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Siemens RDF300…/RDF340.../RDF400… Basic Documentation CE1P3076en
Building Technologies 6BEngineering 28 Aug 2008
6 Engineering
6.1 Connection terminals
LX1M
N
Q1 Q2 Q3
Y11 N
SELV
Y21
X2
L, N Operating voltage AC 230 V
Q1 Control output “Fan speed 1 AC 230 V”
Q2 Control output “Fan speed 2 AC 230 V”
Q3 Control output “Fan speed 3 AC 230 V”
Y11,Y21 Control output “Valve” AC 230 V (N.O., for
normally closed valves), output for
compressor or output for electrical heater
X1, X2 Multifunctional input for temperature
sensor (e.g. QAH11.1) or potential-free
switch
M Measuring neutral for sensor and switch
GX1M
G0
Q1 Q2 Q3
Y10 G0
SELV
Y20
X2
L
G, G0 Operating voltage controller AC 24 V
L Operating voltage for fan AC 230 V
Q1 Control output “Fan speed 1 AC 230 V”
Q2 Control output “Fan speed 2 AC 230 V”
Q3 Control output “Fan speed 3 AC 230 V”
Y10,Y20 Control output for 0…10 V actuator
X1, X2 Multifunctional input for temperature
sensor (e.g. QAH11.1) or switch
M Measuring neutral for sensor and switch
6.2 Connection diagrams
6.2.1 Water-based fan coil applications with
RDF300.../RDF400...
Application:
2-pipe fan coil units
L
N
10 A
L
N
Q1
Q2
Q3 Y11
Y21
AC 230 V
X1 M
X2
IIIIII
N1
M1
Y1
5(2)A
max.
5(2)A
max.
B2
S2
B1
S1
M1 3-speed fan
N1 Room temperature controller
RDF300.../RDF400...
Y1 Zone valve
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover
sensor, etc.)
Application:
2-pipe fan coil units
with electrical heater
L
N
10 A
L
N
Q1 Q2 Q3 Y11
Y21
AC 230 V
X1 M
X2
IIIIII
N1
M1
Y1 E1
5(2)A
max.
5(2)A
max.
5(2)A
max.
B2
S2
B1
S1
M1 3-speed fan
N1 Room temperature controller
RDF300.../RDF400...
Y1 Zone valve
E1 Electrical heater
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover
sensor, etc.)
RDF300…/RDF400…
RDF340…
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