Danfoss AK-CC 750A User guide
User Guide
Controller for evaporator control
AK-CC 750A
ADAP-KOOL® Refrigeration control systems
Contents
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
Display module EKA 163B / EKA 164B ..................................... 27
Graphic display MMIGRS2 ............................................................27
Power supply module AK-PS 075 / 150 ...................................28
Communication module AK-CM 102 .......................................29
Preface to design ....................................................................................30
Functions ............................................................................................30
Connections ...................................................................................... 31
Limitations ......................................................................................... 31
Design of a evaporator control ..........................................................32
Procedure: ..........................................................................................32
Sketch .................................................................................................. 32
Evaporator and refrigerator appliance functions ................32
Connections ...................................................................................... 34
Planning table .................................................................................. 35
Length .................................................................................................36
Linking of modules ......................................................................... 36
Determine the connection points ............................................37
Connection diagram ...................................................................... 38
Supply voltage ................................................................................. 39
Ordering ..................................................................................................... 40
3. Mounting and wiring .............................................................41
Mounting ................................................................................................... 42
Mounting of extension module on the basic module ....... 42
Wiring .......................................................................................................... 43
4. Configuration and operation ................................................45
Configuration ...........................................................................................47
Connect PC ........................................................................................ 47
Authorization .................................................................................... 48
Unlock the configuration of the controllers ..........................49
System setup ....................................................................................50
Set plant type ................................................................................... 51
Definition of thermostat ............................................................... 52
Definition of sections .....................................................................53
Definition of defrost functions ................................................... 54
Definition of common functions ............................................... 55
Setup general alarm inputs ......................................................... 57
Setup separate thermostat functions ...................................... 58
Setup separate voltage functions ............................................. 59
Configuration of inputs and outputs .......................................60
Set alarm priorities..........................................................................62
Lock configuration ..........................................................................64
Check configuration .......................................................................65
Check of connections ............................................................................ 66
Check of settings.....................................................................................67
Installation in network .......................................................................... 70
First start of control ................................................................................71
Start the control ...............................................................................72
Setup logs .......................................................................................... 73
Manual defrost ......................................................................................... 74
5. Regulating functions .............................................................75
Introduction ..............................................................................................76
Thermostat function .............................................................................. 77
Temperature alarms ............................................................................... 81
Common functions ................................................................................ 82
General monitoring functions ...........................................................85
Liquid injection ........................................................................................86
Defrost ........................................................................................................ 87
Miscellaneous ..........................................................................................92
Information ............................................................................................... 95
Alarm texts ................................................................................................ 96
Appendix - Recommended connection Group 1 ........................ 98
Appendix - Recommended connection Group 2 ......................102
2 RS8HP102 © Danfoss 2018-09 AK-CC 750A
1. Introduction
Application
AK-CC 750A controllers are complete regulating units which
together with valves and sensors constitute complete evaporator
controls for refrigeration appliances and freezing rooms within
commercial refrigeration.
Generally speaking they replace all other automatic controls
containing, inter alia, day and night thermostats, defrost, fan control, rail heat control, alarm functions, light control, thermo valve
control, solenoid valve, etc.
The controller is equipped with data communication and is operated via a PC.
In addition to evaporator control the controller can give signals to
other controllers about the operating condition, e.g. forced closing of expansion valves, alarm signals and alarm messages.
Advantages
• Control of 1 to 4 evaporator sections
• Adaptive superheat control ensures optimum evaporator usage
in all operational circumstances.
• Electronic injection with AKV valve or stepper valve
• Traditional temperature regulation using on/off or modulating
control of solenoid valve for both DX and indirect brine system.
• Weighted thermostat and alarm thermostat
• Defrost on demand based on evaporator capacity
• Appliance cleaning function
• Light control using door switch or network signal depending on
day/night operation
• Rail heat pulsing depending on day/night operation or dew
point
• Monitoring of door alarm and control of light/refrigeration
depending on location of door switch.
• Log function for registration of historical parameter values and
alarm modes.
Control
The controller’s main function is to control the evaporator so that
the system constantly operates with the most energy-friendly
refrigeration.
A specific function for registration of the need for defrost will
adapt the number of defrosts so that no energy is wasted on unnecessary defrosts and subsequent cooling-down cycles.
Adaptive defrosting
The AK-CC 750A includes an adaptive defrosting function. By
using the injection valves opening degree as mass flow sensor for
the supply of refrigerant, the controller can monitor ice formation
on the evaporator. If the load is too large for the standard defrost
programme, the controller initiates additional automatic defrost
cycles to eliminate the need for expensive service calls due to
iced-up evaporators.
SW = 1.2x
Evaporator control of one, two, three or four evaporators
Control of cool or frost
room
Control of cool or frost
appliance
AK-CC 750A RS8HP102 © Danfoss 2018-09 3
Principles
The great advantage of this series of controllers is that it can
be extended as the size of the plant is increased. It has been
developed for refrigeration control systems, but not for any
specific application – variation is created through the read-in
software and the way you choose to define the connections.
