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10.3.5 2-stage frost protection on the water side (NI)

This picture shows an application with 2-stage, water-side frost protection:

Application example

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01

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X1

x Y

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LABEL

FRST

Notes on engineering

Observe the following points with regard to sensor placement and the heating
circuit pump:

•

Reliable frost protection depends on correct sensor placement!
Position the sensor in or on the water-side outlet of the air heating coil within the
air duct

•

As an additional protection function, the heating circuit pump must switch on
automatically at outside temperatures below 5 °C (setting value "On according to
outside temperature", refer to chapter 8 “Pump (PUMP x)”

If the temperature falls below the set starting point (= limit value + 2 K + P-band),
the heating sequences are steplessly opened and the cooling sequences are
steplessly closed. The purpose is to prevent the temperature from falling below the
"frost hazard" limit value (SET-ON).

Temperature drops
below starting point

If the temperature still drops below the above limit value, the following reactions are
triggered:

Actions if temperature
drops below limit value

•

The fan release relay is deenergized (no release of fan)

•

The control loop configured with the air heating coil at risk from frost switches off
all cooling sequences and opens all heating sequences to 100% It also switches
on the air heating coil pump.
=> Important: Step switches are also switched on in the process!

•

If 2 controllers are configured in the RLU2…, the second (other) control loop is
switched off as well

•

The outside air dampers are closed

142 / 174

Siemens

Universal Controllers RLU2…

CE1P3101en

Building Technologies

Frost protection (FROST)

29.08.2008

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Содержание Synco 200

Страница 1: ...s Synco 200 Universal Controllers RLU2 Basic Documentation Version 2 3 CE1P3101en 29 08 2008 Building Technologies ...

Страница 2: ... International Headquarters Gubelstrasse 22 CH 6301 Zug Tel 41 41 724 24 24 Fax 41 41 724 35 22 www siemens com sbt 2005 2008 Siemens Switzerland Ltd Subject to change 2 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies 29 08 2008 ...

Страница 3: ...ng test 28 4 6 Leaving commissioning 29 5 General settings 30 5 1 Selecting the unit 30 5 2 Device information 30 6 Operating modes 31 6 1 Basic types 31 6 2 Room mode selection via digital inputs 32 6 3 Fan release ALM OFF 34 7 Inputs 36 7 1 Universal inputs X1 X5 36 7 2 Analog inputs X1 X5 38 7 3 Digital inputs D1 D2 X1 X5 44 7 4 Remote setpoint absolute REM 46 7 5 Remote setpoint relative REL 4...

Страница 4: ...on 129 9 10 Universal setpoint shift 131 9 11 Deviation message DV ALM 133 10 Frost protection FROST 136 10 1 Purpose and types of monitoring 136 10 2 Activating the function block 136 10 3 Operating principles and settings 137 10 4 Acknowledgement reset AKN 145 10 5 Display 145 10 6 Connection diagrams 146 10 7 Troubleshooting 147 11 Help in the case of faults 148 11 1 Fault list 148 11 2 Rectifi...

Страница 5: ...able revised 4 On displays and in reference texts New Info symbol CHK is now INFO EXP is now PASS New arrangement of the 9 navigation fields 4 3 2 Subsection Warning added 4 3 3 Note added 4 4 1 Subsection HIT tool added 6 3 Text completely revised due to revised function 7 New input identifier SAT meaning supply air temperature 7 7 2 Subsection Fault status signals added 7 8 New section Supply ai...

Страница 6: ... control now integrated in new section Control strategies and setpoints for controller 1 basic type A 9 2 1 Table and texts completely revised 9 2 2 Subsection Setpoint limitations with graph added 9 2 3 Completely revised 9 2 4 Added 9 2 5 Revised second table added 9 2 6 Revised 9 2 7 Revised 9 2 8 Revised 9 2 9 New 9 3 New title Control strategies and setpoints for universal controllers 9 3 Int...

Страница 7: ...iagram adapted 10 3 4 New 10 3 5 Graph in subsection Function diagram adapted 10 3 6 New 10 6 Legend New device designations 11 1 Column Effect with page number references deleted 13 2 Operating texts adapted and reduced to texts effectively required 13 3 2 Revised 13 3 3 Graphs adapted Index list extended 7 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies About this documen...

Страница 8: ... subsequent versions Documents are automatically amended as a consequence of modifications and corrections to the products described Please make sure that you are aware of the latest document revision date If you find lack of clarity while using this document or if you have any criticism or suggestions please contact the Product Manager in your nearest Siemens BT branch office or the Support Team ...

Страница 9: ...ations please visit the intranet for Siemens staff members only https workspace sbt siemens com content 00001123 default aspx contact the Siemens BT branch office nearest you www siemens com sbt or your system supplier get in touch with the Support Team at the headquarters in Switzerland fieldsupport zug ch sbt siemens com if you don t find a local contact person Siemens assumes no liability to th...

Страница 10: ...sal controller RLU202 N3101 Universal controller RLU222 N3101 Universal controller RLU232 N3101 Universal controller RLU236 N3101 Devices Name Type Data Sheet Flush panel mounting frame ARG62 201 N3101 Mounting accessories The following pictures show the controller versions with large and small housing variants Housing variants RLU202 RLU220 RLU222 RLU232 RLU236 10 174 Siemens Universal Controller...

Страница 11: ...igital time switch 1 channel SEH62 1 N5243 Transformers Transformers complete with housing SEM62 N5536 Service equipment Service tool OCI700 1 N5655 2 3 Product documentation The following product documentation provides detailed information on safe and intended use and operation of Synco 200 products in building services plants Supplementary information Type of document Document no Basic Documenta...

Страница 12: ... 3 Analog output 0 2 2 3 3 Heat recovery 0 1 1 1 1 Variable step switch 1 6 steps 0 0 0 0 1 Mixed air temperature control 0 1 1 1 1 Variable step switch 1 2 steps 1 0 1 1 1 Linear step switch 1 6 steps 0 0 0 0 1 Linear step switch 1 2 steps 0 0 0 1 0 Binary step switch 1 4 steps 0 0 0 0 1 Binary step switch 1 2 steps 0 0 0 1 0 3 position output 1 0 1 0 0 Universal controller _ 1 1 1 1 1 Universal ...

Страница 13: ...ins voltage from AC 24 V safety extra low voltage SELV to protect against electrical shock Wiring For storage and transport the limits given in the relevant Data Sheets must always be observed Storage and transport Contact your supplier or Siemens BT if you have any questions Synco 200 products are maintenance free and require only cleaning at regular intervals We recommend removing dust and dirt ...

Страница 14: ...RA APPL ID INFO SET SERVICE PASS PARA SET CONF TEST X5 D1 D2 1 X1 X2 2 X3 X4 MODE 3P Legend Item Designation Properties function 1 Display Backlit segment display 2 and buttons Navigate and adjust values 3 OK button Confirm navigation and value entries 4 ESC button Return to the previous menu or abort value entries 14 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Operatio...

Страница 15: ...D1 D2 1 X1 X2 2 X3 X4 MODE 3P Legend Item Designation 1 Display of Info page 2 Display of access levels 3 Menu navigation 4 Display of measured variables operating modes 5 Function block navigation Display corresponds to configuration diagram 6 Function block instances 7 Information segments 7 characters Data point description mnemonic 8 Value segments 4 characters Display of data point values 9 D...

Страница 16: ...tep switch FB INFO Inputs outputs 3P 3 position output FB CONF Extra configuration Instances PARA Settings 1 Instance 1 SET Setpoints adjustable 2 Instance 2 Measured variables operating modes 3 Instance 3 Outside temperature LIN Linear step switch Room temperature BIN Binary step switch Supply air temperature Units Fault F Degrees Fahrenheit Room operating mode Comfort C Degrees Celsius Room oper...

Страница 17: ...erm that includes The term data point in Synco 200 Real data points with a physical connection to the plant and Virtual data points with no direct connection to the mechanical and electrical systems e g defined in the software only e g setpoints All data points are set and read via operating lines on the menu structure The operating elements allow you to select display and set data points setting ...

Страница 18: ...and presentation of Info pages depend on the selected application The pages are arranged as an infinite sequence C SET SET 1 Main menu The navigation buttons switch the display between the various data points e g to the SETHEAT setpoint in this example Change values 1 Press the OK button 2 Use the navigation buttons to change the value e g to 21 0 C in this example 3 Press the OK button the new va...

Страница 19: ...rd level for commissioning 1 Simultaneously press the OK and ESC buttons 2 Press the buttons to select password level PASS 3 Press the OK button to confirm your choice 4 When PASSWRD is displayed press the button to select figure 2 5 Press the OK button to confirm your choice PASS The 3 access levels share the following properties Common properties The access level determines which individual menu...

