Danfoss AK-PI 300 User guide

User Guide

Protocol interface

AK-PI 300

ADAP-KOOL® Refrigeration control systems

Introduction

Function

The AK-PI 300 is an intermediary link allowing Daikin type
controllers to be operated via a System Manager, e.g. AK-SM 720
or similar.
The actual operation of the controllers is carried out with an AK-ST

500.

Daikin units include data communication, where communication
is controlled by a Daikin Comm. box or a Daikin RTD-network.
The three units: “Outdoor unit”, “Booster unit” and “Indoor unit”
can be connected to the Comm. box and “Indoor unit” to RTD­network.

Application

The AK-PI 300 is used on systems where the system unit is an
AK-SM 720 and where there is/are one or more Daikin type units.
AK-PI 300 links communication to Daikin so that the system
manager can present all the controllers on the system.
Daikin units are presented on an equal footing together with
LON RS 485 controllers and MODBUS controllers.
All controllers can be viewed and operated from the system
manager’s network overview.
The network list on the right shows two RTD-networks, and an
outdoor unit. The outdoor unit is connected via a Comm. box.

Principle

The link between the system manager and the AK-PI 300 is via a
TCP/IP.
In this very simple connection the two units can be connected to
each other via a crossed cable.
This is where the IP addresses are set to static addresses.

On larger systems or where there is also outgoing IP
communication from the system, the connection must be made
via a router.
Here the IP addresses can be dynamic, but if there is
communication to the system from outside, they must be static.

If you are not sure whether you should select static or dynamic, abide
by the following recommendation:

Dynamic is the easiest. Here the router itself allocates an address
for the system manager and another for the PI unit. But you
should only select this solution if the system is closed without a
connection for an external operation interface.

With static you must obtain a couple of addresses yourself at the
local IT department and you must also set the addresses yourself
in the two units. This solution must always be used when the
system is operated by an external service company, e.g. for log
collection, alarm management or service.

Contents

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

Installation .......................................................................................................... 4

Requirements and terms ............................................................................... 6

Ordering .............................................................................................................. 8

Data ....................................................................................................................... 8

2 Manual RS8GP102 © Danfoss 12-2015 AK-PI 300

Number of Daikin units

One Comm. box and three RTD units can be connected to a single
AK-PI 300.
If there are more, use 2 (x) AK-PI 300 units.
Up to two AK-PI-300 units can be connected to a single system
manager, i.e. up to 2 Comm. boxes and 6 RTD units.
If there are two AK-PI 300 units, the connection to the system
manager is led via a router or a switch.
(Up to 32 outdoor units, 30 booster units and 64 indoor units can
be connected to a single Comm. box. Up to 16 indoor units can be
connected to a single RTD unit.)

Addresses

In principle there are three types of addresses:

IP addresses

Both the system manager and the AK-PI 300 must have an IP
address set.
The address can be either dynamic or static – the desired value is
selected with a setting. If static is chosen, an address must also be
set.
If the system can be accessed externally, the setting in the
system manager AK-SM 720 must always be set to static so that
the external connection always recognises the address and can
communicate with the unit.
(The IP address is set in a menu).

Network addresses

There must always be one and only one master system manager
on a network. This is dened with the address setting = 1. This
system manager controls the communication to all the other
controllers on the network. The PI unit is perceived as a controller
on the network and its address can be viewed in the IP list. (Up to
two PI units can be connected to the system manager, which is
master - i.e. has address =1)
(You set the network address on the front of the system units and
on the front of the PI units.)
Set the system manager to address 1.
If there are several system managers (slave network), set these to
addresses 2 to 10.
Each PI unit is set with a separate address. Select 12 or higher, e.g.

21.

Interconnection
When setting the system manager, a menu must also be set in
which the relevant AK-PI 300 chooses the network. The system
manager then knows the way to the dierent Daikin units. The
system manager must be version 1.20 or later.

Controller addresses

All controllers on the same network must have dierent addresses.
In other words, all controllers that are connected to a system
manager on either:

• the LON communication

• the MODBUS communication

• the DANBUSS communication or

• Daikin communication.

Start with the addresses on Daikin RTD-NET.
Then for DANBUSS, if needed (via AK-PI 200).
A Daikin Comm. box registers 3 addresses.
After this, add the addresses on the Daikin Comm. box connec­tions. (These address numbers can be oset. See next page.)
The addresses on the LON and MOD buses can be set higher.
No more than 200 controllers can be connected to a system
manager.

Daikin Outdoor: Address options 1 to 32
Daikin Booster: Address options 1 to 30
Daikin Indoor: Address options 1 to 64
DANBUSS communication: Address options 1 to 120
LON-communication: Address options 1 to 999
MOD-bus communication: Address options 1 to 247

Max. number of controllers: 200 pcs.

AK-PI 300 Manual RS8GP102 © Danfoss 12-2015 3