Data Sheet for Product

Page 2 of 6 Siemens Industry, Inc.
PXC UEC-16
The PXC UEC-16 provides control for 16 points,
including 8 software-configurable universal points.
Point count includes: 3 Universal Input (UI), 5
Universal I/O (U), 2 Digital Input (DI), 3 Analog Output
(AOV), and 3 Digital Output (DO).
PXC UEC-24
The PXC UEC-24 provides control for 24 points,
including 16 software-configurable universal points.
Point count includes: 3 Universal Input (UI), 9
Universal I/O (U), 4 Super Universal I/O (X), 3 Analog
Output (AOV), 5 Digital Output (DO).
Extended Temperature Operation
The PXC Compact UEC "R" models support extended
temperature operation, allowing for rooftop
installations.
Hardware
The PXC Compact Series consists of the following
major components:
l Input/Output Points
l Power Supply
l Controller Processor
Input/Output Points
l The PXC Compact input/output points perform
A/D or D/A conversion, signal processing, point
command output, and communication with the
controller processor. The terminal blocks are
removable for easy termination of field wiring.
l The Universal and Super Universal points
leverage TX-I/O™ Technology from Siemens
Building Technologies to configure an extensive
variety of point types.
l Universal Input (UI) and Universal Input/Output
(U) points are software-selectable to be:
– 0-10V input
– 4-20 mA input
– Digital Input
– Pulse Accumulator inputs
– 1K Ni RTD @ 32°F (Siemens, Johnson
Controls, DIN Standard)
– 1K Pt RTD (375 or 385 alpha) @ 32°F
– 10K NTC Thermistor (Type 2 and Type 3) @
77°F
– 100K NTC Thermistor (Type 2) @ 77°F
– 0-10V Analog Output (Universal Input/Output
(U) points only)
l Super Universal (X) points are software-
selectable to be:
– 0-10V input
– 4-20 mA input
– Digital Input
– Pulse Accumulator inputs
– 1K Ni RTD @ 32°F (Siemens, Johnson
Controls, DIN Standard)
– 1K Pt RTD (375 or 385 alpha) @ 32°F
– 10K NTC Thermistor (Type 2 and Type 3) @
77°F
– 100K NTC Thermistor (Type 2) @ 77°F
– 0-10V Analog Output
– 4-20 mA Analog Output
– Digital Output (using external relay)
l Digital Output (DO) points are 110/220V 4 Amp
(resistive) Form C relays; LEDs indicate the status
of each point.
l All PXC Compact Series models support 0-10 Vdc
Analog Output circuits.
l The Super Universal points may be defined as
either 0-10 Vdc or 4-20 mA Analog Output
circuits.
Power Supply
l The 24 volt DC power supply provides regulated
power to the input/output points and active
sensors. The power supply is internal to the PXC
Compact housing, eliminating the need for
external power supply and simplifying installation
and troubleshooting.
l The power supply works with the processor to
ensure smooth power up and power down
sequences for the equipment controlled by the I/O
points, even through brownout conditions.
Controller Processor
l The Unitary Equipment Controller includes a
microprocessor-based multi-tasking platform for
program execution and communications with the
I/O points and with other UECs and field panels.