It is the same modules that are used for each regulation and the
composition can be changed, as required. With these modules
(building blocks) it is possible to create a multitude of various
kinds of regulations. But it is you who must help adjusting the
regulation to the actual needs – these instructions will assist
you to find your way through all the open questions so that the
regulation can be defined and the connections made.
Controller
Top part
Advantages
• The controller’s size can “grow” as systems grow
• The software can be set for one or more regulations
• Several regulations with the same components
• Extension-friendly when systems requirements are changed
• Flexible concept:
- Controller series with common construction
- One principle – many regulation uses
- Modules are selected for the actual connection requirements
- The same modules are used from regulation to regulation
Extension modules
Bottom part
The controller is the cornerstone of the regulation. The module has inputs and
outputs capable of handling small systems.
• The bottom part – and hence the terminals – are the same for all controller types.
• The top part is the intelligence with software. This unit will vary according to controller type. But it will always be supplied together with the bottom part.
• In addition to the software the top part is provided with connection for data communication and address setting.
Examples
A regulation with few connections can
be performed with the controller module
alone
If the system grows and more functions have to be controlled, the regulation can be
extended.
With extra modules more signals can be received and more relays cut in and out –
how many of them – and which – is determined by the relevant application.
If there are many connections one or more extension modules have to be mounted
4 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Direct connection
Setup and operation of an AK controller must be accomplished via
the “AK-Service Tool” software program.
The programme is installed on a PC, and setup and operation of
the various functions are carried out via the controller’s menu
displays.
Displays
The menu displays are dynamic, so that different settings in one
menu will result in different setting possibilities in other menus.
A simple application with few connections will give a setup with
few settings.
A corresponding application with many connections will give a
setup with many settings.
From the overview display there is access to further displays for
the regulation.
At the bottom of the display there is access to a number of general
functions, such as “time table”, “manual operation”, “log function”,
“alarms”, and “service” (configuration).
Network linking
The controller can be linked up into a LON-network together with
other controllers in an ADAP-KOOL® refrigeration control system.
After the setup operation can be performed at a distance with,
say, our software program type AKM.
Users
The controller comes supplied with several languages, one of
which can be selected and employed by the user. If there are several users, they may each have their choice of language. All users
must be assigned a user profile which either gives access to full
operation or gradually limits the operation to the lowest level that
only allows you “to see”.
External display
An external display can be fitted in order to show the air temperatures around the evaporators.
In AK-CC 750A up to 4 displays can be mounted.
A graphical display with control buttons can also be fitted.
AK-CC 750A RS8HP102 © Danfoss 2018-09 5
Light-emitting diodes
A number of light-emitting diodes makes it possible to follow the
signals that are received and transmitted by the controller.
Log
From the log function you can define the measurements
you wish to be shown.
The collected values can be printed, or you may export them to a
file. You can open the file in Excel or import in AKM.
(The Log function is only available via AK-ST 500.)
If you are in a service situation you can show measurements in a
trend function. The measurements are then made real-time and
displayed instantly.
■ Power
■ Comm
■ DO1 ■ Status
■ DO2 ■ Service Tool
■ DO3 ■ LON
■ DO4 ■ I/O Extension
■ DO5 ■ Alarm
■ DO6
■ DO7 ■ Display
■ DO8 ■ Service Pin
Slow flash = OK
Quick flash = answer from gateway/
installed in network
Constantly ON = error
Constantly OFF = error
Flash = active alarm/not acknowledged
Constant ON = Active alarm/acknowledged
Alarm
The display gives you an overview of all active alarms. If you wish
to confirm that you have seen the alarm you can cross it off in the
acknowledge field.
If you want to know more about a current alarm you can click on it
and obtain an information display on the screen.
A corresponding display exists for all earlier alarms. Here you can
upload information if you need further details about the alarm
history.
Adaptive defrost
AK-CC 750A is equipped with an adaptive defrost function. By
using an AKV valve (ETS/CCMT Valve) as mass flow sensor for the
supply of refrigerant the control can monitor ice formation on the
evaporator.
Function can cancel planned defrosts which are not necessary,
and on its own initiative start a defrost if the evaporator is about
to be blocked by rime and ice.
(ETS)
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2. Design of a controller
This section describes how the controller is designed.
The controller in the system is based on a uniform connection
platform where any deviations from regulation to regulation is
determined by the used top part with a specific software and
by which input and output signals the relevant application will
require. If it is an application with few connections, the controller
module (top part with belonging bottom part) may be sufficient.
If it is an application with many connections it will be necessary to
use the controller module plus one or more extension modules.
This section will give you a survey of possible connections plus
assistance in selecting the modules required by your actual application.
AK-CC 750A RS8HP102 © Danfoss 2018-09 7
Module survey
• Controller module – capable of handling minor plant requirements.
