Siemens RDF510.2 User manual

CB1N3064en
24.08.2010
BuildingTechnologies
for2-pipe fancoil units; foruse with compressors inDXtype equipment
•Outputfor on/offvalve actuator,3-wire on/off valve actuator or 1-stage
compressor
•3-speed fan control: Automatic or manual
•Manualheating/cooling changeover or continuous Cooling onlyor
Heatingonly
•Operatingmodes: Comfort, Protection
•Adjustablecommissioning and controlparameters
•Optionaldisplay of roomtemperature orsetpoint
•Minimum andmaximum setpoint limitation
•Display temperature in incrementsof0.5 Cor 1 F
•Operating voltage: AC 230 V
•Mounting on recessed rectangular conduitbox withfixing centre 60.3 mm

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Siemens Semi-flush-mountRoom Thermostatswith LCDCB1N3064en
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Use
For controllingthe room temperature in individual rooms and zonesthatare:
•heatedorcooled with 2-pipe fan coil units
•cooledwith a single compressorin DX type equipment
The controllercontrols:
•a3-speed fan
•eithera valve actuator in a2-pipe system,or
•a3-wire ball valve actuator in a 2-pipe system, or
•a1-stage compressor in DXtype equipment
Suitable foruse in systems with:
•continuous heating orcooling mode
•manualheating/cooling changeover
Functions
•Changeover between heating andcooling mode is manually
•Maintenance ofroomtemperature withintegrated temperature sensor
•Selection ofoperatingmode with the operatingmode button on the controller
•3-speed fan control (automatic or manual)
•Outputfor 2-position (on/off) valve actuator, 3-wire (on/off) valve actuator or 1-
stage compressor
•Buttonlock (automatic ormanual)
Controller
The controlleracquires the room temperature via its built-in sensor and maintains
the setpoint by delivering 2-position valve control commands orcompressor output
commands.
The switching differential is1 K inheating mode and1 Kin cooling mode (adjust-
ablevia parameters P08 and P09).
The display can show currentroomtemperature or the setpointadjusted by user.
This can be selected via parameterP18 (factory setting is the currentroom tem-
perature).
The heating and cooling symbols on the display show the status of thefan
coil.This means thatthe symbols are also shown while the controller operates in
the dead zone.
Ifrequired, room temperature and setpoint can also be displayedin Fin place of
C by changing parameter P17.
Operating modes
The following operating modesare available:
In Comfort mode,the controller maintains the setpoint,which can be adjusted via
the + and –buttons.The fan can be setto automatic ormanual fan speed:Low,
mediumor high.
The setpointsetting range can be limited to a minimum(P05)and maximum (P06).
This helps preventthe waste of energy,thus saving costs.
Whenthe controlleris in Protection mode , the relevant setpoints of heating or
coolingare maintained.These setpoints can be adjusted via control parameters
P03 and P04. Factory setting ofP03 is 8 C; whereas P04 is OFF, which means
thatthe controlleris notactivatedwhen in Protection mode.
To avoid damage due to moisture in very warmandhumid climatic zones resulting
from lack of aircirculation in normal operation (Comfortmode ),the fan can be
Temperaturecontrol
Display
Comfort Mode
Tips
ProtectionMode
Avoiding damage
duetomoisture

