Emerson E2 Refrigeration Control, Defrost Control, Anti-Sweat Control, Dual Temp Control, Wiring

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
11.5	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	11-19
		11.5.6.2	Application Log Report	11-19
		11.5.6.3	System Log Report	11-20
11.6 AIR HANDLING UNITS (AHU)				11-20
11.6.1		Overview		11-20
11.6.2		Temperature Control		11-20
11.6.3		Alternate Setpoints		11-20
11.6.4		Fan Control		11-21
		11.6.4.1	Single-Speed Fans	11-21
		11.6.4.2	Two-Speed Fans	11-21
		11.6.4.3	Variable-Speed Fans	11-21
11.6.5		Economizer Control		11-22
		11.6.5.1	Economization Enable	11-22
		11.6.5.2	Economization Lockout Features	11-22
11.6.6		Digital Economizer Control		11-22
11.6.7		Analog Economizer Control		11-22
11.6.8		Dehumidification Control		11-22
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

E2 RX/BX/CX I&O Manual Table of Contents • xi