User Manual

4 / 16
Siemens PXC-NRUF – Automation station, compact series CM2N9760en_07
Building Technologies 2015-12-23
The device requires an external power supply AC/DC24V +/- 20%.
It must comply with SELV / PELV requirements!
The internal DC-DC converter supplies the internal processor system and
inputs/outputs with controller voltage.
DC15V /200mA is also provided for active sensors (Integral periphery). This
converter also establishes electrical isolation to the AC/DC24V power supply.
The device reset concept ensures defined conditions for field devices connected to
the I/Os during power-up, power-down and undervoltage.
Overvoltage protection and startup protection protect the automation station
against fluctuating power.
Design
The compact construction allows you to install the automation station in narrow
spaces and is particularly well suited for compact panels or for plants using
integrated panels.
Metal housing.
Front cover, can be opened.
LED displays.
Plug-in terminal blocks.
Terminal block can be plugged in to ease field device connection.
Existing Integral periphery can be plugged in at the same place as before.
Older Integral systems, where the terminal blocks do not fit:
Use the terminal blocks delivered with the PXC-NRUF.
Power supply
Terminal blocks
Note