) 

Enter SP-c1 

Sensor range 

74°F (23°C) 

Enter SP-c2 

Sensor range 

76°F (24°C) 

Enter SP-c3 

Sensor range 

77°F (25°C) 

If D1 is set for Day/Night  

 

 

Enter night SP-h1  

Sensor range 

64°F (18°C) 

Enter night SP-h2 

Sensor range 

62°F (17°C) 

Enter night SP-h3 

Sensor range 

60°F (16°C) 

Enter night SP-c1 

Sensor range 

79°F (26°C) 

Enter night SP-c2 

Sensor range 

80°F (27°C) 

Enter night SP-c3 

Sensor range 

82°F (28°C) 

For remote setpoint – Heating stage 1 is the remote setpoint and the 
reference point. A  

SP is set between the stages. 

 

H2

C1

C2

Remote
Setpoint

H3

C2

 

 

 

Enter 

SP H2 

Sensor range 

-2°F (-1 K) 

Enter 

SP H3 

Sensor range 

-4°F (-2 K) 

Enter 

SP C1 

Sensor range 

4°F (2 K) 

Enter 

SP C2 

Sensor range 

6°F (3 K) 

Enter 

SP C3 

Sensor range 

8°F (4 K) 

After completing the setpoints, press + button for the main display. 

Summary of Contents for RWD44U

Page 1: ...X1 for the main temperature sensor Universal input X2 for the following auxiliary functions On Off Standby Setpoint reset Remote setting unit Sensor averaging Alarm Winter Summer setpoint changeover Filter alarm Sensor select Digital input D1 for the following digital functions Day night changeover setpoint On Off Standby Alarm Filter alarm The RWD44U controller is intended for either DIN rail mou...

Page 2: ...mmissioning Example Two stage compressor with reversing valve on heating and two averaging sensors 35 Table 2 Input Configurations X1 X2 and D1 Applications 10 Through 39 X1 X2 D1 Options Filter Alarm Alarm Day Night Standby x0 Standby Main Standby x1 Remote setpoint Main Remote setpoint x2 Alarm Main Alarm x3 Filter alarm Main Filter alarm x4 Setpoint reset Main Setpoint reset x5 Avg X1 X2 Main M...

Page 3: ...t cool 0 to 4 096 sec TON Minimum switch on time for Q 0 to 4 096 sec TD Time Delay for next stage ON 0 to 4 096 sec TOFF Minimum switch off time for Q 0 to 4 096 sec PS 3 Auxiliary Control Loop Set up Setpoint reset shift Start point End point and Shift differential Setpoint reset shift Start point End point and Shift differential SUM Summer changeover point Time delay from Winter Summer changeov...

Page 4: ...Siemens software tool See Software Tool Optional Programming Initial Program Settings New Controller There are five levels of parameter setting PS modes PS1 through PS4 and a setpoint mode Each PS has a set of default parameters which can be changed during commissioning When powered the first time the controller will proceed to PS1 with default application 10 See below for commissioning steps PS 1...

Page 5: ...differential SD for output stage 1 2 and 3 Sensor range 2 F 1 K Enter min On time for output stage 1 2 and 3 0 to 4 096 s 0 s Enter min Off time for output stage 1 2 and 3 0 to 4 096 s 60 s Enter time delay TD for next stage On 0 to 4 096 s 30 s Enter changeover time delay TD heating cooling demand 0 to 4 096 s 120 s Setpoint Mode Range Type Default Enter SP h1 Sensor range 70 F 21 C Enter SP h2 S...

Page 6: ...entering any of the setpoint displays the setpoint on display can be adjusted by pushing the SEL λ button Increase value by pressing the button or decrease the value by pressing the button When the required value is reached press the SEL λ button to save the new value Time out For setpoint adjustment during normal operation the controller will exit the setting after 20 seconds and return to the ma...

Page 7: ...ive unless a parameter has been changed Ensure all outputs are disconnected before changing an application Software Tool Optional Commissioning A software tool for the controller application selection and parameter adjustment is available It is a user friendly Windows 95 or later based software tool The software tool has the following functions Adjusting all available parameters Uploading and down...

Page 8: ...ations 10 Through 19 C1 C2 H1 H2 X1 X2 S1 PC Cooling stage 1 Cooling stage 2 Heating stage 1 Heating stage 2 Room temperature sensor Auxiliary sensor or a digital input Switch or time clock Personal computer optional for set up only Figure 6 Applications 20 Through 39 CR1 CR2 CR3 RV X1 X2 S1 PC Compressor stage 1 Compressor stage 2 Compressor stage 3 Reversing valve relay Main temperature sensor A...

Page 9: ...e the ARG62 21 single RWD44U WARNING There must be a minimum of 0 31 inches 8 mm distance from terminations to panel enclosures to avoid electric shock Electrical Installation Notes Standard cables can be used for the controller However when mounting in an environment greatly exposed to EMI use only shielded cables The RWD44U is designed for 24 Vac operating voltage Low voltage must comply with th...

Page 10: ...duct or company names mentioned herein may be the trademarks of their respective owners 2007 Siemens Industry Inc Siemens Industry Inc Building Technologies Division 1000 Deerfield Parkway Buffalo Grove IL 60089 1 847 215 1000 Your feedback is important to us If you have comments about this document please send them to SBT_technical editor us sbt siemens com Document No 129 408 Printed in the USA ...

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