User Manual

2 / 14
Siemens RXM39.1 - PL-Link I/O Block CM2N3836en_06
Building Technologies 2016-05-19
Use
The RXM39.1 PL-Link I/O Block allows control of a single fancoil unit by a PXC3
room automation station via the KNX PL-Link peripheral bus. It is optimized for
fancoil installation and control in terms of housing, connection terminals and I/O
mix.
The KNX PL-Link (PeripheraL-Link) is a two-wire bus system optimized for
communication between peripheral devices (sensors, actors) and the modular
PXC3 room automation stations in the domains or HVAC, lighting and shading.
Functions
The application on the room automation station determines the device functionality.
Type overview and ordering
The device is supplied without terminal covers.
Terminal covers (RXZ30.1) can be ordered optionally.
Equipment combinations
• The RXM39.1 PL-Link I/O Block only works together with PXC3 series room
automation stations.
• LG-Ni 1000 temperature sensors can be connected.
• DC 0...10 V actors from Siemens or third party can be connected.
• Signaling inputs relay outputs etc. see pages 10, 11.
Technical design
The RXM39.1 PL-Link I/O Block consists of a terminal base, upper part of housing,
and circuit board with plug-in connection terminals on the side. In addition, the
device offers a tool connection, a service LED and button.
Plug-
in connection
terminals
Upper housing section
Plug-
in connection
terminals
80048
Lugs for cable strain relief
Plug-in connection terminal
for KNX PL-Link bus
Housing base
Service LED
Service button
Tool connection
Product number
Stock number
Name
RXM39.1
S55376-C105
PL-Link I/O Block
Note