Emerson E2 3 XR35CX, XR75CX, XEV22 Case Controllers, IPro DAC, Energy Meter, Overview

6.3.2Copeland Discus with CoreSense Diagnostics (ISD)

E2 controllers version 2.21F01 and above may com- municate with Copeland ISD compressors using the ECT MODBUS network. E2 controllers version 2.30F01 and above may use any of the RS485 I/O ports (COM2, COM4, or COM6) as a Copeland ISD communication port. Version 2.21F01 E2 units may only connect Cope- land ISD compressors to an RS485 Expansion Card.

The installation and operation manual explaining the Copeland ISD interface is maintained by Copeland. Con- tact your Copeland representative for a copy of this man- ual.

6.3.3XR35CX, XR75CX, and

XEV22 Case Controllers

E2 controllers version 2.84 or greater communicate with the XR and XEV controller. The XR and XEV con- trol compressor regulation, defrost, light, and evaporator fans in refrigeration systems on normal, low, or medium temperatures, control a wide variety of stepper electronic expansion valves and anti-sweat heaters (if present), and measure and regulate the superheat of the refrigerant in the system.

If the case controller is configured with a Real Time Clock (RTC), it can be programmed with up to 6 daily defrosts and an energy saving function. Without the RTC, the E2 can coordinate defrost cycles and the energy-saving function.

Several parameters of the Emerson controllers (such as inputs, outputs, setpoints, and alarms) can be configured directly in E2 and sent to the appropriate Emerson control- ler, depending on the controller model.

6.3.3.1XR75CX-Case Display

E2 controllers version 4.02 or greater communicate

with the XR75CX-Case Display controller. The XR75CX- Case Display is a microprocessor-based controller, suit- able for applications on medium or low temperature venti- lated refrigeration units. It has up to four (4) analog inputs: discharge air temperature, product temperature, defrost temperature and coil out temperature, four (4) relay out- puts, and up to two (2) digital inputs. For more informa- tion on the XR75CX-Case Display, refer to the XR75CX- Case Display manual P/N 026-1217.

6.3.4iPro DAC

Figure 6-4 - iPro DAC

The iPro DAC is a packaged HVAC control board for use either as a stand-alone controller or in zone control applications using a Emerson Retail Solutions E2 BX building control system. The iPro DAC is capable of con- trolling heat and cool stages, fans, humidification and dehumidification devices and economizers using on-board I/O and control algorithms, as well as monitor and interact with other building control systems and peripherals (such as smoke alarms and CO2 sensors).

6.3.5Energy Meter

Figure 6-5- Energy Meter

6.3.5.1Overview

The Energy Meter provides a solution for measuring energy data with a single device. Inputs include Control Power, CT, and 3-phase voltage. The Energy Meter sup- ports multiple output options, including solid state relay contacts, Modbus (with or without data logging), and pulse. The LCD screen on the faceplate allows instant out- put viewing.

MODBUS The RS485 Network and Hardware Setup • 6-7