HMS Intesis KNX HITACHI VRF User manual

HITACHI VRF Air Conditioning
Gateway for the integration of Hitachi VRF systems into KNX home automation
systems
USER MANUAL
Issue date: 11/2020 r1.2 ENGLISH

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Important User Information
Disclaimer
The information in this document is for informational purposes only. Please inform HMS Industrial Networks of any
inaccuracies or omissions found in this document. HMS Industrial Networks disclaims any responsibility or liability for
any errors that may appear in this document.
HMS Industrial Networks reserves the right to modify its products in line with its policy of continuous product
development. The information in this document shall therefore not be construed as a commitment on the part of HMS
Industrial Networks and is subject to change without notice. HMS Industrial Networks makes no commitment to update
or keep current the information in this document.
The data, examples and illustrations found in this document are included for illustrative purposes and are only intended
to help improve understanding of the functionality and handling of the product. In view of the wide range of possible
applications of the product, and because of the many variables and requirements associated with any particular
implementation, HMS Industrial Networks cannot assume responsibility or liability for actual use based on the data,
examples or illustrations included in this document nor for any damages incurred during installation of the product. Those
responsible for the use of the product must acquire sufficient knowledge in order to ensure that the product is used
correctly in their specific application and that the application meets all performance and safety requirements including
any applicable laws, regulations, codes and standards. Further, HMS Industrial Networks will under no circumstances
assume liability or responsibility for any problems that may arise as a result from the use of undocumented features or
functional side effects found outside the documented scope of the product. The effects caused by any direct or indirect
use of such aspects of the product are undefined and may include e.g. compatibility issues and stability issues.

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Gateway for the integration of Hitachi VRF systems into KNX home
automation systems.
ORDER CODE
LEGACY ORDER CODE
INKNXHIT016O000
HI-AC-KNX-16
INKNXHIT064O000
HI-AC-KNX-64

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INDEX
1Description ............................................................................................................................................................5
Introduction....................................................................................................................................................5
1.1 Functionality......................................................................................................................................................6
Capacity of Intesis.........................................................................................................................................7
2KNX System..........................................................................................................................................................8
Description.....................................................................................................................................................8
Points definition.............................................................................................................................................8
3Connections ..........................................................................................................................................................9
Power device...............................................................................................................................................10
Connect to Hitachi installation.....................................................................................................................10
Connection to KNX......................................................................................................................................10
Connection to the configuration tool............................................................................................................10
4Set-up process and troubleshooting...................................................................................................................11
Pre-requisites ..............................................................................................................................................11
Intesis MAPS. Configuration & monitoring tool for Intesis KNX series .......................................................11
4.2.1 Introduction..........................................................................................................................................11
4.2.2 Connection...........................................................................................................................................11
4.2.3 Configuration tab .................................................................................................................................12
4.2.4 KNX configuration................................................................................................................................12
4.2.5 Hitachi configuration............................................................................................................................15
4.2.5.1 Direct communication with H-Link................................................................................................15
4.2.5.2 Communication through CS-NET.................................................................................................17
4.2.5.3 Common H-Link/CS-NET Manager settings................................................................................17
4.2.6 Signals.................................................................................................................................................18
4.2.7 Sending the configuration to Intesis ....................................................................................................20
4.2.8 Diagnostic............................................................................................................................................20
4.2.9 Set-up procedure.................................................................................................................................22
5Electrical & Mechanical Features........................................................................................................................23
6Dimensions .........................................................................................................................................................24
7AC Unit Types compatibility................................................................................................................................25
8Error codes for Indoor and Outdoor Units...........................................................................................................26
9Appendix A –Communication Objects Table .....................................................................................................29

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1 Description
Introduction
This document describes the integration of Hitachi VRF air conditioning systems into KNX home automation systems
using gateway Intesis KNX –Hitachi VRF.
The aim of this integration is to monitor and control your Hitachi air conditioning system, from your KNX TP-1 installation.
To do it so, Intesis performs as a one more KNX device, sending and receiving telegrams to group addresses in the
KNX network.
Intesis makes available the Hitachi air conditioning system indoor units’ datapoints through independent KNX objects.
Up to 64 indoor units supported, depending on product version.
This document assumes that the user is familiar with KNX and Hitachi technologies and their technical terms.
Integration of Hitachi VRF systems into
KNX control systems

