Table of Contents
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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
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 MT compressors ...................................................56
Set control of LT compressors .....................................................60
Setup control of condenser fans ...............................................61
Setup control of high pressure ...................................................63
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Contents
Capacity controller RS8HF102 © Danfoss 2017-07
Setup control of receiver pressure ............................................64
Setup control of heat recovery..................................................65
Setup Display ....................................................................................66
Setup Functions for General purpose ......................................67
Separate thermostat...............................................................68
Separate pressostat ................................................................68
Separate voltage signal .........................................................69
Separate alarm inputs ............................................................69
Separate PI function ...............................................................70
Configuration of inputs and outputs .......................................71
Set alarm priorities..........................................................................73
Lock configuration ..........................................................................75
Check configuration .......................................................................76
Check of connections ............................................................................78
Check of settings.....................................................................................80
Schedule function ..................................................................................82
Installation in network ..........................................................................83
First start of control ................................................................................84
Start the control ...............................................................................85
Manual capacity control ...............................................................86
5. Regulating functions .............................................................87
Suction groups ........................................................................................88
Controlling sensor...........................................................................88
Reference ...........................................................................................88
Capacity control of compressors ...............................................89
Capacity distribution methods ...........................................90
Power pack types - compressor combinations ............91
Compressor timers ..................................................................95
Compressor with variable capacity ...................................96
Load shedding ..........................................................................97
Injection ON ..............................................................................97
Liquid injection in common suction line ........................98
Safety functions ...............................................................................98
Condenser / Gas cooler ......................................................................100
Capacity control of condenser .................................................100
Reference for condensing pressure ........................................100
Heat recovery .................................................................................102
Capacity distribution ...................................................................104
EC motor ...........................................................................................104
Step regulation .......................................................................104
Speed regulation ...................................................................104
Condenser couplings ...........................................................105
Safety functions for condenser.........................................105
Circuits for control of CO2 gas pressure ................................106
Receiver control .....................................................................107
Parallel compression ............................................................108
General monitoring functions .........................................................109
Miscellaneous ........................................................................................111
Appendix - Alarm texts .......................................................................116
AK-PC 772A
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