Danfoss AK-PC 781A Manuals

Danfoss AK-PC 781A Manuals

Manuals and User Guides for Danfoss AK-PC 781A. We have 1 Danfoss AK-PC 781A manual available for free PDF download: User Manual

Danfoss AK-PC 781A User Manual

Danfoss AK-PC 781A User Manual (138 pages)

Capacity controller with recovery function

Brand: Danfoss | Category: Controller | Size: 13 MB

Table of Contents

Table of Contents
2
1 Introduction

3
- Application
  3
- Principles
  4
2 Design of a Controller

7
- Module Survey
  8
- Common Data for Modules
  10
- 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
- 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 Patterns

128
Appendix B - Alarm Texts

134
Appendix C - Recommended Connection

136

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