Страница 20: ...This Info page shows the voltage at terminals Y1 Y3 Y1 3 0 3 9 V Y2 9 0 10 0 V Y3 0 0 0 9 V This Info page shows the state of relay outputs Q1 Q2 Q1 0 open Q2 1 closed SERVICE This Info page shows the state of relay outputs Q1 Q3 Q1 0 open Q2 1 closed Q3 0 open Examples 20 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Operation 29 08 2008 ...

Страница 21: ... Main menu SET Setpoints Main menu INFO IInputs outputs PARA Settings SET Setpoints Main menu COMMIS Commissioning PARA Settings SET Setpoints APPL ID Basic configuration CONF Extra configuration TEST Wiring test INFO IInputs outputs PARA Settings SET Setpoints At the user level the OK button switches the menu directly to the SET setpoint list where you can use the UP and DOWN buttons to select an...

Страница 22: ...parameterization Result PARA blinks 3 Confirm your selection by pressing the OK button SERVICE PARA X5 1 X1 X2 2 X3 X4 MODE 3P Result Function block selection appears and the first function block X1 blinks SERVICE PARA X5 1 X1 X2 2 X3 X4 MODE 3P 4 Press the button to navigate to menu entry CTLOOP 1 5 Confirm your selection by pressing the OK button Result Parameter selection appears see next pictu...

Страница 23: ...r supply is applied Note Procedure The control process remains deactivated in commissioning mode all outputs are set to a defined OFF state on controller power up All of the controller s internal safety features are also deactivated The controller displays the following settings as soon as it is powered up Factory settings Access level PASS password level COMMIS commissioning menu with blinking su...

Страница 24: ...he controller indicates that the plant will be stopped Plant is stopped COMMIS PASS Pressing the OK button produces the following results The controller stops the plant and deactivates the control process All outputs are set to a defined OFF state It also deactivates all of the controller s internal safety features The submenus of COMMIS commissioning appear the first menu PARA blinks 24 174 Sieme...

Страница 25: ...ications Selection The simplest commissioning method is to activate one of the programmed applications The programmed applications are described in the Application Catalog and in the HIT The APPL ID line displays the following A01 Selection example Meaning A This standard application corresponds to basic type A 01 First number of the internally loaded standard application Empty applications are di...

Страница 26: ...lication number has already been selected and is then changed an asterisk Â appears in front of the basic type or application number Note Path INFO Display values Display Name Comments APPL ID Plant type Original ORIG Adapted ADAP APPL ID Plant type Display of basic type or application number 26 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Commissioning 29 08 2008 ...

Страница 27: ...r more information about the free HIT please visit the following intranet page HIT https intranet sbt siemens com hvp en technical_support hit asp 4 4 2 Adapted application The programmed application doesn t quite fit but an adapted application is described in the Application Catalog Make the appropriate settings on the CONF additional configuration menu to adapt the application The golden middle ...

Страница 28: ...ches where the relays are switched The application is deactivated during the wiring test The outputs are in a defined OFF state and safety related functions e g frost protection are deactivated The wiring test provides checks for the following errors at the inputs and outputs Error checks Connection error mixed up wires Position error mixed up sensors or actuating devices Discrepancies between con...

Страница 29: ...ults Plant is started Application starts All sensors are checked and Existing sensors are marked for future fault status messages The display changes to the next higher menu level and the first menu symbol COMMIS blinks PASS PARA COMMIS SET INFO Now press the ESC button twice The controller will display an Info page like the following if it is in normal mode Exit PASS 29 174 Siemens Universal Cont...

Страница 30: ...ing values Path PARA MODE Display Name Range Factory setting UNIT Unit C F C 5 2 Device information You can view the SW version at the service and password levels Display values Path INFO Display Name Comments SW VERS Software version 30 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies General settings 29 08 2008 ...

Страница 31: ...ontroller Basic type U controller 1 is a universal controller In normal operation the operating mode for basic types A and U is preselectable via digital inputs D1 D2 e g by an external time switch or manual switch Operating modes There are the following 3 operating modes Comfort Economy Protection 31 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Operating modes 29 08 200...

Страница 32: ...t is the operating mode for the occupied room The room state is within the comfort envelope in terms of temperature humidity etc 0 1 Economy Economy is an energy saving operating mode for the room if Comfort mode is not required for a given period In Economy mode the control process operates with setpoints that may differ from the Comfort mode setpoints Switching to Economy mode is usually done vi...

Страница 33: ...er between Comfort Protection default or Comfort Economy with the hard wired D1 input via parameter settings as an additional function Errors in operation Troubleshooting The digital signals cannot be monitored The controller interprets missing inputs as if the physical input is not connected We recommend configuring the control inputs to be open in the normal position NORMPOS OPEN Configuration e...

Страница 34: ...n OFF Switching relay energized Fan released This application example shows a fan controlled by a time switch switching on off Connection diagram Q11 Q14 G0 N1 AC 24 V M AC 230 V K2 Q11 Q14 Q12 K2 Fan H1 K2 RLU232 The time switch determines the controller s operating mode via relay K2 at operating mode input D1 Comfort or Protection The controller provides for changeover of operating mode or setpo...

Страница 35: ...y Name Comments ALM OFF Fan release relay YES fan released no alarm relay energized NO fault status message relay deenergized Fan OFF Pfad COMMIS TEST Wiring test Display Name Positions ALM OFF Fan release relay YES fan released no alarm relay energized NO fault status message relay deenergized Fan OFF 35 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Operating modes 29 08...

Страница 36: ...ssive analog signals Active analog signals Depending on the type of RLU2 universal controller the following numbers of universal inputs Xx are available Number of universal inputs Controller type Number of universal inputs Xx RLU202 4 RLU202 4 RLU222 4 RLU232 5 RLU236 5 36 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Inputs 29 08 2008 ...

Страница 37: ...l place resolution 99 9 999 9 increment 0 1 0000 Universal input without decimal place resolution 999 9999 increment 1 REMx Absolute setpoint adjuster REL Rem setp adjuster relative in K F range 3 3 K FRST Frost protection DIG Digital There are 2 special features with regard to the assignment of the physical unit Notes on units The unit of room temperature supply air temperature and outside temper...

Страница 38: ...emperature signals Passive temperature signals Temperature signal Measuring range LG Ni1000 50 250 C fixed 2 x LG Ni1000 or T1 50 150 C fixed Pt1000 50 400 C fixed In the case of active signals the measuring range can be entered Both an upper and a lower measured value is required Active signals Active DC 0 10 V temperature signals have a default measuring range of 0 200 C but they are adjustable ...

Страница 39: ...rrection can be entered for passive temperature sensors in order to compensate for line resistance Compensation of line resistance This can be used to perform on site calibration with a reference measuring unit 7 2 5 Special analog inputs Certain sensors are required for special functions such as pump ON at low outside temperatures Therefore the following analog inputs provide additional special f...

Страница 40: ...ed according to the following diagram Averaging with 4 x LG Ni1000 G G G0 X M G0 B N 3101A08 AC 24 V B M LG Ni 1000 B M LG Ni 1000 B B B M LG Ni 1000 B M LG Ni 1000 B 2 passive LG Ni1000 temperature sensors can be connected to the input The control process uses them to calculate the average temperature The sensors must be connected according to the following diagram Connection diagram for 2x LG Ni...

Страница 41: ...ing to the following diagram Connection diagram for DC 0 10 V G G G0 G0 N 3101A11 AC 24 V X M G1 B B M G A passive setpoint adjuster e g BSG21 1 or QAA25 can be connected to the input It must be connected according to the following diagram Connection diagram for 0 1000 Ω M B1 BSG21 1 3101A12 1 2 G R M G G0 X M G0 QAA25 N1 AC 24 V G G G0 X M G0 N1 AC 24 V 41 174 Siemens Universal Controllers RLU2 C...

Страница 42: ...message is also delivered and the affected sensor is presented on the display as Xx ooo If a sensor is used for the main controlled variable and an error occurs later on during operation the plant is shut down that is the outputs are set to OFF or 0 If you change an input identifier after configuration of the other blocks is completed the controller may deactivate some functions of the other block...

Страница 43: ...orrection 3 0 3 0 with C only 0 K Path INFO Display values Display Name Comments X1 X1 Display of current measured value at terminal X1 X5 X5 Display of current measured value at terminal X5 Path COMMIS TEST Wiring test Display Name Positions X1 X1 Display of current measured value at terminal X1 non adjustable X5 X5 Display of current measured value at terminal X5 non adjustable Display Name Effe...

Страница 44: ... positions can be selected Open Closed OPEN CLSD Only potential free contacts can be connected to the digital inputs Connection diagram G G G0 X G0 N 3101A13 AC 24 V M F Δp X M F The digital signals cannot be monitored If an important protection function such as a frost protection unit is connected to this input we recommend that you make the wiring in such a way that a frost alarm is also trigger...

