Danfoss AK-CC 750 series, 080Z0139, 080Z0130, AK-CC 750 User Manual
Controller for evaporator control
AK-CC 750 - 080Z0130 & 080Z0139
Manual
2 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
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 204A / AK-XM 204B .....................18
Extension module AK-XM 205A / AK-XM 205B .....................20
Extension module AK-OB 101A..................................................22
Display module EKA 163B / EKA 164B ..................................... 23
Transformer module AK-PS 075 / 150 ......................................24
Case Power module ........................................................................25
Preface to design ....................................................................................26
Functions ............................................................................................26
Connections ...................................................................................... 27
Limitations ......................................................................................... 27
Design of a evaporator control ..........................................................28
Procedure: ..........................................................................................28
Sketch .................................................................................................. 28
Evaporator and refrigerator appliance functions ................28
Connections ...................................................................................... 30
Planning table .................................................................................. 31
Length .................................................................................................32
Linking of modules ......................................................................... 32
Determine the connection points ............................................33
Connection diagram ......................................................................34
Supply voltage .................................................................................35
Ordering ..................................................................................................... 36
3. Mounting and wiring .............................................................37
Mounting ................................................................................................... 38
Mounting of extension module on the basic module ....... 38
Wiring ..........................................................................................................39
4. Conguration and operation ................................................41
Conguration ...........................................................................................43
Connect PC ........................................................................................ 43
Authorization ....................................................................................44
Unlock the conguration of the controllers ..........................45
System setup ....................................................................................46
Set plant type ................................................................................... 47
Denition of thermostat ............................................................... 48
Denition of sections .....................................................................49
Denition of defrost functions ................................................... 50
Denition of common functions ............................................... 51
Conguration of inputs and outputs .......................................53
Set alarm priorities..........................................................................55
Lock conguration ..........................................................................57
Check conguration .......................................................................58
Check of connections ............................................................................ 59
Check of settings.....................................................................................60
Installation in network .......................................................................... 63
First start of control ................................................................................64
Start the control ............................................................................... 65
Setup logs .......................................................................................... 66
Manual defrost ......................................................................................... 67
5. Regulating functions .............................................................69
Introduction ..............................................................................................70
Thermostat function .............................................................................. 71
Temperature alarms ............................................................................... 75
Common functions ................................................................................ 76
Liquid injection ........................................................................................78
Defrost ........................................................................................................ 79
Miscellaneous ..........................................................................................84
Information ............................................................................................... 86
Alarm texts ................................................................................................ 88
Appendix - Recommended connection ......................................... 90
Info
AK-CC 750 - 080Z0130 and 080Z0139 are US-versions of the
standard AK-CC 750 controller.
Main changes:
• Temperature in °F
• Pressure in PSI
• Other quick setup
• Separate controls are removed
• No stepper valve connections
• 080Z0130 = LON TP 78
• 080Z0139 = LON RS 485
Software:
080Z0130: 6.0x
084Z0139: 6.1x
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 3
Application
AK-CC 750 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
• Traditional temperature regulation using on/o 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 specic 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 750 includes an adaptive defrosting function. By using
the AKV valve as mass ow 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.
1. Introduction
Evaporator control of one, two, three or four evaporators
Control of cool or frost
room
Control of cool or frost
appliance
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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
specic application – variation is created through the read-in
software and the way you choose to dene 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 nd your way through all the open questions so that the
regulation can be dened and the connections made.
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
Controller
Top part
Extension modules
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.
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.
A regulation with few connections can
be performed with the controller module
alone
If there are many connections one or more extension modules have to be mounted
Examples
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 5
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 dierent settings in one
menu will result in dierent 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” (conguration).
Network linking
The controller can be linked up into a network together with other
controllers in an ADAP-KOOL® refrigeration control system.
AK-SC 255, 355 or SM850 can be used as a system unit.
After initial setup, operation can be performed from control
system.
080Z0130 is equiped with LON TP 78
080Z0139 is equiped with LON RS 485.
