Data Sheet for Product

Technical Specification Sheet
Document No. 149-454
May 20, 2020
1
Siemens Industry, Inc. 149-454
Smart Infrastructure 2020-05-20
PXC Compact Series
Figure 1. PXC Compact Series Controllers
(PXC-24 and PXC-36 shown.)
The PXC Compact Series (Programmable Controller–
Compact) is a high-performance Direct Digital Control
(DDC) supervisory equipment controller, which is an
integral part of the APOGEE® Automation System.
The PXC Compact Series offers integrated I/O based
on state-of-the-art TX-I/O™ Technology, which
provides superior flexibility of point and signal types,
and makes it an optimal solution for Air Handling Unit
(AHU) control. The PXC Compact operates stand-
alone or networked to perform complex control,
monitoring, and energy management functions without
relying on a higher-level processor.
The PXC Compact Series communicates with other
field panels or workstations on a peer-to-peer
Automation Level Network (ALN), or on the Field Level
Network (FLN), and supports the following
communication options:
● Ethernet/IP ALN
● RS-485 P2
The PXC Compact is available with 16, 24, or 36 point
terminations. Selected models in the Compact Series
provide the following options:
● Support for P1 FLN devices.
● Support for MS/TP or P1 FLN devices.
● An extended temperature range for the control of
rooftop devices.
● Support for Island Bus, which uses TX-I/O
modules to expand the number of point
terminations for high-speed loop control. For PXC-
36 only.
Features
● DIN rail mounted device with removable terminal
blocks simplifies installation and servicing.
● Proven program sequences to match equipment
control applications.
● Built-in energy management applications and DDC
programs for complete facility management.
● Comprehensive alarm management, historical
data trend collection, operator control, and
monitoring functions.
● Sophisticated Adaptive Control, a closed loop
control algorithm that auto-adjusts to compensate
for load/seasonal changes (License required with
Firmware revision 2.8.18 and higher).
● Message control for terminals, printers, pagers,
and workstations.
● Highly configurable I/O using Siemens state-of-
the-art TX-I/O™ Technology.
● HMI RS-232 port, which provides laptop
connectivity for local operation and engineering.
● Extended battery backup of Real Time Clock.
● Persistent database backup and restore within the
controller.