Emerson E2 User manual

026-1610 Rev 12 25-APR-2011
E2 Installation and Operation Manual for RX Refrigeration,
BX HVAC, and CX Convenience Store Controllers

Retail Solutions
3240 Town Point Drive NW, Suite 100
Kennesaw, GA 30144, USA
Phone [phone]
Fax [phone]
ALL RIGHTS RESERVED
The information contained in this manual has been carefully checked and is believed
to be accurate. However, Computer Process Controls, Inc. assumes no responsibility
for any inaccuracies that may be contained herein. In no event will Computer Process
Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential
damages resulting from any defect or omission in this manual, even if advised of the
possibility of such damages. In the interest of continued product development, Com-
puter Process Controls, Inc. reserves the right to make improvements to this manual,
and the products described herein, at any time without notice or obligation.
FCC COMPLIANCE NOTICE
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause
undesired operation.
CE COMPLIANCE NOTICE
Class A Product Information for Einstein, E2 Controllers:
The Retail Solutions Einstein and E2 controllers are Class A products. In a domestic
environment this product may cause radio interference in which case the user may be
required to take adequate measures. This covers:
• All Einstein family product types: RX - Refrigeration Controller
(830-xxxx), BX - Building/HVAC Controller (831-xxxx), and all ver-
sion models: (300, 400, 500).
• All E2 family product types: RX - Refrigeration Controller (834-xxxx),
BX - Building/HVAC Controller (835-xxxx), CX- Convenience Store
Controller (836-xxxx), and all version models: (300, 400, 500).

E2 RX/BX/CX I&O Manual Table of Contents • v
Table of Contents
1 INTRODUCTION...................................................................................................................................................... 1-1
1.1 THE E2 REFRIGERATION CONTROLLER..................................................................................................................... 1-1
1.2 THE E2 BUILDING CONTROLLER............................................................................................................................... 1-2
1.3 THE E2 CONVENIENCE STORE CONTROLLER............................................................................................................ 1-3
1.4 NETWORKING OVERVIEW.......................................................................................................................................... 1-4
1.4.1 E2 I/O Network .................................................................................................................................................. 1-4
1.4.2 The E2 Echelon Lonworks Network................................................................................................................... 1-5
1.4.3 Interconnection With Other E2s ........................................................................................................................ 1-5
1.5 DOCUMENTATION OVERVIEW ................................................................................................................................... 1-6
1.6 ON-LINE HELP SYSTEM OVERVIEW.......................................................................................................................... 1-7
1.7 SOFTWARE LICENSING............................................................................................................................................... 1-7
2 HARDWARE OVERVIEW...................................................................................................................................... 2-1
2.1 E2 HARDWARE .......................................................................................................................................................... 2-1
2.1.1 E2 Main Processor Board (CPU)...................................................................................................................... 2-2
2.1.2 E2 Processor Interface Board (PIB).................................................................................................................. 2-2
2.1.3 E2 Keypad.......................................................................................................................................................... 2-2
2.1.4 LEDs................................................................................................................................................................... 2-2
2.1.5 PC-104 Peripherals: The Internal Modem (Previous Generation Processor Board)....................................... 2-3
2.2 I/O NETWORK BOARDS AND PERIPHERALS............................................................................................................... 2-3
2.2.1 The Gateway Board ........................................................................................................................................... 2-3
2.2.2 MultiFlex Boards ............................................................................................................................................... 2-4
2.2.2.1 MultiFlex 16 Input Board ........................................................................................................................................ 2-4
2.2.2.2 MultiFlex Combination Input/Output Boards.......................................................................................................... 2-5
2.2.2.3 MultiFlex CUB ........................................................................................................................................................ 2-7
2.2.2.4 MultiFlex RTU (BX and CX Only)......................................................................................................................... 2-7
2.2.2.5 MultiFlex Rooftop Control Board (RCB) (BX and CX Only) ................................................................................ 2-7
2.2.2.6 MultiFlex PAK Board.............................................................................................................................................. 2-7
2.2.3 The MultiFlex ESR Board.................................................................................................................................. 2-8
2.2.4 Hand-held Terminal (P/N 814-3110)................................................................................................................. 2-8
2.2.5 The 8RO and 8ROSMT Relay Boards................................................................................................................ 2-9
2.2.6 4AO Analog Output Board............................................................................................................................... 2-10
2.2.7 8DO Digital Output Board and PMAC II Anti-Sweat Controller ................................................................... 2-10
2.3 ECHELON NETWORK BOARDS AND PERIPHERALS................................................................................................... 2-11
2.3.1 The 16AIe (Discontinued)................................................................................................................................ 2-11
2.3.2 The 8ROe (Discontinued)................................................................................................................................. 2-11
2.3.3 EC-2s................................................................................................................................................................ 2-11
2.3.4 CC-100 Case Controllers and CS-100 Case Circuit Controllers.................................................................... 2-12
2.3.5 The ESR8 (Discontinued)................................................................................................................................. 2-12
2.3.6 TD3 Temperature Display ............................................................................................................................... 2-13
2.3.7 Facility Status Display (FSD).......................................................................................................................... 2-13
3 MOUNTING............................................................................................................................................................... 3-1
3.1 MOUNTING THE E2.................................................................................................................................................... 3-1
3.1.1 Standard Mount.................................................................................................................................................. 3-1
3.1.2 Recessed Mount.................................................................................................................................................. 3-1
3.1.3 Retrofit Mounting............................................................................................................................................... 3-2
3.1.4 Blank Face ......................................................................................................................................................... 3-3
3.2 MOUNTING I/O BOARDS............................................................................................................................................ 3-3

