Danfoss ADAP-KOOL Installation guide

Design guide

Data communication

between ADAP-KOOL® Refrigeration Controls

ADAP-KOOL® Refrigeration control systems

Introduction

This installation manual covers the data communication systems installed in Danfoss refrigeration control systems.

Within this guide descriptions and speciﬁcations will be shown that supports the data communication interface with Danfoss refrigeration controls systems.

Data communication

System unit

System operation

The guide describes:

- The various forms of communication

- Cable to be used

- Length of cable

- Termination of cable

- When to install a repeater and

- How do the individual controllers become visible on the network

- What happens if a controller has to be replaced

- What happens if the gateway has to be replaced

The recommendations mentioned in this document are intended as instructions for the market’s refrigeration engineers and electricians who install Danfoss refrigeration controls.

Controllers

Repeater

ADAP-KOOL® only

The above communication systems are used for internal communication between ADAP-KOOL® refrigeration control systems. The devices are not designed to communicate with equipment manufactured by other manufacturers.

IP network

In the case of controllers and system units that can be connected to an IP network, installation should be carried out on the basis of the requirements that apply to an IP network, i.e. cables must be at least category 5.

Contents

Introduction .................................................................................2

A little about controllers and system units ...............................3

Communication survey ............................................................................... 3

System units .................................................................................................... 4

Addressing of controllers in the network ............................................. 6

Replacement of controllers in the network ......................................... 6

Replacement of system units in the network ..................................... 6

Requirements to installation ......................................................7

Important ......................................................................................................... 7

Lon RS 485 - bus ............................................................................................. 8

MOD - bus ...................................................................................................... 10

Lon TP 78 - bus .............................................................................................12

DANBUSS ........................................................................................................14

Combinations of net ..................................................................16

Bridge .............................................................................................................. 16

Repeater .........................................................................................................17

2 Design guide RC8AC902 © Danfoss 2017-06 Data communication

A little about controllers and system units

Communication survey

The table below shows which controllers can communicate with which system units and with what form of data communication. The summary is valid as of ultimo 2015, but the ADAP-KOOL® Refrigeration Control System is continually being extended.

System operation

AK-ST 500

AK-EM 100

AK-EM 800

AKM

System unit Controller serie / type Lon

AK-SM 800

series

AK - controllers with extension modules AK-CC, AK-PC, AK-LM, AK-CH

EKC 3xx x

EKC 202, AK-CC 210 x x

EKC 302, AK-CC 250, 350, AK-PC, AK-CT x

AK-CC 450, 550 (x) x (x)

AK-PI 200 x x

AK-CM (communication module) + AK-XM x x

DGS, SLV, Wattnote, Power meter, light control (3. party) x

RS485

Mod-

bus

Lon

TP 78

DANBUSS

x x x

AK-SM 350 AK-SM 720

AK - controllers with extension modules AK-CC, AK-PC, AK-LM, AK-CH

x x x

EKC 3xx x

EKC 202, AK-CC 210 x x

EKC 302, AK-CC 250, 350, AK-PC, AK-CT x

AK-CC 450, 550 (x) x (x)

AK-PI 200 x x

DGS, SLV x

AK-SC 255, 355 x

x x

AK-CM (communication module) + AK-XM x x

AK - controllers with extension modules AK-CC, AK-PC, AK-LM, AK-CH

AK-CC 750 (TP 78 version) x

EKC 302, AK-CC 250, 350, 450, 550, AK-CT x

EKC 202, 4xx, 5xx, AK-CC, AK-PC x

AKM

EM 100 AKA 245 x x

AKA, AKC, AKL x

AK - controllers with extension modules AK-CC, AK-PC, AK-LM, AK-CH

EKC 202, 302, 3xx, 4xx, 5xx, AK-CC 210 x

AK-CC 450, 550 x x

1) AKM can receive alarms and logs from an AK-SM 720 and AK-SM 350. The connection is made via an analogue modem, a GPS modem or an IP network.

2) Can be delivered in two versions:

- Standard Lon-RS485

- Retro-ﬁt Lon TP 78.

3) Together with AK-SM 350 and AK-SM 720 only.

Data communication Design guide RC8AC902 © Danfoss 2017-06 3

System units

A brief summary is presented here of the communication options for the various system devices:

AK-SM 820

Up to 32 controllers can be connected, which can communicate on:

- Lon

- Modbus

- External I/O modules via AK-CM 101C

- Ethernet communication for other AK-SM or AK-SC devices

- AK-PI 200 protocol interface with DANBUSS communication

AK-SM 850, AK-SM 880

Up to 120 controllers can be connected, which can communicate on:

- Lon

- Modbus

- External I/O modules via AK-CM 101C

- Ethernet communication for other AK-SM or AK-SC devices

- AK-PI 200 protocol interface with DANBUSS communication

AK-SM 880 it can be delivered in a version, which can communicate in 4 x TP 78 or AK-CM 101A.

AK-SM 720

There are three forms of data communication:

- A Lon RS485 bus, to which up to 199 devices can be connected.

- A Modbus, to which up to 120 devices can be connected.

