• Mount the controller on a hard, even surface whenever possible in wall-mount applications.
• Use shims or washers to mount the controller securely and evenly on the mounting surface.
• Mount the controller in an area free of corrosive vapors and observe the Ambient Conditions
requirements. See Technical specifications.
• Provide for sufficient space around the controller for cable and wire connections for easy cover
removal and good ventilation through the controller (50 mm [2 in.] minimum on the top, bottom,
and front of the controller).
• Do not mount the controller on surfaces prone to vibration, such as duct work.
• Do not mount the controller in areas where electromagnetic emissions from other devices or
wiring can interfere with controller communication.
Observe these additional guidelines when mounting an FX-PCG controller in a panel or enclosure:
• Mount the controller so that the enclosure walls do not obstruct cover removal or ventilation
through the controller.
• Mount the controller so that the power transformer and other devices do not radiate excessive
heat to the controller.
• Do not install the controller in an airtight enclosure.
Figure 1: FX-PCG2621 mounting positions
DIN rail mount applications
Mounting the FX-PCGCH-PCG horizontal on 35 mm DIN rail is the preferred mounting method.
To mount a controller on 35 mm DIN rail:
1. Securely mount a 20 cm (8 in.) or longer section of 35 mm DIN rail horizontal and centered in
the appropriate location so that the controller mounts in the horizontal position. .
2. Pull the two bottom mounting clips outward from the controller to the extended position. See
Figure 1
3. Hang the controller on the DIN rail by the hooks at the top of the (DIN rail) channel on the back
of the controller, and position the controller snugly against the DIN rail. See on page .
4. Push the bottom mounting clips inward (up) to secure the controller on the DIN rail.
To remove the controller from the DIN rail, pull the bottom mounting clips out to the extended
position and carefully lift the controller off the DIN rail.
3FX-PCG26 General Purpose Programmable Controller Installation Instructions
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