vi • Table of Contents 026-1610 Rev 12 25-APR-2011
3.2.1 Single/Double Enclosures ................................................................................................................................. 3-3
3.2.2 Boards Without Enclosures (Snap Track).......................................................................................................... 3-4
3.3 ECHELON DEVICES .................................................................................................................................................... 3-4
3.3.1 16AIe and 8ROe................................................................................................................................................. 3-4
3.3.2 CC-100 Case Controller and CS-100 Case Circuit Controller......................................................................... 3-5
3.3.3 ESR8 (Discontinued).......................................................................................................................................... 3-5
3.3.4 MultiFlex ESR.................................................................................................................................................... 3-5
3.3.5 TD3..................................................................................................................................................................... 3-5
3.4 MODEM/COMMUNICATION EXPANSION CARD MOUNTING (NEW PROCESSOR BOARD)........................................... 3-5
3.4.1 Mounting PC-104 Cards in E2 (Previous Generation Processor Board)......................................................... 3-6
3.4.1.1 The Internal Modem ................................................................................................................................................ 3-6
3.4.2 Two-Channel and Four-Channel Repeaters ...................................................................................................... 3-6
3.4.2.1 Mounting Repeaters Overview................................................................................................................................ 3-6
3.4.2.2 Mounting the Two-Channel Repeater...................................................................................................................... 3-6
3.4.2.3 Mounting the Four-Channel Repeater ..................................................................................................................... 3-7
3.5 SENSORS AND TRANSDUCERS.................................................................................................................................... 3-7
3.5.1 Pressure Transducers......................................................................................................................................... 3-7
3.5.1.1 Mounting.................................................................................................................................................................. 3-7
3.5.2 Inside Temperature Sensor................................................................................................................................. 3-7
3.5.2.1 Location ................................................................................................................................................................... 3-7
3.5.2.2 Mounting.................................................................................................................................................................. 3-8
3.5.3 Outside Temperature Sensor.............................................................................................................................. 3-8
3.5.3.1 Location ................................................................................................................................................................... 3-8
3.5.3.2 Mounting.................................................................................................................................................................. 3-8
3.5.4 Insertion Temperature Probe............................................................................................................................. 3-8
3.5.4.1 Location ................................................................................................................................................................... 3-8
3.5.4.2 Mounting.................................................................................................................................................................. 3-8
3.5.5 Supply and Return Air Sensors........................................................................................................................... 3-8
3.5.6 Refrigeration System Temperature Probes and Sensors.................................................................................... 3-9
3.5.6.1 Location ................................................................................................................................................................... 3-9
3.5.6.2 Mounting Bullet and Pipe Mount Sensors............................................................................................................... 3-9
3.5.7 Product Temperature Probes............................................................................................................................. 3-9
3.5.8 Humidity Sensors and Humidistats.................................................................................................................... 3-9
3.5.8.1 Indoor RH Sensor .................................................................................................................................................... 3-9
3.5.8.2 Outdoor RH Sensors.............................................................................................................................................. 3-10
3.5.8.3 Duct-mounted Insertion RH Probe ........................................................................................................................ 3-10
3.5.9 Dewpoint Probe................................................................................................................................................ 3-11
3.5.9.1 Location ................................................................................................................................................................. 3-11
3.5.9.2 Mounting................................................................................................................................................................ 3-11
3.5.10 Light Level Sensor.......................................................................................................................................... 3-11
3.5.10.1 Location ............................................................................................................................................................... 3-11
3.5.10.2 Mounting.............................................................................................................................................................. 3-11
3.5.11 Liquid Level Sensors ...................................................................................................................................... 3-11
3.5.12 Refrigerant Leak Detectors............................................................................................................................ 3-11
4 E2 HARDWARE SETUP.......................................................................................................................................... 4-1
4.1 SETTING UP THE E2 ................................................................................................................................................... 4-1
4.1.1 Enclosure............................................................................................................................................................ 4-1
4.1.2 Main Processor Board....................................................................................................................................... 4-1
4.1.3 Main Processor Board (Previous Version)........................................................................................................ 4-2
4.1.4 Power Interface Board....................................................................................................................................... 4-2
4.2 POWERING THE E2..................................................................................................................................................... 4-2
4.2.1 RS485 Ports........................................................................................................................................................ 4-2
4.2.2 RS485 Jumpers................................................................................................................................................... 4-2
4.2.3 Echelon Network Connect.................................................................................................................................. 4-2

E2 RX/BX/CX I&O Manual Table of Contents • vii
4.2.4 Echelon Jumpers................................................................................................................................................ 4-2
4.3 ADD-ONE2 PERIPHERALS......................................................................................................................................... 4-3
4.3.1 Echelon Card Plug-In (P/N 537-4860) with mounting screw (P/N 101-4201) ................................................. 4-3
4.3.2 Modem/Communication Expansion Card (New Processor Board)................................................................... 4-4
4.3.3 Plug-In Modem Card (P/N 537-4870) with mounting screws
(P/N 101-4038) and standoffs (P/N 107-9440) (Previous Generation Processor Board) ........................................... 4-4
4.3.4 Plug-In Digital I/O Network Card (P/N 537-4880)........................................................................................... 4-4
4.3.4.1 LEDs ........................................................................................................................................................................ 4-5
4.3.5 E2 RS485 Port Card (P/N 537-4890)................................................................................................................ 4-5
4.3.5.1 LEDs ........................................................................................................................................................................ 4-5
4.3.6 Plug-In Four-Channel Internal Repeater.......................................................................................................... 4-5
4.4 BATTERY TESTING AND REPLACEMENT.................................................................................................................... 4-5
4.4.1 Low Battery Notification.................................................................................................................................... 4-6
4.4.2 The Battery Enable Switch................................................................................................................................. 4-6
4.4.3 Battery Test........................................................................................................................................................ 4-6
4.4.4 Battery Replacement - Qualified Technicians Only........................................................................................... 4-6
5 SERIAL CONFIGURATION................................................................................................................................... 5-1
5.1 OVERVIEW ................................................................................................................................................................. 5-1
5.2 COM PORTS .............................................................................................................................................................. 5-1
5.3 SERIAL DEVICE AND SOFTWARE SETUP.................................................................................................................... 5-1
6 THE RS485 NETWORK AND HARDWARE SETUP.......................................................................................... 6-1
6.1 THE I/O NETWORK .................................................................................................................................................... 6-1
6.1.1 I/O Board Names and Terminology................................................................................................................... 6-1
6.1.2 MultiFlex-Plus (+) Board.................................................................................................................................. 6-2
6.1.2.1 Board Designation ................................................................................................................................................... 6-2
6.1.2.2 Board Calculations................................................................................................................................................... 6-2
6.1.3 Wiring Types...................................................................................................................................................... 6-2
6.1.4 The I/O Network Structure (Daisy Chains)........................................................................................................ 6-2
6.1.5 Network Noise Minimization.............................................................................................................................. 6-2
6.1.6 Network ID Numbers (Board Numbers) ............................................................................................................ 6-3
6.1.7 Setting the Baud Rate......................................................................................................................................... 6-3
6.1.8 Setting the Terminating and Biasing Jumpers................................................................................................... 6-4
6.1.9 Powering the I/O Boards ................................................................................................................................... 6-4
6.1.9.1 Wiring Types ........................................................................................................................................................... 6-5
6.1.10 Board Installation............................................................................................................................................ 6-5
6.2 IMC/PRODIGY ROOFTOP UNIT CONTROLLERS.......................................................................................................... 6-5
6.3 ECT MODBUS......................................................................................................................................................... 6-6
6.3.1 Control Techniques Drive (VSD)....................................................................................................................... 6-6
6.3.2 Copeland ISD Compressors............................................................................................................................... 6-6
6.3.3 XR, XEV, and XEV22D Case Controllers.......................................................................................................... 6-6
6.3.4 iPro DAC............................................................................................................................................................ 6-7
6.3.5 Energy Meter...................................................................................................................................................... 6-7
6.3.5.1 Overview.................................................................................................................................................................. 6-7
6.3.5.2 Supported System Types.......................................................................................................................................... 6-7
6.3.6 Modular Refrigerant Leak Detection Sensor (MRLDS) ................................................................................... 6-7
6.3.7 Discus ................................................................................................................................................................ 6-8
7 E2 ETHERNET PEER COMMUNICATIONS...................................................................................................... 7-1
7.1 ETHERNET IP CONFIGURATIONS ............................................................................................................................... 7-1
7.2 HARDWARE SPECIFICATIONS..................................................................................................................................... 7-1
7.2.1 Components........................................................................................................................................................ 7-1
7.3 SOFTWARE SPECIFICATIONS ...................................................................................................................................... 7-2

