Danfoss AK-SM 720 User guide

User Guide

Network control

AK-SM 720

ADAP-KOOL® Refrigeration control systems

www.danfoss.com

User Guide | Network control AK-SM 720

Contents

1. Introduction

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

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

2. Design of a controller

Module survey .................................................................................................... 7

Common data for modules ............................................................................9

Dimensions ........................................................................................................10

System manager AK-SM.......................................................................11

Extension module AK-XM 101A ........................................................13

Extension module AK-XM 102A / AK-XM 102B ............................15

Extension module AK-XM 204A / AK-XM 204B ............................17

Extension module AK-XM 205A / AK-XM 205B ............................19

Extension module AK-XM 107A .......................................................21

Extension module AK-OB 110 ............................................................23

Power supply module AK-PS 075 / 150 ..........................................24

Preface to design .............................................................................................25

Functions ...................................................................................................25

Connections .............................................................................................26

Limitations ................................................................................................26

Design of a System manager ......................................................................27

Ordering .............................................................................................................35

3. Mounting and wiring

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

Wiring ..................................................................................................................37

4. Conﬁguration and operation

Installation in network...................................................................................39

Conﬁguration ....................................................................................................41

Connect PC ...............................................................................................41

Unlock the conﬁguration of the controllers .................................43

Clock function .........................................................................................44

Quick setup...............................................................................................45

Plants main data .....................................................................................46

Alarm relay on plant ..............................................................................47

Destinations to be communicated with ........................................48

Routing of alarms ...................................................................................49

Alarms from controllers .......................................................................51

Modem and IP settings ........................................................................52

Design some functions yourself .......................................................53

Alarms for boolean functions ............................................................54

AKC controllers on DANBUSS.............................................................55

Conﬁguration of inputs and outputs ..............................................57

Set alarm priorities .................................................................................58

Lock conﬁguration .................................................................................59

Check conﬁguration ..............................................................................60

Check of connections ....................................................................................61

Find the controllers on the network .........................................................62

Setup of controllers ........................................................................................63

Setup functions ................................................................................................64

Logs ......................................................................................................................65

Plant operations ...............................................................................................67

First start of system manager ......................................................................81

Check alarms ............................................................................................81

Lock conﬁguration of connections ..................................................82

Check level for safety ............................................................................83

Conclusion ................................................................................................83

5. Regulating function

Local data communication ..........................................................................85

Extern data communication ........................................................................86

Alarm handling ................................................................................................88

Plant controls ....................................................................................................90

Logs ......................................................................................................................94

Operation ...........................................................................................................96

Clock.....................................................................................................................97

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User Guide | Network control AK-SM 720

1. Introduction

Application

AK-SM 720 is a complete system manager to control data communication to ADAP-KOOL® Refrigeration Control Systems. The system unit makes it possible to transmit alarms and system functions to external receivers.

The main function of the system manager is to transmit alarms. It also contains the primary functions that the refrigeration system’s controllers can use to sub-optimise the individual refrigeration sites.

To mention some of the various functions brieﬂy:

• Alarm receiver

• Forward alarms

• Collect logs

• Schedules

• Defrost groups

• Light functions

• Energy-saving functions

• Design of Boolean functions

Examples

Here are a couple of examples where the system manager takes care of communication to other units.

Receive alarms and logs from the controllers in the application

Modem connection to the service company

Local data communication can be:

• LON RS 485

• MODBUS

• DANBUSS (this does, however, also require a protocol interface type AK-PI 200. Literature no. RS8EX)

• There is a maximum of 200 controllers on the data communication. A maximum of 120 units of the EKC incl. SLV, where there must be a maximum of 15 diﬀerent types and software versions.

• TCP/IP

External data communication can be:

• TCP/IP

• Modem

Operation must take place using:

• Service tool type AK-ST

The system unit can transmit alarms and logs to:

• System software type AKM

Retrieve functions from some controllers and forward them to others

User Guide | Network control AK-SM 720

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 questions so that the regulation can be deﬁned and the connections made.