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 prole 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 tted in order for P0 (Suction) and Pc
(Condensing) readings to be displayed.
In AK-CC 750 up to 4 displays can be mounted.
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■ Power
■ Comm
■ DO1 ■ Status
■ DO2 ■ Service Tool
■ DO3 ■ LON
■ DO4 ■ Alarm
■ DO5
■ DO6
■ DO7
■ DO8 ■ Service Pin
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 dene the measurements you wish
to be shown.
The collected values can be printed, or you may export them to a
le. You can open the le 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.
Alarm
The display gives you an overview of all active alarms. If you wish
to conrm that you have seen the alarm you can cross it o in the
acknowledge eld.
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 750 is equipped with an adaptive defrost function. By using
an AKV valve as mass ow 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.
Slow ash = OK
Quick ash = answer from gateway/
installed in network
Constantly ON = error
Constantly OFF = error
Flash = active alarm/not cancelled
Constant ON = Active alarm/cancelled
(In 084Z0139 the alarm LED is moved to
position 5.)
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 7
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 specic 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 sucient.
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.
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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 dened 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.
• 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 conguration
where each individual connection is dened based on the
following principle:
- to which module
- at which point (”terminals”)
- what is connected (e.g. pressure transmitter/type/
pressure range)
Top part
Controller with analog inputs and
relay outputs.
Bottom part
Extension module with additional analog inputs
Extension module with additional relay outputs and additional
analog inputs.
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.
External display
for appliance
temperature etc.
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 9
Type Analog
inputs
On/O outputs On/o supply voltage
(DI signal)
Module with
switches
For sensors, pressure transmitters
etc.
Relay
(SPDT)
Solid state Low voltage
(max. 80 V )
High voltage
(max. 260 V )
For override of relay
outputs
Controller 11 4 4 - - -
Extension modules
AK-XM 101A 8
AK-XM 102A 8
AK-XM 102B 8
AK-XM 204A 8
AK-XM 204B 8 x
AK-XM 205A 8 8
AK-XM 205B 8 8 x
Type Function Application
Operation
AK-ST 500 Software for operation of AK controllers AK-operation
- Cable between PC and AK controller AK - Com port
-
Cable between zero modem cable and AK controller /
Cable between PDA cable and AK controller
AK - RS 232
- Cable between PC and AK controller AK - USB
Accessories Transformer module 230 V / 115 V to 24 V
AK-PS 075 18 VA, 24 V d.c.
Supply for controller
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
- Cable between display and controller
Length = 6.5 ft
Length = 19.5 ft
Accessories Real time clock for use in controllers that require a clock function, but are not wired with data communication.
AK-OB 101A Real time clock with battery backup. To be mounted in an AK controller
Type Function Application
AK-CC 750 Controller for evaporator control Refrigeration appliances control
1. Controller
2. Extension modules and survey of inputs and outputs
3. AK operation and accessories
On the following pages there is data specic to each module.
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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 5 VA
Analog inputs Pt 1000 ohm /0°C Resolution: 0.1°C
Accuracy: +/- 0.5°C (between -58°F and +122°F)
PTC 1000 ohm /0°C
Pressure transmitter type AKS 32R / AKS
2050 / AKS 32 (1-5 V)
Resolution:1 mV
Accuracy +/- 10 mV
Max. connection of 5 pressure transmitters on one module
Voltage signal 0-10 V
Contact function (On/O ) On at R < 20 ohm
O at R > 2K ohm
(Gold -plated contacts not necessary)
On/o supply voltage inputs Low voltage
0 / 80 V a.c./d.c.
O: U < 2 V
On: U > 10 V
High voltage
0 / 260 V a.c.
O: U < 24 V
On: U > 80 V
Relay outputs
SPDT
AC-1 (ohmic) 4 A
AC-15 (inductive) 3 A
U Min. 24 V
Max. 230 V
Low and high voltage must not be connected to the same
output group
Solid state outputs Can be used for loads that are cut in and
out frequently, e.g. :
rail heat, fans and AKV valve
Max. 240 V a.c. , Min. 48 V a.c.