• Extension modules. When the numbers of evaporators becomes
greater and additional inputs or outputs are required, modules
can be attached to the controller. A plug on the side of the module will transmit the supply voltage and data communication
between the modules.
• Top part
The upper part of the controller module contains the intelligence. This is the unit where the regulation is defined and where
data communication is connected to other controllers in a bigger network.
• Connection types
There are various types of inputs and outputs. One type may, for
example, receive signals from sensors and switches, another may
receive a voltage signal, and a third type may be outputs with
relays etc. The individual types are shown in the table below.
Extension module with additional analog inputs
• Optional connection
When a regulation is planned (set up) it will generate a need for
a number of connections distributed on the mentioned types.
This connection must then be made on either the controller
module or an extension module. The only thing to be observed
is that the types must not be mixed (an analog input signal must
for instance not be connected to a digital input).
• Programming of connections
The controller must know where you connect the individual
input and output signals. This takes place in a later configuration
where each individual connection is defined based on the
following principle:
- to which module
- at which point (”terminals”)
- what is connected (e.g. pressure transmitter/type/
pressure range)
Extension module with additional
relay outputs and additional analog inputs.
External display
for appliance
temperature etc.
Bottom part
Controller with analog inputs and
relay outputs.
Top part
The module with additional relay outputs is
also available in a version where the top part
is provided with change-over switches so
that the relays can be overridden.
8 RS8HP102 © Danfoss 2018-09 AK-CC 750A
1. Controller
Type Function Application
AK-CC 750A Controller for evaporator control Refrigeration appliances control
2. Extension modules and survey of inputs and outputs
Type Analog
inputs
For sensors, pressure transmitters
etc.
Controller 11 4 4 - - - -
Extension modules
AK-XM 101A 8
AK-XM 102A 8
AK-XM 102B 8
AK-XM 103A 4 4
AK-XM 204A 8
AK-XM 204B 8 x
AK-XM 205A 8 8
AK-XM 205B 8 8 x
AK-XM 208C 8 4
The following extension module can be placed on the PC board in the controller module.
There is only room for one module.
AK-OB 110 2
On/Off outputs On/off supply voltage
Relay
(SPDT)
Solid state Low voltage
(DI signal)
(max. 80 V)
High voltage
(max. 260 V)
Analoge
outputs
0 -10 V d.c. For valves
Stepper
output
with step
control
Module with
switches
For override of
relay outputs
3. AK operation and accessories
Type Function Application
Operation
AK-ST 500 Software for operation of AK controllers AK-operation
- Cable between PC and AK controller USB-A — USB-B (standard IT cable)
Accessories Power supply module 230 V / 115 V to 24 V
AK-PS 075 18 VA, 24 V d.c.
AK-PS 150 36 VA, 24 V d.c.
Accessories External display that can be connected to the controller module. For showing, say, the refrigeration appliances
EKA 163B Display
EKA 164B Display with operation buttons
MMIGRS2 Graphic display with operation buttons
- Cable between EKA display and controller Length = 2 m, 6 m
- Cable between graphic display and controller Length = 1,5 m, 3 m
Accessories Communication modules for controllers where modules cannot be connected continuously
AK-CM 102 Communication module
Supply for controller
Data communication for external extension modules
On the following pages there is data specific to each module.
AK-CC 750A RS8HP102 © Danfoss 2018-09 9
Common data for modules
Supply voltage 24 V d.c. / a.c. +/- 20%
Power consumption AK-__ (controller) 8 VA
AK-XM 101, 102, 103 2 VA
AK-XM 204, 205, 208 5 VA
Analog inputs Pt 1000 ohm /0°C Resolution: 0.1°C
PTC 1000 ohm /0°C
Pressure transmitter type AKS 32R / AKS
2050 / AKS 32 (1-5 V)
Voltage signal 0-10 V
Contact function (On/Off ) On at R < 20 ohm
On/off supply voltage inputs Low voltage
Relay outputs
SPDT
Solid state outputs Can be used for loads that are cut in and
Stepper outputs Used for valves with stepper input 20-500 step/s
Ambient temperature During transport -40 to 70°C
0 / 80 V a.c./d.c.
High voltage
0 / 260 V a.c.
AC-1 (ohmic) 4 A
AC-15 (inductive) 3 A
U Min. 24 V
out frequently, e.g. :
rail heat, fans and AKV valve
Accuracy:
+/- 0.5°C (between -50°C and +50°C)
+/- 1°C between -100°C and -50°C
+/- 1°C between +50°C and +130°C
Resolution:1 mV
Accuracy +/- 10 mV
Max. connection of 5 pressure transmitters on one module
Off at R > 2K ohm
(Gold -plated contacts not necessary)
Off: U < 2 V
On: U > 10 V
Off: U < 24 V
On: U > 80 V
Max. 230 V
Low and high voltage must not be connected to the same
output group
Max. 240 V a.c. , Min. 48 V a.c.