- Ethernet communication for other AK-SM devices, to which up to 199 addresses can be connected.

The system device can communicate with:

- AK-CC, AK-PC controllers

- EKC with either Lon RS485 or Modbus communication

- AK-PI 200 protocol interface with DANBUSS communication

- AK-PI 300 protocol interface for Daikin devices

- Other AK-SM 720 devices

- AKM and AK-EM 800 via agent.

Lon RS485

Modbus

IP network

Lon RS485

Modbus

IP network

Lon RS485 (max. 199 devices)

Modbus (max. 120 devices)

Total on bus: Lon RS 485 + Modbus: max. 199 devices

IP network (max. 199 addresses) Total AK-SM 720 + AK-PI 200 + IP + bus: max. 200 devices.

A repeater must be added if there are more than 120 devices on the Lon RS485 communication.

Total up to 32 devices

Total up to 120 devices

AK-SM 350

This device can record up to 65 (99) readings. A reading could for example be a directly mounted temperature sensor or an external device with a temperature sensor, where the readings is loaded via data communication. There are four forms of data communication:

- A Lon RS485

- A Modbus

- RS485 TP (Third Party) To which gas detectors, type GD, can be

Lon RS485

Modbus

RS 485 TP

Total up to 65 (99) devices

connected

- Ethernet communication for other AK-SM 720 or AK-SC devices.

AK-SM 350 can communicate with:

IP network

- EKC with either Lon RS485 or Modbus communication

- AK-CC, AK-PC controllers

- Gas detectors type GD

- AK-PI 200 protocol interface with DANBUSS communication

- Ethernet communication for other AK-SM or AK-SC devices.

AK-SC 255 / AK-SC 355

AK-SC 255 and 355 are available in 2 versions:

- Modbus + Lon TP 78 communication

- Modbus + Lon RS485 communication

- Ethernet communication for other AK-SC or AK-SM devices.

The system device can communicate with:

- External I/O modules via AK-CM 101C or 101A (depending on model)

- All controllers where the communication is supported by:

Modbus, Lon, TP78).

Gateway type AKA 245

This system device is equipped with DANBUSS data communication and Lon RS485 data communication. It can control the communication of up to 120 controllers. The controllers can be distributed between Lon and DANBUSS by setting a continuous Lon address range of up to 119 addresses. The system device can create communication for type AKM system software. The system device can communicate with:

- AKC controllers

- EKC controllers with a Lon RS 485 communication

- AK-CC, AK-PC controllers

- AK-EM 800 via Agent

Modbus Lon RS485 / TP 78

IP network

DANBUSS

Lon RS485

Total up to 120 devices

Addressing of controllers in the network

1. Connect voltage

2. Set the address in the respective controllers If you should inadvertently give two or more controllers the same address, only the ﬁrst controller will be visible from the system device.

3. The system device must know the controllers. The following will occur depending on the communication type:

Lon RS485

Or better: The system device can scan the network and ﬁnd all connected controllers. This scan function must be started manually in the system device.

Modbus, TP78

Replacement of controllers in the network

Settings

The system operation includes functions to copy a controller’s settings. This function can be used where a controller is to be replaced with the same software version. After swapping, the settings are copied back onto the controller.

Address

Remember to reset the address of the controller with the same address and get the controller to notify the system device again. (You should also do this yourself if you are retaining the existing LON module). Here, the controller can send a service PIN to the system device.

Here, the system device must scan the network. The service PIN function on each controller cannot send the address to the system device.

DANBUSS

On DANBUSS, the addresses must be set before the power is switched on. The system device will ﬁnd the controllers on the network itself.

Modbus, TP78

The system device will scan the network and ﬁnd the controllers that have been replaced. This scan function must be started manually in the system device.

Lon RS485

• AK-SC 255, 355, SM 850

The system device will scan the network and ﬁnd the controllers that have been replaced. This scan function must be started manually in the system device.

• AK-SM 350, 720, AKA 245

Here, the controller will send a service PIN to the system device.

Replacement of system units in the network

If you replace the system device, all settings and data can be retrieved and reloaded with a backup function. See user Guide for the respective system device, so you can see how the setup and the collected data is retained.

• Terminate data communication inputs as previously

• Set the system device address

• Load the controller addresses up to the system device.

AK-SM 820, 850, 880

Set the address to the same value as on the previous system device. Then start the Rescan function.

AK-SM 350

No address needs to be set on AK-SM 350. Start the scan function to ﬁnd all connected controllers.

DANBUSS

On DANBUSS the system device will ﬁnd the controllers on the network itself.

AK-SM 720

Set the address to the same value as on the previous system device. The scan function can then be started to ﬁnd all connected controllers.

AK-SC 255, 355

Set the address to the same value as on the previous system device. Then start the Rescan function.

Gateway type AKA 245

Set the system address using the AKA 21 operating device. On the DANBUSS communication, the Gateway will ﬁnd the controllers itself. On Lon RS485 the scan function can be activated from the AKA 21 operating module. This function is called “Press Enter to scan LON bus”. NB! When the scan function is used, all alarm priorities in all connected EKC controllers will be deleted and returned to their factory settings.

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