Max. 0.5 A,
Leak < 1 mA
Max. 1 AKV
Ambient temperature During transport -40 to 158°F
During operation -4 to 131°F ,
0 to 95% RH (non condensing)
No shock inuences / 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. 7 oz / 17 oz / 21 oz
Approvals EU low voltage directive and EMC require-
ments are complied with
LVD tested according to EN 60730
EMC tested
Immunity according to EN 61000-6-2
Emission according to EN 61000-6-3
UL 873,
UL le number: E166834
The mentioned data applies to all modules.
If data is specic, this is mentioned together with the module in question.
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 11
Dimensions
The module dimension is 72 mm (2.83 in).
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 mm (n x 2.83 + 0.32 in).
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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.
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 system unit, the controller’s
address must be set between 1 and 200.
Scan function
When the controller is connected to the data communication
cable the system unit must have knowledge of the new controller.
This is obtained by the scan function in the system unit. The LED
“Status” will ash fast when the system unit sends an acceptance
message.
Operation
The conguration 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 ash = OK)
• Communication with Service Tool
• Communication on LON
• Alarm when LED ashes
- 3 LED’s that are not used
• “Service Pin” switch has been activated
■ Power
■ Comm
■ DO1 ■ Status
■ DO2 ■ Service Tool
■ DO3 ■ LON
■ DO4 ■ Alarm
■ DO5
■ DO6
■ DO7
■ DO8 ■ Service Pin
PIN
Slow ash = OK
Quick ash = answer from gateway
Installation in network
Constantly ON = error
Constantly OFF = error
Flash = active alarm/not cancelled
Constant ON = Active alarm/cancelled
(In 084Z0139 the alarm LED is moved
to position 5.)
Address
Keep the safety
distance!
Low and high
voltage must not
be connected to
the same output
group
TP 78
or
RS 485
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 13
Point
Signal Signal
type
S
Pt 1000 ohm/0°C
S2,
S3
S4,
S5
Saux
Pt 1000
P
AKS 32R
AKS 2050
AKS 32
P0
Pc
Paux
AKS 32R
AKS 2050
-1 - xx bar
AKS 32
-1 - zz bar
U
...
0 - 5 V
0 - 10 V
On/O Ext.
Main
switch
Day/
Night
Door
Defrost
Active at:
Closed
/
Open
DO
AKV
Fan
Alarm
Light
Rail heat
Defrost
Night
blind
Valves
Compressor
Active at:
On
/
O
Signal Module Point
Terminal
Signal type /
Active at
1
1 (AI 1) 1 - 2
2 (AI 2) 3 - 4
3 (AI 3) 5 - 6
4 (AI 4) 7 - 8
5 (AI 5) 9 - 10
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
Terminal 15: 12 V
Terminal 16: 5 V
Terminal 27: 12 V
Terminal 28: 5 V
Terminal
17, 18, 29, 30:
(Cable screen)
Solid state outputs
on 12 - 15
Relay or AKV coil
fx 230 V a.c.
Relay outputs on
16 - 19
Analog
inputs
on 1 - 11
Point 1 2 3 4 5 6 7 8 9 10 11
Type AI1 AI2 AI3 AI4 AI5 AI6 AI7 AI8 AI9 AI10 AI11
Point 12 13 14 15 16 17 18 19
Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8
24 and 25 not
used at evaporator control
3: Brown
2: Blue
1: Black
3: Brown
2: Black
1: Red
AKV
20-23*)
*) 20 - 23: See Case
power module
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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)
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 15
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 (AI 5) 17 - 18
6 (AI 6) 19 - 20
7 (AI 7) 21 - 22
8 (AI 8) 23 - 24
Point
Signal Signal
type
S
Pt 1000 ohm/0°C
S2
S3
S4
S5
Saux
Pt 1000
P
AKS 32R
AKS 2050
AKS 32
P0
Pc
Paux
AKS 32R
AKS 2050
-1 - xx bar
AKS 32
-1 - zz bar
U
...
