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RWF50.2 and RWF50.3 Compact universal controllers User Manual

1. Relay Burner release Relay K1 P 1N is i NO contact 1N 7866a01 0911 NO contact Only RWF50 2 3 position output common pole Relay K3 Controlling element CLOSE Relay K2 Controlling element OPEN NO contact Only RWF50 3 Analog output A A DC 0 4 20 mA DC 0 10 V A O 7866a03 0911 19 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 4 Electrical connections 25 07 2014 Analog input nP1 Connection diagram 11 Resistance thermometer in 3 wire circuit 12 13 7866a04 0911 11 EE tts Resistance thermometer in 2 wire circuit 13 7866a05 0911 12 Current input DC 0 20 mA 4 20 mA 13 Tao 13 11 Voltage input DC 0 5 V 1 5 V 0 10 V 13 con 13 Binary inputs bi nF Fo i Common ground DG DG 78662080911 O DG Power supply Connection diagram L1 Live conductor Binary input D1 Power supply AC 110 240 V 10 15 48 63 Hz N Neutral conductor NO 7866a09 0911 G O Power supply measuring transducer DC 24 V 10 short circuit proof max 25 mA 7866a10 0412 20 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 4 Electrical connections 25 07 2014 Thermostat function Heating controller Cooling controller 5 Operating modes 5 1 Low fire operation
2. Cooling controller MT N aa 2 3 Figure 11 Control sequence of 2 stage burner analog output If the controller is set to cooling mode the respective values of HYS4 HYS5 and HYS6 apply Starting from a high actual value the controller now controls the connected cooling equipment in low fire operation In high fire operation the second stage and thus the cooling output are controlled via relays K2 and K3 or the analog output The response threshold q calculates automatically now in the reverse sense the point from which the cooling output is to be increased 25 64 Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 CC1U7866en 5 Operating modes 25 07 2014 5 3 Burner shutdown In the event of a sensor failure at the analog input nP1 the controller cannot monitor the actual value Burner shutdown will automatically be triggered to guard against overheating Functions Burner off 3 position output for closing the controlling element Self setting function is ended Manual control is ended 26 64 Building Technologies Division User Manual RWF950 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 5 4 Predefined setpoint The setpoint is predefined within the selected setpoint limits via the buttons or the ACS411 software Using an external contact the setpoint can also be shifted or changed over MA A Setpoint
3. Measured value exceeded limit The measured value is too great lies outside the measuring range or the sensor is faulty Measured value dropped below Check to see if sensor and connecting line are damaged or have a short circuit idis limit E O a The measured value is too small Check to see if the correct sensor is RWF50 X lies outside the measuring range selected or connected 7866207 0112 or the sensor has a short circuit gt 11 2 Others Display Cause Remedy On the upper display the decimal place to the right is lit SIEMENS e f 008 RWF50 2 USB connection 7866z08 0911 Remove USB connection 54 64 Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 11 What to do if CC1U7866en 25 07 2014 12 Technical data 12 1 Inputs 12 1 1 Resistance thermometers 328 1562 F Type Measuring Measuring Impact of range accuracy ambient temperature Pt100 DIN EN 60751 200 850 C lt 0 1 50 ppm K Pt1000 DIN EN 60751 200 850 C lt 0 1 50 ppm K 328 1562 F LG Ni1000 50 160 C lt 0 1 50 ppm K 58 320 F 0 135 Q lt 0 25 50 ppm K a Accuracies relate to the maximum measuring range Line resistance Max 30 Q per line with 3 wire circuit Line balancing Not required with 3 wire circuits With 2
4. se 11 Installation dt 53 General notes oooooconncccnnoccnonccconcnononccnancnnnnannnno 8 L nguages us and mete Adee 52 Mounting i i aa anda 11 License and liability regulations 52 Notification symbols 10 Others eset e e 53 Presentation oo eee eee 10 PC software ACS411 51 Qualified personnel 9 Place of installation 52 Safety notes 9 Prerequisites for hardware 52 Typographical conventions 9 Procurement of PC software ACS411 52 Use in heating plants ss 11 Safety MOteS ooooooonocoonccconoconnononocncnonnnnonnnnonannnnors 51 Warning symbols eseee 9 Setting the correct system parameters 51 K C Key ac uet Eat enters 59 Configuration O Analog input I PL 42 Operating modes seeene 21 Analog OUtPUt cococcccnnnocccononccnnononcncnnnnncononnnccnnnnnnno 45 2 stage burner 3 position output 24 Binary functions bi rF ssessesssss 46 2 stage burner analog output 25 Binary output 45 Burner shutdown usssusses 26 Control outputs QHP 45 Cold start of plant 2 00 ees 29 Controller Qtr o
5. cooconoccccnnnccccnnncccoconnnccnnonnnnconnnnnnnnnnnnnnonnnnnnnnnnnnnnnnnns 28 5 6 Cold startof plantas tada 29 5 7 Thermal shock protection TSS rrrrrrrrrrnnrrnnrrnnrnnrrnrnnnnnnnrnnrnnnrnnnnnenrnnnnnn 31 6 Operation EE eta 32 5 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector Contents 25 07 2014 6 1 Meaning of display and buttons ccceccceceeeeeeeceeeeeeeeeeeeseeeeeeseeeeeeeneeeees 32 6 2 Basic display iria e eee Te LE Due denen rea eee d ee kind 33 6 3 User level voii cnr e ee C Lee ee ERSTER Ee ECCE 34 6 4 Manual control modulating burner ooocccccnnncnnncnncnononnnonnnnnnnnnnnnnnnnononenenenenos 35 6 5 Manual control 2 stage DUrMeT oocccccccccnccccncconononnnnnononononnnnnnnnnnnononenonenenonos 36 6 6 Starting the self setting fUNCHION oooooccccnnnccccnnnocccononccoconnnccononnncnnnnnnrncnnnnnnno 37 6 7 Display of software version c cccceseeceeeeeeceeeeeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeneeeees 38 7 Parameterization PATA c ccccceeeesceceeeeeeeeeeeeceeeeeeaeeeeeeeeeeeseeeeeeseaeeeeesneeeess 39 8 Configuration COP lia 41 8 1 Analog input I nP1 edere eite tede ad ii 42 8 2 Controller Ghee avstander EK 43 8 3 Thermal shock protection TSS rAFC mrnnnnnnrnnnrnnrrnnrnnnrnnnnnnrrnnnnnnrrnnnnnnrnnnnnn 44 8 4 Control outputs QEP und acc bte eran ena 45 8 5 Binary input A 46 8 6 Display dt SP RR enm
6. CC1U7866en Infrastructure amp Cities Sector 3 Installation 25 07 2014 3 3 Side by side mounting If several controllers are mounted side by side or above one another in a control panel the horizontal distance between panel cutouts must be a minimum of 11 mm and the vertical distance a minimum of 50 mm 3 4 Mounting the controller in a panel cutout Remove the frame Fitthe seal supplied with the controller 7866202 0714 Figure 3 Mounting in a panel cutout Insert the controller from the front into the panel cutout 1 and make certain the seal is correctly fitted Fitthe frame from the rear 2 and let it engage in the grooves 15 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 3 Installation 25 07 2014 3 5 Removing the controller from the panel cutout Risus pe 3 6 Cleaning the front The front of the controller can be cleaned with normal washing rinsing agents or detergents Eo o eo al 16 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 3 Installation 25 07 2014 4 Electrical connections 4 1 Installation notes Safety regulations The choice of cable installation and electrical connections of the controller must conform to VDE 0100 Regulations for the installation of power circuits with nominal voltages below AC 1000 V or the relevant local regulations
7. 47 9 Self setting function ocn EBD dee ee detect nito de 48 9 1 Self setting function in high fire OperatiOM oooonoccccnnnncccinnccccconccccnconnccnnnnnnnno 48 9 2 Checking the controller parameters ooocoooocccccnococcccnnoooccconnnccnnonnnncnnnnnnncnnnnnnno 50 10 PC Software ACS411 acia 51 10 1 Safety notes s innu E IRE e ERES E ES 51 10 2 Setting the correct system parameters oococconnoccconocococccononcononnnncnnnnnnnnnnnnnnno 51 10 3 Changing the parameters cccccccccceeeeeceeeeeeceeeeeeeeeeeeeeeeeeescneeeeeseneeeeeseaees 51 10 4 Place of installation cccccccccceeeecceceeeeceeeeeeaeeeeeceaeeeeseaaeeeeeeeeeesseaeeesesseeeess 52 10 5 License and liability regulations ooonnooocccnnnnnncccnnncconcccnnncnnnnnnnrnccnnnnnnnannnno 52 10 6 Procurement of PC software ACS411 ccccccceeeeeeeeeeeeeeeeeeseeeeeeseeeeesneeeees 52 10 7 Languages ete akten 52 10 8 Operating systems Operating ccooocccconnncccconooccccncnnncncnnnnnncnnonnnnnnnnnnnnnnnnnnnno 52 10 9 Prerequisites for hardware sse 52 10 10 Installation ice tic ct o Lie e eo te e C LET etu dete 53 10 11 Others aa sone RESELLER ES 53 10 11 1 Use of USB port Use of nennen 53 10 11 2 Powering the controller via the USB port Powering the controller via the 010 M 53 11 What todo Mus a dad ao EEG 54 11 1 Aarm mess ges cla Eco n EE og e Decet eee
