Danfoss AK-PC 710 User guide

Design Guide

Capacity controller

AK-PC 710

ADAP-KOOL® Refrigeration control systems

Contents

1. Introduction ............................................................................. 3

Application .................................................................................................. 3

Function overview ............................................................................ 3

Principles...................................................................................................... 4

2. Design of the controller ..........................................................7

Module survey ........................................................................................... 8

Common data for modules .................................................................10

Controller ...........................................................................................12

Extension module AK-XM 102A / AK-XM 102B .....................14

Extension module AK-XM 204A / AK-XM 204B .....................16

Extension module AK-OB 110 ....................................................18

Extension module AK-OB 101A..................................................19

Extension module EKA 163B / EKA 164B / EKA 166 ............ 20

Power supply module AK-PS 075 ..............................................21

Select application ................................................................................... 22

General ................................................................................................ 22

Applications ...................................................................................... 22

Ordering ..................................................................................................... 33

3. Mounting and wiring .............................................................35

Mounting ................................................................................................... 36

Mounting of analog output module ........................................ 36

Mounting of extension module on the basic module ....... 37

Wiring .......................................................................................................... 38

4. Conguration and operation ................................................39

Conguration via service tool AK-ST 500 .......................................41

Connect PC or PDA ......................................................................... 41

Authorization .................................................................................... 42

Unlock the conguration of the controllers ..........................43

System setup ....................................................................................44

Set plant type ................................................................................... 45

Set control of compressors ..........................................................46

Setup control of condenser .........................................................49

Conguration of inputs and outputs .......................................50

Set alarm priorities..........................................................................52

Lock conguration ..........................................................................54

Check conguration .......................................................................55

Check of connections ............................................................................ 57

Check of settings.....................................................................................59

Schedule function .................................................................................. 61

Installation in network .......................................................................... 62

First start of control ................................................................................63

Start the control ............................................................................... 64

Manual capacity control ............................................................... 65

Quick setup ............................................................................................... 66

EKA 164, EKA 166 or AKM operation ...............................................67

5. Regulating functions .............................................................73

Suction group ..........................................................................................74

Controlling sensor...........................................................................74

Reference ...........................................................................................74

Capacity control of compressors ...............................................75

Capacity distribution methods ........................................... 76

Power pack types – compressor combinations ............77

Compressor timers ..................................................................79

Load shedding ..........................................................................80

Injection ON .............................................................................. 80

Safety functions ............................................................................... 81

Condenser ................................................................................................. 82

Capacity control of condenser ...................................................82

Reference for condensing pressure ..........................................82

Capacity distribution ..................................................................... 84

Step regulation ........................................................................................84

Speed regulation ....................................................................................84

Condenser couplings .....................................................................84

Safety functions for condenser .................................................. 85

Separate monitoring functions .........................................................85

Miscellaneous ..........................................................................................86

Appendix A – Compressor combinations and coupling pat-

terns ............................................................................................................. 89

2 Capacity controller RS8FT502 © Danfoss 08-2015 AK-PC 710

1. Introduction

Application

AK-PC 710 is a complete regulating unit for capacity control of compressors and condensers in refrigeration systems. In addition to capacity control the controllers can give signals to other controllers about the operating condition, e.g. forced closing of expansion valves, alarm signals and alarm messages.

Function overview

AK-PC 710

Application

Regulation of a compressor group x

Both compressor group and condenser group x

Regulation of compressor capacity

Regulation sensor P0

PI-regulation x

Max. number of compressor steps 6

Identical compressor capacities x

Dierent compressor capacities x

Sequential operation (rst in / last out) x

Speed regulation of 1 compressor x

Run time equalisation x

Min. restart time x

Min. On-time/ Min O time x

Suction pressure reference

Override via P0 optimization x

Override via “night setback” x

The controller’s main function is to control compressors and condensers so that operation all the time takes place at the energy-optimum pressure conditions. Both suction pressure and condensing pressure are controlled by signals from pressure transmitters. Capacity control can be carried out by suction pressure P0.

Among the dierent functions are:

- Capacity control of up to 6 compressors

- Speed control of one compressor

- One safety input for each compressor

- Option for capacity limitation to minimize consumption peaks

- When the compressor stops, signals can be transmitted to appliance controllers so that the electronic expansion valves will be closed (signal via data communication)

- Safety monitoring of high pressure / low pressure / discharge temperature

- Capacity control of up to 6 fans

- Step coupling, speed regulation or a combination

- Floating reference with regard to outside temperature

- Safety monitoring of fans

- The status of the outputs and inputs is shown by means of lightemitting diodes on the front panel

- Alarm signals can be generated directly from the controller and via data communication

- Alarms are shown with texts so that the cause of the alarm is easy to see.

