Power supply |
Rated voltage | AC 230 V |
Overvoltage category | III | |
Frequency | 50/60 Hz | |
Power consumption | Max. 7VA / 3.7 W | |
Caution |
No internal fuse! External preliminary protection with max C 10 A circuit breaker required in all cases. |
|
Outputs | Fan control Q1, Q2, Q3-N Rating |
AC 230 V 5 mA…5(2) A |
Fans must NOT be connected in parallel! Connect one fan directly, for additional fans, one relay for each speed. |
||
Control output Y11-N / Y21-N (N.O.) Rating |
AC 230 V 5 mA…5(2) A |
|
Caution |
No internal fuse! External preliminary protection with max C 10 A circuit breakers in the supply line required in all cases. |
|
Inputs | Multifunctional input X1-M/X2-M **)
|
NTC (3 kΩ at 25 °C) 0...49 °C Max. 80 m Selectable (NO / NC) SELV DC 0...5 V / max 5 mA Max. 20 thermostats per switch 4 kV, reinforced insulation |
Function of inputs: **)
|
Selectable
|
|
Modbus | Interface type | RS485 Modbus RTU, Wire (ref.): 16 AWG, 1 pair, shielded serial line with 1.5 mm2 and length < 1200 m |
Bus current | Max. 50 mA | |
Modbus topology: See Modbus manual (MODBUS over serial line specification and implementation guide from http://www.modbus.org ). |
||
Operational data | Switching differential, adjustable
|
2 K (0.5...6 K) 1 K (0.5...6 K) |
Setpoint setting and range
|
21 °C (5...40 °C) 15 °C/30 °C (OFF, 5...40 °C) 8 °C/OFF (OFF, 5...40 °C) |
|
Multifunctional input X1/X2 **) Input X1 default value (P38) Input X2 default value (P40) |
Selectable 0...8 3 (Op. Mode switchover) 1 (External temp. sensor) |
|
Built-in room temperature sensor
|
0…49 °C < ± 0.5 K ± 3.0 K |
|
Settings and display resolution
|
0.5 °C 0.5 °C |
|
Environmental conditions | Storage
|
As per IEC 60721-3-1 Class 1K3 |
Transport
|
As per IEC 60721-3-2 Class 2K3 |
|
Operation
|
As per IEC 60721-3-3 Class 3K5 1) |
|
Standards and directives | EU Conformity (CE) | CE1T3079xx *) |
RCM | A5W90002895 *) | |
Electronic control type Home and Building Electronic Systems |
2.B (micro-disconnection on operation) EN 50090-2-2 |
|
Safety class | II as per EN 60730 | |
Pollution class | Normal | |
Housing flammability class according to UL94 | V-0 | |
Degree of protection of housing | IP 30 as per EN 60529 | |
Environmental compatibility | The product environmental declaration CE1E3079en (RDF302) *), A5W00085839A (RDF302/VB) *), A6V11610192 (RDF302.B) *) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal). | |
General | Connection terminals | Solid wires or prepared stranded wires 1 x 0.4…1.5 mm2 |
Housing front color | RAL 9003 white RAL 9004 black |
|
Weight without / with packaging | 0.174 kg/0.261 kg |
*) The documents can be downloaded from http://siemens.com/bt/download.
**) RDF302.B does not have inputs X1 and X2. Parameters related to X1 and X2 input functions are not applicable to RDF302.B.
1) No condensation is allowed.
Index
1
1-speed fan 35
3
3-position control signal 32
3-speed fan 35
A
Applications overview 16
Automatic heating / cooling changeover 20, 23
Automatic heating / cooling changeover via bus 20
B
Basic application 29
C
Changeover switch 20
Chilled / heated ceiling applications 29
Clean fan filter reminder 36
Compressor applications 16, 29
Control outputs configuration 33
Control outputs overview 32
Control parameters 47
Control sequences 23
Cooling sequence 23
D
Dew point monitoring 22, 38
Disposal 54
E
Electric heater 25
Enable / disable electric heater 25, 38
Expert level parameters 47
External / return air temperature 37
External / return air temperature sensor 21
F
Fan kick function 35
Fan minimum on-time 35
Fan operation as per heating / cooling mode, or disabled 35
Fan operation in dead zone 35
Fan overrun 36
Fan start 35
Fault 38
Fault on KNX 40
Fault, handling 39
Floor cooling 21
Floor heating 21
Floor temperature limitation function 21
H
Heating / cooling changeover 20, 37
Heating and cooling sequence 23
Heating sequence 23
I
Integral action time 10
K
Key lock 22
M
Main and secondary 27
Manual heating / cooling changeover 20
Manually select heating or cooling sequence 23
Minimum output 21
Moisture 21
Mounting and installation 51
Multifunctional inputs 37
O
ON/OFF control signal 32
Operating mode
Priority intervention 12
Operating mode button 12
Operating mode switchover 38
P
Parameter setting 47
Proportional band 10
Protection mode / Standby 11
Purge function 21
R
Radiator applications 29
Remote heating / cooling changeover 20
Reset parameters 47
S
Setpoint Comfort mode 30
Setpoint Economy mode 30
Setpoint limitation 13
Setpoint Protection mode 30
Setpoints and sequences 30
Standby / Protection mode 11
Switching differential 10
Synchronization 33
T
Temperature out of range 39
Temporary setpoint 13
U
Universal applications 16
W
Window contact 13
Window state 11, 38
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© Siemens Switzerland Ltd, 2011 (-2022) |