0 - 5 V
0 - 10 V
On/O
Ext.
Main
switch
Day/
Night
Door
Defrost
Active at:
Closed
/
Open
Point 5 6 7 8
Type AI5 AI6 AI7 AI8
Point 1 2 3 4
Type AI1 AI2 AI3 AI4
Terminal 9: 12 V
Terminal 10: 5 V
Terminal 15: 5 V
Terminal 16: 12 V
Terminal
11, 12, 13, 14:
(Cable screen)
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
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Extension module AK-XM 102A / AK-XM 102B
AK-XM 102B
Max. 230 V
On/O:
On: DI > 80 V a.c.
O: DI < 24 V a.c.
AK-XM 102A
Max. 24 V
On/O:
On: DI > 10 V a.c.
O: DI < 2 V a.c.
Function
The module contains 8 inputs for on/o 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-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 17
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
Point
Signal Active at
DI
Ext.
Main
switch
Day/
Night
Door
Defrost
Closed
(voltage on)
/
Open
(voltage o)
Point 5 6 7 8
Type DI5 DI6 DI7 DI8
Point 1 2 3 4
Type DI1 DI2 DI3 DI4
AK-XM 102A: Max. 24 V
AK-XM 102B: Max. 230 V
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Extension module AK-XM 204A / AK-XM 204B
AK-XM 204A AK-XM 204B
Max. 230 V
AC-1: max. 4 A (ohmic)
AC-15: max. 3 A (Inductive)
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
Fuses
Behind the upper part there is a fuse for each output.
Keep the safety distance!
Low and high voltage
must not be connected to
the same output group
AK-XM 204B
Override of relay
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 19
Point
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
Signal Active at
DO
Fan
Alarm
Light
Railheat
Defrost
Night
blind
Valve
Compressor
On
/
O
Point 1 2 3 4 5 6 7 8
Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8
20 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
Extension module AK-XM 205A / AK-XM 205B
max. 10 V
AK-XM 205A AK-XM 205B
Max. 230 V
AC-1: max. 4 A (ohmic)
AC-15: max. 3 A (Inductive)
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
Fuses
Behind the upper part there is a fuse for each output.
Keep the safety distance!
Low and high voltage
must not be connected to
the same output group
AK-XM 205B
Override of relay
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 21
Point
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 (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
Signal Signal
type
S
Pt 1000 ohm/0°C
S2,
S3
S4,
S5
Saux
Pt 1000
P
AKS 32R
AKS 2050
AKS 32
P0
Pc
Paux
AKS 32R
AKS 2050
-1 - xx bar
AKS 32
-1 - zz bar
U
...
0 - 5 V
0 - 10 V
On/O
Ext. Main
switch
Day/
Night
Door
Defrost
Active at:
Closed
/
Open
DO
Fan
Alarm
Light
Antisweat
Defrost
Night
blind
Valve
Compr.
Active at:
on
/
O
Terminal 9: 12 V
Terminal 10: 5 V
Terminal 21: 12 V
Terminal 22: 5 V
Terminal 11, 12, 23, 24 :
(Cable screen)
Point 9 10 11 12 13 14 15 16
Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8
Point 1 2 3 4 5 6 7 8
Type AI1 AI2 AI3 AI4 AI5 AI6 AI7 AI8
3: Brown
2: Blue
1: Black
3: Brown
2: Black
1: Red
22 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
Extension module AK-OB 101A
Function
The module is a real time clock module with battery backup.
The module can be used in controllers that are not linked up in
a data communication unit together with other controllers. The
module is used here if the controller needs battery backup for the
following functions
• Clock function
• Fixed times for day/night change-over
• Fixed defrost times
• Saving of alarm log in case of power failure
• Saving of temperature log in case of power failure
Connection
The module is provided with plug connection.
Placing
The module is placed on the PC board inside the top part.
Point
No point for a clock module to be dened – just connect it.
Working life of the battery
The working life of the battery is several years – even if there are
frequent power failures.
