Emerson E2 Manuel D’Utilisation

Emerson

E2 RX/BX/CX I&O Manual

Table of Contents • xi

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

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

............................................................................................................................................... 11-16

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

(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

................................................................................................................................................... 11-25

11.7.1 Overview ...................................................................................................................................................... 11-25