Emerson Complete Guide to Freezer Management and FSD 11.4.8 Insights

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 Retail Solutions E2 BX building con- trol system. The iPro DAC is capable of controlling 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.

The meter is housed in a plastic enclosure suitable for

installation on T35 DIN rail according to EN50022. The Energy Meter can be mounted with any orientation over the entire ambient temperature range, either on a DIN rail or in a panel. The meter is not sensitive to CT orientation to reduce installation errors.

6.3.5.2Supported System Types

The Energy Meter Series has a number of different possible system wiring configurations. To configure the meter, set the System Type via the User Interface or Mod- bus register 130 (if so equipped). The System Type tells the meter which of its current and voltage inputs are valid, which are to be ignored, and if neutral is connected. Set- ting the correct System Type prevents unwanted energy accumulation on unused inputs, selects the formula to cal- culate the Theoretical Maximum System Power, and deter- mines which phase loss algorithm is to be used. The phase loss algorithm is configured as a percent of the Line-to- Line System Voltage (except when in System Type 10) and also calculates the expected Line to Neutral voltages for system types that have Neutral (12 & 40).

For more information about this application, see the Energy Meter manual (P/N 026-1726).

6.3.6Modular Refrigerant Leak Detection Sensor (MRLDS)

Figure 6-6 - MRLDS

Modular Refrigerant Leak Detection Sensor (MRLDS) that continuously monitors for low levels of refrigerants most commonly used in commercial refrigeration systems

The MRLDS communicates with the E2 controller via MODBUS. The E2 will just provide an interface while the MRLDS will provide the leak monitoring functionality

ECT MODBUS The RS485 Network and Hardware Setup • 6-7