- Plus some completely separate functions that are totally independent of the regulation – such monitoring of liquid level and room temperature.

Regulation of condenser capacity

Regulation sensor Pc

Step regulation x

Max. number of steps 6

Speed regulation x

Step and speed regulation x

Condenser pressure reference

Floating condensing pressure reference x

Safety functions

Min. suction pressure x

Max. suction pressure x

Max. condensing pressure x

Max. discharge gas temperature x

Min. / Max. superheat x

Safety monitoring of compressors x

Common high pressure monitoring of compressors x

Common low pressure monitoring of compressors x

Safety monitoring of condenser fans x

Monitoring of room temperature x

Monitoring of liquid level x

Monitoring of frequency converter (VSD) x

Miscellaneous

Inject On function via data communication x

Option for connection of separate display 2

Option for connection of graphic display 1

SW = 1.4

AK-PC 710 Capacity controller RS8FT502 © Danfoss 08-2015 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 specic application – variation is created through the read-in software and extension with up to 3 modules. It is the same modules that are used for each regulation and the composition can be changed, as required. With these modules (building blocks) there is up to 40 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 questions so that the regulation can be dened 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 contains 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 connections 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 must be mounted

4 Capacity controller RS8FT502 © Danfoss 08-2015 AK-PC 710

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 dierent settings in one menu will result in dierent 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 compressor regulation and the condenser 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” (conguration).

Network linking

The controller can be linked up into a 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 prole 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. The setup can be carried out on a display with control buttons. The various functions are selected via a menu system. If display of operational compressors, fans and functions is required, display type EKA 166 can be tted. Med det graske display AK-MMI kan der både foretages opsætning og udlæsning.

AK-PC 710 Capacity controller RS8FT502 © Danfoss 08-2015 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 dene 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.

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

■ DO5 ■ Alarm

■ DO6

■ DO7

■ DO8 ■ Service Pin

Slow ash = OK Quick ash = answer from gateway Constantly ON = error Constantly OFF = error

Flash = active alarm/not cancelled Constant ON = Active alarm/cancelled

Alarm

The display gives you an overview of all active alarms. If you wish to conrm 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.

6 Capacity controller RS8FT502 © Danfoss 08-2015 AK-PC 710

2. Design of the controller

This controller can be congured to one of the 40 xed applications.

• There are 20 applications with dierent numbers of compressors and condenser fans.

• The same applications can also be carried out with speed control of one compressor.

• The condenser fans can be connected in steps or speed controlled.

The selected application has xed dened connecting points. These cannot be changed.

In addition to the controller module, one or more of the following modules should be used. The selected application determines:

• Output module with relays

• Input module for registering on/o signals

• Analogue output module for controlling one or two frequency converters. One for one compressor and one for the condenser fans.

This section denes the application and which modules should be used.

AK-PC 710 Capacity controller RS8FT502 © Danfoss 08-2015 7

Module survey

• Controller module – capable of handling minor plant requirements.

• Extension modules. When the complexity 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 dened and where data communication is connected to other controllers in a bigger network.

Extension module with additional analog inputs

External display for suction pressure etc.

• 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.

• Fixed 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 be made as shown in the following diagrams.

Extension module with additional relay outputs and additional analog inputs.

Controller with analog inputs and relay outputs.

Top part

Extension module with 2x analog output signals

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 Capacity controller RS8FT502 © Danfoss 08-2015 AK-PC 710

1. Controller

Type Function Application

AK-PC 710

Controller for capacity control of up to 6 compressors and up to 6 condenser fans

Compressor / Condenser / Both

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 102A 8

AK-XM 102B 8

AK-XM 204A 8

AK-XM 204B 8 x

AK-OB 110 2

On/O outputs On/o supply voltage

Relay (SPDT)

Solid state Low voltage

(DI signal)

(max. 80 V)

High voltage (max. 260 V)

Analog outputs

0-10 V d.c. For override of

Module with switches

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 AK - Com port

- Cable between PC and AK controller AK- USB

Accessories Power supply module 230 V / 115 V to 24 V

AK-PS 075 18 VA Supply for controller

Accessories External display that can be connected to the controller module. For showing, say, the suction pressure

EKA 163B Display

EKA 164B Display with operation buttons

EKA 166 Display with operation buttons and LED's for inputs and outputs

AK-MMI Graphic display with operation

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

Cable between zero modem cable and AK controller / Cable between PDA cable and AK controller

Cable between display and controller Length = 2 m, 6 m

Cable between graphic display and controller Length = 0.8 m, 1.5 m, 3 m

AK - RS 232

On the following pages there is data specic to each module.

