Emerson E2 operation manual ESR8 Dis, Case Controller CC-100P shown

floor managers of alarms and notices. Other lights on the display show the ON/OFF status of refrigeration, defrost, and fans.

The EC-2 can be easily programmed using either the four front-panel buttons or an optional infrared remote control. For security, the buttons can be disabled to pre- vent tampering.

NOTE: There are several variations of the EC-2. Contact Retail Solutions at 1-800-829- 2724 for more information.

2.3.4CC-100 Case Controllers and CS-100 Case Circuit Controllers

ACC-100 case control board is a “smart” board capa- ble of controlling all functions for a single case, including lights, fans, defrost, anti-sweat, and suction side or liquid side valve control. CC-100s perform these functions inde- pendently from the E2 RX controllers, but it does rely on a parent E2 for logging, alarming, providing supplemental I/ O values, and coordinating defrost times among circuits.

There are four different models of the CC-100, each of which controls a different type of valve.

1.CC-100P(P/N 810-3160)—Case controller for liquid-side pulse valves (also called electronic expansion valves, or EEVs). This model is capa- ble of controlling up to two pulse valves simulta- neously (for use in dual-evaporator applications such as walk-in boxes).

2.CC-100LS(P/N 810-3170) — Case controller for liquid-side stepper valves (EEVs).

3.CS-100(P/N 810-3177) — Case circuit controller for suction-side stepper valves (also called elec- tronic evaporator pressure regulators, or EEPRs).

4.CC-100H(P/N 810-3171)—A special version of the CC-100 that is used by a particular manufac- turer. This board controls temperature in a case using suction-side stepper valves that regulate pressure in the evaporator.

The CC-100/CS-100 board is shown in Figure 2-20.

Figure 2-20- Case Controller (CC-100P shown)

2.3.5The ESR8 (Discontinued)

The ESR8 electronic suction regulator (P/N 810-3195)is an Echelon Network-based control board that controls up to eight separate electronic suction regulator (ESR) stepper valves. The ESR8 uses suction-side variable posi- tion ESRs to vary evaporator pressure and control temper- ature for an entire circuit. The ESR8 offers an economical, more efficient alternative to TXV control.

The board can be used with either Emerson Flow Con- trols ESR12 or ESR20 valves as well as a number of com- mercially available ESR stepper valves. Note that Emerson Flow Controls supplies both a 24 Volt and a 12 Volt version of the valve. The ESR board is only compati- ble with the 12 Volt version of the valve.

The board features two LEDs for each valve which indicate movement and direction. A status LED indicates the general status of the board.

The ESR8 board is shown in Figure 2-21.

2-12 • E2 RX/BX/CX I&O Manual 026-1610 Rev 13 14-SEP-2011