Max. 0.5 A,
Leak < 1 mA
Max. 1 AKV
Separate supply to stepper outputs : 24 a.c./d.c./ xx VA
During operation -20 to 55°C ,
0 to 95% RH (non condensing)
No shock influences / vibrations
Enclosure Material PC / ABS
Density IP10 , VBG 4
Mounting For mounting on panel wall or DIN rail
Weight with screw terminals modules in100- / 200- / controller-series Ca. 200 g / 500 g / 600 g
Approvals EU low voltage directive and EMC require-
ments are complied with
The mentioned data applies to all modules.
If data is specific, this is mentioned together with the module in question.
LVD tested according to EN 60730
EMC tested
Immunity according to EN 61000-6-2
Emission according to EN 61000-6-3
E31024 for CC-module
E357029 for XM and CM-modules
10 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Dimensions
The module dimension is 72 mm.
Modules in the 100-series consist of one
module
Modules in the 200-series consist of two
modules
Controllers consist of three modules
The length of an aggregate unit = n x 72 + 8
AK-CC 750A RS8HP102 © Danfoss 2018-09 11
Controller
Function
There are several controllers in the series. The function is determined by the programmed software, but outwardly the controllers are identical – they all have the same connection possibilities:
11 analog inputs for sensors, pressure transmitters, voltage signals
and contact signals.
8 digital outputs, with 4 Solid state outputs and 4 relay outputs
Supply voltage
24 V a.c. or d.c. to be connected to the controller.
The 24 V must not be retransmitted and used by other controllers as it is not galvanically separated from inputs and outputs. In
other words, you must use a transformer for each controller. Class
II is required. The terminals must not be earthed.
The supply voltage to any extension modules is transmitted via
the plug on the right-hand side.
The size of the transformer is determined by the power requirement of the total number of modules.
The supply voltage to a pressure transmitter can be taken either
from the 5 V output or from the 12 V output depending on transmitter type.
PIN
Data communication
If the controller is to be included in a system, communication must take place via the LON connection.
The installation has to be made as mentioned in the separate instructions for LON communication.
Address setting
When the controller is connected to a gateway type AKA 245,
the controller’s address must be set between 1 and 119. (1-200 at
AK-SM..).
Service PIN
When the controller is connected to the data communication cable the gateway must have knowledge of the new controller. This
is obtained by pushing the key PIN. The LED “Status” will flash fast
when the gateway sends an acceptance message.
Operation
The configuration operation of the controller must take place from
the software programme “Service Tool”. The program must be
installed on a PC, and the PC must be connected to the controller
via the network plug on the front of the unit.
Light-emitting diodes
There are two rows with LED’s. They mean:
Left row:
• Voltage supply to the controller
• Communication active with the bottom PC board (red = error)
• Status of outputs DO1 to DO8
Right row:
• Software status (slow flash = OK)
• Communication with Service Tool
• Communication on LON
• Communication with AK-CM 102
• Alarm when LED flashes
- 1 LED that is not used
• Communication with display on RJ11 plug
• “Service Pin” switch has been activated
Address
■ Power
■ Comm
■ DO1 ■ Status
■ DO2 ■ Service Tool
■ DO3 ■ LON
■ DO4 ■ I/O Extension
■ DO5 ■ Alarm
■ DO6
■ DO7 ■ Display
■ DO8 ■ Service Pin
Keep the safety
distance!
Low and high
voltage must not
be connected to
the same output
group
Slow flash = OK
Quick flash = answer from gateway
Installation in network
Constantly ON = error
Constantly OFF = error
Flash = active alarm/not cancelled
Constant ON = Active alarm/cancelled
12 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Point
Point 1 2 3 4 5 6 7 8 9 10 11
Type AI1 AI2 AI3 AI4 AI5 AI6 AI7 AI8 AI9 AI10 AI11
Terminal 15: 12 V
Terminal 16: 5 V
Terminal 27: 12 V
Terminal 28: 5 V
Analog
inputs
on 1 - 11
Terminal
17, 18, 29, 30:
(Cable screen)
The screen on the pressure
transmitter cables must
only be connected at the
end of the controller.
Relay outputs on
16 - 19
Solid state outputs
on 12 - 15
Relay or AKV coil
fx 230 V a.c.
24 and 25 used
only when "Option board fitted"
Point 12 13 14 15 16 17 18 19
Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8
Signal Signal
type
S
Pt 1000 ohm/0°C
S2,
S3
S4,
Pt 1000
S5
Saux
P
AKS 32R
AKS 2050
AKS 32
U
3: Brown
2: Blue
1: Black
3: Brown
2: Black
1: Red
P0
Pc
Paux
...
AKS 32R
AKS 2050
MBS 8250
-1 - xx bar
AKS 32
-1 - zz bar
0 - 5 V
0 - 10 V
Signal Module Point
1 (AI 1) 1 - 2
2 (AI 2) 3 - 4
3 (AI 3) 5 - 6
Terminal
Signal type /
Active at
4 (AI 4) 7 - 8
5 (AI 5) 9 - 10
On/Off Ext.
