Siemens PXC Compact Series Installation Instructions

Document No. 553-504
Installation Instructions
October 9, 2019
Siemens Industry Inc. Page 3 of 5
Installation
WARNING:
Turn OFF AC
power at the circuit breaker
panel.
CAUTION:
UL Listings require that NEC Class I and
Class II wiring be kept separate from each
other. Use separate conduit and cable tie
bars to separate Class I Digital Output (DO)
wires from all other Class II wiring.
Securely fasten the PXC Compact so that it
does not come loose when point connectors
are removed.
If you need to reinsert one of the mounting
tabs, see the PXC Compact Series Owner’s
Manual (553-104) for instructions.
The PXC Compact may be mounted either vertically
(with 24 Vac and DOs on the right) or horizontally (with
24 Vac and DOs at the top).
Options for Mounting the Compact Series
Select one of the following options for installation:
• Mount the controller on a DIN rail by using the
four slide-out mounting tabs.
• Fasten the controller to a surface or enclosure
backplane with screws.
Option 1: Mounting the Compact Series on
a DIN Rail
Installing the DIN Rail
NOTES:
Allow a minimum clearance of 3 inches (7.6
cm) around
the field panel ports and
connectors for terminatin
g wires.
For longer DIN rails, use one mounting screw
per runni
ng foot of DIN rail.
Do the following if the DIN rail is not already installed:
1. Align and level the DIN rail on the mounting surface
or enclosure backplane.
2. Mark the position of the mounting holes at either
end of the DIN rail.
3. Using wall anchors, if necessary, attach the DIN rail
to the surface or the backplane.
Installing the PXC Compact
1. Slide out the mounting tabs.
2. Align the channel on the back of the device with the
DIN rail.
3. Using a flat-blade screwdriver, push in each
mounting tab until it clips onto the DIN rail.
• Continue with Completing the Installation.
Option 2: Fastening the Controller with
Screws
NOTE:
Allow a minimum clearance
of 3 inches (7.6
cm) aro
und the field panel ports and
con
nectors for terminating wires.
1. Select one of the following options for fastening the
PXC Compact:
• Drive screws through the four slide-out
mounting tabs.
• Drive screws through the two mounting holes in
the controller cover and through two mounting
tabs at the opposite corners.
2. Slide out the required mounting tabs.
NOTE:
• For installation on an enclosure backplane,
use the 3/8” self-tapping screws and, if
necessary, the 1-3/4” self-drilling screws.
• For mounting on a surface, use the 3/4”
self-drilling screws and, if necessary, the 1-
3/4” self-drilling screws.
3. Align the PXC Compact on the mounting surface
and mark the position of the mounting holes.
4. For installation in an enclosure, align the mounting
holes of the PXC Compact with holes in the
perforated backplane. See the Figure Dimensions
for Installation.
5. Using wall anchors if necessary, secure the
controller using the provided screws.
6. Continue with Completing the Installation.

Siemens PXC Compact Series Specifications

General

Brand	Siemens
Model	PXC Compact Series
Category	Control Unit
Language	English