viii • Table of Contents 026-1610 Rev 12 25-APR-2011
7.4 ETHERNET NETWORK LAYOUTS................................................................................................................................ 7-2
7.4.1 Closed Network Layout...................................................................................................................................... 7-2
7.4.2 Open Network Layout......................................................................................................................................... 7-3
7.5 SOFTWARE SETUP...................................................................................................................................................... 7-3
7.6 TROUBLESHOOTING ................................................................................................................................................... 7-4
8 ECHELON NETWORK AND HARDWARE SETUP........................................................................................... 8-1
8.1 OVERVIEW ................................................................................................................................................................. 8-1
8.2 WIRING TYPE............................................................................................................................................................. 8-1
8.3 ECHELON NETWORK STRUCTURING (DAISY-CHAINS) .............................................................................................. 8-1
8.3.1 Maximum Number of Echelon Devices.............................................................................................................. 8-2
8.4 DEVICE TERMINATION............................................................................................................................................... 8-2
8.4.1 Using a Termination Block (P/N 535-2715) to Terminate a Daisy Chain......................................................... 8-3
8.5 WIRE RESTRICTIONS.................................................................................................................................................. 8-3
8.6 INSTALLING ECHELON DEVICES ................................................................................................................................ 8-3
8.6.1 Powering Echelon Devices................................................................................................................................. 8-3
8.7 LEDS......................................................................................................................................................................... 8-4
8.8 OPEN ECHELON DEVICE CONNECTIVITY................................................................................................................... 8-4
8.8.1 Configuring Echelon Devices............................................................................................................................. 8-4
8.8.1.1 Troubleshooting....................................................................................................................................................... 8-5
9 INPUT AND OUTPUT SETUP................................................................................................................................ 9-1
9.1 THE 16AI, 8IO, AND MULTIFLEX INPUTS................................................................................................................. 9-1
9.1.1 Connecting Sensors to Input Boards.................................................................................................................. 9-1
9.1.1.1 Wiring ...................................................................................................................................................................... 9-1
9.1.1.2 Sensor Wiring Types................................................................................................................................................ 9-1
9.1.1.3 Input Type Dip Switches ......................................................................................................................................... 9-1
9.1.2 Power Connection.............................................................................................................................................. 9-2
9.1.3 Input Setup in E2................................................................................................................................................ 9-6
9.1.3.1 Configuring a Point from the Input Definitions/Status Screen................................................................................ 9-6
9.1.3.2 Using the Input Definitions/Status Screen............................................................................................................... 9-7
9.1.3.3 Setting Up Analog Inputs......................................................................................................................................... 9-7
9.1.3.4 Setting Up Digital Inputs......................................................................................................................................... 9-9
9.2 THE 8RO, 8ROE, 8IO, AND MULTIFLEX OUTPUTS................................................................................................. 9-10
9.2.1 Wiring Form C Contacts.................................................................................................................................. 9-10
9.2.2 MultiFlex Relay Outputs .................................................................................................................................. 9-10
9.2.3 Setting the Fail-Safe Dip Switch ...................................................................................................................... 9-10
9.2.4 Wiring Outputs to Points.................................................................................................................................. 9-11
9.2.5 The Output LED............................................................................................................................................... 9-11
9.2.6 Output Setup in E2 ........................................................................................................................................... 9-11
9.2.6.1 Configuring a Point from the Output Definitions/Status Screen........................................................................... 9-11
9.2.6.2 Using the Output Definitions/Status Screen .......................................................................................................... 9-11
9.2.6.3 Setting Up Digital Outputs..................................................................................................................................... 9-12
9.2.6.4 Setting Up Analog Outputs.................................................................................................................................... 9-13
9.3 CC-100 CASE CONTROLLERS.................................................................................................................................. 9-14
9.3.1 Inputs................................................................................................................................................................ 9-14
9.3.2 Power Module Wiring...................................................................................................................................... 9-15
9.3.3 Valve Cable...................................................................................................................................................... 9-15
9.4 ESR8 VALVE OUTPUT WIRING ............................................................................................................................... 9-16
10 QUICK START...................................................................................................................................................... 10-1
10.1 LOGGING ON.......................................................................................................................................................... 10-1
10.2 CLEANING OUT THE CONTROLLER........................................................................................................................ 10-1
10.3 SETTING NUMBER OF NETWORK DEVICES ............................................................................................................ 10-2
10.4 SETTING NUMBER OF APPLICATIONS .................................................................................................................... 10-3