Страница 45: ...th INFO Display values Display Name Comments D1 D1 Indication of present digital signal at terminal D1 D2 D2 Indication of present digital signal at terminal D2 Path COMMIS TEST Wiring test Display Name Positions D1 D1 Indication of present digital signal at terminal D1 non adjustable D2 D2 Indication of present digital signal at terminal D2 non adjustable 45 174 Siemens Universal Controllers RLU2...

Страница 46: ... select whether the remote setpoint is an active signal DC 0 10 V or a passive signal 0 1000 Ω Active or passive Additionally you can set the input signal s range MIN VAL Lowest value at DC 0 V or 0 Ω MAX VAL Highest value at DC 10 V or 1000 Ω 7 4 4 Setpoints for basic type A The Comfort setpoints must always be entered Setpoints for Comfort The remote setpoint always acts on the heating setpoint ...

Страница 47: ...ting When you leave the commissioning menu the universal controller checks whether the setpoint adjuster is connected Connection errors If at that time the setpoint adjuster is connected but is missing later during operation or if there is a short circuit in the cable a sensor error message is delivered and presented on the display Xx setpoint adjuster missing Xx ooo short circuit If at that time ...

Страница 48: ... Path INFO Display values Display Name Comments Xx Xx Indication of present remote setpoint adjuster value at terminal Xx Path COMMIS TEST Wiring test Display Name Positions Xx Xx Indication of present remote setpoint adjuster value at terminal Xx non adjustable Display Name Effect Xx ooo Sensor error X Non urgent alarm plant not stopped Fault status messages 48 174 Siemens Universal Controllers R...

Страница 49: ...tpoint adjuster can only be activated for room temperature control basic type A and always acts on controller 1 7 5 3 Measuring range The setpoint adjuster s range must be 1000 1175 Ω 3 3 K 1000 1175 Ω 7 5 4 Setpoints The relative remote setpoint adjuster acts on the lower Comfort setpoint SET MIN and the upper Comfort setpoint SET MAX Setpoints for Comfort Therefore the dead zone Xdz between Seq1...

Страница 50: ...ift If you have activated more than one input as the relative remote setpoint adjuster the controller only accepts the first input Configuration errors 7 5 6 Settings Path COMMIS CONF X1 X5 Configuration Display Name Range comments LABEL Input identifier REL Path INFO Display values Display Name Comments Xx Xx Indication of present relative remote setpoint adjuster value at terminal Xx Path COMMIS...

Страница 51: ...isplay Name Range comments LABEL Input identifier OUTS Path PARA X1 Setting values PARA X5 Display Name Range Factory setting TYPE Type NI 2XNI T1 PT 0 10 NI MIN VAL Value low 50 500 50 MAX VAL Value high 50 500 250 CORR Correction 3 0 3 0 0 K Path INFO Display values Display Name Comments OUTS Outside temperature Path COMMIS TEST Wiring test Display Name Positions OUTS Outside temperature Indicat...

Страница 52: ...MIS CONF X1 Configuration COMMIS CONF X5 Display Name Range comments LABEL Input identifier ROOM Path PARA X1 X5 Setting values Display Name Range Factory setting TYPE Type NI 2XNI T1 PT 0 10 NI MIN VAL Value low 50 500 50 MAX VAL Value high 50 500 250 CORR Correction 3 0 3 0 0 K Path INFO Display values Display Name Comments ROOM Room temperature Path COMMIS TEST Wiring test Display Name Position...

Страница 53: ...F X1 Configuration COMMIS CONF X5 Display Name Range comments LABEL Input identifier SAT Path PARA X1 X5 Setting values Display Name Range Factory setting TYPE Type NI 2XNI T1 PT 0 10 NI MIN VAL Value low 50 500 50 MAX VAL Value high 50 500 250 CORR Correction 3 0 3 0 0 K Path INFO Display values Display Name Comments SAT Supply air temperature Path COMMIS TEST Wiring test Display Name Positions S...

Страница 54: ... type of controller the following pump control choices PUMP x are available Number Controller type Number of PUMP x RLU202 Max 2 RLU202 None RLU222 Max 2 RLU232 Max 2 RLU236 Max 3 For activation you must assign a switching output Qx to pump control PUMP x Activation 54 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Aggregates 29 08 2008 ...

Страница 55: ...mperature falls below the set limit value It switches the pump off again when the temperature has risen by 2 K above the limit value This function is available with every operating mode including Protection For the pumps a switch off delay DLY OFF can be set The switch off delay always acts on the switch off command for Switch off delay Pumps that are switched on according to load via the sequence...

Страница 56: ...tching on off The switch has the following positions Switch positions Off On 8 1 5 Priorities The following priorities apply to pump operation 4 priorities for pump operation 1 ON OFF during the wiring test 2 ON due to frost protection function pump on heat sequence 3 ON due to ON according to outside temperature 4 ON due to pump kick 5 ON depending on demand refer to sequence controller subsectio...

Страница 57: ...pendent OFF 0 100 0 ON OUTS Outside temp dependent ON 50 250 C 50 C DLY OFF Switch off delay 00 00 60 00 m s 00 00 KICK Kick period 0 200h 0 Path INFO Display values Display Name Comments PUMP 1 Pump 1 Indication of current state Off On PUMP 2 Pump 2 Indication of current state Off On PUMP 3 Pump 3 Indication of current state Off On Path COMMIS TEST Wiring test Display Name Positions PUMP 1 Pump 1...

Страница 58: ...ing pump on a multistage refrigeration machine Load dependent recooling pump 3101S30 V Q1 T X1 M Y1 Y X1 Y SIGNAL Y LABEL TEMP y p y p y p x x x DIFF x Q MAIN LIM SEQLIM SHIFT 1 CTLOOP 1 DV ALM SEQ2 Y SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P SEQ5 Y SEQ5 P Q1 p2 PUMP 1 PUMP 1 Y1 DO AO 1 y2 IN X x A0 AO 1 AI 58 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Aggregates 29 08 2008 ...

Страница 59: ...If one or more maximum 2 internal load signals and the external load signal are connected at the same time the controller uses maximum selection For example this provides for combination of the air cooling coil signal from an external dehumidification controller with that from a temperature controller The external signal is considered only if the controller operates in Comfort or Economy mode Note...

Страница 60: ...e OUTS If the outside temperature falls below the adjusted limit value ON OUTS the controller opens the analog output The analog output and thus the valve opening position in percent are set to the value entered in OPEN The analog output is deactivated and thus the valve fully closed when the outside temperature has exceeded the limit value by 2 K Notes The connected controller sequence can overri...

Страница 61: ... Adjustable values X1 X2 inputs with identifier only Path PARA AO 1 Setting values PARA AO 2 PARA AO 3 Display Name Range Factory setting MIN POS Positioning signal min 0 100 0 MAX POS Positioning signal max 0 100 100 INVERS Inversion NO YES NO ON OUTS Outside temp dependent ON 50 250 C 50 C OPEN Outside temp dependent open 0 100 0 Path INFO Display values Display Name Comments AO 1 Modulating out...

Страница 62: ...connect the load signal for HR from the sequence controller to the HR equipment Maximum selection in case of several load signals Additionally it is also possible to use an analog input IN X as the load signal If one or a maximum of 2 internal load signals plus an external load signal are connected at the same time the controller uses maximum selection This provides for combination of an external ...

Страница 63: ...tched off during operation input D1 Protection the output signal behaves as follows Output signal behavior TYPE ERC 0 i e DC 0 V TYPE DMP 0 i e DC 0 V 8 3 4 Limitations MIN POS MAX POS You can impose upper and lower limits on the modulating output Diagram In that case the 0 100 output signal corresponds to Minimum positioning signal MIN POS maximum positioning signal MAX POS 0 100 0 0 V 100 10 V M...

Страница 64: ...H input 2 The following 3 changeover possibilities are available 3 changeover possibilities Changeover from externally via a digital signal Changeover at an adjustable value Changeover at an adjustable difference between 2 measured values Special application examples Changeover from externally via a digital signal with air damper as first cooling sequence Changeover at an adjustable difference wit...

Страница 65: ...al position no inversion of HR output HREC Operated position inversion of HR output HREC When controlled via the cooling sequence Normal position inversion of HR output HREC Operated position no inversion of HR output HREC DI DIG 0 SETCOOL 0 CTLOOP 1 y1 y2 HREC HREC Changeover via an external actuating device digital input Application example 65 174 Siemens Universal Controllers RLU2 CE1P3101en Bu...

Страница 66: ...he cooling sequence When the set MECH limit value MECHSET is exceeded the output of the HR equipment HREC will no longer be inverted X3 OUTS 0 CTLOOP 1 y1 y2 HREC HREC OT MECH limit value OT MECH limit value Examples of changeover at an adjustable value Application examples Changeover at an outside temperature 25 C Changeover at an outside enthalpy 30 kJ kg Changeover via an external enthalpy diff...

