Siemens RDU340 - 6 Engineering; 6.1 Connection terminals; 6.2 Connection diagrams

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Siemens RDU340… Basic Documentation CE1P3078en
Building Technologies Engineering 2014-11-03
6 Engineering
6.1 Connection terminals
G X1M
G0
Y21
Y10 G0
SELV
X2
L
G, G0 Operating voltage controller AC 24 V
L Operating voltage for electrical heater AC
230 V
Y21 Control output for electrical heater
Y10 Control output for DC 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
Application:
Single duct in
VAV/CAV
Heating or cooling
for universal or AHU
For US installations, use Class 2 rated power supplies.
For other installations, use circuit breakers with rated current of no more than 10 A.
N1 Room temperature controller RDU340...
V1 DC 0…10V actuator for heating or
cooling
S1 Operating mode switch-over contact
(e.g. key card)
B2 Heat/cool changeover sensor
Application:
Single duct with
electrical heater in
VAV/CAV
Heating and cooling
with electric heater
for universal or AHU
For US installations, use Class 2 rated power supplies.
For other installations, use circuit breakers with rated current of no more than 10 A.
N1 Room temperature controller RDU340...
V1 DC 0…10V actuator for heating or
cooling
E1 Electrical heater
S1 Operating mode switch-over contact
(e.g. key card)
B2 Heat/cool changeover sensor