8. If a button has multiple assignments the text shown is always the text corresponding to the function currently used Two buttons shown in combination with a plus sign means that they must be pressed simultaneously Arrows between words serve for finding parameters at the configuration level more easily or for navigating in the ACS411 setup program Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 1 Introduction CC1U7866en 25 07 2014 1 3 Description Use in heating plants The RWF50 is used primarily for the control of temperature or pressure in oil or gas fired heating plants Depending on the model it is employed as a compact 3 position controller without feedback of angular positioning or as a modulating controller with an analog output An external switch is provided to convert it to a 2 position controller for controlling 2 stage burners The built in thermostat function switches the burner on and off Cooling controller The controller s operating mode can be changed from heating to cooling or vice versa RWF50 The controllers feature two 4 digit 7 segment displays for the actual value red and the setpoint green The RWF50 2 has a 3 position output consisting of 2 relays to open or close a controlling element The RWF50 3 has an analog output Control In modulating mode the RWF50 operates as a PID controller In 2 stage mode the RWF50 provides control based on
9. Low fire operation means that only small amounts of heat are drawn from the boiler Using relay K1 Burner release the 2 position controller ensures control to the setpoint by switching the burner on and off like a thermostat This mode of control is known as the thermostat function An adjustable switching differential ensures that the burner s switching frequency can be selected aimed at reducing wear Modulating and 2 stage operation Actual value lies between switch on threshold HYS1 and switch off threshold HYS3 A v EEE 7866d03e 1011 Figure 6 Control sequence of heating controller If the controller is set to cooling mode temperature limits HYS4 and HYS6 apply In that case relay K1 Burner release is used for controlling the cooling equipment Modulating and 2 stage operation Actual value lies between switch on threshold HYSA and switch off threshold HYS6 A v E gg Qu 7866d04e 1011 Figure 7 Control sequence of cooling controller 21 64 Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 CC1U7866en 5 Operating modes 25 07 2014 5 2 High fire operation High fire operation means that large amounts of heat are drawn from the boiler so that the burner runs continuously If the heating load during low fire operation rises to a level where the actual value begins to fall below switch on threshold HYS1 the controller will not immediately switch to a highe
10. Max 16 VA EEPROM Electrical connection At the rear via screw terminals Cross sectional area Stranded wire with 0 25 1 5 mm fine wired Ferrules to DIN 46228 Pin type cable socket to DIN 46231 Crimp type cable socket in fork form for M3 thread dimensions to DIN 46237 With UL applications Use of the cable lug or ferrules to UL486A B UL listed or recognized Tightening torque 0 5 Nm Electromagnetic compatibility DIN EN 61326 1 Emitted interference Class B Immunity Meeting industrial requirements 12 6 Housing Type of housing Made of Makrolon for control panel mounting to DIN IEC 61554 use in indoor Color Light grey RAL7035 Mounting depth 92 mm Mounting position Optional Degree of protection Weight RWF50 2 RWF50 3 To DIN EN 60529 Front side IP66 Rear IP20 Fully equipped Approx 170 y Approx 168 g 57 64 Building Technologies Division Infrastructure 8 Cities Sector User Manual RWF50 12 Technical data CC1U7866en 25 07 2014 12 7 Environmental conditions Storage DIN IEC 60721 3 1 Climatic conditions Class 1K3 Mechanical conditions Class 1M2 Temperature range 40 70 C Humidity lt 95 r h Transport DIN IEC 60721 3 2 Climatic conditions Class 2K2 Mechanical conditions Class 2M2 Temperature range 40 70 C Humidity lt 95 r h Operation DIN IEC 6072
11. The electrical connections must be made by qualified personnel If contact with live parts is possible while working on the unit the controller must be disconnected from power supply all polar disconnection Connection of external components Screw terminals A Caution All screw terminals at the rear of the unit must always be properly tightened This applies to unused terminals as well Fusing A Suppression of The electromagnetic compatibility and interference suppression levels conform to the interference standards and regulations listed under Technical data gt Beee a 1 QJ L Input output and supply cables should be routed separately not parallel to one another All input and output lines without connection to the power supply network must be shielded and twisted They must not be run close to live components or live cables On the controller side Incorrect use The controller is not suited for installation in areas with explosion hazard Incorrect settings on the controller setpoint data of parameter and configuration levels can affect proper functioning of the process or lead to damage Safety devices independent of the controller such as overpressure relief valves or temperature limiters monitors should therefore always be provided and only be capable of adjustment by qualified personnel Please observe the relevant safety regulations Since self setting cannot be expected to handle all possible
12. V 18 DC 0 5 V 19 DC 1 5 V Correction of 1999 Using the measured value correction offset a measured value can be measured value 0 corrected to a certain degree either up or down CFF1 9999 Offset Example Measured Offset Displayed values value 294 7 0 3 295 0 295 3 0 3 295 0 Start of display 1999 In the case of a measuring transducer with standard signal the physical SAL 0 signal is assigned a display value here Scale low level 9999 Example 0 20 mA 0 1500 C End of display 1999 The range of the physical signal can be crossed by 20 either up or down SHL 100 without getting a signal informing about the crossing Scale high level 9999 Filter time constant 0 0 Is used to adapt the digital 2nd order input filter time in s O s filter OFF dF1 0 6 Digital filter 100 0 If the input signal changes abruptly about 26 of the change are captured after a time corresponding to the filter time constant dF 2 x dF approx 59 5 x dF approx 96 When the filter time constant is great Great attenuation of interference signals Slow response of actual value display to changes of the actual value Low limit frequency low pass filter Temperature unit 1 Degrees Celsius Unit 2 Degrees Fahrenheit Unit of temperatures 42 64 Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 8 Configuration ConF CC1U7866en 25 07 2014 8 2 Controller Gtr Here
13. add 12 Figure 2 Dimensions of RWEF50 cccceceececeeeeeceeeeeceeeeeeaeeeeseaeeeeeceeeeeeeeeeeeeeeeeees 14 Figure 3 Mounting in a panel cutout ooooooococccccccccccccnnooonnnnnnncnnnnnononcnnnnnnnnnnnnnnnnnnnnnnnnnnnns 15 Figure 4 Test voltages oie eee eie bile ke karate 18 Figure 5 Assignment of terminals cccccccceeeecceeeeeeeeeeeeeeceeeeeeeeeeeeeeeeeeseeeeeeeneeees 19 Figure 6 Control sequence of heating controller ssssssssseee 21 Figure 7 Control sequence of cooling controller 21 Figure 8 Control sequence of modulating burner 3 position output 22 Figure 9 Control sequence of modulating burner analog output sssss 23 Figure 10 Control sequence of 2 stage burner 3 position output sssss 24 Figure 11 Control sequence of 2 stage burner analog output uuusss 25 Figure 12 Setpoint changeover or setpoint shift 27 Figure 13 Control sequence response threshold q ccesecceeeeeeeeeeeeeeeeeeeseeeeees 28 Figure 14 Control sequence Cold start of plant sss 29 Figure 15 Thermal shock protection TSS cceccecceeeeeeeeeeeeeeeeeeeeneeeeeeeceeeeeeeneees 31 Figure 16 Meaning of display and buttons ccceeecceeeeeeceeeeeeeeeeeeeeeeeeeeeeeteeneeees 32 Figure 17 Display start reete etri tee re ete ER 33 Figure 18 Basic disp
