Table Of Contents - Danfoss AK-PC 781A User Manual

1. Introduction .............................................................................3
Application .................................................................................................. 3
Principles...................................................................................................... 4
2. Design of a controller ..............................................................7
Module survey ........................................................................................... 8
Common data for modules .................................................................10
Controller ...........................................................................................12
Extension module AK-XM 101A .................................................14
Extension module AK-XM 102A / AK-XM 102B .....................16
Extension module AK-XM 103A .................................................18
Extension module AK-XM 204A / AK-XM 204B .....................20
Extension module AK-XM 205A / AK-XM 205B .....................22
Extension module AK-XM 208C ................................................24
Extension module AK-OB 110 ....................................................26
Extension module EKA 163B / EKA 164B / EKA 166 ............27
Graphic display MMIGRS2 ............................................................27
Power supply module AK-PS 075 / 150 / 250 ........................28
Communication module AK-CM 102 .......................................29
Preface to design ....................................................................................30
Functions ............................................................................................30
Connections ......................................................................................31
Limitations .........................................................................................31
Design of a compressor and condenser control .........................32
Procedure: ..........................................................................................32
Sketch ..................................................................................................32
Compressor and condenser functions ....................................32
Connections ......................................................................................33
Planning table ..................................................................................35
Length .................................................................................................36
Linking of modules .........................................................................36
Determine the connection points ............................................37
Connection diagram ......................................................................38
Supply voltage ................................................................................40
Ordering .....................................................................................................41
3. Mounting and wiring .............................................................43
Mounting ...................................................................................................44
Mounting of analog output module ........................................44
Mounting of extension module on the basic module .......45
Wiring ..........................................................................................................46
4. Configuration and operation ................................................49
Configuration ...........................................................................................50
Connect PC ........................................................................................50
Authorization ....................................................................................52
Unlock the configuration of the controllers ..........................53
System setup ....................................................................................54
Set plant type ...................................................................................55
Set control of compressors ..........................................................56
Set oil management .......................................................................60
Setup control of condenser fans ...............................................62
Setup control of high pressure ...................................................64
Setup control of receiver pressure ............................................65
Setup control of heat recovery..................................................66
Setup Display ....................................................................................69
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Contents
Capacity controller RS8HE202 © Danfoss 2017-07
Setup Functions for General purpose ......................................70
Separate thermostats ....................................................................71
Separate pressostats ......................................................................71
Separate voltage signals ...............................................................72
Separate alarm inputs ...................................................................72
Separate PI functions .....................................................................73
Configuration of inputs and outputs .......................................74
Set alarm priorities..........................................................................76
Lock configuration ..........................................................................78
Check configuration .......................................................................79
Check of connections ............................................................................81
Check of settings.....................................................................................83
Schedule function ..................................................................................85
Installation in network ..........................................................................86
First start of control ................................................................................87
Start the control ...............................................................................88
Manual capacity control ...............................................................89
5. Regulating functions .............................................................91
Suction group ..........................................................................................92
Controlling sensor selection .......................................................92
Reference ...........................................................................................93
Capacity control of compressors ...............................................94
Capacity distribution methods ...........................................96
Power pack types - compressor combinations ............97
Compressor timers ................................................................101
Compressor with variable capacity .................................101
Load shedding ........................................................................102
Injection signal to heat exchanger control ..................103
Injection ON ............................................................................103
Liquid injection in common suction line ......................104
Safety functions .....................................................................104
Oil management............................................................................106
Condenser ...............................................................................................108
Capacity control of condenser .................................................108
Reference for condensing pressure ........................................108
Capacity distribution ...................................................................110
Step regulation ......................................................................................110
Speed regulation ..................................................................................110
Condenser couplings ...................................................................111
Safety functions for condenser ................................................111
EC motor ...........................................................................................111
CO 2 transcritical system and heat recovery ........................112
Circuit for heat recovery or hot tap water ....................113
Circuit for recovery for heating.........................................114
Circuits for control of CO2 gas pressure ........................117
Receiver control .....................................................................119
Parallel compression ............................................................120
General monitoring functions .........................................................122
Miscellaneous ........................................................................................124
Appendix A - Compressor combinations and coupling pat-
terns ...........................................................................................................128
Appendix B - Alarm texts ...................................................................134
Appendix C - Recommended connection ...................................136
AK-PC 781A