E2 RX/BX/CX I&O Manual Table of Contents • ix
10.5 THE MAIN STATUS (HOME) SCREEN..................................................................................................................... 10-3
10.5.1 Customizing the Home Screen ....................................................................................................................... 10-3
10.6 COMMON SCREEN ELEMENTS ............................................................................................................................... 10-4
10.6.1 The Header..................................................................................................................................................... 10-4
10.6.1.1 Header Icons ........................................................................................................................................................ 10-4
10.6.2 The Function Keys ......................................................................................................................................... 10-4
10.6.3 The Help Line................................................................................................................................................. 10-4
10.7 SCREEN TYPES....................................................................................................................................................... 10-5
10.7.1 The Main Menu.............................................................................................................................................. 10-5
10.7.2 Status Screens ................................................................................................................................................ 10-5
10.7.3 The Actions Menu........................................................................................................................................... 10-6
10.7.4 The Setup Screens .......................................................................................................................................... 10-7
10.7.5 System Configuration Menu........................................................................................................................... 10-7
10.7.6 The System Information Menu ....................................................................................................................... 10-8
10.8 TIME/DATE SETUP................................................................................................................................................. 10-9
10.8.1 Setting the Time and Date.............................................................................................................................. 10-9
10.9 SET UPMODEM................................................................................................................................................... 10-10
10.10 SET UPTCP/IP.................................................................................................................................................. 10-11
10.11 SET UPNETWORK BAUD RATES...................................................................................................................... 10-12
10.11.1 COM1 Serial (RS232) Baud Rate .............................................................................................................. 10-12
10.11.2 I/O Network Baud Rate.............................................................................................................................. 10-12
10.12 SET UPUSER ACCESS ....................................................................................................................................... 10-13
10.12.1 Changing Required User Access Levels .................................................................................................... 10-14
10.12.2 Creating a New User Account ................................................................................................................... 10-14
10.12.3 Deleting a User.......................................................................................................................................... 10-14
10.13 SET UPI/O NETWORK....................................................................................................................................... 10-15
10.13.1 Specify Number of Boards.......................................................................................................................... 10-15
10.13.2 Checking Online Status.............................................................................................................................. 10-16
10.14 SET UPECHELON NETWORK............................................................................................................................. 10-16
10.14.1 Specifying Number of Devices ................................................................................................................... 10-16
10.14.2 Commissioning a Device............................................................................................................................ 10-17
10.14.2.1 The Service Button Method............................................................................................................................. 10-17
10.14.2.2 The Manual ID Entry Method.......................................................................................................................... 10-19
10.15 LICENSE MANAGEMENT .................................................................................................................................... 10-19
10.15.1 Web Services.............................................................................................................................................. 10-20
10.16 SET UPALARMING ............................................................................................................................................ 10-21
10.16.1 Specifying Alarm Reporting Types............................................................................................................. 10-22
10.16.1.1 The Display Line.............................................................................................................................................. 10-22
10.16.1.2 The Alarm Output............................................................................................................................................ 10-22
10.16.1.3 Dial-Out ........................................................................................................................................................... 10-22
10.16.1.4 The Echelon Network (The Alarm Annunciator)............................................................................................ 10-22
10.16.2 Setting up an E2 to be an Alarm Annunciator........................................................................................... 10-22
10.16.3 Alarm Dial-Out.......................................................................................................................................... 10-23
10.16.4 Introduction: Alarm Reporting.................................................................................................................. 10-23
10.17 SET UPGLOBAL DATA...................................................................................................................................... 10-24
10.17.1 Priority Settings ......................................................................................................................................... 10-24
10.18 SET UPAPPLICATIONS....................................................................................................................................... 10-25
10.18.1 Add/Delete an Application......................................................................................................................... 10-26
10.18.2 Using and Configuring a Setup Screen...................................................................................................... 10-26
10.18.2.1 The Edit Menu ................................................................................................................................................. 10-27
10.18.2.2 Entering Setpoints............................................................................................................................................ 10-27
10.18.2.3 Navigating the Setup Screen............................................................................................................................ 10-27
10.18.3 Using the Help Key to get Property Help.................................................................................................. 10-29
11 SOFTWARE OVERVIEW................................................................................................................................... 11-1

x • Table of Contents 026-1610 Rev 12 25-APR-2011
11.1 SUCTION GROUPS .................................................................................................................................................. 11-1
11.1.1 Introduction.................................................................................................................................................... 11-1
11.1.2 The (Standard) Suction Group Application ................................................................................................... 11-1
11.1.2.1 Overview of PID Control Strategy ...................................................................................................................... 11-1
11.1.2.2 Variable-Speed Compressors............................................................................................................................... 11-1
11.1.2.3 Floating Setpoint Control..................................................................................................................................... 11-1
11.1.3 The Enhanced Suction Group Application..................................................................................................... 11-1
11.1.3.1 Learning Mode..................................................................................................................................................... 11-2
11.1.3.2 Circuit Load Analysis .......................................................................................................................................... 11-2
11.1.3.3 The Control/Cycles Parameter............................................................................................................................. 11-2
11.1.3.4 Variable-Speed, Digital Scroll, and Digital Discus Compressor Support........................................................... 11-2
11.1.3.5 Floating Suction Control...................................................................................................................................... 11-2
11.1.4 Hardware Overview....................................................................................................................................... 11-2
11.2 CONDENSER CONTROL........................................................................................................................................... 11-3
11.2.1 Air Cooled Condensers .................................................................................................................................. 11-3
11.2.1.1 Air Cooled Strategy ............................................................................................................................................. 11-3
11.2.1.2 Temperature Differential Strategy....................................................................................................................... 11-3
11.2.2 Evaporative Condensers ................................................................................................................................ 11-4
11.2.3 Fan Control.................................................................................................................................................... 11-4
11.2.4 Condenser Split Mode.................................................................................................................................... 11-4
11.2.5 Fast Recovery................................................................................................................................................. 11-4
11.2.6 Hardware Overview....................................................................................................................................... 11-4
11.3 STANDARD CIRCUITS............................................................................................................................................. 11-5
11.3.1 Refrigeration Control..................................................................................................................................... 11-5
11.3.1.1 Temperature Monitor........................................................................................................................................... 11-6
11.3.1.2 Temperature Control............................................................................................................................................ 11-6
11.3.1.3 Line Up(ESR)/Defrost ......................................................................................................................................... 11-6
11.3.1.4 Line Up(MFESR)/Defrost ................................................................................................................................... 11-6
11.3.2 Defrost Control .............................................................................................................................................. 11-6
11.3.2.1 Defrost States....................................................................................................................................................... 11-6
11.3.2.2 Defrost Types....................................................................................................................................................... 11-6
11.3.2.3 Defrost Termination............................................................................................................................................. 11-7
11.3.2.4 Emergency Defrost .............................................................................................................................................. 11-7
11.3.2.5 Hot Gas Defrost with ESR8 and MultiFlex ESR................................................................................................. 11-7
11.3.3 Clean and Door Switches............................................................................................................................... 11-7
11.3.3.1 Clean Switches..................................................................................................................................................... 11-7
11.3.3.2 Door Switches...................................................................................................................................................... 11-7
11.3.4 Fan Control.................................................................................................................................................... 11-8
11.3.5 The TD3 Temperature
Display ........................................................................................................................................................................ 11-8
11.3.6 The Control Link CD Case Display ............................................................................................................... 11-8
11.3.7 Wiring............................................................................................................................................................. 11-8
11.4 CASE CONTROL CIRCUITS ................................................................................................................................... 11-10
11.4.1 Overview....................................................................................................................................................... 11-10
11.4.2 Case Circuit Control Software Overview..................................................................................................... 11-10
11.4.2.1 Valve Control..................................................................................................................................................... 11-11
11.4.3 Refrigeration Control................................................................................................................................... 11-11
11.4.3.1 EEVs (Liquid Pulse and Liquid Stepper)........................................................................................................... 11-11
11.4.3.2 EEPRs (Suction Stepper)................................................................................................................................... 11-12
11.4.4 Defrost Control ........................................................................................................................................... 11-12
11.4.4.1 Defrost States..................................................................................................................................................... 11-12
11.4.4.2 Defrost Types..................................................................................................................................................... 11-12
11.4.4.3 Defrost Termination........................................................................................................................................... 11-13
11.4.4.4 Demand Defrost................................................................................................................................................. 11-13
11.4.4.5 Emergency Defrost ............................................................................................................................................ 11-13
11.4.4.6 The WAIT State................................................................................................................................................. 11-13

