User Manual

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Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_12
Building Technologies 2015-12-23
Ordering
When ordering please specify the quantity, product name, type code and application.
The controllers are delivered with the basic application 00020, 00021 or 00022, respec-
tively.
The RXZ20.1 terminal covers are supplied in packs of 1 pair and must be ordered sep-
arately.
Example:
30 RXC20.5 room controllers RXC20.5/00020
30 Pairs of terminal covers RXZ20.1
Compatibility
The QAX… room units and the Siemens field devices can be used with the RXC20,
RXC21 and RXC22 room controllers.
For details, refer to the RX hardware overview, CA2N3804.
Design
The RXC20, RXC21 and RXC22 room controllers consist of a housing base, a housing
cover and the printed circuit board with connection terminals. The controller also has a
tool socket, a service LED and a service pin.
Plug-in Connection terminals
Housing cover
Plug-in Connection terminals
70198
Cable restraints
Plug-in
connection terminals
for L
ONWORKS® bus
Housing base
Service LED
Service pin
Tool socket
Terminal covers (RXZ20.1) are available as an option, to protect the connection termi-
nals from physical contact and dirt. The service LED remains visible when the terminal
covers are in place, and the service pin can be operated with a pointed implement. The
cable is connected to the room controller by breaking out the perforated cable entry
guide.
Fehler! Es ist nicht möglich, durch die Bearbeitung von Feldfunktionen Objekte
zu erstellen.
Removing the terminal cover
Terminal cover
Label
(example RXC22.5)