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xii • Table of Contents 026-1610 Rev 13 14-SEP-2011
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
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 M
ULTIFLEX CUB BOARD.................................................................................................................................... 11-30
11.9 M
ULTIFLEX PAK BOARD.................................................................................................................................... 11-30
11.10 L
IGHTING 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 D
EMAND 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 L
OOP/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