Controller

Top part

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.

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

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.

Examples

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

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User Guide | Network control AK-SM 720

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 compressor regulation and the condenser regulation. At the bottom of the display there is access to a number of general functions, such as "network overview", “time table”, “log function”, “alarms”, "plant control" and “service” (conﬁguration).

Data communication

The controller forwards the data communication to all of the connected controllers. It receives measurements from selected functions. The measurements are sent to other controllers, which use the value in the control function. The controller receives alarms from all connected controllers and forwards them to the deﬁned receivers.

Users

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”.

Users are added and deﬁned in the menu item “Conﬁguration”/ ”Authorisation”.

User Guide | Network control AK-SM 720

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.

If you are in a service situation you can show measurements in a trend function. The measurements are then made realtime and displayed instantly.

n Power n Comm n DO1 n Status n DO2 n Alarm n DO3 n Service Tool n DO4 n LON n DO5 n RS485 n DO6 n LAN n DO7 n DO8 n Service Pin

Slow ﬂash = OK Quick ﬂash = answer from master in 10 min. after network installation Constantly ON = error Constantly OFF = error

Flash = Active alarm / not cancelled Constant On = Aktive alarm / cancelled

External communication

Network installation

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.

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User Guide | Network control AK-SM 720

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

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 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.

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.

• 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 analog inputs

Controller with analog inputs and relay outputs.

Top part

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.

Extension module with analog output signals

User Guide | Network control AK-SM 720

1. Controller

Type Function Application

AK-SM 720 System manager Control data communication

2. Extension modules and survey of inputs and outputs

Type Analog

inputs

For sensors, pressure transmitters etc.

System manager 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

AK-XM 107A 8

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)

Pulse counter Low voltage (max 30 V)

Analog outputs

0 – 10 V DC 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 zero modem cable and AK controller AK - RS 232

Accessories Power supply modul 230 V / 115 V to 24 V DC

AK-PS 075 18 VA DC AK-PS 150 36 VA DC

Supply for controller

On the following pages there is data speciﬁc to each module.

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User Guide | Network control AK-SM 720

Common data for modules

Supply voltage 24 V DC/AC +/- 20%

Power consumption AK-SM 720 8 VA

AK-XM 101, 102, 107 2 VA

AK-XM 204, 205 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/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

0 / 80 V AC/DC

High voltage 0 / 260 V AC

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

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 AC , Min. 48 V AC Max. 0.5 A, Leak < 1 mA Max. 1 AKV

Ambient temperature During transport -40 – 70 °C

During operation -20 – 55 °C ,

0 – 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

User Guide | Network control AK-SM 720

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

A power supply module is either 36 mm or 54 mm If there is space on the DIN rail, the power supply module can be positioned to the left of the system manager.

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User Guide | Network control AK-SM 720

System manager AK-SM

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 AC or DC 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

The installation has to be made as mentioned in the separate instructions.

Address setting

When the system manager is conﬁgured, the address must be set in the range 1 to 10. 1 must always be used. If there are more than one, the rest must be set with addresses 2 to 10.

Service PIN When the address has been set, the software must know the setting. This is done by pressing the Service PIN button. The “Status” LED will ﬂash when acceptance is received.

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

• Alarm when LED ﬂashes. Alarm acknowledged = constant light

• Communication with Service Tool

• Communication on LON

• Communication on MODBUS

• Communication on TCP/IP

• “Service Pin” switch has been activated

Address

Internal communication between the moduls: Quick ﬂash = error Constantly On = error

n Power n Comm n DO1 n Status n DO2 n Alarm n DO3 n Service Tool n DO4 n LON n DO5 n MODBUS n DO6 n LAN n DO7 n DO8 n Service Pin

Status on output 1-8

Slow ﬂash = OK Quick ﬂash = answer from master in 10 min. after network installation Constantly ON = error Constantly OFF = error

Flash = Active alarm / not cancelled Constant On = Active alarm / cancelled

External communication

Network installation

Keep the safety distance!

