Hitachi 8E042340, Руководство по обслуживанию

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2. Control Functions
SMGB0097 rev.0 - 07/2015
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2
2 .
C o n t r o l F u n c t i o n s
Index
2.1 Control functions on the module ..............................................................................................................6
2.1.1 Water control ................................................................................................................................................... 9
2.1.2 Water temperature control ............................................................................................................................. 10
2.1.3 Compressor Control ...................................................................................................................................... 13
2.1.4 Control for recovery from power interruption (Option) ................................................................................... 15
2.1.5 Prevention of simultaneous startup ............................................................................................................... 16
2.1.6 Reverse prevention control ........................................................................................................................... 16
2.1.7 Anti-Freezing Control for Winter .................................................................................................................... 17
2.1.8 Control for prevention of wrong operation and wrong settings ...................................................................... 20
2.1.9 Demand control ............................................................................................................................................. 20
2.1.10 Forced load up capacity control from external signal .................................................................................. 23
2.1.11 2-temperature setting function ..................................................................................................................... 24
2.1.12 External thermo operation from external contact ........................................................................................ 25
2.1.13 Water Temperature of the Control Target .................................................................................................... 27
2.1.14 Operation from DC24V contact input .......................................................................................................... 28
2.1.15 Thermo OFF function selection ................................................................................................................... 33
2.1.16 Selection of enabling/disabling of alarm release by means of remote stop ................................................ 34
2.1.17 Limitation setting for pump feedback waiting time ....................................................................................... 35
2.1.18 Inlet water temperature thermo OFF function ............................................................................................. 36
2.2 Control of the cooling cycle ...................................................................................................................38
2.2.1 Compressor Control ...................................................................................................................................... 38
2.2.2 Expansion Valve Control ............................................................................................................................... 39
2.2.3 Overcurrent protection control ....................................................................................................................... 41
2.3 Control of Master/Slave group...............................................................................................................42
2.3.1 Summary of control of Master/Slave group ................................................................................................... 42
2.3.2 Setting method .............................................................................................................................................. 42
2.3.3 Operation method .......................................................................................................................................... 43
2.3.4 Other functions of the control of Master/Slave group .................................................................................... 45
2.3.5 Setting items .................................................................................................................................................. 47
2.3.6 Method for setting and confirmation of operation conditions through the LCD screen .................................. 48
2.4 Run operation ........................................................................................................................................50
2.4.1 Setting of switches on the setting PCB ......................................................................................................... 50
2.4.2 Operation control of the module .................................................................................................................... 51
2.5 Time chart .............................................................................................................................................52