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2-12 • E2 RX/BX/CX I&O Manual 026-1610 Rev 13 14-SEP-2011
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.
2.3.4 CC-100 Case Controllers and
CS-100 Case Circuit Controllers
A CC-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.
2.3.5 The 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.
NOTE: There are several variations of the
EC-2. Contact Retail Solutions at 1-800-829-
2724 for more information.
Figure 2-20 - Case Controller (CC-100P shown)