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

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

User Guide | Network control AK-SM 720

Point

Analog inputs on 1 - 11

Solid state outputs on 12 - 15

Relay or AKV coil fx 230 V AC

Pt 1000 ohm/0°C

Point 1 2 3 4 5 6 7 8 9 10 11

Type AI1 AI2 AI3 AI4 AI5 AI6 AI7 AI8 AI9 AI10 AI11

Signal Signal

type

S1 S2 Saux1

Pt 1000 Saux2 SSA SdA

24 and 25 used only when "Option board ﬁtted"

Terminal 15 & 27: 12 V max. 100 mA in total.

Terminal 16 & 28: 5 V max 100 mA in total.

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

Relay outputs on 16 - 19

Point 12 13 14 15 16 17 18 19

Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8

AKS 32R

3: Brown

2: Blue

1: Black

P0A P0B PcA PcB

AKS 32

3: Brown

2: Black

1: Red

...

On/Oﬀ Ext.

Main switch

Day/ Night

Door

AKV

Comp 1 Comp 2 Fan 1 Alarm Light Rail heat Defrost

Option Board

Please see the signal on the page with the module.

AKS 32R

-1 - xx bar

AKS 32

-1 - zz bar

0 – 5 V

0 – 10 V

Active at:

Closed

Open

Active at:

Oﬀ

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) 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 - 41

17 (DO6) 42 - 44

18 (DO7) 45 - 47

19 (DO8) 48 - 50

24 -

25 -

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User Guide | Network control AK-SM 720

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)

User Guide | Network control AK-SM 720

Point

Pt 1000 ohm/0°C

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.

Signal Signal

S1 S2 Saux1 Saux2 SSA SdA

type

Pt 1000

Point 1 2 3 4

Type AI1 AI2 AI3 AI4

Point 5 6 7 8

Type AI5 AI6 AI7 AI8

Terminal 9 & 16: 12 V max. 100 mA in total.

Terminal 10 & 15: 5 V max 100 mA in total.

Terminal

11, 12, 13, 14:

(Cable screen)

AKS 32R

AKS 32

3: Brown

2: Blue

1: Black

3: Brown

2: Black

1: Red

P0A P0B PcA PcB

...

On/Oﬀ Ext.

Main switch

Day/ Night

Door

AKS 32R

-1 - xx bar

AKS 32

-1 - zz bar

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

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User Guide | Network control AK-SM 720

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 AC Oﬀ: DI < 2 V AC

AK-XM 102B

Max. 230 V

On/Oﬀ: On: DI > 80 V AC Oﬀ: DI < 24 V AC

User Guide | Network control AK-SM 720

Point

AK-XM 102A: Max. 24 V AK-XM 102B: Max. 230 V

Signal Active at

Ext. Main switch

Day/ Night

Comp. safety 1

Comp. safety 2

Closed

(voltage on)

Open

(voltage oﬀ)

Point 1 2 3 4

Type DI1 DI2 DI3 DI4

Point 5 6 7 8

Type DI5 DI6 DI7 DI8

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

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User Guide | Network control AK-SM 720

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 Light ON = override Light 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

User Guide | Network control AK-SM 720

Point

Punkt 1 2 3 4 5 6 7 8

Type DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8

Signal Active at

Comp. 1

Comp. 2

Fan 1

Alarm

Oﬀ

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 - 42

7 (DO 7) 43 - 45

8 (DO 8) 46 - 48

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User Guide | Network control AK-SM 720

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

User Guide | Network control AK-SM 720

Point

Pt 1000 ohm/0°C

Signal Signal

type

S1 S2 Saux1

Pt 1000

Saux2 SSA SdA

Point 1 2 3 4 5 6 7 8

Type AI1 AI2 AI3 AI4 AI5 AI6 AI7 AI8

Terminal 9 & 21: 12 V max. 100 mA in total.

Terminal 10 & 22: 5 V max 100 mA in total.

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

AKS 32R

AKS 32

On/Oﬀ

3: Brown

2: Blue

1: Black

3: Brown

2: Black

1: Red

P0A P0B PcA PcB

...

