System 450™ Series Control Module with Ethernet Communications Installation Instructions
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Note: If your System 450 control system uses a power module, the power module must be plugged into the
right side of the control module.
To direct-mount modules to walls and other flat surfaces using the four keyhole slots:
1. Plug the modules together, remove the module covers, place the module assembly horizontally against the
wall surface in a suitable location, and mark the mount hole locations on the mounting surface (Figure 1).
Note: The four keyhole slots on the communications control module are not accessible from the front (even
with the cover removed). Use another System 450 module to mark the communications module mounting hole
locations on the mounting surface.
2. Install appropriate screws or fasteners, leaving the screw heads approximately one to two turns away from
flush to the surface.
3. Position the assembly mounting slots over the screw heads, and then carefully tighten the mounting screws to
secure the assembly to the surface.
Notes:
• The mounting screws on a communications module cannot be accessed or tightened after the module is
attached to the screws. The enclosure has a ramp molded into the keyhole slots, which allows you to
mount the module on the screw heads.
• If you mount the modules on an uneven surface, use shims or washers to mount module assembly evenly
on the surface.
Refer to the input sensor installation instructions for information on locating and mounting control sensors.
Wiring
See Figure 2 and Table 1 for electrical termination locations and wiring information. See Technical Specifications
on page 52 for electrical ratings.
Risk of Electric Shock.
Disconnect or isolate all power supplies before making electrical connections. More than one disconnection or
isolation may be required to completely de-energize equipment. Contact with components carrying hazardous
voltage can cause electric shock and may result in severe personal injury or death.
Risque de décharge électrique.
Débrancher ou isoler toute alimentation avant de réaliser un branchement électrique. Plusieurs isolations et
débranchements sont peut-être nécessaires pour -couper entièrement l'alimentation de l'équipement. Tout contact
avec des composants conducteurs de tensions dangereuses risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
IMPORTANT: Use copper conductors only. Make all wiring in accordance with local, national, and regional
regulations.
IMPORTANT: Do not exceed the System 450 module electrical ratings. Exceeding module electrical ratings
can result in permanent damage to the modules and void any warranty.
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