An alarm is generated when the battery has to be replaced.
After the alarm there are still several months of operating hours
left in the battery.
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 23
EKA 163B EKA 164B
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.
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 dened for a display module – you simply
connect it.
24 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
Transformer module AK-PS 075 / 150
AK-PS 075
AK-PS 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
Eect
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
Dimension
Type High Width
AK-PS 075 90 mm 36 mm
AK-PS 150 90 mm 54 mm
Supply to a controller
Connections
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 25
Case Power module
Point 20 21 22 23
Type ASH Light Def Fan
Relay output:
• Anti Sweat Heater
• Light
• Defrost
• Fan
If the AK-CC 750 must be connected to an existing Case Power
Module, it must be done as follows:
Connect the Case Power module via the 8-pin Molex connector.
AK-CC 750 are using the following points:
26 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
Functions
Clock function
Clock function and change-over between summer time and winter time are contained in the controller.
The clock is zeroset when there is power failure.
The clock’s setting is maintained if the controller is linked up in a
network with a gateway, a system manager or a clock module can
be mounted in the controller.
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.
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 dierence 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.
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 27
ON/OFF output signals ”DO”
There are two types, as follows:
• Relay outputs
All relay outputs are with change-over
relay so that the required function can be
obtained when the controller is without
voltage.
• Solid state outputs
Primarily for AKV valves which connect
quickly. But output can cut an external
relay in and out, as with a relay output.
The output is only found on the
controller module.
When programming the function must be set:
• Active when the output is activated
• Active when the output is not activated.
Connections
In principle there are the following types of connections:
Analog inputs ”AI”
This signal must be connected to two
terminals.
Signals can be received from the following
sources:
• Temperature signal from Pt 1000 ohm
temperature sensor
• Contact signal where the input is shortcircuited or ”opened”, respectively
• Voltage signal from 0 to 10 V
• Signal from pressure transmitter AKS 32,
AKS 32R or AKS 2050.
The supply voltage is supplied from the
module’s terminal board where there is
both a 5 V supply and a 12 V supply.
When programming the pressure transmitter’s pressure range must be set.
ON/OFF voltage inputs ”DI”
This signal must be connected to two
terminals.
• The signal must have two levels, either 0 V
or ”voltage” on the input.
There are two dierent extension
modules for this signal type:
- low-voltage signals, e.g. 24 V
- high-voltage signals, e.g. 115 V
When programming the function must be set:
• Active when the input is without voltage
• Active when voltage is applied to the
input.
Limitations
As the system is very exible regarding the number of connected
units you must check whether your selection complies with the
few limitations there are.
The complexity of the controller is determined by the software,
the size of the processor, and the size of the memory. It provides
the controller with a certain number of connections from which
data can be downloaded, and others where coupling with relays
can be performed.
The controller is not made for use on plate heat exchanger.
✔ The sum of connections cannot exceed 80.
✔ The number of extension modules must be limited so that the
total power will not exceed 32 VA (including controller).
✔ No more than 5 pressure transmitters may be connected to one
controller module.
✔ No more than 5 pressure transmitters may be connected to one
extension module.
28 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
Design of a evaporator control
Procedure:
1. Make a sketch of the system in question
2. Check that the controller’s functions cover the required
application
3. Consider the connections to be made
4. Use the planning table. / Note down the number of connections
./ add up
5. Are there enough connections on the controller module? – If
not, can they be obtained by changing an ON/OFF input signal
from voltage signal to contact signal, or will an extension
module be required?
6. Decide which extension modules are to be used
7. Check that the limitations are observed
8. Calculate the total length of modules
9. The modules are linked together
10. The connection sites are established
11. Draw a connection diagram or a key diagram
12. Size of supply voltage/transformer
1
Sketch
2
Evaporator and refrigerator appliance
functions
Make a sketch of the system in question.