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kept running all the time (e.g.in apartments orshops during unoccupied periods),
whensetting parameter P21 “ONindead zone”. In this case, the fan keeps running
at minimum fan speed 1.
Controlsequences
Usedin conjunction with a valve,eitherforheating/cooling with changeover, heat-
ing only or cooling only.
Usedin conjunction with a 1-stage compressor for cooling only orheating only.
Heatingmode Cooling mode
T[ C] Room temperature SDHSwitchingdifferential “Heating”
WRoom temperature setpoint SDCSwitchingdifferential “Cooling”
Y11 Control output “Valve”or “Compressor”
The valve orcompressor receives OPEN command via control outputY11 when:
•the acquired room temperature lies by half the switching differential belowthe
setpoint(heatingmode)or above the setpoint(cooling mode),and
•control outputY11 was not energized formore than 1 minute (the “Minimum
output off time”is a fix value)
The valve orcompressor receives CLOSE command via control output Y11 when:
•the acquired room temperature lies by half the switching differential above the
setpoint(heatingmode)or below thesetpoint(cooling mode),and
•control outputY11 was energized formore than 1 minute (the “Minimumoutput
on time”is a fix value)
Control output Y12 deliversa control command which is inverted to the control
command atoutputY11 and which can be used foropen valves normally.
When pressing the Heat/Cool mode selector,thecontroller will change from heat-
ing to cooling, or vice versa.
Ifthe controller is set to “Cooling only”or “Heating only”,changeover will notbe
possible. Onlythe corresponding mode can be selected by the Heat/Coolmode
selector (parameterP22, factory settingis “manual changeover”).
The minimum outputon/off time ofY11 and Y12fixed at 1 minute. Itmeans that
any readjustment of the setpoint or ofHeat/Cool mode changeoverwill be hold for
1 minute before Y11and Y12react.
Fan operation
The fan operates either inautomatic mode or at the selected speed when using
manual mode.In automatic mode,the fan speed depends on the setpoint andthe
currentroom temperature. Whenthe roomtemperature reaches the setpoint,the
control valve will close andthe faneitherremains in fan speed 1 or switches off
(parameterP21, factory setting:ONin deadzone).
In “Temperature-dependent”fan control the fan switches off(seediagram below).
The individual switching differentials ofthe fan speed 1 (Q1 only) can be adjusted
Water-based fan coil
application
Compressor based
application
ON
OFF
Notes:
Heat/Cool mode
Minimumoutput
on/offtime Y11,Y12

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via control parameters P08 andP09.The individual switching differentials of the
fan speed 2 and 3 (Q2 and Q3) are fixed at 1 K.
Heating mode Coolingmode
W
SDH
SDHSDH2SDH3
Valve
Fan
W
SDC
SDC3SDC2SDC
Valve
Fan
Y11Y11
Temp
Temp
Temp
Temp
Q3
Q2
Q1
Q3
Q2
Q1
3058D03
Ifdesired,fan control can be set to “Temperature-independent”,which means that
ventilation is alwayson, even withinthe dead zone,using at leastfan speed 1.This
can be selected individually for normal operation (Comfort mode ) using parame-
terP21. Please also refer to “Avoiding damage due to moisture”.
In automatic mode, a dwelling time of 2 minutes (factory setting) is active. Thefan
maintains that speed for atleast 2 minutes before itswitches to the nextspeed.
This dwelling time can be adjusted from 1…5 minutes using parameterP14.
Whenever the fan starts fromstandstill,it starts with speed 3 for 1 second in order
to guarantee a safe fan motor starts (to overcome inertia and friction).
Error handling
Whenthe room temperature is outofthemeasuringrange, which means above 49
C or below 0 C, the display shows the limiting temperature in flashing figures (“0
C”or “49 C”).
Ifthe current setpoint isnot OFF(seeparameters P03)and the controlleris in
heating mode, whenthe temperature isbelow0 C,outputY11 will be energized.
In all other cases, outputY11 will be de-energized until the temperature returns to
the measuringrange, and then the controller will resume Normal operation (Com-
fortmode ).
Controlparameters
A number ofcontrol parameters can be readjusted to optimize the control perform-
ance. These parameters can also be setduring operation withoutopening the unit.
In the event of a power failure,all control parameter settings will be maintained.
The parameters canbe changed as follows:
1. Set the controller to Protection mode .
2. Press buttons +and –simultaneously for 3 seconds. Release them and, within
2seconds, press button + again for 3 seconds.Then,the display will show
“P03”.
3. Select the required parameterby repeatedly pressing buttons+ and –:
Ventilation
alwayson
Dwelling time
Fanstart
Temperatureout
ofrange
Parameter settings