Main
switch
Day/
Night
Door
Defrost
DO
AKV
AKV
Fan
Alarm
Light
Rail heat
Defrost
Night
blind
Valves
Compressor
Option Board
Please see the signal
on the page with the
module.
Active at:
Closed
/
Open
1
Active at:
On
/
Off
6 (AI 6) 11 - 12
7 (AI 7) 13 - 14
8 (AI 8) 19 - 20
9 (AI 9) 21 - 22
10 (AI 10) 23 - 24
11 (AI 11) 25 - 26
12 (DO 1) 31 - 32
13 (DO 2) 33 - 34
14 (DO 3) 35 - 36
15 (DO 4) 37 - 38
16 (DO 5) 39 - 40- 41
17 (DO6) 42 - 43 - 44
18 (DO7) 45 - 46 - 47
19 (DO8) 48 - 49 - 50
24 -
25 -
AK-CC 750A RS8HP102 © Danfoss 2018-09 13
Extension module AK-XM 101A
Function
The module contains 8 analog inputs for sensors, pressure
transmitters, voltage signals and contact signals.
Supply voltage
The supply voltage to the module comes from the previous module in the row.
Supply voltage to a pressure transmitter can be taken from either
the 5 V output or the 12 V output depending on transmitter type.
Light-emitting diodes
Only the two top LED’s are used. They indicate the following:
• Voltage supply to the module
• Communication with the controller is active (red = error)
14 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Point
Point 1 2 3 4
Type AI1 AI2 AI3 AI4
Terminal 9: 12 V
Terminal 10: 5 V
S
Pt 1000 ohm/0°C
P
AKS 32R
AKS 2050
AKS 32
At the top the
signal input is
the left of the
two terminals.
At the bottom
the signal input
is the right of the
two terminals.
3: Brown
2: Blue
1: Black
3: Brown
2: Black
1: Red
Signal Signal
type
S2
S3
S4
Pt 1000
S5
Saux
AKS 32R
AKS 2050
P0
Pc
MBS 8250
-1 - xx bar
Paux
AKS 32
-1 - zz bar
Terminal 15: 5 V
Terminal 16: 12 V
Terminal
11, 12, 13, 14:
(Cable screen)
The screen on the pressure
transmitter cables must only
be connected at the end of the
controller.
Point 5 6 7 8
Type AI5 AI6 AI7 AI8
U
On/Off
...
Ext.
Main
switch
Day/
Night
Door
Defrost
0 - 5 V
0 - 10 V
Active at:
Closed
/
Open
Signal Module Point
1 (AI 1) 1 - 2
2 (AI 2) 3 - 4
3 (AI 3) 5 - 6
4 (AI 4) 7 - 8
5 (AI 5) 17 - 18
6 (AI 6) 19 - 20
7 (AI 7) 21 - 22
8 (AI 8) 23 - 24
Terminal
Signal type /
Active at
AK-CC 750A RS8HP102 © Danfoss 2018-09 15
Extension module AK-XM 102A / AK-XM 102B
Function
The module contains 8 inputs for on/off voltage signals.
Signal
AK-XM 102A is for low voltage signals.
AK-XM 102B is for high voltage signals.
Supply voltage
The supply voltage to the module comes from the previous module in the row.
Light-emitting diodes
They indicate:
• Voltage supply to the module
• Communication with the controller is active (red = error)
• Status of the individual inputs 1 to 8 (when lit = voltage)
AK-XM 102A
Max. 24 V
On/Off:
On: DI > 10 V a.c./d.c.
Off: DI < 2 V a.c./d.c.
AK-XM 102B
Max. 230 V
On/Off:
On: DI > 80 V a.c.
Off: DI < 24 V a.c.
16 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Point
DI
Point 1 2 3 4
Type DI1 DI2 DI3 DI4
Point 5 6 7 8
Type DI5 DI6 DI7 DI8
Signal Active at
AK-XM 102A: Max. 24 V
AK-XM 102B: Max. 230 V
Ext.
Main
switch
Day/
Night
Door
Defrost
Closed
(voltage on)
/
Open
(voltage off)
(The module can not register a pulse signal from e.g. a
reset function or a case cleaning function.)
Signal Module Point Terminal Active at
1 (DI 1) 1 - 2
2 (DI 2) 3 - 4
3 (DI 3) 5 - 6
4 (DI 4) 7 - 8
5 (DI 5) 9 - 10
6 (DI 6) 11 - 12
7 (DI 7) 13 - 14
8 (DI 8) 15 - 16
AK-CC 750A RS8HP102 © Danfoss 2018-09 17
Extension module AK-XM 103A
Function
The module contains :
4 analog inputs for sensors, pressure transmitters, voltage signals
and contact signals.
4 analog voltage outputs of 0 - 10 V
Supply voltage
The supply voltage to the module comes from the previous
module in the row.