E2 RX/BX/CX I&O Manual Table of Contents • xi
11.4.5 Anti-Sweat Control....................................................................................................................................... 11-13
11.4.5.1 Dewpoint Input Sources..................................................................................................................................... 11-14
11.4.6 Dual Temp Control ...................................................................................................................................... 11-14
11.4.7 Fan Control.................................................................................................................................................. 11-14
11.4.8 Light Control................................................................................................................................................ 11-14
11.4.9 Clean/Wash Mode........................................................................................................................................ 11-14
11.4.10 Walk-In Freezer Control............................................................................................................................ 11-15
11.4.11 Fail-Safe Mode........................................................................................................................................... 11-15
11.4.11.1 Recoverable Sensor Failures............................................................................................................................ 11-15
11.4.12 Wiring......................................................................................................................................................... 11-16
11.4.13 Setting Up An Individual Case Controller................................................................................................. 11-16
11.4.14 Associating Case Controllers with Case Circuit Control Applications..................................................... 11-16
11.5 LOGGING GROUPS ............................................................................................................................................... 11-16
11.5.1 Possible Data Errors ................................................................................................................................... 11-17
11.5.2 Data Compression........................................................................................................................................ 11-17
11.5.2.1 Clipping.............................................................................................................................................................. 11-17
11.5.2.2 Incompressible Data Types................................................................................................................................ 11-17
11.5.3 Base Log Group........................................................................................................................................... 11-17
11.5.4 Setting Up Logging ...................................................................................................................................... 11-18
11.5.5 Logging Group Status Screen...................................................................................................................... 11-19
11.5.6 Log Reports.................................................................................................................................................. 11-19
11.5.6.1 Logging Group Report....................................................................................................................................... 11-20
11.5.6.2 Application Log Report ..................................................................................................................................... 11-20
11.5.6.3 System Log Report ............................................................................................................................................ 11-20
11.6 AIR HANDLING UNITS (AHU)............................................................................................................................. 11-21
11.6.1 Overview ...................................................................................................................................................... 11-21
11.6.2 Temperature Control.................................................................................................................................... 11-21
11.6.3 Alternate Setpoints....................................................................................................................................... 11-21
11.6.4 Fan Control.................................................................................................................................................. 11-21
11.6.4.1 Single-Speed Fans.............................................................................................................................................. 11-21
11.6.4.2 Two-Speed Fans................................................................................................................................................. 11-22
11.6.4.3 Variable-Speed Fans.......................................................................................................................................... 11-22
11.6.5 Economizer Control..................................................................................................................................... 11-22
11.6.5.1 Economization Enable....................................................................................................................................... 11-22
11.6.5.2 Economization Lockout Features ...................................................................................................................... 11-23
11.6.6 Digital Economizer Control......................................................................................................................... 11-23
11.6.7 Analog Economizer Control......................................................................................................................... 11-23
11.6.8 Dehumidification Control............................................................................................................................ 11-23
11.6.9 Curtailment .................................................................................................................................................. 11-23
11.6.10 Optimum Start/Stop (OSS)......................................................................................................................... 11-23
11.6.11 Separate Setpoints...................................................................................................................................... 11-24
11.6.12 AHU Zone Control..................................................................................................................................... 11-24
11.6.13 Hardware Overview................................................................................................................................... 11-24
11.7 ZONE CONTROL ................................................................................................................................................... 11-25
11.7.1 Overview ...................................................................................................................................................... 11-25
11.7.2 How Zones Work.......................................................................................................................................... 11-26
11.7.3 Applications That May Be Connected To Zones.......................................................................................... 11-26
11.7.3.1 MultiFlex RTU Board........................................................................................................................................ 11-26
11.7.3.2 MultiFlex RCB Board........................................................................................................................................ 11-26
11.7.3.3 AHUs ................................................................................................................................................................. 11-26
11.7.4 Temperature Control.................................................................................................................................... 11-27
11.7.5 Zone Temperature........................................................................................................................................ 11-27
11.7.6 Economizer Control..................................................................................................................................... 11-27
11.7.7 Economization Enable ................................................................................................................................ 11-27
11.7.8 The Effect of Enabling Economization......................................................................................................... 11-28

xii • Table of Contents 026-1610 Rev 12 25-APR-2011
11.7.9 Dehumidification Control ............................................................................................................................ 11-28
11.7.10 The Zone Humidity Input............................................................................................................................ 11-28
11.7.11 The Effect of Enabling Dehumidification................................................................................................... 11-28
11.7.11.1 MultiFlex RTUs and RCBs.............................................................................................................................. 11-28
11.7.11.2 AHUs ............................................................................................................................................................... 11-28
11.7.12 Optimum Start/Stop (OSS) ......................................................................................................................... 11-28
11.7.13 Losing Contact With Zone Applications..................................................................................................... 11-29
11.7.14 Stand-Alone MultiFlex RTUs..................................................................................................................... 11-29
11.7.15 MultiFlex RTU/ARTC and AHU Zone Association.................................................................................... 11-29
11.8 MULTIFLEX CUB BOARD.................................................................................................................................... 11-30
11.9 MULTIFLEX PAK BOARD.................................................................................................................................... 11-30
11.10 LIGHTING SCHEDULES ....................................................................................................................................... 11-30
11.10.1 Overview..................................................................................................................................................... 11-30
11.10.2 Functions of the Lighting Schedule Application........................................................................................ 11-31
11.10.3 Control Method Select................................................................................................................................ 11-31
11.10.4 Standard Control........................................................................................................................................ 11-31
11.10.4.1 The Light Level Interface Cell (LLEV INTERFACE).................................................................................... 11-31
11.10.4.2 The Schedule Interface Cell (SCHEDIF) ........................................................................................................ 11-32
11.10.5 Alternate Control........................................................................................................................................ 11-32
11.10.5.1 Multi-Logic Combiner..................................................................................................................................... 11-32
11.10.5.2 Offset Solar Control......................................................................................................................................... 11-33
11.10.6 The Basic Schedule Cell............................................................................................................................ 11-33
11.10.6.1 Slave Scheduling.............................................................................................................................................. 11-33
11.10.7 The Min ON/OFF Cell............................................................................................................................... 11-33
11.10.8 The Proof Cell............................................................................................................................................ 11-33
11.10.9 Output Light Dimming .............................................................................................................................. 11-34
11.11 DEMAND CONTROL............................................................................................................................................ 11-34
11.11.1 Introduction to Demand Limit Control ...................................................................................................... 11-34
11.11.2 Demand Monitoring................................................................................................................................... 11-34
11.11.3 Load Shedding............................................................................................................................................ 11-35
11.11.3.1 Definition......................................................................................................................................................... 11-35
11.11.4 Shedding Levels.......................................................................................................................................... 11-35
11.11.5 Priority Levels........................................................................................................................................... 11-35
11.11.6 How Demand Control Uses Load Shedding ............................................................................................. 11-37
11.11.6.1 Power Monitoring Input................................................................................................................................... 11-38
11.12 SENSOR CONTROL.............................................................................................................................................. 11-38
11.12.1 Overview..................................................................................................................................................... 11-38
11.12.2 Analog Sensor Control............................................................................................................................... 11-38
11.12.3 Cut In/Cut Out Setpoint Control ................................................................................................................ 11-38
11.12.4 Digital Sensor Control............................................................................................................................... 11-38
11.12.5 Logical Combination.................................................................................................................................. 11-39
11.13 LOOP/SEQUENCE CONTROL ............................................................................................................................... 11-39
11.13.1 Layout of the Loop/Sequence Control Application.................................................................................... 11-39
11.13.1.1 Control Cells.................................................................................................................................................... 11-39
11.13.1.2 Output Cells ..................................................................................................................................................... 11-40
11.13.1.3 Diagram............................................................................................................................................................ 11-40
11.13.2 Loop/Sequence Control Cell Descriptions................................................................................................. 11-40
11.13.2.1 The Select Cell................................................................................................................................................. 11-40
11.13.2.2 The Setpoint Float Cell.................................................................................................................................... 11-41
11.13.2.3 The PID Control Cell....................................................................................................................................... 11-41
11.13.2.4 The Filter Cell.................................................................................................................................................. 11-41
11.13.2.5 The Override Cell ............................................................................................................................................ 11-41
11.13.3 Output Cell Descriptions............................................................................................................................ 11-41
11.13.3.1 The Sequencer Cell.......................................................................................................................................... 11-41
11.13.3.2 The PWM Cell................................................................................................................................................. 11-41

