Wiring System 450 Components - Johnson Controls Penn System 450 Series Technical Bulletin

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).
2. Install appropriate screws or fasteners, leaving the screw heads approximately
one to two turns away from flush to the mounting 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.
Note: If you mount the modules on an uneven surface, use shims or washers
to mount module assembly evenly on the surface.
Refer to the sensor installation instructions referenced in Related Documentation
on page 5 for information on locating and mounting System 450 compatible
sensors.

Wiring System 450 Components

When wiring your System 450 control system, observe the following guidelines
and see Figure 15, Figure 16, and Table 6 for wiring terminal locations and
designations. See Technical Specifications on page 67 for the electrical ratings for
System 450 modules used to build System 450 standard control systems.
WARNING: Risk of Electric Shock.
!
Disconnect or isolate all power supplies before making electrical
connections. More than one disconnect 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.
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.
IMPORTANT: Run all low-voltage wiring and cables separate from all high-
voltage wiring. Shielded cable is strongly recommended for input (sensor) and
analog output cables that are exposed to high electromagnetic or radio frequency
noise.
IMPORTANT: Electrostatic discharge can damage System 450 modules. Use
proper Electrostatic Discharge (ESD) precautions during installation and
servicing to avoid damaging System 450 modules.
System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 37