Страница 67: ...R equipment HREC will be inverted When controlled via the cooling sequence When the set MECH difference MECHSET is exceeded the output of the HR equipment HREC will no longer be inverted X1 ROOM X2 OUTS 0 CTLOOP 1 y1 y2 HREC HREC HR Examples of changeover at an adjustable difference Application examples Changeover at a temperature difference of Outside temperature minus room temperature 3 K Change...

Страница 68: ...ital signal with air damper as first cooling sequence Function with TYPE DMP and control via the cooling sequence Normal position no inversion of air damper output HREC Operated position inversion of air damper output HREC DI DIG Y2 Y6 Y1 M M M SETCOOL CTLOOP 1 y1 y2 HREC HREC 68 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Aggregates 29 08 2008 ...

Страница 69: ... to MECH input 1 MECH 1 and MECH input 2 MECH 2 To do this assign the outside temperature to MECH input 1 and the room temperature to MECH input 2 Function with TYPE DMP and control via the cooling sequence When the set MECHU limit value MECHSET is exceeded the air damper output HREC will be inverted X2 OUTS X1 ROOM SETCOOL Y2 Y6 Y1 M M M CTLOOP 1 y1 y2 HREC HREC 69 174 Siemens Universal Controlle...

Страница 70: ...value 0 00 for Startup time Activation The purpose of the startup circuit is to prevent the air heating coils from freezing up by first opening the air damper with a certain delay then it opens steplessly Purpose If an outside temperature signal is available the startup circuit is active only when the outside temperature lies below 15 C At outside temperatures above 15 C the plant is started up wi...

Страница 71: ...Starting time Function diagram 71 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Aggregates 29 08 2008 ...

Страница 72: ...ling valve is given priority When the cooling valve is open the output signal of the HR equipment is set such that the air temperature after HR is as low as possible Solution The COOLER function is also available for mixing dampers Dehumidification and heating in a partial air conditioning system Example 3140S29de FO ZU AB AU Process without cooling valve setting Process with cooling valve setting...

Страница 73: ...MAX POS are also effective during the wiring test Note 8 3 10 Troubleshooting If the sensors for MECH are not available changeover does not occur Errors in operation If the second MECH input does not have the same unit as the first MECH input only the first input is used for changeover If no input or only the second input is configured changeover is deactivated Configuration errors 73 174 Siemens ...

Страница 74: ...N SBIN 3P Path PARA HREC Setting values Display Name Range Factory setting TYPE Type ERC DMP ERC MIN POS Positioning signal min 0 100 0 MAX POS Positioning signal max 0 100 100 MECHSET MECH limit value 3 K 20 C STUP TI Startup time 00 00 60 00 m s 00 00 m s MAT SP Mixed air temperature setpoint 50 C 250 C 12 C MAT XP Mixed air temp P band Xp 0 0 500 K 10 K MAT TN Mixed air temp int act time Tn 00 ...

Страница 75: ...u can also configure the available analog output AO with each step switch The same settings are possible as with the modulating output AO function block Accordingly a Y output can also be assigned 8 4 2 Operating principle With variable step switching you can set the digital outputs individually according to the load Load connection You can define the digital output s direction of action via the s...

Страница 76: ...the step switch The controller performs a maximum selection together with the internal signals Maximum selection in case of several preselections For example you can use this feature to implement the following function External control The RLU236 provides the step switch function only The external signal is considered only if the controloler is in Comfort or Economy mode Note 8 4 4 Output inversio...

Страница 77: ...ormal operation and the IN X external signal maximum selection 8 4 7 Settings Path COMMIS CONF STEP V1 Configuration COMMIS CONF STEP V2 Display Name Range comments STEP 1 Step 1 Activation of step switch and selection of the number of steps adjustable values Q1 Q2 free outputs only STEP 2 Step 2 Q1 Q2 free outputs only STEP 3 Step 3 Q1 Q2 free outputs only STEP 4 Step 4 Q1 Q2 free outputs only ST...

Страница 78: ...POS Positioning signal max 0 100 100 INVERS Inversion NO YES NO Note STEP V1 has a maximum of 2 steps Therefore the setting values for S3 ON to S6 OFF are not shown Path INFO Display values Display Name Comments STEP V1 Variable step switch 1 0 100 STEP x Variable step switch 1 step x ON OFF STEP V2 Variable step switch 2 0 100 STEP x Variable step switch 2 step x ON OFF Path COMMIS TEST Wiring te...

Страница 79: ...ar step switches are available Number Controller type Number of linear step switches RLU202 None RLU202 None RLU222 None RLU232 1 linear step switch with a maximum of 2 relay outputs 1 modulating output RLU236 1 linear step switch with a maximum of 6 relay outputs 1 modulating output To activate the linear step switch assign a relay Q to the STEP 1 output Activation 79 174 Siemens Universal Contro...

Страница 80: ...steps Load connection Load connection applies the following pattern 3101D18 Q 0 Y Q AO Q 0 Y Q 100 100 STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 1 AO STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 80 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Aggregates 29 08 2008 ...

Страница 81: ... enter a common startup delay time This delay makes the controller wait for the set time between the steps during startup Startup delay ON DLY With the linear step switch you can set a priority changeover of the outputs Run time priority changeover PRIO CH The priorities change at fixed intervals of roughly one week always after 7 x 24 168 hours Changeover is as follows example with 4 steps Week 1...

Страница 82: ...switch s analog output Meaning Definition and behavior INVERS NO 0 100 load 0 100 output INVERS YES 0 100 load 100 0 output The same settings are possible for this analog output as for the modulating output AO function block If the controller has a linear step switch and is switched off during operation input D1 Protection the output signal behaves as follows INVERS NO 0 output INVERS YES 100 outp...

Страница 83: ...EP 6 Step 6 Q1 Q2 free outputs only AO Modulating output Y1 Y2 free outputs only IN X Preselection external X1 X2 inputs with identifier only Path PARA STEPLIN Setting values Display Name Range Factory setting ON DLY Startup delay 00 00 10 00 m s 00 00 PRIO CH Run priority changeover NO YES NO OFFTIME Locking time 00 00 10 00 m s 00 00 MIN POS Positioning signal min 0 100 0 MAX POS Positioning sig...

Страница 84: ...EP 1 output Activation 8 6 2 Operating principle The binary step switch distributes the digital outputs with the number of load steps according to the following table over the total contact rating of the aggregate Load distribution demand calculation a If configured without the analog output Load distribution Configured outputs Relay 1 Relay 2 Relay 3 Relay 4 Number of load steps 0Y 2Q Q1 1 3 Q2 2...

Страница 85: ...00 100 AO STEP 1 STEP 2 Additionally you can enter a common locking time for the relay outputs This ensures that a step that has just switched off remains off for at least the set period of time Locking time OFFTIME If a relay output is locked all relays with less power will be energized for the duration if required by the sequence controller in order to prevent a total power drop off Application ...

Страница 86: ...e possible for this analog output as for the modulating output AO function block If the controller has a binary step switch and is switched off during operation input D1 Protection the output signal behaves as follows INVERS NO 0 output INVERS YES 100 output 8 6 5 Function check wiring test The step switch can be switched directly via the control switch during the wiring test Switching on off The ...

Страница 87: ... X2 inputs with identifier only Path PARA STEPBIN Setting values Display Name Range Factory setting OFFTIME Locking time 00 00 10 00 m s 00 00 MIN POS Positioning signal min 0 100 0 MAX POS Positioning signal max 0 100 100 INVERS Inversion NO YES NO Path INFO Display values Display Name Comments STEPBIN Binary step switch 0 100 STEP x Binary step switch step x ON OFF Path COMMIS TEST Wiring test D...

Страница 88: ...neutral conductor and install a wire link between N1 and N2 Note 8 7 2 Operating principle The controller uses the duration of the open and close commands and the entered actuator running time ACTTIME to calculate the actuator s present position stroke model This is compared with the present positioning setpoint If the result is a deviation the controller issues an open or close command Calculatio...

Страница 89: ...ommanded via the control switch Switching on off The switch has the following positions Switch positions Standstill Open OPEN Close CLOS When you enter the commissioning menu COMMIS the 3 position actuator travels to the 0 position CLOS Notes When you leave the COMMIS menu the controller does not compensate for any changes made to the 3 position output during the wiring test This does not take pla...

Страница 90: ...X2 inputs with identifier only Path PARA 3 POINT Setting values Display Name Range Factory setting ACTTIME Actuator running time 0 10 10 00 m s 2 00 m s Path INFO Display values Display Name Comments 3P 3 position 0 100 Path COMMIS TEST Wiring test Display Name Positions 3P 3 position OPEN CLOSE 90 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Aggregates 29 08 2008 ...