AK-PC 710 Capacity controller RS8FT502 © Danfoss 08-2015 9

Common data for modules

Supply voltage 24 V d.c./a.c. +/- 20%

Power consumption AK-__ (controller) 8 VA

AK-XM 102 2 VA

AK-XM 204 5 VA

Analog inputs Pt 1000 ohm /0°C Resolution: 0.1°C

Pressure transmitter type AKS 32R / AKS 32 (1-5 V)

Voltage signal 0-10 V

Contact function (On/O) On at R < 20 ohm

On/o supply voltage inputs Low voltage

Relay outputs SPDT

Solid state outputs Used for control of compressor relay Max. 240 V a.c. , Min. 48 V a.c.

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

Accuracy: +/- 0.5°C

Resolution:1 mV Accuracy +/- 10 mV Max. connection of 5 pressure transmitters on one module

O at R > 2K ohm (Gold -plated contacts not necessary)

O: U < 2 V On: U > 10 V

O: U < 24 V On: U > 80 V

Max. 230 V Low and high voltage must not be connected to the same output group

Max. 0.5 A, Leak < 1 mA

During operation -20 to 55°C ,

0 to 95% RH (non condensing) No shock inuences / vibrations

Enclosure Material PC / ABS

Class 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

UL 873,

The mentioned data applies to all modules. If data is specic, this is mentioned together with the module in question.

Capacitive load

The relays cannot be used for the direct connection of capacitive loads such as LEDs and on/o control of EC motors. All loads with a switch mode power supply must be connected with a suitable contactor or similar.

LVD tested according to EN 60730 EMC tested Immunity according to EN 61000-6-2 Emission according to EN 61000-6-3

UL le number: E166834 for XM UL le number: E31024 for PC

10 Capacity controller RS8FT502 © Danfoss 08-2015 AK-PC 710

Dimensions

AK-PC 710

AK-PC 710 + AK-XM 102

AK-PC 710 + AK-XM 204 + AK-XM 102

AK-PC 710 + AK-XM 204 + AK-XM 102 + AK-XM 102

AK-PC 710 Capacity controller RS8FT502 © Danfoss 08-2015 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.

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. (If it is a system manager AK-SM .., then 1-999).

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 ash when the gateway sends an acceptance message.

Operation

The conguration 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

Address

Keep the safety distance!

Low and high voltage must not be connected to the same output group

■ Power

■ Comm

■ DO1 ■ Status

■ DO2 ■ Service Tool

■ DO3 ■ LON

■ DO4

■ DO5 ■ Alarm

■ DO6

■ DO7

■ DO8 ■ Service Pin

Slow ash = OK Quick ash = answer from gateway Constantly ON = error Constantly OFF = error

Flash = active alarm/not cancelled Constant ON = Active alarm/cancelled

A small module (option board) can be placed on the bottom part of the controller. The module is described later in the document.

12 Capacity controller RS8FT502 © Danfoss 08-2015 AK-PC 710

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

Solid state outputs on 12 - 15

Relay fx 230 V a.c.

Signal Signal

Pt 1000 ohm/0°C

Saux1 Sc3 SS Sd

AKS 32R

3: Brown

2: Blue

1: Black

P0 Pc

AKS 32

3: Brown

2: Black

1: Red

On/O Ext.

Main switch

Day/ Night

PLP PHP LL

Comp 1-6

Fan 1

Alarm

Option Board

Please see the signal on the page with the module.

24 and 25 used only when "Option board tted"

type

Pt 1000

AKS 32R/ AKS 2050

-1 - xx bar

AKS 32

-1 - zz bar

Active at:

Closed

Open

Active at:

O

Relay outputs on 16 - 19

Point 12 13 14 15 16 17 18 19

Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8

Signal Module Point

Terminal

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

Function and terminal number is mentioned in the actual diagram

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 -

Terminal 17, 18, 29, 30: (Cable screen)

Signal type /

Active at

AK-PC 710 Capacity controller RS8FT502 © Danfoss 08-2015 13

Extension module AK-XM 102A / AK-XM 102B

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-XM 102A

Max. 24 V

On/O: On: DI > 10 V a.c. O: DI < 2 V a.c.