E2 RX/BX/CX I&O Manual Table of Contents • xiii
11.14 TIME SCHEDULING AND HOLIDAYS................................................................................................................... 11-42
11.14.1 How Schedules Work ................................................................................................................................. 11-42
11.14.1.1 Events............................................................................................................................................................... 11-42
11.14.1.2 Absolute and Relative Events.......................................................................................................................... 11-42
11.14.1.3 Temporary Schedule Events............................................................................................................................ 11-42
11.14.1.4 Overlapping...................................................................................................................................................... 11-43
11.14.1.5 Ranges.............................................................................................................................................................. 11-43
11.14.2 Holiday Schedules...................................................................................................................................... 11-43
11.15 POWER MONITORING......................................................................................................................................... 11-43
11.15.1 Overview .................................................................................................................................................... 11-43
11.15.2 Logging ...................................................................................................................................................... 11-44
11.15.2.1 Power Monitoring Input................................................................................................................................... 11-44
11.16 ANTI-SWEAT SETUP .......................................................................................................................................... 11-45
11.16.1 How Anti-Sweat Works .............................................................................................................................. 11-45
11.17 HEAT/COOL CONTROL....................................................................................................................................... 11-45
11.17.1 Temperature Control.................................................................................................................................. 11-45
11.17.2 Unoccupied Hysteresis.............................................................................................................................. 11-45
11.17.3 Optimum Start/Stop (OSS)......................................................................................................................... 11-46
11.17.4 Setpoint Reset............................................................................................................................................. 11-46
11.17.5 Lead/Lag .................................................................................................................................................... 11-47
11.18 ANALOG AND DIGITAL COMBINERS.................................................................................................................. 11-47
11.19 TD CONTROL..................................................................................................................................................... 11-48
11.19.1 Overview .................................................................................................................................................... 11-48
11.19.2 Temperature Differential (TD) Strategy.................................................................................................... 11-48
11.19.3 TD Control Fail-Safes................................................................................................................................ 11-48
11.19.4 Configuration............................................................................................................................................. 11-48
11.19.5 Setpoints..................................................................................................................................................... 11-48
11.19.6 Inputs.......................................................................................................................................................... 11-49
11.19.7 Alarms........................................................................................................................................................ 11-49
11.20 PULSE ACCUMULATION..................................................................................................................................... 11-49
11.20.1 Overview .................................................................................................................................................... 11-49
11.20.2 Configuration............................................................................................................................................. 11-49
11.20.3 Outputs....................................................................................................................................................... 11-49
11.20.4 Accumulator Reset Types........................................................................................................................... 11-50
11.20.5 Logging ...................................................................................................................................................... 11-50
11.20.6 High Trip.................................................................................................................................................... 11-50
11.21 IRRIGATION CONTROL ....................................................................................................................................... 11-50
11.21.1 Overview .................................................................................................................................................... 11-50
11.21.2 Zones and Cycles ....................................................................................................................................... 11-50
11.21.2.1 Cycle Control Types ........................................................................................................................................ 11-51
11.21.2.2 Timed............................................................................................................................................................... 11-51
11.21.2.3 Volume............................................................................................................................................................. 11-51
11.21.3 Cycle Scheduling....................................................................................................................................... 11-51
11.21.4 Zone Inhibit................................................................................................................................................ 11-51
11.21.4.1 Timed............................................................................................................................................................... 11-51
11.21.4.2 Volume............................................................................................................................................................. 11-51
11.21.4.3 Rain Delay ....................................................................................................................................................... 11-51
11.21.4.4 Freeze Lockout................................................................................................................................................. 11-51
11.21.4.5 Alarm ............................................................................................................................................................... 11-51
11.21.5 Zone Bypass Inputs .................................................................................................................................... 11-51
11.21.5.1 Bypass Failsafe ................................................................................................................................................ 11-52
11.21.6 Flow Sensor-Related Tests......................................................................................................................... 11-52
11.21.6.1 Leak Test.......................................................................................................................................................... 11-52
11.21.6.2 Obstructed Zone Test....................................................................................................................................... 11-52
11.21.7 Service Modes............................................................................................................................................ 11-52