14. and their values on the upper actual value display red SIEMENS Parameter Display Value range Factory Remarks setting Proportional band Pbl 1 9999 digit 10 Influences the controller s P action i st as Influences the controller s D action Dsnvauve time d NP sg With dt 0 the controller has no D action om Influences the controller s l action Integral action time rt 0 9999 s 350 With rt 0 the controller has no l action For 3 position output Y d 100 Dead band neutral is zone db 0 0 999 9 digit 1 Ww X 100 7866d13 0911 Controlling element it 10 3000 s 15 Running time of the positioning valve for use running time with modulating controllers Switch on threshold gt Heating controller HSL PDT 3 Switch off threshold stage Il HYS2 0 0 HYS3 digit 3 gt Heating controller Switch off threshold Heating controller HYS3 Ea aa 2 Switch on threshold A Cooling controller HYS4 0 0 9999 digit 5 gt Switch off threshold stage Il HYSS HYS6 0 0 digit 3 gt Cooling controller Switch off threshold Cooling controller HYS6 olde aig Response threshold 0 0 999 9 0 gt 40 64 Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 7 Parameterization PArA CC1U7866en 25 07 2014 8 Configuration ConF Here the settings e g acquisition of measured value or type of controller required directly for commissioning a certain plant
15. are made and for this reason there is no need to change them frequently Basic display User level CPr Pr i 1 or P editable nP1 or Y only display Parameter level PAA PAA Heating controller HYS1 HYS2 HYS3 Cooling controller HYS4 HYS5 HYS6 22s v Only RWF50 2 Pbl dt rt db tt 7866d12e 0212 or timeout Navigation principle 1 Configuration level ConF Conf Analog inputs nP1 One level back One level Controller atr down lt so ny Thermal shock protection rAFC Binary inputs bi nF v Display di SP Only RWF50 3 Next previous parameter Controller outputs Qut P Figure 23 Configuration Access to this level can be locked 41 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 8 Configuration ConF 25 07 2014 8 1 Analog input nP1 An analog input is available Gr 3 InP gt 1nP13 Temperature unit Parameter Value Description selection Sensor type 1 Resistance thermometer Pt100 3 wire SEn1 2 Resistance thermometer Pt100 2 wire Sensor type 3 Resistance thermometer Pt1000 3 wire 4 Resistance thermometer Pt1000 2 wire 5 Resistance thermometer LG Ni1000 3 wire 6 Resistance thermometer LG Ni1000 2 wire 7 0 135 Ohm 15 0 20 mA 16 4 20 mA 17 DC 0 10
16. changeover or setpoint shift Depending on the function selected for the binary input the effective controller setpoint can change between setpoint SP1 and setpoint SP2 or can be shifted by the amount of dSP A contact at binary input D1 controls the changeover or shift Entry The values for setpoints SP1 SP2 and dSP are to be entered at the operating level gt SP1 gt Chapter 8 2 Controller Qtr 7866a11e 0412 Active setpoint Figure 12 Setpoint changeover or setpoint shift 27 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 5 5 Response threshold q The response threshold q defines for what period of time and how much the actual value is allowed to drop before the system switches to high fire operation An internal mathematical calculation using an integration function determines the sum of all areas qeff q1 q2 q3 as shown in the graph This takes place only when the control deviation x w falls below the value of switch on threshold HYSL If the actual value increases integration is stopped If geffexceeds the preset response threshold q can be adjusted at the parameter level this causes the second burner stage to switch on or in the case of the 3 position controller modulating controller the controlling element to open If the current boiler temperature reaches the required setpoint qeffis reset
17. control loops the stability of the resulting actual value should be checked 17 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 4 Electrical connections 25 07 2014 4 2 Galvanic separation The illustration shows the maximum test voltages between the electrical circuits Analog input nP For resistor thermometer or standard signals Binary input D1 For potential free contacts USB interface Setup For PC software ACS411 Power supply measuring transducer G G DC 24 V 10 max 25 mA short circuit proof Only RWF50 3 Analog output A A 7866d02e 1212 Figure 4 Test voltages Only RWF50 2 3 position output K2 K3 KQ Relay K2 NO contact controlling element OPEN Relay K3 NO contact controlling element CLOSE Burner release 1P 1N Relay NO contact Power consumption Max 16 VAatAC 110 240 V 10 15 48 63 Hz Isolation test voltages DC 50 V AC 1500 V AC 3300 V Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 4 Electrical connections CC1U7866en 25 07 2014 4 3 Assignment of terminals Caution a ro ox OL OJE INE CUA G NC Br LI 7866209 0911 Figure 5 Assignment of terminals Outputs Display LED Connection diagram 1P
18. displayed Changing the setpoints From the basic display press so that CPr appears Press so that SP1 appears Press and SP1 flashes Press a or m to adjust the required setpoint and press to confirm Timeout Timeout after about 180 seconds CE 34 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 6 Operation 25 07 2014 6 4 Manual control modulating burner Press Eso for 5 seconds Hand appears on the lower display alternating with the value for manual control RWF50 2 Open and close fuel air ratio control by pressing a and 3 position controller Relay K2 opens the controlling element as long as a is kept depressed Relay K3 closes the controlling element as long as is kept depressed The 2 yellow arrows indicate when relay K2 opens or relay K3 closes the controlling element RWF50 3 Change angular positioning by pressing a or o Modulating controller Adopt flashing new angular positioning by pressing Per default the analog output delivers the current angular positioning Return to automatic operation by keeping so depressed for 5 seconds 35 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 6 Operation 25 07 2014 6 5 Manual control 2 stage burner Press Eso for 5 seconds Press a briefly RWF50 2 RWF50 3 Relay K2 is active The analog output delivers the highest valu
19. symbols The symbols for Caution and Attention are used in this User Manual under the following conditions A Caution This symbol is used where there may be a danger to personnel if the instructions are disregarded or not strictly observed Attention This symbol is used where damage to equipment or d data can occur if the instructions are disregarded or not strictly observed A Attention This symbol is used if precautionary measures must r 4 be taken when handling electrostatically sensitive components 9 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 1 Introduction 25 07 2014 10 64 1 2 3 Notification symbols Note S gt Reference abc Footnote Action 1 2 4 Presentation so Buttons Button combinations OF gt np Command gt I rP1 chain This symbol is used to draw your special attention to a remark This symbol refers to additional information in other documents chapters or sections Footnotes are comments referring to specific parts of the text They consist of 2 parts 1 Markings in the text are arranged as continuous superscript numbers 2 Footnote text is placed at the bottom of the page and starts with a number and a period An asterisk indicates that a required action is described The individual steps are indicated by asterisks for example Press a Buttons are shown in a circle Either symbols or text are possible