Ext. Main switch

Day/ Night

Door

Comp 1 Comp 2 Fan 1 Alarm Light Rail heat Defrost

AKS 32R

-1 - xx bar

AKS 32

-1 - zz bar

0 – 5 V 0 – 10 V

Active at:

Closed

Open

Active at:

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 - 27

10 (DO 2) 28 - 30

11 (DO 3) 31 - 33

12 (DO 4) 34 - 36

13 (DO 5) 37 - 39

14 (DO6) 40 - 42

15 (DO7) 43 - 45

16 (DO8) 46 - 48

Terminal

Signal type /

Active at

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User Guide | Network control AK-SM 720

Extension module AK-XM 107A

Function

The module contains eight inputs for pulse counting. As an alternative, the input can be used to register an On/Oﬀ signal. (DI function).

Supply voltage

The supply voltage for the module comes from the previous module in the sequence.

LEDs

These indicate the following:

• Voltage of the module

• Communication with the controller is active (red = error)

(There is no LED indication for the individual signal inputs)

Signal

The signal is registered in accordance with DIN 43864. Rise times and fall times must be less than 5 ms. On and oﬀ times must be greater than 30 ms.

User Guide | Network control AK-SM 720

Point

Point 1 2 3 4

Type CI1 CI2 CI3 CI4

Point 5 6 7 8

Type CI5 CI6 CI7 CI8

Signal Active at

Puls - - -

Signal Module Point Terminal Active at

1 (CI 1) 1 - 2 - - 2 (CI 2) 3 - 4 - - 3 (CI 3) 5 - 6 - - 4 (CI 4) 7 - 8 - - 5 (CI 5) 9 - 10 - - 6 (CI 6) 11 - 12 - - 7 (CI 7) 13 - 14 - - 8 (CI 8) 15 - 16 - - -

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User Guide | Network control AK-SM 720

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 0 – 10 V

Module

Point 24 25

Type AO1 AO2

AO2

AO1

User Guide | Network control AK-SM 720

Power supply module AK-PS 075 / 150

Function

24 V supply for controller.

Supply voltage

100 V AC to 240 V AC 50/60Hz

Placing

On wall or DIN-rail

Eﬀect

Type Output tension Output current Power

AK-PS 075 24 V DC 0.75 A 18 VA

AK-PS 150 24 V DC

(adjustable)

Dimension

Type High Width

AK-PS 075 90 mm 36 mm

AK-PS 150 90 mm 54 mm

1.5 A 36 VA

Connections

Supply to a System manager

AK-PS 075

AK-PS 150

User Guide | Network control AK-SM 720

Preface to design

In most cases the system manager may be able to manage the control process without any kind of supplementary modules. Expansion modules will only be needed when measuring consumption, when using a large number of relays or when using Boolean functions.

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 high-voltage module.

Functions

Clock function

Clock function and change-over between summer time and winter time are contained in the system manager. The clock’s setting is retained if there is a power failure.

Start/stop of regulation

Regulation can be started and stopped via the software. It cannot be stopped with a switch function.

Alarm function

If the alarm is to be sent to a signal transmitter, a relay output will have to be used.

System controls

Some of the possible system controls will require input signals or output signals.

• Weekly schedule with the store’s hours of business

If there has to be an override to “day”, a switch function will be required. If there has to be an override to “night”, a switch function will be required.

• 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.

• Light control

A signal can be received from two light sensors. Each sensor requires an analogue input. Up to eight zones can be controlled. Each zone will require a relay output or a triac output.

• Adaptive rail heat

A signal can be received from three dew point sensors. Each sensor requires two analogue inputs.

• Consumption measurement

When measuring consumption an expansion module must be used for pulse counting. A synchronisation signal will require an analogue or a digital input. A tariﬀ signal will require an analogue or a digital input. Two tariﬀ signals can be received.

• Peak load limitation

This function requires a signal from a consumption measurement. Up to ten relays can be connected.