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4. By pressing buttons + and –simultaneously,the currentvalue of the selected
parameterappears, which can be changed byrepeatedly pressing buttons +
or –.
5. By pressing buttons + and –simultaneously again,the nextparameterwill be
display.Or,5 secondsafter the lastpress of the button, the lastparameterwill
be displayedagain.
6. Ifyou wish to display and changeadditional parameters, repeat steps 3
through 5.
7. Otherwise, press +or –until “End”is displayed, and then press +and –simul-
taneously tosave the change andexitparameterentry mode.
The factory setting of the control parameters canbe reloaded asfollows:
1. Set the controller to Protection mode .
2. Press buttons+ and –simultaneously for3 seconds. Release them and, within
2 seconds, press Fan mode button twice.
3. Then, the display will show “888”during the reloading process.
Para-
meter
Meaning Settingrange Factory
setting
P03
Setpoint of heating in Protection
Mode (WheatStb) OFF, 5 C…WcoolStb 8 C
P04
Setpoint of cooling in Protection
Mode (WcoolStb) OFF, WheatStb…40 C OFF
P05
Minimumsetpointlimitation in
ComfortMode(WminComf) 5 C…WmaxComf 5 C
P06
Maximum setpoint limitation in
ComfortMode(WmaxComf) WminComf…40 C 35 C
P07 Sensorcalibration -3…3K 0 K
P08
Switching differentialheating mode
(SDH) 0.5…4 K 1K
P09
Switching differentialcooling mode
(SDC) 0.5…4 K 1K
P14 Dwelling time of auto fan speeds1…5mins 2 min
P17 Selection of C or F Cor F C
P18 Displayof temperature or setpoint
OFF: Setpoint
ON: Room(or return air)
temperature ON
P21
Fan control in Normal operation
(Comfortmode) OFF indead zone ON in dead zone ON
P22 Heat/Coolmode 0: Heating only 1: Cooling only
3: Manual H/C changover
3: Manual
P26
Buttonlock
(Pressing 7 secondson the oper-
ating mode button,the buttons will
be locked or unlocked respec-
tively)
0: Disabled
1: Auto lock
2: Manual lock
0:Disabled
Parameter reset
Controlparameterlist

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Equipment combinations
Type ofunit Type
reference Data Sheet
Electromotoric on/offvalveandactuator
MVI421..
MXI421.. N4867
Electromotoric actuator (for zone valves) SFA21/18
SFA21.. N4863 N4863AP
Thermal actuator (for radiator valves,small
valves and zone valves) STA21... N4877
Thermal actuator (for terminal unit valves) STP21... N4878
Electric actuator (forzone valves)* SUA…N4832
Conduit box forsemi-flush-mount thermostat
ARG71
S55770-T137
N3009
*Only availablein AP, UAE, SA and IN.
Ordering
Whenordering, please indicate the product name,product number and SSNnum-
ber:
Room Thermostat, RDF510.2, S55770-T189
Valves and actuators shouldbe orderedseparately.
Example:

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Siemens Semi-flush-mountRoomThermostatswith LCDCB1N3064en
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Mechanical design
The controller consists of 2parts:
•Front panel which comprised bythe electronics, the operating elements and the
built-in roomtemperature sensor
•Mounting base with the power electronics
The rearofthe mounting base containsthe screw terminals which fit on a rectan-
gularconduit box with fixing centres 60.3 mm.The frontpanel engages in the
mounting base and snaps on.
Display of theroomtemperature, setpoints and control parameters
②Symbol used when displaying the current roomtemperature
③Fan mode and fan speed indicator
Automatic fan active
Manual fan active
④Fan mode button
−changing the fan mode (Auto/manual)
−changing the fan speed (Low/Medium/High)
⑤Heat/Cool mode selector
−For thechangeoverbetween cooling mode andheating mode ifP22 =3
Or:Operating mode button
−Fortheselection of comfortmode andprotection mode
Or:Button lock
−Press and hold for 7seconds, to lockedand unlocked the buttons manually
⑥Buttonsfor adjusting the setpointsand control parameters
⑦Mode indicator
Heat/Cool Mode indicator:
Cooling mode active
Heating mode active
Operating Mode indicator:
Comfortmode active
Protection mode active
Setting andoperat-
ing elements
Legend:
2
4
5
6
1
3
7

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Mounting andinstallation
The room controllercan be mounted ona recessed rectangularconduit box with
fixing centres of60.3 mm.The mounting location on a wall should notbe in niches
or bookshelves,notbehind curtains, above or near heatsources and wind outletor
inlet, and not exposed to direct solar radiation. Mounting heightis about 1.5 m
above the floor.
You can also referto the Mounting Instructions M3064 enclosed with the controller.
•Wiring, fuse and earthing must be installed in compliance with local regulations.
•The cables to the controller, fan and valves carry AC230 Vmains voltage and
mustbeappropriate sized.
•Only valves rated forAC 230 V may beused.
•The AC 230 Vmains supply line must have an external fuse or circuitbreaker
with a rated currentofno more than 10A.
•Nometal conduits.
•Nocables providedwith a metal sheath.
•Disconnectfrom supply before openingthe cover.
After applying power, the controller makes aresetduring which all LCDsegments
displayed, indicating that the resethas been correctly made. This takes about 3
seconds. Then, the controller is ready for commissioning by qualified HVAC staff.
The control parameters ofthecontroller can be set to ensure optimum performance
of the entire system(please referto “ParameterSettings”).
•Depending onthe application, the Heat/Cool mode must be setvia parameter
P22.Factory setting is “Manual Heat/Cool changeover”.Whenusingin “Cooling
only”or “Heating only”,P22 mustbe setaccordingly.
•Ifthe roomtemperature displayed by the controller does notaccordwith the
roomtemperature effectively measured,the temperature sensor can berecali-
brated.In thatcase,parameter P07 mustbe changed.
•For comfort and energy savingreasons,itis suggested to reviewthe setpoints
and setpointranges (parameters P03…P06) and,if necessary,tochangethem
accordingly
Disposal
The device is classified as waste electronic equipment in terms ofthe European
Directive 2002/96/EC(WEEE) and should not be disposed of as unsorted munici-
pal waste.
Adhere to all relevant national laws.
Regarding disposal, use the systems setup forcollecting electronic waste.
Observe all local and applicablelaws.
Wiring
Commissioning
Heat/Cool mode
Calibrating sensor
Setpointand range
limitation