20. the set switching threshold Using the binary input a change to a second setpoint can be made or the setpoint can be shifted Standard feature is a self setting function used to determine the PID control parameters Mounting The controller insert measures 48 x 48 x 104 mm and is especially suited for installation in control panels All electrical connections are made via screw terminals at the rear of the unit 11 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 1 Introduction 25 07 2014 7866d01e 0412 12 64 1 4 Block structure gt bud gt Figure 1 Block structure gt gt Only RWF50 2 Air damper control Only RWF50 3 Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 1 Introduction CC1U7866en 25 07 2014 Location Example Product nos 2 Identification of product no 2 1 Type field The type field is glued onto the housing The arrow below indicates the product no gt RWF50 21A9 Made in Germany AC 110 240 V 10 15 48 63 Hz 16 VA h i Relays 1 3 C 250 V 1 A cos gt 0 6 US 20 T 50 IP66 IP20 o 70 00577985 VAY 0178684501013090001 C US Siemen s AG RWF50 21A9 1302250000 A C Attention Mains supply must correspond to the operating voltage given on the type field Product no Description RWF50 2
21. the type of controller operating action setpoint limits and presettings for self optimization are selected Or gt Qtr gt Parameter Value Description selection Controller type 1 3 position controller RWF50 2 GYP 2 Modulating controller RWF50 3 Controller type Operating action 1 Heating controller Act Cooling controller Control direction 1 Y 0 W Xx 7866d14 0512 0 cooling controller The controller s angular positioning Y is gt 0 when the actual value x lies above the setpoint w 1 heating controller The controller s angular positioning Y is gt 0 when the actual value x lies below the setpoint w Setpoint limitation start 1999 SPL 9999 Setpoint limitation low Setpoint limitation prevents values from being entered outside the Setpoint limitation end 1999 defined range SPH 9999 Setpoint limitation high Self optimization 0 Free 1 Locked Self optimization can only be disabled or enabled via the ACS411 setup program If disabled via ACS411 PC software self optimization cannot be started via the controller s buttons Setting in the ACS411 setup program gt Controller gt Self optimization Self optimization is also disabled when the parameter level is locked Lower working range limit 1999 g oLLo 9999 Lower operation range limit Upper working range limit 1999 g oLH 9999 Upper working range limit 43 64 Building Technologies Div
22. threshold heating controller HYS4 Switch on threshold cooling controller HYS5 Switch off threshold cooling controller HYS6 Switch off threshold cooling controller InP Analog input InP1 Analog input 1 CFF1 Correction of measured value oLH Upper working range limit ollo Lower working range limit Crt Zero point Pr User OxP Control outputs PAYA Parameter Pb Proportional range Pb1 Proportional range 1 q Response threshold qeff Sum of all integrals rAFC Thermal shock protection rAL Limit value rASL Ramp slope rat Value when out of range rt Integral action time sou End of display SAT Start of display s amp n Sensor type SG Signal type sp1 Setpoint 1 SP2 Setpoint 2 SPH Setpoint limitation end Sp Setpoint limitation start t Time t1 Power ON startup at actual value t2 Actual value of ramp stop outside tolerance band t3 Actual value returned to tolerance band 59 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 13 Key 25 07 2014 t4 Setpoint reached thermal shock protection TSS no longer active toLP Tolerance band of ramp tour Timeout tt Running time of controlling element Unit Unit of temperature W Setpoint Y Angular positioning 60 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 13 Key 25 07 2014 14 List of figures Figure 12 Block struct re 2t reti reete iet eer
23. wire circuits line balancing can be performed by making an actual value correction 12 1 2 Input signals Measuring range Measuring Impact of ambient accuracy temperature Voltage DC 0 10 V lt 0 1 100 ppm K Input resistance RE gt 2 MO Voltage DC 0 1 5 V lt 0 2 200 ppm K Input resistance RE gt 2 MO Current 0 4 20 mA lt 0 1 100 ppm K Voltage drop lt 2 V 4 Accuracies relate to the maximum measuring range 12 1 3 Binary input D1 Potentialfree contact for the following functions depending on the configuration No function Setpoint readjustment Setpoint changeover Operating mode changeover 55 64 Building Technologies Division User Manual RWF950 CC1U7866en Infrastructure amp Cities Sector 12 Technical data 25 07 2014 Only RWF50 2 Only RWF50 3 56 64 12 2 Monitoring the measuring circuit In the event of error the outputs assume defined states configurable Measuring Measured value Sensor line has Sensor line transducer crossed limit short circuit interrupted Resistance e e e thermometer Voltage 1 5 V e e e 0 5 V 0 10 V e Current 4 20 mA e e e 0 20 mA e detected e detected only if measuring range is exceeded not detected 12 3 Controller outputs QutP controller o Relay K1 NO 1P 1N burner release Contact rating Contact life Contact prote
24. 0A9 Basic version with 3 position output single pack RWF50 21A9 Basic version with 3 position output multipack RWF50 30A9 Basic version with analog output single pack RWF50 31A9 Basic version with analog output multipack 2 2 Scope of delivery Type of controller as ordered User Manual 13 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 2 Identification of product no 25 07 2014 3 Installation 3 1 Installation site and climatic conditions The installation site should be free from vibrations dust and corrosive media The controller should be installed away from sources of electromagnetic fields such as variable speed drives or high voltage ignition transformers Relative humidity lt 95 noncondensing Ambient temperature 20 50 C Storage temperature 40 70 C 3 2 Dimensions 11 8 LI go n lU B se No 3 E B EI LT L 104 48 5 43 5 ag 45 0 6 5 i Ve 7 2 1 5 l us 3 j bao MEM Ma DQ A 4 HA 7866m01 0714 48 Figure 2 Dimensions of RWF50 Key 1 USB interface setup 2 Panel cutout 14 64 Building Technologies Division User Manual RWF50
25. 1 3 3 Climatic conditions Class 3K3 Mechanical conditions Class 3M3 Temperature range 20 50 C Humidity lt 95 r h Installation altitude Max 2 000 m above sea level Attention Condensation formation of ice and ingress of water are not permitted 12 8 Segment display Height of numerals Upper display 10 mm Lower display 7mm Color Upper display Red Lower display Green Digits 4 including 0 1 or 2 decimal places configurable Range of display 1999 9999 12 9 Standards and certificates Conformity to EEC directives Electromagnetic compatibility EMC immunity 2004 108 EC Low voltage directive to DIN EN 60730 1 2006 95 EC uss ISO 9001 2008 ISO 14001 2004 Cert 00739 Cert 38233 58 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 12 Technical data 25 07 2014 13 Key A Switch on point for high fire when response threshold q is reached B Switch off point for burner bini Binary input 1 binF Binary input a Operating action Gtr Controller Gode Level lockout GF Configuration GYP Controller type db Dead band dee Decimal point dF1 Filter time constant di SL Lower display disp Display di SU Upper display dsP Setpoint dt Derivative action time End End value FANG Function HYS1 Switch on threshold heating controller HYS2 Switch off threshold heating controller HYS3 Switch off
26. 2 Suppression of interference 17 3 position controller 35 l Basic display ooooooocconcnnnnncnnnconocccnonnccnnnnnnn 33 Identification of product no 13 Basic display cernere 32 Eocaltloh nire eee dl 13 Cancel O A BP 37 Product nos sssssssssssseee 13 Changing the setpoints seusssssssse 34 Scope of delivery seessssss 13 Display of software version 38 Type field ci eR 13 Flashing actual value display 32 Installation ocean 14 Initialization ss 32 Cleaning the front sesseessssss 16 Manual control 32 Dimensions rorrnvnnonvonennrnnvnvnnvnvnnenvnnennrnevnrnnrn 14 Manual control 2 stage burner 36 Installation site and climatic conditions 14 Manual control modulating burner 35 Mounting the controller in a panel cutout 15 Meaning of display and buttons 32 Removing the controller from the panel cutout Modulating controller 35 EEE dae oh ce bed LE RC Cele ead Cuetec ead Oy 16 Parameter display 392 Side by side mounting 15 Segment test O 38 Intr
