Emerson operation manual E2 Echelon Lonworks Network, Interconnection With Other E2s

1.4.2The E2 Echelon Lonworks Network

The E2 is also compatible with a network platform called Lonworks. This is most commonly referred to as “the Echelon Network,” after the company who invented the platform, the Echelon Corporation.

In general, peripherals with control functions — such as case controllers, rooftop HVAC controllers, and other E2 RX and BX units — are interconnected on the Echelon Network. These controllers do most of their own computa- tion and system control, but they communicate with other E2s to provide logging, alarm control, and other functions. In addition to these, Emerson Retail Solutions also offers Echelon-compatible input and output boards similar to those available for the RS485 Network.

E2 RX E2

MultiFlex	C	S-100	MultiFlex
I/O			I/O
	CS-100
	CC-100		MultiFlex
MultiFlex
I/O			I/O
	CC-100
	CC-100		MultiFlex
MultiFlex
I/O			I/O
MultiFlex			MultiFlex
I/O
			I/O

E2 RX & BX

ECHELON NETWORKS

Figure 1-3- E2 RX Echelon Network Diagram

Figure 1-3shows the E2 RX peripherals that commu- nicate across the Echelon Network:

•CC-100 - Case control board - controls all lights, fans, defrost, and refrigeration for a single case. The CC-100 controls pulse or stepper valves to provide precise evaporator control, resulting in better tem- perature maintenance and energy efficiency.

•ESR8 - Evaporator stepper regulator - the analog outputs on this board allow the E2 to control circuit temperature in up to eight circuits using suction-

side mounted electronic evaporator pressure regula- tors (EEPRs).

•TD3 - Temperature display - has three inputs that monitor case temperature, product temperature and defrost status.

•Third Party Echelon Devices - Echelon® LON- MARK® devices communicate with E2 through its “Open Echelon” networking feature, and require a license key and a description file that is loaded into the E2 that enables communication.

1.4.3Interconnection With Other

E2s

In large installations where more than one refrigeration

system is present, or where E2s are controlling both refrig- eration and building HVAC systems in the same site, the E2s share information with each other across either the Echelon Network or via Ethernet.

Echelon Box-To-Box

ECHELON CABLE (daisy chain)

Ethernet Box-To-Box

CAT5 CABLE

Switch

Figure 1-4- E2 RX/BX Network

Networking Overview Introduction • 1-5