Installation Instructions

Document No. 553-168

November 03, 2017

Siemens Industry, Inc. Page 3 of 4

Figure 1. Front View of the PXC Compact Series (PXC-24 shown).

Option 1: Mounting the Controller on a DIN

Rail

NOTE: To provide a minimum clearance for wiring,

allow 6 inches (15 cm) from the center of the

DIN rail to obstructions on either side.

Installing the 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 the backplane of the enclosure.

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.

NOTE: For longer DIN rails, use one mounting screw

per running foot of DIN rail.

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.

4. Continue with Completing the Installation.

Option 2: Fastening the Controller with

Screws

NOTE: Allow a minimum clearance of 3 inches (7.6 cm)

around the controller ports and connectors for

terminating wires.

1. Select one of the following options for fastening the

controller:

 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 (see Figure 1).