11.21.8 Heat Cut In/Cut Out Setpoints For Each Stage ......................................................................................... 11-52
11.21.9 Cool Cut In/Cut Out Setpoints For Each Stage ......................................................................................... 11-52
11.21.10 Dehumidification Control ....................................................................................................................... 11-52
11.21.11 Two Speed Fan Control........................................................................................................................... 11-52
11.21.12 Configuration.......................................................................................................................................... 11-53
11.22 FLEXIBLE COMBINER......................................................................................................................................... 11-53
11.23 MODULAR CHILLER CONTROL (MCC).............................................................................................................. 11-53
11.23.1 Overview..................................................................................................................................................... 11-53
11.23.2 Learning Mode........................................................................................................................................... 11-54
11.23.3 The Control/Cycles Parameter................................................................................................................... 11-54
11.23.4 Compressor Control................................................................................................................................... 11-54
11.23.4.1 Digital Scroll Compressor................................................................................................................................ 11-55
11.23.4.2 Variable Frequency Drive Compressor ........................................................................................................... 11-55
11.23.4.3 Unequal Capacity Compressors....................................................................................................................... 11-55
11.23.5 Bypass Valve Control................................................................................................................................. 11-55
11.24 BOILER............................................................................................................................................................... 11-55
11.24.1 Overview..................................................................................................................................................... 11-55
11.24.2 Alarms ........................................................................................................................................................ 11-55
11.25 REFRIGERANT MONITORING SYSTEM (RMS).................................................................................................... 11-56
11.25.1 RMS Asset................................................................................................................................................... 11-56
11.25.2 RMS Scale .................................................................................................................................................. 11-56
11.25.2.1 Device Constraints........................................................................................................................................... 11-56
11.26 DETAILED SETPOINT CHANGE LOGGING ........................................................................................................... 11-56
11.26.1 Log Information.......................................................................................................................................... 11-56
11.26.2 Logged Changes......................................................................................................................................... 11-57
11.26.3 Unlogged Changes..................................................................................................................................... 11-57
12 OPERATOR’S GUIDE TO USING THE E2...................................................................................................... 12-1
12.1 THE E2 HOME SCREEN.......................................................................................................................................... 12-1
12.1.1 RX Home Screen............................................................................................................................................. 12-1
12.1.2 BX Home Screen............................................................................................................................................. 12-1
12.1.3 CX Home Screen ............................................................................................................................................ 12-2
12.2 LOGGING ONAND ACCESS LEVELS....................................................................................................................... 12-2
12.3 TOGGLING FULL OPTIONS ..................................................................................................................................... 12-3
12.4 NAVIGATION .......................................................................................................................................................... 12-3
12.4.1 Menus............................................................................................................................................................. 12-3
12.4.2 Screen Types................................................................................................................................................... 12-5
12.4.3 The E2 Keypad............................................................................................................................................... 12-6
12.5 CUSTOMIZING THE HOME SCREEN ........................................................................................................................ 12-9
12.6 MANUAL DEFROST AND CLEAN MODE ................................................................................................................. 12-9
12.7 OVERRIDES .......................................................................................................................................................... 12-10
12.8 CHECKING BOARDS ONLINE................................................................................................................................ 12-11
12.9 CHECKING STATUS SCREENS............................................................................................................................... 12-11
12.10 ALARMS............................................................................................................................................................. 12-12
12.10.1 Accessing the Alarm Advisory Log............................................................................................................. 12-12
12.10.2 Viewing the Controller Advisory Log......................................................................................................... 12-12
12.10.3 Date and Time............................................................................................................................................ 12-12
12.10.4 State............................................................................................................................................................ 12-12
12.10.5 Ack/Reset State........................................................................................................................................... 12-13
12.10.6 Area Ctrl: Application: Property............................................................................................................... 12-13
12.10.7 Advisory Message....................................................................................................................................... 12-13
12.10.8 Acknowledging, Resetting, and Clearing Log Entries ............................................................................... 12-13
12.10.8.1 Acknowledging................................................................................................................................................ 12-13
12.10.8.2 Resetting .......................................................................................................................................................... 12-14

E2 RX/BX/CX I&O Manual Table of Contents • xv
12.10.8.3 Clearing............................................................................................................................................................ 12-14
12.10.9 Facility Status Display (FSD) Alarms ....................................................................................................... 12-15
12.11 VIEWING LOGS AND GRAPHS ............................................................................................................................ 12-15
12.11.1 Locating Logged Inputs/Outputs................................................................................................................ 12-15
12.11.1.1 Home/Status Screens ....................................................................................................................................... 12-15
12.11.1.2 Setup Screens................................................................................................................................................... 12-16
12.11.1.3 Setting Up Input and Output Pointers.............................................................................................................. 12-16
12.11.2 Log View .................................................................................................................................................... 12-17
12.11.3 The Graph View......................................................................................................................................... 12-17
12.11.4 Zooming In and Out................................................................................................................................... 12-17
12.12 LOW BATTERY NOTIFICATION .......................................................................................................................... 12-18
12.13 NAMING CONVENTIONS FOR E2 CONTROLLERS, APPLICATIONS, AND POINTS................................................ 12-18
APPENDIX A: CASE TYPE DEFAULTS................................................................................................................ A-1
APPENDIX B: PRESSURE/VOLTAGE AND TEMPERATURE/RESISTANCE CHARTS FOR ECLIPSE
TRANSDUCERS & RETAIL SOLUTIONS TEMP SENSORS................................................................................ B-1
APPENDIX C: ALARM ADVISORY MESSAGES................................................................................................. C-1
APPENDIX D: PID CONTROL................................................................................................................................. D-1
APPENDIX E: COMPRESSED POINT LOG SAMPLE LIMITS AND PRECISION TAB .............................. E-1
APPENDIX F: TROUBLESHOOTING.................................................................................................................... F-1
INDEX............................................................................................................................................................................ I-1

The E2 Refrigeration Controller Introduction • 1-1
1Introduction
The E2 controller is a microprocessor-based control
system designed to provide complete control of compres-
sor groups, condensers, refrigerated cases, and other com-
ponents related to refrigeration and building control. The
E2 is the controlling component of a three-network config-
uration (RS485 I/O, Echelon®Lonworks™Networks, and
Ethernet) that includes input and output communication
boards, remote communication software, and a variety of
sensors, probes, and transducers.
The E2 efficiently operates all systems that support
refrigeration (including compressor racks and condensers)
and other components not directly related to refrigeration
control, such as HVAC systems, anti-sweat heaters, and
sensor control modules.
1.1 The E2 Refrigeration
Controller
The E2 RX is available in three models: the RX-300,
RX-400, and RX-100. The E2 RX-300 is capable of con-
trolling a single refrigeration system (including one con-
denser and up to four suction groups). The E2 RX-400 is
capable of controlling two separate refrigeration systems
(including two condensers and up to four suction groups).
The RX-100 is a low-cost alternative to the RX-300 with
fewer capabilities and a monochrome display.
The E2 RX is primarily designed to control tempera-
ture and defrost in refrigerated cases using either direct
control (connected to the E2 via I/O boards or ESR8
lineup control boards) or by using CC-100 case control
boards (connected via the LonWorks Network).
Table 1-1 shows the differences between capabilities
for the RX-300 and RX-400.
Figure 1-1 - E2 Controller
Capabilities RX-
100 RX- 300 RX- 400
Analog Combiner 0 128 128
Analog Import Point 0 64 64
Analog Sensor Control 24 64 72
Anti-Sweat 8 16 64
Case Control Circuit 0 48 64
CC100 Case Suction 0 99 99
CC100 Liquid Control 0 99 99
CCB 0 99 99
Condenser 1 1 2
Control Link ACC 16 63 63
Control Link Case Disp 0 99 99
Control Link RSC 0 99 99
CS100 Ckt Suction 0 99 99
CT Drive 0 16 16
Digital Combiner 0 128 128
Digital Sensor Control 24 64 72
Discus 0 63 63
E2 Alarm Panel 7 7 7
Energy Meter 30 30 30
Enhanced Suction Group 4 4 4
ESR8 ESR Control 0 99 99
Flexible Combiner 64 128 128
Heat/Cool Control 0 16 16
Holiday Schedule 4 64 64
Table 1-1 - RX-100, RX-300, and RX-400 Comparison