Supply voltage to a pressure transmitter can be taken from either
the 5 V output or the 12 V output depending on transmitter type.
Galvanic isolation
The inputs are galvanically separated from the outlets.
The outlets AO1 and AO2 are galvanically separated from AO3 and
AO4.
Light-emitting diodes
Only the two top LED’s are used. They indicate the following:
• Voltage supply to the module
• Communication with the controller is active (red = error)
Max. load
I < 2.5 mA
R > 4 kΩ
18 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Point
At the top the
signal input is
the left of the
two terminals.
At the bottom
the signal input
is the right of the
two terminals.
Point 1 2 3 4
Type AI1 AI2 AI3 AI4
Terminal 9: 12 V
Terminal 10: 5 V
Terminal
11, 12:
(Cable screen)
The screen on the pressure
transmitter cables must only
be connected at the end of the
controller.
Galvanic isolation:
AI 1-4 ≠ AO 1-2 ≠ AO 3-4
Signal Signal
S
Pt 1000 ohm/0°C
S2
S3
S4
S4
S5
Saux
P
AKS 32R
AKS 32
3: Brown
2: Blue
1: Black
3: Brown
2: Black
1: Red
P0
Paux
U
...
On/Off Ext.
Main
switch
Day/
Night
Door
Level
switch
AO
type
Pt 1000
AKS 32R /
AKS 2050
MBS 8250
-1 - xx bar
AKS 32
-1 - zz bar
0 - 5 V
0 - 10 V
Active at:
Closed
/
Open
Point 5 6 7 8
Type AO1 AO2 AO3 AO4
Signal Module Point Terminal Signal type /Active at
1 (AI 1) 1 - 2
2 (AI 2) 3 - 4
3 (AI 3) 5 - 6
4 (AI 4) 7 - 8
5 (AO 1) 17 - 18
6 (AO 2) 19 - 20
7 (AO 3) 21 - 22
8 (AO 4) 23 - 24
0-10 V
AK-CC 750A RS8HP102 © Danfoss 2018-09 19
Extension module AK-XM 204A / AK-XM 204B
Function
The module contains 8 relay outputs.
Supply voltage
The supply voltage to the module comes from the previous module in the row.
AK-XM 204B only
Override of relay
Eight change-over switches at the front make it possible to override the relay’s function.
Either to position OFF or ON.
In position Auto the controller carries out the control.
Light-emitting diodes
There are two rows with LED’s. They indicate the following:
Left row:
• Voltage supply to the controller
• Communication active with the bottom PC board (red = error)
• Status of outputs DO1 to DO8
Right row: (AK-XM 204B only):
• Override of relays
ON = override
OFF = no override
AK-XM 204A AK-XM 204B
Fuses
Behind the upper part there is a fuse for each output.
Max. 230 V
AC-1: max. 4 A (ohmic)
AC-15: max. 3 A (Inductive)
AK-XM 204B
Override of relay
Keep the safety distance!
Low and high voltage
must not be connected to
the same output group
20 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Point
DO
Signal Active at
Fan
Alarm
Light
Railheat
Defrost
Night
blind
Valve
Compressor
On
/
Off
Point 1 2 3 4 5 6 7 8
Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8
Signal Module Point Terminal Active at
1 (DO 1) 25 - 27
2 (DO 2) 28 - 30
3 (DO 3) 31 - 33
4 (DO 4) 34 -36
5 (DO 5) 37 - 39
6 (DO 6) 40 - 41 - 42
7 (DO 7) 43 - 44 - 45
8 (DO 8) 46 - 47 - 48
AK-CC 750A RS8HP102 © Danfoss 2018-09 21
Extension module AK-XM 205A / AK-XM 205B
Function
The module contains:
8 analog inputs for sensors, pressure transmitters, voltage signals
and contact signals.
8 relay outputs.
Supply voltage
The supply voltage to the module comes from the previous module in the row.
AK-XM 205B only
Override of relay
Eight change-over switches at the front make it possible to override the relay’s function.
Either to position OFF or ON.
In position Auto the controller carries out the control.
Light-emitting diodes
There are two rows with LED’s. They mean:
Left row:
• Voltage supply to the controller
• Communication active with the bottom PC board (red = error)
• Status of outputs DO1 to DO8
Right row: (AK-XM 205B only):
• Override of relays
ON = override
OFF = no override
AK-XM 205A AK-XM 205B
max. 10 V
Fuses
Behind the upper part there is a fuse for each output.
Max. 230 V
AC-1: max. 4 A (ohmic)
AC-15: max. 3 A (Inductive)
AK-XM 205B
Override of relay
Keep the safety distance!