Страница 91: ... of controllers RLU202 Max 1 RLU202 Max 1 RLU222 Max 2 RLU232 Max 2 RLU236 Max 2 We distinguish between controller 1 and controller 2 Use Controller 1 is used for the following depending on the basic type selected for the device Basic type Use of controller 1 A Ventilation applications Room supply air temperature cascade controller Supply air temperature controller Room or extract air temperature ...

Страница 92: ...nctions can have an influence on setpoints Influence of functions Summer winter compensation Universal setpoint shift Remote setpoint absolute Remote setpoint relative The setpoint influences differ depending on the selected type of controller They are described in chapters 7 and 9 The following functions can have a limiting or activating influence on the heating or cooling sequences Frost protect...

Страница 93: ...None LIM 1 Any input Xx of the input block can be used Selection of an input identifier label requires that the respective temperature is indeed acquired e g ROOM Room temperature must be available 2 The connection is made as a setting value in controller 1 block 3 Setting value STRATGY has no impact in connection with room temperature and supply air temperature control In these cases the setting ...

Страница 94: ...e limited This function is made available in Comfort and Precomfort modes This setting can only be made with controller 1 in basic type A Using SETHLIM the cooling setpoint can be limited to a minimum value This means that this minimum value cannot be crossed neither by the relative setpoint adjuster the absolute setpoint adjuster summer winter compensation nor other functions The factory setting ...

Страница 95: ...limitation Plant will be shut down MAINALM Room temperature control without supply air temperature limitation 9 2 4 Configuration Path COMMIS CONF X1 X5 Controller 1 basic type A Display Name Adjustable values comments LABEL Input identifier Activation of room supply air temperature sensor Adjustable values ROOM SAT Path COMMIS CONF CTLOOP 1 Display Name Adjustable values comments CAS CON Casc con...

Страница 96: ...point Economy heating setpoint to Comfort cooling setpoint 21 C SETHEAT Economy heating setpoint 50 C to Comfort heating setpoint 19 C Path PARA CTLOOP 1 Display Name Range Factory setting SETCLIM Cooling setpoint limitation 50 0 250 C 0 C SETHLIM Heating setpoint limitation 50 0 250 C 250 C This setting can only be made on controller 1 in basic type A Note 96 174 Siemens Universal Controllers RLU...

Страница 97: ... menu the universal controller checks whether a room temperature sensor is connected Room temperature sensor present If at that time a room temperature value is available but is missing later a sensor error message is delivered and presented on the display Xx sensor missing or Xx ooo short circuit If at that time there is no room temperature value main controlled variable in this case the plant wi...

Страница 98: ...ntrol Note Cascade control CAS CON 0 Supply air temperature control CAS CON 1 for behavior refer to subsection 0 9 2 7 2 Operating principle The following diagram shows the operating principle of room supply air temperature cascade control Principle T T TSu TR w SpTSuC SpTSuH 3101S38 CTLOOP 1 PI PID The main controlled variable is the room temperature TR the auxiliary controlled variable is the su...

Страница 99: ... air temperature limitation SU MAX and SU MIN Absolute maximum and minimum limitation of the supply air temperature SU DMAX and SU DMIN Maximum and minimum temperature difference limitation between the actual value of the room temperature and the supply air temperature The following diagram illustrates the operating principle of the 2 supply air temperature limitations Function diagram SpSu t SU M...

Страница 100: ...controlled to the adjusted room temperature setpoints If at that time the measured value of the supply air temperature is missing the plant will be shut down MAINALM 9 2 7 4 Settings Path COMMIS CONF CTLOOP 1 Configuration Display Name Setting STRATGY Control strategy CAS Path PARA CTLOOP 1 Setting values Display Name Range Factory setting ROOM XP Room influence Xp 1 1000 K 10 K ROOM TN Room influ...

Страница 101: ...control Summer winter compensation Frost protection Fan release Y3 T F3 N X3 N Q1 M M3 N Q2 T N X4 B9 Cascade N X2 B5 T N Y1 N X1 B1 T N D1 S5 1 1 3101S29 M Y4 N Y2 Controller sequences Function diagrams Yctl 1 0 Y3 TSu SpTSuC 3101D14 SpTSuH M3 Y4 Preselected setpoints for supply air temperature control SU MAX SU MIN 3101D15 TR SETCOOL SETHEAT SpTSu Summer winter compensation TOa Sp 3101D16 101 17...

Страница 102: ...er checks whether a supply air temperature sensor is connected and then responds as follows Supply air temperature sensor present If at that time the supply air temperature sensor is present but is missing later the controller generates a sensor error message is delivered and presented on the display Xx sensor missing Xx ooo short circuit If there is no supply air temperature sensor main controlle...

Страница 103: ...general LIM If at the same time other influences act on the sequence controller the priority order according to subsection 9 1 4 Function priorities applies 9 2 9 3 Troubleshooting When you leave the commissioning menu the universal controller checks whether room and supply air temperature sensor are connected and then responds as follows Supply air and room temperature sensor present If at that t...

Страница 104: ...sor 35 C LIM MIN Gen limiter limit value low Input range limit sensor 16 C LIM DHI Gen limiter differential high 0 500 K 50 K LIM DLO Gen limiter differential low 0 500 K 50 K LIMCOOL Reduction min limitation cooling 0 10 K 0 K LIM XP Gen limiter P band Xp 0 500 K 15 K LIM TN Gen limiter integr action time Tn 00 00 60 00 m s 02 00 m s 104 174 Siemens Universal Controllers RLU2 CE1P3101en Building ...

Страница 105: ...ensor input Any analog input MAIN Differential control Any analog input main controlled variable Any analog input same unit as main controlled variable MAIN DIFF Control strategies controller 2 basic type A Or controllers 1 2 basic type U Explanations 1 Any input Xx of the input block can be used 2 The connection is made as a setting value in controller 1 or controller 2 block 9 3 2 Activation To ...

Страница 106: ... Control to absolute value no differential control When you leave the commissioning menu the universal controller checks whether a main sensor is connected Main sensor present If at that time the main sensor is connected but is missing later or if there is a short circuit in the cable a sensor error message is delivered and shown on the display Xx main sensor missing Xx ooo short circuit If at tha...

Страница 107: ...al control the variable to be controlled is the following Main controlled variable MAIN minus variable at the differential input DIFF Typical application examples of both control strategies Basic heating plant outside temperature dependent flow temperature control without room influence thermostatic radiator valves Differential pressure control The chilled ceiling s flow temperature is controlled ...

Страница 108: ...le Example of solar plant differential variable DO AI T T Y X1 Y SIGNAL Y LABEL TEMP y p y p y p x x DIFF x Q MAIN LIM SEQLIM SHIFT 1 CTLOOP 1 DV ALM SEQ2 Y SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P SEQ5 Y SEQ5 P p2 PUMP 1 PUMP 1 Y X2 Y SIGNAL Y LABEL TEMP y 3101S28 108 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Controller CTLOOP x 29 08 2008 ...

Страница 109: ...ut at the MODE function block Set the identifier of the main controlled variable MAIN to TEMP In that case the Changeover function always acts only on controller 1 and the activated sequences The universal controller comes standard with all sequences activated Note It is also possible to activate the Changeover function in basic type A Room temperature controller RLU2 A The respective controller i...

Страница 110: ...egate must be configured for heating and cooling sequences i e Note Heating sequence 1 and or sequence 2 and Cooling sequence 4 and or sequence 5 For more detailed information refer to section 9 5 Sequence controllers output assignments 9 4 3 Setpoints You can preselect individual setpoints for the Comfort and Economy modes Basic type U controller 1 We distinguish between the setpoints for Precont...

Страница 111: ... Economy heating setpoint Comfort cooling setpoint Comfort heating setpoint Comfort heating setpoint Economy heating setpoint Economy cooling setpoint Comfort cooling setpoint Refer to the corresponding setting values on the following page factory settings Economy setpoints are only adjustable if an input has been defined for operating mode changeover Note on Economy setpoints The following functi...

Страница 112: ...m Activation of heating cooling changeover contact Adjustable values X1 X2 digital values only Path PARA MODE Setting values Display Name Range Factory setting CO SEQ1 Change to sequence 1 YES NO YES CO SEQ2 Change to sequence 2 YES NO YES CO SEQ4 Change to sequence 4 YES NO YES CO SEQ5 Change to sequence 5 YES NO YES Path SET Factory setting Display Name Range Non changeover Changeover SETCOOL Ec...

Страница 113: ...type U Example 2 Individual room control with air heating air cooling coil basic type A This example corresponds to application RLU220 A09 from the programmed standard applications Diagram for example 2 individual room control X1 SAT X2 DIG X3 FRST CTLOOP 1 DI 113 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Controller CTLOOP x 29 08 2008 ...

