G
X1
M
X2
G0
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Siemens
Building Technologies
6
Engineering
6.1
Connection terminals
D1
GND
SELV
RDG400 Basic Documentation
Engineering
G, G0
Operating voltage AC 24 V
Y10/G0 Control output for DC 0...10 V actuator
Y1/G, Y2/G Control output for 2-position, PWM or 3-position actuators
X1, X2
Multifunctional input for temperature sensor (e.g. QAH11.1)
or potential-free switch
Factory setting:
- X1 = external room temperature sensor
- X2 = sensor or switch for automatic heating / cooling
changeover
Change of setting: Parameters P38, P40
M
Measuring neutral for sensor and switch
D1, GND Multifunctional input for potential-free switch.
Factory setting: Operating mode switchover contact
Change of setting: Parameter P42
CE1P3182en
19 Jun 2009