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Siemens Semi-flush-mountRoomThermostatswith LCDCB1N3064en
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Technicaldata
Operating voltage AC 230V+10/-15%
Frequency 50/60 Hz
Powerconsumption Max. 4VA
Fan control Q1, Q2, Q3-N
Rating AC 230V Max. 4(2) A
Control outputY11-N(N.O.) /Y12-N (N.C.)
Rating AC 230V Max. 4(2) A
Switching differential, adjustable from 0.5...4 K
Heatingmode (factory setting)
Cooling mode (factorysetting)
2K
1K
Setpoint setting range
Normal operation (Comfortmode)
Protection mode
5...40 C
OFF, 5...40 C
Factory setting ofsetpoints
Normal operation (Comfortmode)
Protection heating mode
Protection cooling mode
20 C
8 C
OFF
Built-in roomtemperature sensor
Measuring range
Accuracy at 25 C
Temperaturecalibration range
0…49 C
<±0.5 K
±3K
Resolution of settings and display
Setpoints
Current temperature value displayed
0.5 C
0.5 C
Operation
Climatic conditions
Temperature
Humidity
to IEC721-3-3
class 3K5
0...50 C
<95% r.h.
Transport
Climatic conditions
Temperature
Humidity
Mechanical conditions
to IEC721-3-2
class 2K3
-25...60 C
<95 % r.h.
class 2M2
Storage
Climatic conditions
Temperature
Humidity
to IEC721-3-1
class 1K3
-25...60 C
<95 % r.h.
conformity to
EMC directive
Lowvoltage directive
2004/108/EC
2006/95/EC
N474 C-Tick conformity to
EMC emission standard AS/NSZ 61000.6.3:2007
Reduction of hazardous substances 2002/95/EC
Powersupply
Outputs
Operational data
Environmental
conditions
Norms and standards

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Siemens Semi-flush-mountRoom Thermostatswith LCDCB1N3064en
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Productstandards
Automatic electrical controls for household
and similar use
Special requirements fortemperature-
dependent controls
Electronic control type
EN 60730 –1
EN 60730 –2-9
2.B (micro-disconnection on
operation)
Electromagnetic compatibility
Emissions
Immunity
IEC/EN61 000-6-3
IEC/EN61 000-6-1
Devices of safety class IIas perEN 60 730
Pollution class normal
Degree ofprotection of housing IP 30 as per EN60529
Connection terminals solid wires orprepared
stranded wires
2x 0.4-1.5 mm2or1 x0.4-
2.5 mm2
Weight 0.17 kg
Color ofhousing front white,RAL9003
Connection terminals
L, NOperating voltage AC 230 V
Q1 Control output “Fanspeed 1”AC 230 V
Q2 Control output “Fanspeed 2”AC 230 V
Q3 Control output “Fanspeed 3”AC 230 V
Y11 Control output “Valve”AC230V(N.O.)
or output for compressor
Y12 Control output “Valve”AC230V(N.C.)
Connection diagrams
Application: 2-pipe fan coil unit
AC 230 V
M13-speed fan
N1RDF510.2
Y1 Zone Valve
Application: Compressor in DX type equipment
AC 230 V
M13-speed fan
N1RDF510.2
C1Compressor
General

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Siemens Semi-flush-mountRoomThermostatswith LCDCB1N3064en
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Dimensions

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Siemens Semi-flush-mountRoom Thermostatswith LCDCB1N3064en
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
20
10
Siemens Schweiz AG
Subject to change