• Weekly schedule for day/night operation

A switch signal will be required to override a schedule

• Weekly schedule for defrost

A switch signal will be required to override a schedule

• Weekly schedule for light

A switch signal will be required to override a schedule

• Inject ON function (closes the evaporator controls’ expansion valves in the event of operational problems with the compressors)

The function can be enabled via data communication or it can be wired outside the system manager

Data communication

The controller module has terminals for LON data communication. The requirements to the installation are described in a separate document.

User Guide | Network control AK-SM 720

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 short-

circuited or ”opened”, respectively

• Voltage signal from 0 to 10 V

• Signal from pressure transmitter AKS 32

or AKS 32R 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 diﬀerent extension modules for this signal type:

- low-voltage signals, e.g. 24 V

- high-voltage signals, e.g. 230 V

When programming the function must be set:

• Active when the input is without voltage

• Active when voltage is applied to the

input.

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 Reserved for AKV valves, 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.

Analog output signal ”AO”

This signal is to be used if a control signal is to be transmitted to an external unit, e.g. a frequency converter. When programming the signal range must be deﬁned: 0 – 5 V, 1 – 5 V, 0 – 10 V or 2 – 10 V.

Pulse counter inputs

This signal must be used if consumption measurement is to take place.

Limitations

As the system is very ﬂexible 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.

There must a maximum of 200 controllers on the data communication. A maximum of 120 units of the EKC type, where there must be a maximum of 15 diﬀerent types and software versions.

• 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 ﬁve pressure transmitters may be connected to one controller module.

• No more than ﬁve pressure transmitters may be connected to one extension module.

User Guide | Network control AK-SM 720

Design of a System manager

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/power supply

1. Sketch

Make a sketch of the system in question

User Guide | Network control AK-SM 720

2. System functions

Application

Control of data communication on the refrigeration system

Control of data communication for external operation

Forward alarms and data collected x

Local data communication

LON RS485 together with

- Controllers type EKC

- Controllers type AK

- Frequency converter type AKD MODBUS together with similar controllers that

have MODBUS communication TCP/IP together with other AK-SM x TCP/IP to AK-PI 200 and onwards to controllers

with DANBUSS Max. number of controllers (addresses) in a

network

External data communication

Via modem and phone net x Via TCP/IP and Internet x

200, although max. 120 EKC incl. SLV

User registration

User interface with Password and authorisation levels

History Event x

Operation

Via PC and software type AK-ST x

Clock

Clock function with battery backup x Resets the clock in the controllers after a power

failure

Safety

Communication control x Watchdog function with adjustable interval time x Data communication with "I'm a live" information x High level of security against undesired user

access

A bit more about the functions ("2" continued)

Alarm management

LOG of alarms x

Routing of alarms to Systemsoftware x

A relay can be deﬁned to an alarm relay x

System controls

Weekly schedule with the store’s hours of business x Weekly schedules with time speciﬁed in relation to

hours of business On/oﬀ control 5 Weekly schedules for use together with day/night

operation and start of defrost Override weekly schedules with a switch function 10 Switch between day operation and night opera-

tion

Defrost start

Coordinated defrost (common start after defrost) x Inject ON function (closes the evaporator controls’

expansion valves in the event of operational problems with the compressors)

P0-control 5 / 120 sections

Light control

Adaptive rail heat

Adaptive defrost

Consumption measurement 8

Load sheeding x

Synchronising signal x

max. 30 controllers

Max. 20 groups of

5 / 120 sections

2 light sensors,

8 relais, 8 zones

3 groups /

30 sections 10 groups /

30 sections

Here is a little more about some of the functions that must use an input or an output.

Modem connection

It is recommended that the supply voltage to the modem be provided through a relay, so that the system manager can start the modem in a controlled way.

The “Inject On” override function

This function closes expansion valves on evaporator controls when all compressors have stopped. The function can take place via data communication, or it can be wired via a relay output on the compressor control.

