User Manual

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Siemens PXC-NRUF – Automation station, compact series CM2N9760en_07
Building Technologies 2015-12-23
Equipment combinations
Various options exist to operating automation stations PXC-NRUF:
• Room device QAX... on the PPS2 interface. Up to a maximum of five room
devices QAX... (without QAX5...) can be connected. Details on PPS2
communication are described in the Desigo Technical principles manual
(Section "I/O blocks", subsection "PPS2 addressing").
• Local operator unit PXM10 *), is connected with cable PXA-C1.
• Operator unit PXM20 *), is connecting with cable PXA-C1, for local operation or
for decentralized operation of an entire plant connected within a BACnet /
LonTalk network.
*) Only one operator unit can be connected (PXM10 or PXM 20).
The following web controllers support remote monitoring and operation using a
standard Internet browser:
PXC...-E.D with PXA40-W1 or PXA40-W2.
Technical design
Universal inputs (UI 1 ... 16)can be used for active sensor elements as well as
potential-free contracts for signaling functions.
Digital inputs (DI 1 … 8) allow non-potential-free reporting functions.
They are electrically isolated from the system and from one another.
Digital inputs (DI 9 … 16) allow reporting functions (potential-free).
Digital inputs (DI 17 … 24) allow reporting and counting functions (potential-free).
Universal outputs (UO 1 … 8) can, on the one hand, control modulating
actuators, on the other hand, they can be programmed for binary switching
functions via the program structure.
Relay outputs (DO 1 … 16) are designed for switching functions up to a maximum
of AC/DC 42 V, 2 A.
Operation
Note
Web operation
Inputs
Outputs