1-2 • E2 RX/BX/CX I&O Manual 026-1610 Rev 12 25-APR-2011
1.2 The E2 Building Con-
troller
The counterpart to the E2 RX is the E2 BX, which con-
trols HVAC systems for low-rise retail, industrial, and
commercial buildings. The BX’s primary function is to
provide energy-efficient control of air handling units
(AHUs), rooftop units (RTUs), and other systems related
to environment control. In addition, the BX provides
extensive sensor control, logging, and graphing features
that allow the user to view accurate real-time information
about system conditions. The BX is equipped with many
power monitoring and demand control features that give
you the information you need to keep your site’s energy
consumption low.
The E2 BX is available in two models: the BX-300 and
BX-400. The only significant difference between the E2
BX-300 and the E2 BX-400 is the total number of building
control devices that may be operated by a single controller.
Table 1-2 shows the differences between capabilities for
the BX-300 and BX-400.
Impulse 0 48 64
Infrared Leak Detection 1 16 16
Logging Group 8 32 32
Loop/Sequence Control 4 16 24
Modular Chiller Control 0 1 2
MultiFlex ESR 0 31 31
MRLDS 24 24 24
Performance Alert 0 63 63
Power Monitoring 1 16 16
Pulse Accumulator 0 16 16
RMS Asset 99 99 99
Standard Circuit 48 48 64
Suction Group 4 4 4
TD Condenser Fan Con-
trol 46464
TD3 Controller 0 99 99
Time Schedule 4 64 64
Capabilities RX-
100 RX- 300 RX- 400
Table 1-1 - RX-100, RX-300, and RX-400 Comparison
Capabilities BX-300 BX-400
Advanced Rooftop
Control 32 32
AHU 6 8
Analog Combiner 128 128
Analog Import Point 64 64
Analog Sensor Control 64 72
Anti-Sweat 16 48
Boiler 2 2
Control Link ACC 16 48
Control Link Case Disp 99 99
Control Link RSC 99 99
CT Drive 16 16
Demand Control 2 2
Digital Combiner 128 128
Digital Sensor Control 64 72
E2 Alarm Panel 7 7
Energy Meter 30 30
Flexible Combiner 128 128
Heat/Cool Control 16 32
Holiday Schedule 64 64
HVAC Zone 32 40
Infrared Leak Detec-
tion 16 16
Lighting Control 24 48
Logging Group 32 32
Table 1-2 - BX-300 vs. BX-400 Comparison

The E2 Convenience Store Controller Introduction • 1-3
1.3 The E2 Convenience
Store Controller
The CX controls HVAC, lighting, and refrigeration
systems for convenience store and small-box retail facili-
ties. The CX’s primary function is to provide energy-effi-
cient control of rooftop units as well as refrigeration and
defrost control of display cases and walk-in boxes. In
addition, the CX provides extensive sensor control, log-
ging, and graphing features that allow the user to view
accurate real-time information about system conditions.
The CX is equipped with many power monitoring and
demand control features that give you the information you
need to keep your site’s energy consumption low.
The E2 CX is available in three models: the CX-300,
CX-400, and CX-100. The only significant difference
between the E2 CX-300 and the E2 CX-400 is the amount
of C-Store equipment that may be operated by a single
controller. The CX-100 is a low-cost alternative to the CX-
300 with fewer capabilities and a monochrome display.
Table 1-3 shows the differences between capabilities for
the CX-300 and CX-400.
Loop/Sequence Control 16 28
MRLDS 24 24
Power Monitoring 32 64
Pulse Accumulator 32 64
RMS Asset 99 99
RCB Controller 64 64
TD Condenser Fan
Control 16 28
Time Schedule 64 64
Capabilities BX-300 BX-400
Table 1-2 - BX-300 vs. BX-400 Comparison
Capabilities CX-
100 CX- 300 CX- 400
Advanced Rooftop
Control 03232
AHU 468
Analog Combiner 64 128 128
Analog Sensor Control 12 24 48
Anti-Sweat 4 8 16
Case Control Circuit 0 12 24
CC100 Case Suction 0 99 99
CC100 Liquid Control 0 99 99
CCB 0 99 99
Condenser 0 0 1
Control Link ACC 8 16 16
Control Link Case Disp 6 99 99
Control Link RSC 10 99 99
CS100 Ckt Suction 0 99 99
CT Drive 0 16 16
Demand Control 1 1 1
Digital Combiner 64 128 128
Digital Sensor Control 12 24 48
Discus 0 0 63
E2 Alarm Panel 7 7 7
EnergyMeter 303030
Table 1-3 - CX-100, CX-300, and CX-400 Comparison

1-4 • E2 RX/BX/CX I&O Manual 026-1610 Rev 12 25-APR-2011
1.4 Networking Overview
1.4.1 E2 I/O Network
Most of the general purpose input and output commu-
nications devices required by the E2 to control refrigera-
tion systems are connected to the E2 via the I/O Network.
The I/O Network is a simple RS485 three-wire connection
that allows data interchange between input boards (which
read sensor values and digital closures), output boards
(which carry out commands from E2’s control applica-
tions), and the E2 itself.
The I/O Network is the same thing as the COM A and
COM D Networks found on Retail Solutions’ previous
generation of controllers, REFLECS. This allows current
owners of Retail Solutions’ Refrigeration Monitor and
Control (RMC) or Refrigeration Monitor and Case Control
(RMCC) controllers to easily retrofit with an E2 RX with-
out need for re-wiring.
Figure 1-2 shows the peripherals that make up the I/O
Network:
•MultiFlex - The MultiFlex line of control system
boards provide a wide variety of input, output, and
smart control solutions, all of which are based on a
Enhanced Suction
Group 004
ESR8 ESR Control 0 99 99
Flexible Combiner 64 128 128
Heat/Cool Control 4 6 8
Holiday Schedule 8 16 32
HVAC Zone 4 6 12
Infrared Leak Detec-
tion 11616
Irrigation 2 2 2
Lighting Control 6 24 48
Logging Group 8 32 32
Loop/Sequence Control 8 16 28
MultiFlex ESR 0 31 31
MRLDS 242424
Performance Alert 0 0 63
Power Monitoring 2 8 16
Pulse Accumulator 4 8 16
RCB Controller 0 32 32
RMSAsset 999999
Standard Circuit 6 12 32
Suction Group 0 0 4
TD Condenser Fan
Control 81628
TD3 Controller 0 99 99
Time Schedule 8 16 32
Capabilities CX-
100 CX- 300 CX- 400
Table 1-3 - CX-100, CX-300, and CX-400 Comparison
Figure 1-2 - E2 RX/BX I/O Network Diagram
RXE2
E2
E2 RX & BX
RS485 I/O NETWORKS
MultiFlex
I/O
MultiFlex
I/O
MultiFlex
I/O
MultiFlex
I/O
CS-100
CS-100
CC-100
CC-100
CC-100
MultiFlex
I/O
MultiFlex
I/O
MultiFlex
I/O
MultiFlex
I/O