Siemens RDG400 - Manual (Page 35)

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Siemens RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation CE1P3182en
Building Technologies Engineering 28 May 2009
6 Engineering
6.1 Connection terminals
G X1 M X2 D1 GND
G0
SELV
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
M Measuring neutral for sensor and switch
D1, GND Multifunctional input for potential-free switch.
Factory setting: Operating mode switchover contact