Siemens RDG20 KN Series - Connection; Connection Terminals

Connection
Connection terminals
6
A6V11545892_en--_e
161 | 186
6 Connection
6.1 Connection terminals
RDG20..
RDG20..KN (AC 230 V / AC 24 V)
RDG20..T (AC 230 V)
L, N
Operating voltage AC 230 V / AC 24 V
X1, X2, X3
Multifunctional input for temperature sensor (NTC 3k or LG-
Ni1000) or potential-free switch (function can be selected via
parameter)
U1
Selectable input/output function:
● Multifunctional input for temperature sensor (NTC 3k or
LG-Ni1000) or potential-free switch (function can be
selected via parameter)
● Multifunctional output DC 0…10 V for fresh air damper
M
Measuring neutral for sensors and switches
CE+, CE-
KNX Bus + and – terminals
Q1
Control output for fan speed I AC 230 V / AC 24 V
Q2
Control output for fan speed II AC 230 V / AC 24 V
Q3
Control output for fan speed III AC 230 V / AC 24 V
Q1…Q3
Also for special functions AC 230 V / AC 24 V
Y1…Y4
Control outputs "Valve" AC 230 V or AC 24 V (Normally open
triac, for normally closed valves), output for electric heater
via external relay
Y50
Control output "Fan" DC 0…10 V