27. 4 8 5 Binary input bi nF This setting decides on the use of the binary input GrF gt bi nF gt Parameter Value Description selection Binary input 0 No function bi n1 1 Setpoint changeover Binary inputs 2 Setpoint shift 4 Changeover of operating mode Burner modulating Contacts D1 and DG open Burner 2 stage Contacts D1 and DG closed 46 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 8 Configuration ConF 25 07 2014 8 6 Display di SP By configuring the position of the decimal point and automatic changeover timer both LED indications can be adapted to the respective requirements Timeout tout for operation and the locking of levels can be configured as well CorF gt di SP gt Parameter Value Description selection Upper display Display value for upper display di SU Upper display 0 Switched off 1 Analog input I nP1 4 Controller s angular positioning 6 Setpoint 7 End value with thermal shock protection Lower display Display value for lower display di SL Lower display 0 Switched off 1 Analog input nP1 4 Controller s angular positioning 6 Setpoint 7 End value with thermal shock protection Timeout 0 Time s on completion of which the controller returns automatically to the tout 180 basic display if no button is pressed 255 Decimal point 0 No decimal place dECP 1 One decimal place Decimal point 2 Two d
28. Cue 54 11 2 Oth r cssc Ern eee os E 54 12 Technical dio et rut eco n EE Petit en et ee samde 55 12 1 Inputs a eu t hee cc a a reo reum cds dl oP 55 6 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector Contents 25 07 2014 12 1 1 Resistance therMoMmeterS occcoonncccccoccncconnnnnononcnnnnnncnnnnnnonononnnnnonanenononnnnnnnnnns 55 12 1 2 Input signals erinnere da 55 12 1 3 Binary input D tii D ee eee tenetis 55 12 2 Monitoring the measuring circuit 56 12 3 Controller outputs OP Controller O oooooonoccccnnnccoconocccocononcccnonancncnonnrccnnnnnnno 56 12 4 Controller i Dt nel ER EMIT d 56 12 5 Electrical data vc ccoo ii eee eet eden eet 57 12 6 HOUSING eee E a Ud He Letti da 57 12 7 Environmental conditions oooooooococcccccccccnnnanonnccnoncnnnnnanoncnnnnnnnnnnnnnnnnnnnnnnnnnnnnns 58 12 8 Segment display cita 58 12 9 Standards and certificates ssssssssssssssseeeeeeens 58 13 Koper 59 14 Listof figures raset e tee d esu 61 7 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector Contents 25 07 2014 1 Introduction 1 1 General notes cge Please read this User Manual before switching on the controller Keep the User Manual in a safe place which can be accessed by all users at all times Version d This User Manual describes all necessary settings applicable to controller software ver
29. SIEMENS RWF50 2 and RWF50 3 Compact universal controllers Optimized for temperature and pressure control in connection with modulating or multistage burners and air conditioning systems User Manual The RWF50 2 RWF50 3 and this User Manual are intended for use by OEMs which integrate the controllers in their products CC1U7866en Building Technologies Division 25 07 2014 Infrastructure amp Cities Sector 2 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 25 07 2014 Supplementary documentation IBEICESA TS ZUM N7866 Environmental Declaration RWF50 cooooccccnnccccccccnnccnnncccnnononnconnnnnnononnnnnnnnnnnnnnonnnnnnn E7866 3 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector Introduction 25 07 2014 4 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 25 07 2014 Contents 1 gyirere Wron oln traia 8 1 1 General Notes n cenae e tuf hens 8 1 2 Typographical conventions ssssssseeeeeene enne 9 1 2 1 Safety notes minnedagen a 9 1 2 2 Warnirig symbols nr cec ede Lote missed veu a ee Eta ue duas 9 1 2 3 Notification symbols peu EH E Oed 10 1 2 4 Presentation 10 1 3 Descrip dr 11 1 4 BlOCK StruCture ute n oe EROR 12 2 Identification of product no 0oococonocccccnooccccononcccnonnncnnnnnnncnnonnnnnnnnnnnnnnnnnnn
30. ction Max 1 A at AC 250 V at cosq gt 0 6 100 000 switching cycles at high fire Varistor Power supply for transducer G G DC 24 V 10 max 25 mA short circuit proof The following relay data are those specified by the supplier Relay K2 KQ controlling element OPEN Contact rating Contact life Contact protection Max 1 A at AC 250 V and cosq gt 0 6 100 000 switching cycles at high fire RC combination Relay K3 KQ controlling element CLOSE Contact rating Contact life Contact protection Max 1 A at AC 250 V at cos gt 0 6 100 000 switching cycles at high fire RC unit Relay data are those specified by the supplier Analog output A A Voltage DC 0 10 V short circuit proof Load resistance RLast 2500 Q Accuracy lt 0 25 50 ppm K Current 0 20 mA 4 20 mA Load resistance RLast lt 500 Q Accuracy lt 0 25 50 ppm K 12 4 Controller Type of controller RWF50 2 RWF50 3 Modulating controller Continuous controller Controller structure Sampling time P PI PD PID 250 ms Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 12 Technical data CC1U7866en 25 07 2014 12 5 Electrical data Power supply switching network section AC 110 240 V 10 15 48 63 Hz Electrical safety To DIN EN 60730 part 1 Overvoltage category II Degree of contamination 2 Power consumption Data backup
31. ctor User Manual RWF50 8 Configuration ConF CC1U7866en 25 07 2014 Only RWV50 2 Binary outputs Only RWF50 3 Analog output 8 4 Control outputs QtP With the RWF50 2 configuration of the outputs relates to the binary outputs K2 and K3 and with the RWF50 3 to the analog outputs A and A The burner is released via relay K1 The switching states of relay K1 Burner release LED green relay K2 Controlling element OPEN and relay K3 Controlling element CLOSE yellow LED arrows are indicated on the controller front The binary outputs of the RWF50 2 offer no setting choices The RWF50 3 has an analog output The analog output offers the following setting choices Or gt QutP gt Parameter Value Description selection Function 1 Analog input nP1 is delivered Fna 4 Controller s angular positioning is delivered modulating controller Function Signal type 0 0 20 mA SG 1 4 20 mA Type of signal 2 DC 0 10 V Physical output signal Value when out of 0 101 Signal in percent when measuring range is crossed range rQut 101 last output signal Value when out of range Zero point 1999 A value range of the output variable is assigned to a physical output signal CPrt 0 Zero point 9999 End value 1999 End 100 End value 9999 45 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 8 Configuration ConF 25 07 201
32. e Relay K3 is inactive depending on setting DC 10 V or 20 mA Controlling element opens Or press v briefly RWF50 2 RWF50 3 Relay K2 is inactive The analog output delivers the lowest value Relay K3 is active depending on setting DC 0 V 4 mA or 0 mA Controlling element closes Return to automatic operation by pressing so for 5 seconds 36 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 6 Operation 25 07 2014 6 6 Starting the self setting function Start Press a O for 5 seconds Cancel Cancel with 4 v SIEMENS er 28008 RWF50 2 7866204 0911 Figure 19 Display of self setting function When tUhEstops flashing the self setting function has been ended The parameters calculated by the controller are automatically adopted 37 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 6 Operation 25 07 2014 Segment test 38 64 6 7 Display of software version Press a SIEMENS a y 28008 RWF50 2 7866205 0911 Figure 20 Display of software version Press a again SIEMENS 7 28008 RWF50 X 7866212 0112 Figure 21 Display segment test 10 seconds All display segments and LEDs light up the actual value display red flashes for about Building Technologies Division Infrastructure amp Cit