Low and high voltage
must not be connected to
the same output group
22 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Point
S
Pt 1000 ohm/0°C
Signal Signal
type
S2,
S3
S4,
Pt 1000
S5
Saux
Point 1 2 3 4 5 6 7 8
Type AI1 AI2 AI3 AI4 AI5 AI6 AI7 AI8
Terminal 9: 12 V
Terminal 10: 5 V
Terminal 21: 12 V
Terminal 22: 5 V
Terminal 11, 12, 23, 24 :
(Cable screen)
The screen on the pressure
transmitter cables must only
be connected at the end of the
controller.
Point 9 10 11 12 13 14 15 16
Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8
P
AKS 32R
AKS 2050
AKS 32
U
On/Off
DO
3: Brown
2: Blue
1: Black
3: Brown
2: Black
1: Red
P0
Pc
Paux
...
Ext. Main
switch
Day/
Night
Door
Defrost
Fan
Alarm
Light
Rail heat
Defrost
Night
blind
Valve
Compr.
AKS 32R
AKS 2050
MBS 8250
-1 - xx bar
AKS 32
-1 - zz bar
0 - 5 V
0 - 10 V
Active at:
Closed
/
Open
Active at:
on
/
Off
Signal Module Point
1 (AI 1) 1 - 2
2 (AI 2) 3 - 4
3 (AI 3) 5 - 6
4 (AI 4) 7 - 8
5 (AI 5) 13 - 14
6 (AI 6) 15 - 16
7 (AI 7) 17 - 18
8 (AI 8) 19 -20
9 (DO 1) 25 - 26 - 27
10 (DO 2) 28 - 29 - 30
11 (DO 3) 31 - 30 - 33
12 (DO 4) 34 - 35 - 36
13 (DO 5) 37 - 36 - 39
14 (DO6) 40 - 41 - 42
15 (DO7) 43 - 44 - 45
16 (DO8) 46 - 47 - 48
Terminal
Signal type /
Active at
AK-CC 750A RS8HP102 © Danfoss 2018-09 23
Extension module AK-XM 208C
Function
The module contains:
8 analog inputs for sensors, pressure transmitters, voltage signals
and contact signals.
4 outputs for stepper motors.
Supply voltage
The supply voltage to the module comes from the previous module in the row. Here supplied with 5 VA.
The supply voltage to the valves must be from a separate supply,
which must be galvanically separated from the supply for the
control range.
(Power requirements: 7.8 VA for controller + xx VA per valve).
Separate voltage
supply is required
A UPS may be necessary if the valves need to open/close during a
power failure.
Light-emitting diodes
There is one row with LED’s. It indicate the following:
• Voltage supply to the module
• Communication active with the bottom PC board (red = error)
• Step1 to step4 OPEN: Green = Open
• Step1 to step4 CLOSE: Green = Close
• Red flash = Error on motor or connection
24 V d.c. Fx. 13 VA
max. 10 V
L = max. 30 m
Output:
24 V d.c.
20-500 step/s
Max phase current = 325 mA RMS
∑ P
= max. 21 VA
out
The connection to the valve must not
be broken using a relay
Valve data
Type P
ETS 12.5 - ETS 400
KVS 15 - KVS 42
CCMT 2 - CCMT 8
CCM 10 - CCM 40
CTR 20
CCMT 16 - CCMT 42 5.1 VA
1.3 VA
Power supply to AK-XM 208C:
Fx: 7.8 + (4 x 1.3) = 13 VA AK-PS 075
Fx: 7.8 + (4 x 5.1) = 28.2 VA AK-PS 150
24 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Point
CCMT
Step /
Terminal
ETS
CCM / CCMT
CTR
KVS
Point 1 2 3 4 5 6 7 8
Type AI1 AI2 AI3 AI4 AI5 AI6 AI7 AI8
Terminal 17: 12 V
Terminal 18: 5 V
Terminal 19, 20:
(Cable screen)
The screen on the pressure
transmitter cables must only
be connected at the end of
the controller.
Point 9 10 11 12
Step 1 2 3 4
Type AO
1 25 26 27 28
2 29 30 31 32
3 33 34 35 36
4 37 38 39 40
White Black Red Green
Valve Module Step Terminal
1 (point 9) 25 - 28
2 (point 10) 29 - 32
3 (point 11) 33 - 36
4 (point 12) 37 - 40
AK-CC 750A RS8HP102 © Danfoss 2018-09 25
Extension module AK-OB 110
Function
The module contains two analog voltage outputs of 0 – 10 V.
Supply voltage
The supply voltage to the module comes from the controller
module.
Placing
The module is placed on the PC board in the controller module.
Point
The two outputs have points 24 and 25. They are shown on the
earlier page where the controller is also mentioned.
Galvanic isolation
The outlets AO1 and AO2 are galvanically separated from the
controller module, but not from each other.
Max. load
I < 2.5 mA
R > 4 kohm
AO
AO 0 - 10 V
Module
Point 24 25
Type AO1 AO2
1
AO2
AO1
26 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Display module EKA 163B / EKA 164B
Function
Display of important measurements from the controller, e.g.
appliance temperature.
Setting of the individual functions can be performed by using the
display with control buttons.