Follow these 12
steps
AK-CC
750
Application
Control of cold room or freezing room x
Control of refrigeration or freezing appliances x
Regulation of evaporators 1 - 4
Thermostat function
Common thermostat function for all sections x
Thermostat function for each section x
On/o thermostat with AKV or solenoid valve x
Modulating thermostat with AKV valve x
Change between two thermostat references (thermostat band) x
Day/night switch x
Displacement of reference via analog input signal x
Thermostat sensor before or after evaporator x
Thermostat sensor both before and after the evaporator (weighted
thermostat)
x
Alarm thermostat (weighted) x
Common functions
Fan control (pulsation) x
Rail heat control (pulsation) x
Compressor control. Relay active when refrigeration is demanded x
Appliance cleaning function x
Appliance shut down x
Door contact function x
Light function x
Night blind X
Forced closing x
Alarm output x
Start / stop of regulation x
Product sensor with alarm function 4
AK-CC 750 - 080Z0130 & 080Z0139 RS8GM222 © Danfoss 10-2014 29
Day/night signal for raising the reference
The built-in week diagram can be used for raising the thermostat
reference, but it is also possible to use an external ON/OFF signal
or a signal via the network.
Product sensors
Each appliance section has a separate product sensor which can
be used for monitoring/registering the temperature.
Appliance cleaning function
A switch function with pulse pressure will activate the function
whereupon refrigeration will be stopped. The fans continue
operating.
”Later”: Next push on the switch will stop the fans.
”Still later”: Next push on the switch will restart refrigeration.
When a display is mounted at the appliance the various situations
may be followed by the readout:
Normal operation: Appliance temperature
1st push: Fan
2nd push: OFF
3rd push: Appliance temperature
Appliance shut down
Signal about shutdown can be received via data communication
or from a contact on a On/O input.
Door switch function
In freezing and coldrooms the door switch is used for switching
the light on and o, for starting and stopping the refrigeration,
and for sounding the alarm if the door has been open for a long
time
Light function
The light function can be activated by the door switch, the internal time diagram or a signal via the network.
Defrost sensor S5
On long evaporators it may be necessary to mount two sensors in
order to ensure the correct defrost of the evaporator. The sensors
are for example named S5A-1 and S5A-2.
“Inject ON” override function
The function closes expansion valves on the evaporator control
when all compressors are stopped.
The function can take place via the data communication, or it may
be wired via a relay output.
Adaptive defrost
The function requires signals from S3 and S4 as well as from
condensing pressure Pc. The expansion valve must furthermore
be type AKV.
The function cannot be used in combination with pulsation of
fans.
If you want to know more about the functions, go to
chapter 5.
A bit more about the functions
Common thermostat
The thermostat temperature can be either a weighting of the S3
and S4 sensors in section A.
Alternatively, the thermostat temperature can be a minimum
value, a maximum value or an average value of all S3 or S4 sensors
for the refrigeration sections used.
Modulating thermostat
AKV:
The function can only be used on central plant.
The opening degree of the valve is adjusted so that an accurate,
constant temperature is maintained. .
Solenoid valve:
This function can be used on both central systems and on indirect
refrigeration appliances. The valve's duty cycle is adapted so that
optimum temperature regulation is achieved on the basis of a
specic time period. The valve's duty cycle is desynchronised so
that an even load is achieved across the entire system
Changeover between two thermostat references
The function is used for appliances where contents are frequently
changed and where a dierent thermostat reference is required.
Changeover between the two references can take place by means
of a switch function.
Liquid injection
Control of AKV valves 4
Control of solenoid valves 4
Superheat regulation wit P0 and S2 measurement x
MOP control x
Refrigerant choice x
Defrost function
Electrical defrost 4
Warm Brine defrost, Hot gas defrost x
Smelt function x
Drip tray heat X
Adaptive defrost x
Defrost stop on temperature or time x
Coordinated defrost via network x
Miscellaneous
Alarm priorities x
Sensor correction x
Option for connection of separate display 4
System signals via data communication
Signal for P0-optimasation x
Night setback x
Inject ON-signal (forced closing) x
Light control x
Coordinated defrost x
Forced cooling x
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