Страница 114: ... 3 Seq 2 Seq 1 Seq 5 Seq 4 The SETHEAT heating setpoint is assigned to successive sequences 1 and 2 Their output signal acts in the opposite direction to the input variable T Explanations relating to the function diagram The SETCOOL cooling setpoint is assigned to successive sequences 4 and 5 Their output signal acts in the same direction as the input variable T Similar to the above statements the...

Страница 115: ...s within heating or cooling will be deactivated 9 5 5 Load outputs The following load outputs are available for the sequence controllers Available load outputs Modulating output Heat recovery Variable step switch Linear step switch Binary step switch 3 position output with RLU222 and RLU202 only Only one load output can be assigned to each sequence Load output rules However each load output can be...

Страница 116: ... y2 y x x x x x SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P 9 5 6 Pump outputs Only one pump can be assigned to each sequence However each pump can be controlled by up to 2 sequences Possibilities This example shows an air heating coil with a valve and pump Both are controlled by sequence 2 the pump is controlled via pump output SEQ2 P Application example Y1 DO Q1 AO p x x x x DIFF x Q MAIN LIM SEQLIM SHIFT 2 CTL...

Страница 117: ...tions for commissioning P band Xp of the controller Room and extract air control loops 1 2 K 2 4 r h supply air control loops 5 K 10 r h Set the integral action time Tn equal to the greatest time constant of the controlled system Set the derivative action time Tv equal to the time constant of the sensor Apply the following procedure if the control loop is hunting 1 Set Tn and Tv to 00 00 2 Increas...

Страница 118: ...re the plant will be shut down and a sensor error message Xx or Xx ooo delivered Errors in operation The major configuration errors and their consequences are the following Configuration errors The sequence controller only operates if a terminal with an analog value is assigned to its main controlled variable If individual sequences do not have outputs assigned to them they and all subsequent sequ...

Страница 119: ...LOOP 1 COMMIS CONF CTLOOP 2 Display Name Range comments SEQ4 Y Sequence 4 load modulating output 1 3 variable step switch 1 2 linear step switch binary step switch SEQ4 P Sequence 4 pump pump 1 3 Path COMMIS CONF CTLOOP 1 Display Name Range comments SEQ5 Y Sequence 5 load modulating output 1 3 variable step switch 1 2 linear step switch binary step switch SEQ5 P Sequence 5 pump pump 1 3 The config...

Страница 120: ...SEQ5 XP Sequence 5 _ Xp 0 500 K 30 K SEQ5 TN Sequence 5 _ Tn 00 00 60 00 m s 03 00 m s SEQ5 TV Sequence 5 _ Tv 00 00 60 00 m s 00 00 m s TIMEOUT Control timeout 00 00 60 00 m s 00 00 m s Path INFO Display values Display Name Comments _ Sequence 1 load output Indication of sequence controller s present output as 0 100 with a sequence diagram and controller icon _ Sequence 2 load output See comment ...

Страница 121: ...as shown in subsection 9 1 4 Function priorities 9 6 2 Operating principle If the controlled variable crosses one of the limit setpoints the limitation function with PI control LIM XP LIM TN overrides the normal control function to maintain the limit setpoint We distinguish between Limitation with PI control Absolute limitation Relative limitation If you only want one of these functions you can di...

Страница 122: ...refer to the temperature difference between the main controlled variable and the limit sensor You can enter one setpoint each for maximum and minimum differential temperature limitation Supply air temperature limitation for a displacement ventilation outlet Application example 1 5 m w w x x T T x w LIM DHI LIM DLO Limitation max Limitation min 3101S34en Acts an all sequences Not meaningful with ca...

Страница 123: ...ation of general limitation adjustable values X1 X2 nur analoge Werte nur Typ U Path COMMIS CONF CTLOOP 2 Display Name Range comments LIM General limit controller Activation of general limitation adjustable values X1 X2 analog values only Path PARA CTLOOP 1 Setting values PARA CTLOOP 2 Display Name Range Factory setting LIM MAX Gen limiter limit value high Limit sensor input range 35 C LIM MIN Gen...

Страница 124: ...mum or maximum limitation You can assign its action to one of the sequences Seq 1 Seq 2 Seq 5 General function 3101D03 x2 w2 CTL1 1 ymax x1 w1 Legend x2 Limit controlled variable w2 Limit setpoint min max ymax Limit signal always acting as a closing signal on 1 sequence Seq1 Seq2 Seq5 x1 Main controlled variable w1 Main setpoint CTL1 Controller 1 CTLOOP1 If the controlled variable drops below the ...

Страница 125: ...n level acting on sequence 1 Y3 Application example boiler M T T N X1 B1 Y3 N Q1 N Q2 N X2 B7 3101S36 If the controlled variable exceeds the limit setpoint SEQ SET the limit function with PI control SEQ XP SEQ TN overrides the normal control function to maintain the limit setpoint Maximum limitation Maximum limitation causes the sequence to close Maximum limitation of the return temperature TRL ac...

Страница 126: ...MIS CONF CTLOOP 1 Configuration COMMIS CONF CTLOOP 2 Display Name Range comments SEQLIM Sequence limit controller Activation of limitation of individual sequence adjustable values X1 X2 analog values only Path PARA CTLOOP 1 Setting values PARA CTLOOP 2 Display Name Range Factory setting SEQ MOD Type of limitation Min max Min SEQ SEL Sequence selection Seq1 Seq2 Seq4 Seq5 Seq1 SEQ SET Limit value I...

Страница 127: ...sequences at low outside temperatures This ensures that heating is deactivated in summer and cooling is deactivated in winter The switching differential is fixed at 2 K Summer and winter cases Summer Winter Seq 1 1 0 TA LOCK S1 1 0 TA 3101D12 Seq 4 LOCK S4 2 K 2 K 1 sequence enabled Explanation 0 sequence disabled If individual sequences are locked the controller continues its action with the othe...

Страница 128: ...setting LOCK S1 Sequence 1 outside temp 50 250 C 250 C LOCK S2 Sequence 2 outside temp 50 250 C 250 C LOCK S4 Sequence 4 outside temp 50 250 C 50 C LOCK S5 Sequence 5 outside temp 50 250 C 50 C 9 8 5 Application example Disabling a preheater on sequence 2 at temperatures above 10 C Preheater Function Valve fully closed pump off 128 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technol...

Страница 129: ...IN END Winter comp end point WIN STT Winter comp starting point SUM STT Summer comp starting point SUM END Summer comp end point OT Outside temperature w Setpoint Δw Setpoint shift Upward shift at low outside temperatures acts on heating and cooling Explanations for the diagram Downward shift at low outside temperatures acts on heating Upward shift at high outside temperatures acts on cooling Down...

Страница 130: ...ory setting SUM D Summer compensation delta 0 50 K 0 K SUM END Summer compensation end SUM STT 50 C 30 C SUM STT Summer compensation start WIN STT SUM END 20 C WIN STT Winter compensation start WIN END SUM STT 0 C WIN END Winter compensation end 50 C WIN STT 10 C WIN D Winter compensation delta 50 50 K 0 K 130 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Controller CTLOO...

Страница 131: ...Δw Setpoint shift Typical applications for universal setpoint shift are Application Refrigeration Shifting the flow temperature setpoint for the chilled ceiling according to room enthalpy or surface temperature Ventilation Shifting according to room humidity or surface temperature 9 10 3 Troubleshooting When you leave the commissioning menu the universal controller checks whether a sensor is conne...

Страница 132: ...ame Range Factory setting CMP2D Setp compensation 2 delta 50 500 K 0 K CMP2END Setp compensation 2 end CMP2STT 500 C 30 C CMP2STT Setp compensation 2 start CMP1STT CMP2END 20 C CMP1STT Setp compensation 1 start CMP1END CMP2STT 0 C CMP1END Setp compensation 1 end 50 C CMP1STT 10 C CMP1D Setp compensation 1 delta 50 500 K 0 K 132 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologie...

Страница 133: ...nitors the following values Monitored values Difference between actual value and setpoint Sequence controller at limit Message delay time If a control loop is operating at the limit all heating sequences fully open and all cooling sequences fully closed or vice versa and the set difference between actual value and setpoint is exceeded the controller triggers a fault status message after an adjusta...

Страница 134: ...ay time for the deviation message is longer than the timeout period If you fail to do so there will be a deviation message every time the timeout acts on the sequence controller 9 11 3 Settings Path COMMIS CONF CTLOOP 1 Configuration Display Name Range comments DV ALM Deviation message Activation of Deviation message function adjustable values Q1 Q2 relays only Path PARA CTLOOP 1 Setting values PA...

