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AK-PC 781A
Danfoss AK-PC 781A User Manual
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AK-PC 781A
Capacity
controller RS8HE202 © Danf
oss 2017-07
77
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5. Set alarm priorities for thermostat and extra digital
signals
Configuration - con
tinued
In our example we select the settings shown here in the display
76
78
Table of Contents
Default Chapter
2
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
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
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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Danfoss AK-PC 781A Specifications
General
Brand
Danfoss
Model
AK-PC 781A
Category
Controller
Language
English
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