Boolean functions

A function in the system unit makes it possible to set up some logical functions. The functions can have both inputs and outputs. The function is described in a separate document. Please refer to literature sheet number RC8CA. This setup of Boolean functions should only be undertaken by trained personnel.

If you want to know more about the functions, go to chapter 5.

LOG

Stores LOG data from the connected controllers x

User Guide | Network control AK-SM 720

3. Connections

Here is a survey of the possible connections. The texts can be read in context with the table on the next page.

Analog inputs

Temperature sensors

Up to 3 sensors for dew point measurement and 4 sensors for boolean logic can be connected.

Pressure transmitter

A pressure transmitter type AKS 32 or AKS 32R can supply signals to a maximum of ﬁve controllers.

Voltage signal

• 0 – 10 V

Used when signal is received from another control. E.g. signal from dew point sensor. (A dew point sensor delivers two signals – a temperature sensor signal and a voltage signal)

On/Oﬀ-inputs

Contact function (on an analog input) or Voltage signal (on an extension module)

• Switches to override a weekly schedule

• Switches to override light control

• Signal to register tariﬀ levels

Pulse counter input (on an expansion module)

• E.g. for energy registration

On/oﬀ-outputs

Relay outputs

• Voltage supply to modem

• Watch dog function

• Injection On function (signal to evaporator control. One each suction group)

• Alarm relay

• Light control

• Load sheeding

Solid state outputs

The solid state outputs on the controller module may be used for the same functions as those mentioned under “relay outputs”. (The output will always be “OFF” when the controller has a power failure).

Example

• AK-SM 720 is with data communication for EKC controllers

• Modem connection for alarm routing (for System software AKM)

• Modem connection for external operation (for Service tool)

• Alarm output

• Contact to reset alarms

• Energy measurement, which receives puls signal from extern unit.

Data from this example is used on the next page. The result is that the following modules should be used:

• AK-SM 720 controller

• AK-XM 107A pulse module

User Guide | Network control AK-SM 720

4. Planning table

The table helps you establish whether there are enough inputs and outputs on the system manager. If there are not enough of them, it must be extended by one or more of the mentioned extension modules.

Note down the connections you will require and add them up

Analog inputs

Temperature signal from dew point sensor (max. 3) Voltage signal from dew point sensor (max. 3) Voltage signal from a light sensor (max. 2)

Analog input signal

Example

On/oﬀ voltage signal

Example

On/oﬀ voltage signal

Example

Pulse module

Example

On/Oﬀ output signal

Example

Limitations

On/oﬀ inputs Con-

tact Contact for overriding of week schedule for day/night operation Contact to overriding of weekly schedule for light Pulse signal from meter for electr., gas, water etc. 1 On/Oﬀ signal about tariﬀ change Pulse pressure for stop of alarm 1

On/oﬀ outputs

Voltage supply for modem (reset function) 1 Alarm relay 1 Light zones (up to 8 relays)

5. Load sheeding limit (up to 10 relays)

6. Sum of connections 1 1 2 Sum = max. 80

Number of connections on a System manager 11 11 0 0 0 0 0 0 8 8

Missing connections, if applicable 0 - - 1 0

The missing connections to be supplied by one or more extension modules: Sum of power

AK-XM 101A (8 analog inputs) ___ pcs. á 2 VA = __ AK-XM 102A (8 digital low voltage inputs) ___ pcs. á 2 VA = __ AK-XM 102B (8 digital high voltage inputs) ___ pcs. á 2 VA = __ AK-XM 107A (8 pulse inputs) 1 ___ pcs. á 2 VA = __ AK-XM 204A / B (8 relay outputs) ___ pcs. á 5 VA = __ AK-XM 205A / B (8 analog inputs + 8 relay outputs) ___ pcs. á 5 VA = __

24 V 230 V

Pressure transmitters: Max. 5 each/ module

Boolean logic: There are limitations to the number of functions. Refer to separate document RC8CA.

1 pcs. á 8 VA = 8 Sum = Sum = max. 32 VA

Example: None of the 3 limitations are exceeded => OK

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