33. ecimal places If the value to be displayed cannot be shown with the programmed decimal point the number of decimal places is automatically reduced If the measured value drops again the number of decimal places is increased until the programmed value is reached Locking of levels 0 No locking GodE 1 Locking of configuration level 2 Locking of parameter level 3 Locking of keyboard 47 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 8 Configuration ConF 25 07 2014 9 Self setting function 9 1 Self setting function in high fire operation Self setting function tUnEis a proper software function unit integrated in the controller In modulating mode tUnEtests in high fire operation the response of the controlled system to angular positioning steps according to a special procedure A complex control algorithm uses the response of the controlled system actual value to calculate and automatically store the control parameters for a PID or PI controller set dt 01 The tUnE procedure can be repeated any number of times Start Self setting function Identification of the controlled system PID controller draft Controlled system Controller 7866d17e 0712 Figure 24 Self setting function in high fire operation 48 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sec
34. g accuracy FE PC software ACS411 is supplied on a CD Insert CD in the CD or DVD drive Setup starts automatically Follow the instructions appearing on the screen Connect PC and controller via the USB cable New hardware is identified and USB driver installed This may take a few minutes Follow further instructions given on the screen and wait until the installation is successfully completed 10 11 Others 10 11 1 Use of USB port Use of The USB port is intended for temporary use to make the parameter settings the configuration and for work in connection with commissioning When using the USB port the controller can be securely operated tested and set with no need for using the mains cable 10 11 2 Powering the controller via the USB port Powering the controller via the port If the controller shall be powered via the USB port a HUB with power supply is required capable of delivering at least 500 mA at every outlet When supplying power via the USB port relays and analog output are deenergized to reduce power consumption The measuring accuracy specified in chapter 12 Technical data does not apply when powering the controller via the USB port 53 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 10 PC software ACS411 25 07 2014 11 What to do if 11 1 Alarm messages Display Cause Remedy 9999 flashing SIE NS
35. g process must not exceed the upper threshold of the thermostat function increase if necessary and lower the setpoint 49 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 9 Self setting function 25 07 2014 9 2 Checking the controller parameters Optimum adjustment of the controller to the controlled system can be checked by recording a startup sequence with the control loop closed The following diagrams indicate possible incorrect adjustments and their correction Example The response to a setpoint change is shown here for a 3rd order controlled system for a PID controller The method used for adjusting the controller parameters can however also be applied to other controlled systems A suitable value for dt is rt 4 Pbtoo small Pbtoo large X X Ww Ww t t 7865d17 1099 7865d15 1099 Figure 27 Pbtoo small Figure 28 Pbtoo large rt dt too small rt dt too large X X w w t t 7865d16 1099 7865d14 1099 Figure 29 rt dt too small Figure 30 rt dt too large Optimum adjustment X Ww t 7865d18 1099 Figure 31 Optimum adjustment 50 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 9 Self setting function 25 07 2014 10 PC software ACS411 PC software ACS411 is an operating module for use with the RWF50 universal controller and designed for the following basic tasks e Visualization of system state coverin
36. g the following data Parameters Process data Configuration and parameterization of the controller individual parameters Saving and restoration of parameter sets A USB cable can be used to establish the connection between PC USB plug type A 4 pins and RWF50 USB plug type Mini B 5 pins a ouensesonste 10 1 Safety notes 10 2 Setting the correct system parameters 10 3 Changing the parameters A 51 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 10 PC software ACS411 25 07 2014 10 4 Place of installation 10 5 License and liability regulations E 10 6 Procurement of PC software ACS411 For ordering the ACS411 software and updates please contact your supplier or heating engineer 10 7 Languages PC software ACS411 is available in English and German To select the language you require go to program menu item File gt Default settings gt Program language ACS411 setup program must be restarted 10 8 Operating systems Operating Windows 2000 SP4 Windows 7 32 bit Windows 7 64 bit Windows VISTA Windows XP 10 9 Prerequisites for hardware Free hard disk memory 300 MB RAM 512 MB 52 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 10 PC software ACS411 25 07 2014 10 10 Installation Use Using the HUB Using the Switching off Switching off Measurin
37. ies Sector User Manual RWF50 6 Operation CC1U7866en 25 07 2014 7 Parameterization PATA Here set the parameters associated directly with the controller s adaptation to the controlled system after the plant has been put into operation Basic display User level CPr Pr gt SP1 or P editable nP1 or Y only display Parameter level PAA PAA Heating controller HYS1 HYS2 HYS3 Cooling controller HYS4 HYS5 HYS6 22s v Only RWF50 2 Pbl dt rt db tt 7866d12e 0212 or timeout Navigation principle 1 Configuration level ConF GonF gt Analog inputs nP1 One level back Sapa Controller Gtr E Thermal shock protection rAFC Binary inputs bi nF v Display di SP Only RWF50 3 Next previous parameter Controller outputs Qut P Figure 22 Parameterization Access to this level can be locked N ARN From the basic display press so that CPr appears Press so that PArAappears Press so that the first parameter of the parameter level is displayed 39 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 7 Parameterization PArA 25 07 2014 Display of controller parameters The parameters are shown on the lower setpoint display green
38. ision User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 8 Configuration ConF 25 07 2014 8 3 Thermal shock protection TSS rAFC The RWF50 can be operated as a fixed value controller with or without ramp function OF gt rAFC gt Parameter Value Description selection Function 0 Switched off Fna 1 Gradient Kelvin minute Function 2 Gradient Kelvin hour Ramp slope 0 0 Slope of ramp slope only with functions 1 and 2 rASL 999 9 Ramp slope Tolerance band 2 x HYS1 Width of tolerance band in K about the setpoint ramp z only with function 1 and 2 toLP 10 9999 Tolerance band ramp Heating controller Smallest possible factory setting 2 x HYS1 10 K To monitor the actual value in connection with thermal shock protection TSS a tolerance band can be laid about the setpoint curve If the limit values are crossed the ramp is stopped agar Temal shock prosten ISS Cooling controller Smallest possible factory setting 2 x H SA 10K GSC Limit value 0 250 Heating controller ral If the actual value lies below this limit value the setpoint is approached in the Ramp limit form of a ramp until final setpoint SP1 is reached Cooling controller If the actual value lies above this limit value the setpoint is approached in the form of a ramp until final setpoint SP1 is reached 44 64 Building Technologies Division Infrastructure amp Cities Se
39. lay ai amanda p di 33 Figure 19 Display of self setting function 37 Figure 20 Display of software version rrrrnnrrnnrrnnrnrrrnnrnnrnnnrrnnnnnrnnnnnnnrnnnnnnrrnnnnnnrnn 38 Figure 21 Display segment test nennen 38 Figure 22 Parameterization ooooooocccccnncccnnnnonoconnncnonnnnnnnnconoconnnnnnnnncnnnnnnnnnnnnnern nn tnnt 39 Figure 23 Configuration sssesssssssssssssssssees eene enne enne nnne 41 Figure 24 Self setting function in high fire operation ooooonnccccnnicccccnnnocccccnnncccononnnccnnns 48 Figure 25 Great difference between actual value and setpoint ssss 49 Figure 26 Small control deviation rerrnonnrrnnronnrrnnrnnnrnnnrnnnnnnnrnnnnnnrnnnnnnnrnnnnnnrrnnnnnnnn 49 Figure 27 Pbtoo small eene nennen nnne 50 Figure 28 Pbtoo large nennen nenne nennen eneen 50 Figure 29 rt dt too small ooooonnccccccnocccccoooonnccononnncnonnnnnononnnnnonononnnononnnnnnnonnnnnnnnnnnon 50 Figure 30 rt dt too large nere 50 Figure 31 Optimum adjustment ccecceccceeeceeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeesseeeeeseeeees 50 61 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 14 List of figures 25 07 2014 Index A Cooling controller ssss 11 ACS411 Correct use coi Is ecu 9 Changing the parameters 51 Description