It is the controller used that determines the measurements and
settings that can occur.
Connection
The extension module is connected to the controller module via
a cable with plug connections. You have to use one cable per
module. The cable is supplied in various lengths.
Both types of display (with or without control buttons) can be
connected to either display output A, B, C and D.
When the controller starts up, the display will show the output
that is connected.
- - 1 = output A
- - 2 = output B
etc.
EKA 163B EKA 164B
Placing
The extension module can be placed at a distance of up to 15 m
from the controller module.
Point
No point has to be defined for a display module – you simply
connect it.
Graphic display MMIGRS2
Function
Setting and display of values in the controller.
Connection
The display connects to the controller via a cable with RJ11 plug
connections.
Supply voltage
Received from the controller via cable and RJ11 connector.
Termination
The display must be terminated. Mount a connection between the
terminals H and R.
(AK-CC 750A is terminated internally.)
Placing
The display can be placed at a distance of up to 3 m from the
controller.
Point / Address
No point has to be defined for a display – you simply connect it.
However, the address must be verified. See the instructions accompanying the controller.
AK-CC 750A RS8HP102 © Danfoss 2018-09 27
Power supply module AK-PS 075 / 150
Function
24 V supply for controller.
Supply voltage
230 V a.c or 115 V a.c. (from 100 V a.c. to 240 V a.c.)
Placing
On DIN-rail
Effect
Type Output tension Output current Power
AK-PS 075 24 V d.c. 0.75 A 18 VA
AK-PS 150 24 V d.c.
(adjustable)
1.5 A 36 VA
Class II
Dimension
Type High Width
AK-PS 075 90 mm 36 mm
AK-PS 150 90 mm 54 mm
Supply to a controller
Connections
AK-PS 075
AK-PS 150
28 RS8HP102 © Danfoss 2018-09 AK-CC 750A
Communication module AK-CM 102
Function
The module is a new communication module, meaning the row of
extension modules can be interrupted.
The module communicates with the regulator via data communication and forwards information between the controller and the
connected extension modules.
Connection
Communication module and controller fitted with RJ 45 plug connectors.
Nothing else should be connected to this data communication; a
maximum of 5 communication modules can be connected to one
controller.
Communication cable
One metre of the following is enclosed:
ANSI/TIA 568 B/C CAT5 UTP cable w/ RJ45 connectors.
Positioning
Max. 30 m from the controller
(The total length of the communication cables is 30 m)
Max. 32 VA
Supply voltage
24 volt AC or DC should be connected to the communication
module.
The 24 V can be sourced from the same supply that supplies the
controller. (The supply for the communication module is galvanically separated from the connected extension modules).
The terminals must not be earthed.
The power consumption is determined by the power consumption of the total number of modules.
The controller strand load must not exceed 32 VA.
Each AK-CM 102 strand load must not exceed 20 VA.
Point
Connection points on the I/O modules should be defined as if the
modules were an extension of each other.
Address
The address for the first communication module should be set to
1. Any second module should be set to 2. A maximum of 5 modules can be addressed.
Termination
The termination switch on the final communication module
should be set to ON.
The controller should permanently be set to = ON.
Warning
Additional modules may only be installed following the installation of the final module. (Here following module no. 11; see the
sketch.)
After configuration, the address must not be changed.
Max. 20 VA
Max. 20 VA
AK-CC 750A RS8HP102 © Danfoss 2018-09 29
Preface to design
Be aware of the following when the number of extension modules
is being planned. A signal may have to be changed, so that an additional module may be avoided.
• An ON/OFF signal can be received in two ways. Either as a
contact signal on an analog input or as voltage on a low or highvoltage module.
• An ON/OFF output signal can be given in two ways. Either with
a relay switch or with solid state. The primary difference is the
permitted load and that the relay switch contains a cutout
switch.
Mentioned below is a number of functions and connections that
may have to be considered when a regulation has to be planned.
There are more functions in the controller than the ones mentioned here, but those mentioned have been included in order
that the need for connections can be established.
Functions
Clock function
Clock function and change-over between summer time and winter time are contained in the controller.
The clock setting is maintained for at least 12 hours at a power
failure.
The clock setting is kept updated if the controller is linked up in a
network with a system manager.
Start/stop of regulation
Regulation can be started and stopped via the software. External
start/stop can also be connected.
Alarm function
If the alarm is to be sent to a signal transmitter, a relay output will
have to be used.
Extra temperature sensors and pressure sensors
If additional measurements have to be carried out beyond the
regulation, sensors can be connected to the analog inputs.
Forced control
The software contains a forced control option. If an extension
module with relay outputs is used, the module’s top part can be
with change-over switches – switches that can override the individual relays into either OFF or ON position.
Data communication
The controller module has terminals for LON data communication.
The requirements to the installation are described in a separate
document. Literature number RC8AC.
30 RS8HP102 © Danfoss 2018-09 AK-CC 750A
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