AK-XM 102B

Max. 230 V

On/O: On: DI > 80 V a.c. O: DI < 24 V a.c.

14 Capacity controller RS8FT502 © Danfoss 08-2015 AK-PC 710

Point

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

Day/ Night

Comp. safety 1-6

Cond.fan safety

Closed

(voltage on)

Open

(voltage o)

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

3 (2)

Function and terminal number is mentioned in the actual diagram

5 (DI 5) 9 - 10

6 (DI 6) 11 - 12

7 (DI 7) 13 - 14

8 (DI 8) 15 - 16

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

Point

Signal Active at

Fans 1

Alarm

O

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

Function and terminal number is mentioned in the actual diagram

8 (DO 8) 46 - 47 - 48

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.

Max. load I < 2.5 mA R > 4 kohm

AO AO1:

Comp.speed

AO2:

Cond.speed

0 - 10 V

Module

Point 24 25

Type AO1 AO2

AO2

AO1

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

• 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 dened – 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.

Extension module EKA 163B / EKA 164B

Function

Display of important measurements from the controller, e.g. suction pressure or condensing pressure. Setting of the individual functions can be performed by using the display with control buttons.

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, and B. A = P0 . Suction pressure in °C B = Pc. Condensing pressure in °C

EKA 166 further includes a number of LEDs to make it possible to follow individual functions.

When the controller starts up, the display will show which output 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.

EKA 163B EKA 164B

EKA 166

Module

Point - -

Type - -

Point

No point has to be dened for a display module – you simply connect it.

Graphic display AK-MMI

Function

Setting and display of values in the controller.

Connection

The display connects to the controller via a cable with plug connections. Use plug RJ45 to connect to the controller; the same plug is also used for service tool AK-ST 500.

Supply voltage

24 V a.c. / d.c. 1.5 VA.

Placing

The display can be placed at a distance of up to 3 m from the controller.

Point

No point has to be dened for a display – you simply connect it.

Power supply module AK-PS 075

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

Eect

Type Output tension Output current Power

AK-PS 075 24 V d.c. 0.75 A 18 VA

Dimension

Type High Width

AK-PS 075 90 mm 36 mm

Connections

Supply to a controller

AK-PS 075

Select application

General

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 or via an input on the controller module

Application

40 examples of application are shown in the following: Select the one that ts your system.

Wiring should be done as shown, and the controller should be set for this application.

Regarding speed regulation

An option board has 2 outputs: No. 1 is dedicated to the compressor No. 2 is dedicated to the condenser fans

If you do not use speed control, disregard the shown 0-10 V outputs.

It is only the compressor connection that is shown in all examples, but output 2 can be used for condenser fans at will.

If the speed control needs a start/stop signal, this should be taken from output "Compressor 1" or from "Fan 1".

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.

Number of compressors

2 0 1 21

3 0 5 25

4 0 9 29

5 0 13 33

6 0 17 37

Number of condenser fans

2 2 22

3 3 23

4 4 24

3 6 26

4 7 27

5 8 28

3 10 30

4 11 31

5 12 32

4 14 34

5 15 35

6 16 36

4 18 38

5 19 39

6 20 40

Speed regulation on one compressor

Yes No

Application no.

Application 1 and 21 (for 21 leave out the VSD connection on the option board)

Application 2 and 22 (for 22 leave out the VSD connection on the option board)

Application 3 and 23 (for 23 leave out the VSD connection on the option board)

Application 4 and 24 (for 24 leave out the VSD connection on the option board)

Application 5 and 25 (for 25 leave out the VSD connection on the option board)

Application 6 and 26 (for 26 leave out the VSD connection on the option board)

Application 7 and 27 (for 27 leave out the VSD connection on the option board)

Application 8 and 28 (for 28 leave out the VSD connection on the option board)

Application 9 and 29 (for 29 leave out the VSD connection on the option board)

Application 10 and 30 (for 30 leave out the VSD connection on the option board)

Application 11 and 31 (for 31 leave out the VSD connection on the option board)

Application 12 and 32 (for 32 leave out the VSD connection on the option board)

+ 64 hidden pages