Страница 135: ... up if the valves are closed and the pipe is well insulated The upper message delay time DV DLYH is set to 6 h in this case to avoid unnecessary fault status messages Necessary delay time If the setpoint deviation is still present after 6 hours you can assume that the valves do not close properly Note 135 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Controller CTLOOP x 2...

Страница 136: ...e air side frost protection sensor with active signal DC 0 10 V 0 15 C NI 2 stage frost protection on the water side frost protection sensor with passive signal LG Ni1000 Note the following points with regard to planning and activation of the frost protection function Notes It must be possible to switch off the fans in case of frost hazard For that purpose the fan release relay ALM OFF can be conf...

Страница 137: ...ng actions The fan release relay is deenergized no release of fan The control loop configured with the air heating coil at risk from frost switches off all cooling sequences and opens all heating sequences to 100 It also switches on the air heating coil pump Important Step switches are also switched on in the process If 2 controllers are configured in the RLU2 the second other control loop is swit...

Страница 138: ...ing TYPE Identification DIG frost protection unit DIG ACK Fault acknowledgement Manual acknowledgement YES 3x automatic acknowledgement YES3 NO NO ACTING Control loop with risk of frost CTL1 CTL2 CTL1 Path INFO Display values Display Name Comments FROST Actual value frost protection Path COMMIS TEST Wiring test Display Name Positions FROST Actual value frost protection 138 174 Siemens Universal Co...

Страница 139: ...o prevent the temperature from falling below the frost hazard limit value SET ON If the temperature still drops below the above limit value the following actions are triggered Actions if temperature drops below limit value The fan release relay is deenergized no release of fan The control loop configured with the air heating coil at risk from frost switches off all cooling sequences and opens all ...

Страница 140: ...TFrst On Frost alarm SET ON Frost hazard limit value Legend TFrst Frost temperature Xp P band The frost protection function also remains active when the plant is off Note 140 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Frost protection FROST 29 08 2008 ...

Страница 141: ... side active DC 0 10 V 0 15 C DIG SET ON Risk of frost limit 50 50 C 5 C XP P band Xp 1 1000 K 5 K ACK Fault acknowledgement YES manual acknowlegement YES3 3x automatic acknowledgement NO NO ACTING Control loop with risk of frost CTL1 CTL2 CTL1 Path INFO Display values Display Name Comments FROST Actual value frost protection Path COMMIS TEST Wiring test Display Name Positions FROST Actual value f...

Страница 142: ... P band the heating sequences are steplessly opened and the cooling sequences are steplessly closed The purpose is to prevent the temperature from falling below the frost hazard limit value SET ON Temperature drops below starting point If the temperature still drops below the above limit value the following reactions are triggered Actions if temperature drops below limit value The fan release rela...

Страница 143: ...stable plant OFF frost protection SET OFF value with PI control OFF XP OFF TN so that the air heating coil already has stored heat on startup Behavior if the plant is off This function acts on all heating sequences of the configured control loop including step switches but The outside air damper remains closed refer to section 8 3 Heat recovery HREC 143 174 Siemens Universal Controllers RLU2 CE1P3...

Страница 144: ... 5 C XP P band Xp 1 1000 K 5 K SET OFF Plant OFF frost protection setp 50 50 C 20 C OFF XP Plant OFF Xp 1 1000 K 7 K OFF TN Plant OFF Tn 00 00 60 00 m s 00 30 m s ACK Fault acknowledgement YES manual acknowlegement YES3 3x automatic acknowledgement NO NO ACTING Control loop with risk of frost CTL1 CTL2 CTL1 Path INFO Display values Display Name Comments FROST Actual value frost protection Path COM...

Страница 145: ... alarm latch of its own you have to reset the frost alarm at the frost protection unit The plant will not restart until you have reset the frost alarm at the frost protection unit and acknowledged and reset it at the controller Note Apply the following procedure in case of a pending frost alarm Procedure for a pending frost alarm 1 Press the ESC button once acknowledges the fault 2 Press the ESC b...

Страница 146: ...ater G G G0 X M G0 F3a N 3101A17 AC 24 V You can connect an active temperature sensor with a DC 0 10 V 0 15 C signal to the input It must be connected according to the following diagram Connection diagram air G G G0 G0 N 3101A16 AC 24 V X M G1 F3b B M G F3 QAF63 2 frost protection unit with capillary air Legend for the connection diagrams F3a QAE2120 010 immersion temperature sensor water F3b QAM2...

Страница 147: ...ensor is interpreted as a frost alarm which activates the frost protection function 2 stage frost protection on the water side If there is no outside temperature signal the pump is permanently on Setting value On according to outside temperature must be set to 5 C refer to chapter 8 Pump PUMP x If more than one input is configured as a frost protection input the controller accepts the first config...

Страница 148: ...controller 2 Type Simple alarm 3 DV ALM 1 Deviation message sequence controller 1 _ Lower deviation _ Upper deviation Type Simple alarm 4 DV ALM 2 Deviation message sequence controller 2 _ Lower deviation _ Upper deviation Type Simple alarm 5 X1 ooo Sensor error X1 Type Simple alarm 6 X2 ooo Sensor error X2 Type Simple alarm 7 X3 ooo Sensor error X3 Type Simple alarm 8 X4 ooo Sensor error X4 Type ...

Страница 149: ...eviation message the controller delivers a fault status message When the main controlled variable returns to the optimal range the fault status message disappears automatically and the plant continues to operate normally This applies to all fault status messages that you have to acknowledge and reset Acknowledgement and reset extended alarm After acknowledgement the fault status message is maintai...

Страница 150: ...et Passive sensors signaling elements contact sensing Active sensors signaling elements Actuator DC 0 10 V 3101A18en Pump Terminal Intended for Xx M Passive sensors and signal sources potential free contacts contact sensing G1 Xx M Active sensors and signal sources G1 Yx M Actuators G and G0 AC 24 V system power supply Terminal assignment Only one solid or one stranded wire can be connected per te...

Страница 151: ...34 Q33 Q54 Q53 Q64 Q63 Q42 Q44 Q41 3101G04 RLU236 G G0 AC 24 V rated voltage Legend G1 AC 24 V power supply for active sensors signal sources or limiters M Measuring neutral for signal input G0 System neutral for signal output N X1 X6 Universal signal inpus for LG Ni1000 2x LG Ni1000 averaging T1 Pt1000 DC 0 10 V 0 1000 Ω setpoint 1000 1175 Ω relative setpoint potential free contacts contact sensi...

Страница 152: ...ing coil ACC Air cooling coil MECH Maximum economy changeover MECH P P control PI PI control Q Load output SpTSu Supply air temperature setpoint SpTSuH Supply air temperature setpoint heating SpTSuC Supply air temperature setpoint cooling t Time TA TOa Outside temperature OT Text Extract air temperature TFrst Frost temperature Tn Integral action time TR Room or extract air temperature tRL Return t...

Страница 153: ...mpensation 1 start CMP2D Setp compensation 2 delta CMP2END Setp compensation 2 end CMP2STT Setp compensation 2 start CNST Constant CO SEQ1 Change to sequence 1 CO SEQ2 Change to sequence 2 CO SEQ4 Change to sequence 4 CO SEQ5 Change to sequence 5 COMMIS Commissioning CONFIG Extra configuration COOL Cooling COOLER Cooling coil valve CORR Correction CTL1 Controller 1 CTL2 Controller 2 CTLOOP 1 Contr...

Страница 154: ...ax MAX VAL Value high MECH 1 MECH input 1 MECH 2 MECH input 2 MECHSET MECH limit value MIN Limitation min MIN Minimum MIN POS Positioning signal min MIN VAL Value low MODE Operating mode NI Passive Ni1000 NO No NO None NORMPOS Normal position OFF Off OFF TN Plant OFF Tn OFF XP P band Xp OFFTIME Locking time OFF Y Load dependent OFF OHM OK ON On ON DLY Startup delay ON OUTS Outside temp dependent O...

Страница 155: ...Sequence 1 pump SEQ1 TN Sequence 1 _ Tn SEQ1 TV Sequence 1 _ Tv SEQ1 XP Sequence 1 _ Xp SEQ1 Y Sequence 1 load SEQ2 Sequence 2 SEQ2 P Sequence 2 pump SEQ2 TN Sequence 2 _ Tn SEQ2 TV Sequence 2 _ Tv SEQ2 XP Sequence 2 _ Xp SEQ2 Y Sequence 2 load SEQ4 Sequence 4 SEQ4 P Sequence 4 pump SEQ4 TN Sequence 4 _ Tn SEQ4 TV Sequence 4 _ Tv SEQ4 XP Sequence 4 _ Xp SEQ4 Y Sequence 4 load SEQ5 Sequence 5 SEQ5 ...