40. mode A C TT A v 7866d10 0911 Figure 14 Control sequence Cold start of plant 29 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 Cooling controller Cold start of plant also works when the RWF50 is used as a cooling controller In that case the limit value is calculated as follows Limit value 2 x HYS4 HYS6 Example Operating mode Modulating 3 position output HYS4 5 K HYS6 5 K 30 C Limit value 2 x 5 5 2 x 10 20 K When the actual value lies above 10 C cooling is immediately started in high fire mode in place of low fire mode 30 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 5 7 Thermal shock protection TSS Interlocking e The controller comes with thermal shock protection TSS deactivated it can be activated at the configuration level y Function The function is automatically activated when the actual value drops below the adjustable limit value rAL exceeds the adjustable limit value with the cooling controller In that case the setpoint is approached via a ramp function Gradient and slope of the ramp rASLare adjustable The setpoint ramp has a symmetrical tolerance band toLP If during the startup phase the actual value leaves the tolerance band the setpoint ramp is stop
41. n sessessssse 48 Ww A 49 What to do il tania 54 Checking the controller parameters 50 Alarm messages ssses 54 Conditions co ete optet ee ets 49 Others ROM 54 63 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector Index 25 07 2014 Siemens AG Infrastructure 8 Cities Sector Building Technologies Division Berliner Ring 23 D 76437 Rastatt Tel 49 7222 598 279 Fax 49 7222 598 269 www siemens com 64 64 2014 Siemens AG Infrastructure amp Cities Sector Building Technologies Division Subject to change Building Technologies Division User Manual RWF50 Infrastructure amp Cities Sector CC1U7866en 25 07 2014
42. ng display gt Manual control The setpoint display green shows H4nd flashing y 32 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 6 Operation 25 07 2014 6 2 Basic display When switching power on the displays show hyphens for about 5 seconds SIEMENS a 7 28008 RWF50 X 7866211 0112 Figure 17 Display start The state that follows is called normal display Default display is the actual value and the current setpoint Other values can be displayed at the configuration level or via PC software ACS411 Manual control self setting the user parameter and configuration levels can be activated from here Setpoint SP1 increase factory set Basic display User level CPr Pr Editable SP1 SP2 or dSP Only display I P Y PArA ConF 7866d11e 0212 Navigation principle One level back 4 One level Setpoint SP1 reduce down factory set lt lt gt s i or timeout Next previous parameter Figure 18 Basic display 33 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 6 Operation 25 07 2014 6 3 User level This level is started from the basic display Setpoints SP1 SP2 or dSP can be altered The values of nP analog input and Y current angular positioning between 0 100 can be
43. nnnannns 13 2 1 Type field so idt is coe de He dtes 13 2 2 SCOPE of delivery cis taco EUR URBS ente edo aida ale 13 3 Installation s 5x itr Pe e RD E PUER as 14 3 1 Installation site and climatic conditions eeeeeeeeeeeeee 14 3 2 DIMENSIONS us m pint Ie fU e REUS EISE RES 14 3 3 Side by side MOUNTING eccccceeeecceeeeeeceeeeeeeeeeeeeeaeeeeeeeaeeeeseneeeeetsneeeestaees 15 3 4 Mounting the controller in a panel CUtOUt ooccccccccncccccccccccconananaccncnnnnnanannnos 15 3 5 Removing the controller from the panel Cutout cceeeeeeeeseeeeeeeeteeees 16 3 6 Gleaning the front 1 i e UU RU Rt 16 4 Electrical connections cseeeeeesessseseseseseeessee eene nennen nennen nnne 17 4 1 Installation notes ended nee slem cbe dre de ee Cede 17 4 2 ENEE 18 4 3 Assignment of terminals oooooocccconnoccconocccocononccnnonnnnnnnnnnnnonnnnnncnnnnnnnnnnnnnnnnnnnnns 19 5 ST 21 5 1 NS 21 5 2 High fire operation eene nennen nnne 22 5 2 1 Modulating burner 3 position output 22 5 2 2 Modulating burner analog OUtpUt ocooonocooccccnccccccccnncnononcnnnncnnnnnnnnncnnnnnnnnnnnnnns 23 5 2 3 2 stage burner 3 position OUtpUt ooooooooccccnnccnnccooocccncccnnnnnannncnnnnnnnnnnannccnnnnnnnns 24 5 2 4 2 stage burner analog output ssssennen 25 5 3 Burner shutdown reri a 26 5 4 Predefined setpolnt is reU CU HR Seiser 27 5 5 Response threshold 0
44. oduction ic icono 8 Self setting function 32 Block structure 12 Start uoo suu pe ens 37 Control ue RE 11 Starting the self setting function 37 echnologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 14 List of figures 25 07 2014 TIMEOUT ERE 34 Self setting function in high fire operation 48 User level 34 T P Technical data ssssssssess 55 Parameterization Binary input D1 l 55 Display of controller parameters 40 Controller sssssssssesesee 56 Parameterization PArA ssssssssssssss 39 Controller outputs OP ssueussss 56 PC software ACS411 Electrical data lt i rh 57 Measuring accuracy ee 53 Environmental conditions 58 Operating systems seseeessess 52 Housing nennen Benet BIS 57 Powering the controller via the USB port 53 Input signals nni here BRE 55 Use of USB pott 53 Inputs iii ia 55 Using the HUB eee 53 Monitoring the measuring circuit 56 PC Software ACS411 Resistance thermometers 55 Switching off 53 Segment display sesssess 58 S Standards and certificates 58 Self setting functio
45. oo eee eeeeeeeeeereneeeeaes 43 Cooling controller 21 23 25 28 30 Display di P 0 0eeaeeeeeeeeeeeeeeeeeeeeeeeeeereereneenne 47 hide 27 Thermal shock protection TSS rAFC 44 Heating controller 21 29 Configuration COnF seenene 41 High fire operation ssessssse 22 E Interlocking 29 31 Electrical connection Low fire operation eeeseeesses 21 Connection of external components 17 Modulating burner 3 position output 22 Electrical connections esssess 17 Modulating burner analog output 23 Assignment of terminals 19 Operating mode changeover 22 FUSING Larsen 17 Predefined setpoint sssse 27 Galvanic separation sssssss 18 Response threshold q 28 Incorrect use eno ate 17 Setpoint changeover or setpoint shift 27 Installation notes sseesssss 17 Thermal shock protection 31 Safety regulations sessssss 17 Thermostat function ssssss 21 Screw terminals sse 17 Operation none ii 3
46. output Area 3 If the actual value exceeds the upper switch off threshold HYS3 in spite of the lowest heating stage the controller switches the burner off B The controller only starts low fire operation when the actual value falls below switch on threshold HYS1 again If the response threshold q is exceeded the controller switches to high fire operation A 22 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 Only RWF50 3 Area 1 Area 2 5 2 2 Modulating burner analog output Thermostat function active The RWF50 3 as a modulating controller provides control to the adjusted setpoint Angular positioning is ensured via the analog output in the form of a standard signal B Area 3 Cooling controller 1 2 3 Figure 9 Control sequence of modulating burner analog output The controller behaves as described in chapter 5 2 1 Modulating burner 3 position output If the controller is set to cooling mode the respective values HYS4 and HYS6 apply Starting from a high actual value the controller now controls the connected cooling equipment in low fire operation In high fire operation the cooling output is controlled via relays K2 and K3 or the analog output The response threshold q calculates automatically now in the reverse sense the point from which the cooling out
