Siemens RDG20 KN Series - Relay Functions

Connection
Application examples
6
170 | 186
A6V11545892_en--_e
6.4.2 Relay functions
2-pipe fan coil application, fan coil unit off during Protection mode.
Commissioning
Outputs used
● Fan P351 = 3
(or DIP6 = OFF)
● Valve P201 = 5
● Relay function P402 = 1
(Protection mode)
● M1 DC 0...10 V fan
● V1 DC valve
● L3
*)
Fan coil
● K Relay
*)
Release contact
See Technical data [➙ 177] for min. and
max. ratings
RDG26..KN
4-pipe fan coil application, pumps on during heating and cooling demand.
Commissioning
Outputs used
● Fan P351 = 3
(or DIP6 = OFF)
● Valve P201/P203 = 5
● Relay function P401 = 3
(heating pump)
● Relay function P402 = 4
(cooling pump)
● M1 DC 0...10 V fan
● V1, V2 DC valve
● L2
*)
Heating pump
● L3
*)
Cooling pump
● K Relay
*)
Release contact
See Technical data [➙ 177] for min. and
max. ratings
RDG26..KN
Example 1:
Switching off the fan coil
unit
Example 2:
Switching on pumps