CAUTION
Risk of Property Damage:
Do not apply power to the system before checking
all wiring connections. Short circuited or improperly
connected wires may result in permanent damage to
the equipment.
ATTENTION
Mise En Garde: Risque de dégâts matériels:
Ne pas mettre le système sous tension avant
d'avoir vérifié tous les raccords de câblage. Des
fils formant un court-circuit ou connectés de façon
incorrecte risquent d'endommager irrémédiablement
l'équipement.
Important: Do not exceed the controller electrical
ratings. Exceeding controller electrical ratings can
result in permanent damage to the controller and
void any warranty.
Important: Use copper conductors only. Make
all wiring in accordance with local, national, and
regional regulations.
Important: Electrostatic discharge can damage
controller components. Use proper electrostatic
discharge precautions during installation, setup, and
servicing to avoid damaging the controller.
For information on configuring and wiring a BACnet/
SC or BACnet/IP network, refer to the Facility Explorer
IP Networks for BACnet/IP Controllers Configuration Guide
(LIT-12012980). For detailed information about configuring
and wiring an MS/TP Bus, FC Bus, and SA Bus, refer
to the FX MS/TP Communications Bus Technical Bulletin
(LIT-12011670).. For detailed information about wiring an
N2 network, refer to the N2 Communications Bus Technical
Bulletin (LIT-636018).
Terminal blocks and bus ports
See Physical features for terminal block and bus port
locations on the CGM/CGE controller. Observe the
following guidelines when wiring a CGM/CGE controller.
Input and Output terminal blocks
CG series controllers have removable input and output
terminal blocks. All of the input terminal blocks are
located on the bottom of the controller, and the output
terminal blocks are located on the top of the controller.
For information about removing a terminal block, see
Removing a terminal block. For more information about
I/O terminal functions, requirements, and ratings,
see Terminal wiring guidelines, functions, ratings, and
requirements.
BACnet/SC or BACnet/IP Ethernet Network
Topology for CGE controllers
CGE controllers may be connected to a BACnet/SC or
BACnet/IP building automation network in multiple ways:
as daisy-chained devices, as part of a star (also called
home run) type network, or as part of a ring network.
To daisy-chain CGE controllers, connect the controllers
to the bus supervisor in a chain with the Ethernet cable
connecting to the CGE at the ETH-1 or ETH-2 port, and
connecting to the next device from the other port.
Benefits of daisy-chained networks are that they require
less physical wiring and new devices can be added easily
to the network.
In a star network, each CGE controller is connected
by Ethernet cable directly back to a main switch. This
configuration reduces the possibility of network failure
but requires more wiring to install.
A ring network is a chain of controllers virtually closed
by a software component in an Ethernet switch. Not
all switches support the ring topology. The dual-port
controller from Johnson Controls supports Media
Redundancy Protocol (MRP). With MRP, a ring of Ethernet
devices can overcome any single communication failure,
with a recovery time faster than a non-ring (daisy chain or
star) architecture.
For more information on network topologies for IP
Controllers, see Facility Explorer IP Networks for BACnet/IP
Controllers Configuration Guide (LIT-12012980).
FC Bus terminal block on CGM controllers
The FC Bus terminal block is a blue, removable, 4-pin
terminal block that fits into a board-mounted pin header.
When connecting the CGM to the FC Bus, wire the bus
terminal blocks on the controller and other FC Bus devices
in a daisy-chain configuration using 3-wire twisted,
shielded cable as shown in Figure 6. For more information
about FC Bus terminal functions, requirements, and
ratings, see Table 5.
Figure 6: FC Bus terminal block wiring
Note: The FC Bus Shield (SHD) terminal is isolated
and can be used to connect (daisy chain) the shields
for FC Bus wiring.
F4-CG Series General Purpose Application Controllers Installation Guide 5
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