47. ped until the actual value returns to a level within the tolerance band The startup phase is ended when the setpoint of the ramp function reaches the final setpoint SP1 Temperature SP1 gg A 7866d20e 0212 ral I 5 58 tolP t1 t2 t3 t4 t Figure 15 Thermal shock protection TSS Key Setpoint w Actual value x 31 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 6 Operation 6 1 Meaning of display and buttons Burner release Operating mode 2 stage Actual value display red and parameter value Controlling USB LED element CLOSE Setpoint display green Controlling and parameter symbol element OPEN Enter button ESC button Decrease value Increase value 7866203e 0212 Figure 16 Meaning of display and buttons Initialization The two 7 segment displays red and green show hyphens and all LEDs light up for about 5 seconds Basic display The upper display red shows the actual value The lower display green shows the setpoint gt Parameter display When entering parameters the parameter symbol at the bottom green and the set value at the top red appear Self setting function The actual value is shown on the actual value display red and tUnEflashes on the setpoint display green gt gt Flashing actual value The actual value display red shows 9999 flashi
48. put is to be increased 23 64 Building Technologies Division Infrastructure amp Cities Sector User Manual RWF50 CC1U7866en 5 Operating modes 25 07 2014 5 2 3 2 stage burner 3 position output Only RWF50 2 In area 1 the thermostat function is active In area 2 the RWF50 2 as a 2 position controller acts on the second stage via relay K2 OPEN and relay K3 CLOSE by switching on at switch on threshold HYS1 and switching off at switch off threshold HYS2 B H953 HYSe HYS I EE s A T Tl cese 1 2 3 Figure 10 Control sequence of 2 stage burner 3 position output In area 3 the actual value exceeds the upper switch off threshold HYS3 and the controller shuts down the burner B The controller only starts low fire operation when the actual value falls again below switch on threshold HYSL If the response threshold q is exceeded the controller switches to high fire operation A c Reference See chapter 5 5 Response threshold q 24 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 Only RWF50 3 5 2 4 2 stage burner analog output In this case a digital standard signal switches the second stage on via the analog output terminals A and A when reaching switch on threshold HYS1 and off at the lower switch off threshold HYS2
49. r burner output but first makes a dynamic test of the control deviation and switches to the higher output only when an adjustable threshold q is exceeded A Operating mode In high fire operation depending on the application the burner can be fired in changeover modulating or 2 stage operation then burning larger amounts of fuel than in low fire operation Binary input D1 can be used to switch between modulating and 2 stage operation Contacts D1 and DG open Modulating burner operation Contacts D1 and DG closed 2 stage burner operation 5 2 1 Modulating burner 3 position output Only RWF50 2 Area 1 In area 1 the thermostat function is active The lowest burner stage is switched on below switch on threshold HYS1 and switched off above switch off threshold HYS3 NEU GEN GT GE 1 2 3 Figure 8 Control sequence of modulating burner 3 position output Area 2 Here operating mode Modulating burner is shown In high fire operation the 3 position controller acts on an actuator via relay K2 OPEN and relay K3 CLOSE When the actual value falls below the setpoint the response threshold q at point A is reached and the controlling element opens greater heat output When the actual value lies within the dead band db the controlling element remains inactive When the actual value exceeds db the controlling element closes smaller heat
50. sion XXX 01 01 unauthorized manipulations on the unit You could endanger your rights Should any problems arise during commissioning do not make any under the warranty terms Please contact us in such a case 8 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 1 Introduction 25 07 2014 Qualified personnel Correct use 1 2 Typographical conventions 1 2 1 Safety notes This User Manual contains information which must be observed to ensure your own personal safety and to prevent damage to equipment and property The instructions and notes are highlighted by warning triangles a hand or arrow symbol and are presented as follows depending on the hazard level Only qualified personnel are allowed to install and operate the equipment Qualified personnel in the context of the safety related notes contained in this document are persons who are authorized to commission ground and tag devices systems and electrical circuits in compliance with established safety practices and standards Note the following The controller may only be used on the applications described in the technical documentation and only in connection with devices or components from other suppliers that have been approved or recommended by Siemens The product can only function correctly and safely if shipped stored set up and installed correctly and operated and maintained as specified 1 2 2 Warning
51. to 0 Temperature C 7866d09e 0412 t Qer 0 Figure 13 Control sequence response threshold q In contrast to time dependent switching on load dependent switching on offers the advantage of capturing the dynamics of the actual value Also monitoring the progression of the actual value during the change from low fire to high fire ensures low switching frequencies to reduce wear and to extend running times Cooling controller The response threshold q also works in the reverse sense in the case of cooling mode 28 64 Building Technologies Division User Manual RWF50 CC1U7866en Infrastructure amp Cities Sector 5 Operating modes 25 07 2014 5 6 Cold start of plant Interlocking Heating controller When a heating system is switched off for a longer period of time the actual value will drop of course To achieve a faster control response the controller immediately starts in high fire operation as soon as the control deviation x w drops below a certain limit value This limit is calculated as follows Limit value 2 x HYS1 HYS3 In that case the response threshold q is inactive independent of operating mode and controlled variable temperature or pressure Example Operating mode Modulating 3 position output HYS1 5 K HYS3 5 K w 60 C Limit value 2 x 5 5 2 x 10 20 K At an actual value below 40 C heating up immediately starts in low fire operation and not in thermostat
52. tor 9 Self setting function 25 07 2014 2 procedures The tUnEfunction uses 2 different methods that are automatically selected depending on the dynamic state of the actual value and the deviation from the setpoint at startup tUNE can be started from within any dynamic actual value sequence If there is a great difference between actual value and setpoint when tUnEis activated a switching line is established about which the controlled variable performs forced oscillations during the self setting process The switching line is set to such a level that the actual value should not exceed the setpoint se pp SE AE Switching level 7866d18e 1011 t Figure 25 Great difference between actual value and setpoint With a small deviation between setpoint and actual value after the controlled system has settled for instance forced oscillation about the setpoint is performed 7866d19 0911 Figure 26 Small control deviation The data of the controlled system recorded for the forced oscillations are used to calculate the controller parameters rt dt Pbl and a filter time constant dF1 for actual value filtering that is optimized for this controlled system Conditions High fire operation in modulating burner mode The thermostat function relay K1 must be constantly activated otherwise tUnE will be canceled and no optimized controller parameters will be adopted The above mentioned actual value oscillations during the self settin

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