Страница 156: ...on Plant stops STRATGY Control strategy STUP TI Startup time SU DMAX Max limitation supply air delta SU DMIN Min limitation supply air delta SU MAX Supply air limit value max SU MIN Supply air limit value min SUM D Summer compensation delta SUM END Summer compensation end SUM STT Summer compensation start SW VERS Software version TIMEOUT Control timeout TOOLING Operation locked TYPE Type TYPE Iden...

Страница 157: ...l outputs Q relay Y DC 0 10 V The following rules and properties apply to inputs Use of inputs Xx The input identifier can be a device or a special sensor Room temperature ROOM outside temperature OUTS frost protection FRST remote setpoint adjuster absolute REL or relative REL Multiple use of inputs is possible without limitation e g room temperature as the main controlled variable and as the maxi...

Страница 158: ... Y Relay Q to Q From the controller Load y to y pumps p to p The following applies to outputs Use of outputs Yx Connect the output functions to the respective terminals Each output terminal can only be used once e g Q1 for pump 1 Each output function has no more than 2 load signal inputs with maximum selection Example The air cooling coil valve opens if the room temperature or room air humidity is...

Страница 159: ...display with one decimal place Universal 0000 display with no decimal places The unit is only required for presentation on the display The controller presents all settings that depend on the unit e g P bands in the unit Sensor for TEMP Ni1000 2x LG Ni1000 averaging T1 Pt1000 DC 0 10 V all other units DC 0 10 V adjustable range Digital input for potential free contacts Special identifiers Room temp...

Страница 160: ...ed can be used as Room temperature actual value controller Controller functions Assignment of sequences can be configured a load output modulating output variable step switch linear step switch binary step switch and a pump can be connected Heating sequence S1 and S2 _ Cooling sequence S4 and S5 _ General limiter acts on all sequences Sequence limiter adjustable as min or max limiter acts on a set...

Страница 161: ...gnal from up to 2 sequences with maximum selection adjustable switching points outside temperature dependent ON adjustable Adjustable switch off delay Pump kick AO x modulating outputs Configuration Functions 1 y1 y2 IN X Y x A0 AO 1 Modulating output AO For modulating DC 0 10 V signals e g for fan control Load signal from sequence controller from up to 2 sequences with maximum selection Positioni...

Страница 162: ...trolling a multistage aggregate Linear distribution of the steps over the load signal range according to the number of outputs assigned External load signal can be applied Modulating output can be configured same function as modulating outputs AO x Locking time restart delay and startup delay time are adjustable time applies to all steps Weekly priority changeover of the steps STEB BIN binary step...

Страница 163: ...1 PUMP 2 STEP V1 3 POINT SEQ2 Y y p y p y p y p x x Q SEQLIM CAS CON SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P SEQ5 Y SEQ5 P DV ALM CTLOOP 1 CH OVER x y p y p y p y p x x x x DIFF x Q MAIN LIM SEQLIM SHIFT 1 SEQ2 Y SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P SEQ5 Y SEQ5 P DV ALM CTLOOP 1 U A de Stufenschalter LIN Stufenschalter BIN 1 Type A Type U CAS LIM 163 174 Siemens Universal Controllers RLU2 CE1P3101en Buil...

Страница 164: ...L Y SIGNAL Y LABEL LABEL SEQLIM CAS CON SEQ1 Y SEQ4 Y SEQ5 Y Y AO 2 Cooler LABEL CTLOOP 1 FROST AO 1 AO 2 HREC MECH 2 D1 x OPMODE MODE CH OVER x y y y y x x x x DIFF x MAIN LIM SEQLIM SHIFT 1 SEQ2 Y SEQ1 Y SEQ4 Y SEQ5 Y CTLOOP 1 U A de Stufenschalter LIN Stufenschalter BIN 1 CAS LIM Type A Type U x MAT 164 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Appendix 29 08 2008 ...

Страница 165: ...UMP 1 Q PUMP 2 Y AO 2 Cooler STEP 1 AO STEP 2 D1 y1 y2 IN X x Q2 Q x LABEL MODE 2 1 OPMODE Q1 Q2 OPEN CLOSE 3 P ALM OFF Q CTLOOP 1 FROST PUMP 1 PUMP 2 AO 1 AO 2 HREC MECH 2 STEP V1 3 POINT y p y p y p y p x x x x DIFF x Q MAIN LIM SEQLIM SHIFT 1 SEQ2 Y SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P SEQ5 Y SEQ5 P DV ALM CTLOOP 1 CH OVER x U A de 1 x x x x y p y p DIFF x MAIN LIM SEQLIM SHIFT 2 CTLOOP 2 SEQ1 Y ...

Страница 166: ...CAS CON LIM SEQLIM SHIFT PUMP 1 Q PUMP 2 Y A0 2 Cooler AO STEP 2 STEP 1 STEP 2 STEP 1 FROST D1 D2 1 2 PUMP 1 1 2 MODE LABEL Q CTLOOP 1 CTLOOP 2 SEQ2 Y SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P SEQ5 Y SEQ5 P DV ALM SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P PUMP 2 STEP 1 STEP 2 A0 STEP LIN A0 STEP V1 MECH 2 y p y p y p y p x x x x DIFF x Q MAIN LIM SEQLIM SHIFT 1 CH OVER x CTLOOP 1 SEQ2 Y SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ...

Страница 167: ... PUMP 1 Q PUMP 2 Q PUMP 3 Y A0 2 Cooler STEP 1 AO STEP 2 STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 AO STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 AO STEP 1 STEP 2 STEP 3 STEP 4 STEP 1 AO FROST D1 D2 LABEL 1 MODE 2 1 2 3 PUMP 1 PUMP 2 PUMP 3 AO 1 AO 2 AO 3 HREC MECH 1 MECH 2 STEP BIN STEP LIN STEP V2 STEP V1 CTLOOP 1 CTLOOP 2 SEQ2 Y SEQ2 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 P SEQ5 Y SEQ5 P SEQ1 Y SEQ1 P SEQ4 Y SEQ4 ...

Страница 168: ...urpose You want to convert the signal to DC 0 10 V 0 50 C at Y1 for further handling CONF X1 LABEL TEMP Configuration CONF X1 SIGNALY Y1 PARA X1 TYPE NI Setting values PARA X1 MIN VAL 0 C PARA X1 MAX VAL 50 C PARA X1 CORR 0 K 14 2 Signal inversion You want to invert a DC 0 10 V signal X1 to Y1 Purpose CONF X1 LABEL Configuration CONF X1 SIGNALY CONF AO 1 AO Y1 CONF AO 1 IN X X1 PARA D1 NORMPOS OPE...

Страница 169: ... PARA AO 1 INVERS NO 14 4 Step switch You want to convert a DC 0 10 V signal at X1 and an enable signal at D1 to a binary step switch signal with 2 steps at Q1 Q2 Purpose CONF X1 LABEL Configuration CONF X1 SIGNALY CONF STEPBIN STEP 1 Q1 CONF STEPBIN STEP2 Q2 CONF STEPBIN IN X X1 PARA D1 NORMPOS CLSD Setting values PARA STEPBIN OFFTIME 00 00 169 174 Siemens Universal Controllers RLU2 CE1P3101en Bu...

Страница 170: ...F STEP V1 STEP 1 Q1 CONF STEP V1 IN X X1 PARA D1 NORMPOS OPEN Setting values PARA X1 MIN VAL 0 PARA X1 MIN VAL 100 PARA STEP V1 OFFTIME 00 00 PARA STEP V1 S1 ON 28 PARA STEP V1 S1 OFF 25 14 6 Signal doubler You want to transmit a DC 0 10 V signal at X1 as an active output at Y1 Purpose CONF X1 LABEL Configuration CONF X1 SIGNALY Y1 170 174 Siemens Universal Controllers RLU2 CE1P3101en Building Tec...

Страница 171: ...171 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies Application examples 29 08 2008 ...

Страница 172: ...rinciple Fan release Fault acknowledgement Fault indication Fault list Fixed priority of cooling valve COOLER Frost protection FROST Description 2 stage frost protection examples Acknowledgement Connection diagrams Example of frost protection unit Implementation Room temperature control Room temperature control with supply air temperature limitation Room supply air temperature cascade controller S...

Страница 173: ... outputs Pump outputs Sequence controllers Output assignments Setpoint shift universal Settings general Step switch Variable STEP Vx Binary STEPBIN Linear STEPLIN Summer winter compensation Supply air temperature SAT Switching between operating levels Three position output 3 POINT Universal controller Description 105 Example of chilled ceiling Example of solar plant Wiring test ...

Страница 174: ...International Headquarters Gubelstrasse 22 CH 6301 Zug Tel 41 41 724 24 24 Fax 41 41 724 35 22 www siemens com sbt 2006 2008 Siemens Switzerland Ltd Subject to change 174 174 Siemens Universal Controllers RLU2 CE1P3101en Building Technologies 29 08 2008 ...

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