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1.1 Functionality
IntesisTM continuously monitors Hitachi VRF network for all configured signals and keeps the updated status of all of
them in its memory. It triggers updates on configured group addresses to KNX network on value change.
Commands toward the indoor unit communication adaptor are permitted.
Each indoor unit is offered as a set of KNX objects.
Element
Object supported
Outdoor Unit
•Communication
status
•Status
Indoor Unit
•Status
•Command
•Communication
status
General signals
(all units)
•Command

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Capacity of Intesis
Element
Max.
Notes
Number of indoor units
64*
Number of indoor units that can be controlled through Intesis
* There are different models of Intesis KNX –Hitachi VRF each one with different capacity. The table above shows the
capacity for the top model (with maximum capacity).
Their order codes are:
▪INKNXHIT016O000: Model supporting up to 16 indoor units
▪INKNXHIT064O000: Model supporting up to 64 indoor units

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2 KNX System
In this section, a common description for all Intesis KNX series gateways is given, from the point of view of KNX system
which is called from now on internal system. Connection with the Hitachi system is also called from now on external
system.
Description
Intesis KNX connects directly to the KNX TP-1 bus and performs as one more device into the KNX system, with the
same configuration and operational characteristics as other KNX devices.
Internally, the circuit part connected to the KNX bus is opto-isolated from the rest of the electronics.
Intesis KNX receives, manages and sends all the telegrams related to its configuration to the KNX bus.
On receiving WRITE telegrams of KNX group addresses associated to communication objects, the corresponding
messages are sent to the external system (Hitachi installation).
When a change in a signal of the external system is detected, a WRITE telegram is sent to the KNX bus (addressed
with the group address associated to the corresponding group object), in order to maintain both systems synchronized
in every moment.
The status of the KNX bus is checked continuously and, if a bus drop-down is detected, for example due to failure in
the bus power supply, after the KNX bus is restored again, Intesis will send READ telegrams to group addresses of all
communication objects marked with flag ‘Ri’. The behavior of each individual point into Intesis is determined by the flags
configured for the communication object. See details below.
Points definition
Every group object in configuration has following KNX properties:
Property
Description
Description
Descriptive information about the communication object or signal.
Object
function
Information on range of values for the group object.
DPT
Datapoint type. It is the KNX data type used to encode the signal's value. It will depend
on the type of signal associated in the external system in every case.
Group
It is the KNX group to which the point is associated. It is also the group to which the
read (R), write (W), transmit (T), update (U) and read on init (Ri) flags are applied. It is
the sending group.
Listening
addresses
They are the addresses that can write on the group object, a part of the main group
address.
R
Read. If this flag is activated, READ telegrams of this group address will be accepted.
Ri
Read on Init. If this flag is activated, the object will trigger corresponding READ request
(on associated group address) on initialization.
W
Write. If this flag is activated, WRITE telegrams on this group object will be accepted.
T
Transmit. If this flag is activated, when the group object value changes, due to a change
in the external system, a WRITE telegram of the associated group address will be sent
to the KNX bus.
U
Update. If this flag is activated, UPDATE telegrams (response to READ telegrams) on
this group object will be accepted.
Active
If activated, the point will be active in Intesis, if not, the behavior will be as if the point is
not defined. This allows deactivating points without the need of delete them for possible
future use.
These properties are common for all Intesis KNX series gateways. Although each integration may have specific
properties according to the type of signals of the external system.
See list of communication objects in section 9APPENDIX A–COMMUNICATION OBJECTS TABLE.

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3 Connections
Find below information regarding the Intesis connections available.
Power Supply
Must use NEC Class 2 or Limited Power Source (LPS) and SELV rated
power supply.
If using DC power supply:
Respect polarity applied of terminals (+) and (-). Be sure the voltage
applied is within the range admitted (check table below). The power
supply can be connected to earth but only through the negative
terminal, never through the positive terminal.
If using AC power supply:
Make sure the voltage applied is of the value admitted (24 Vac). Do
not connect any of the terminals of the AC power supply to earth, and
make sure the same power supply is not supplying any other device.
Ethernet
Connect the cable coming from the IP network to the connector ETH of
the gateway. Use an Ethernet CAT5 cable. If communicating through the
LAN of the building, contact the network administrator and make sure
traffic on the port used is allowed through all the LAN path (check the
gateway user manual for more information). Default IP is
192.168.100.246. DHCP is enabled by default.
PortA / KNX
Connect the KNX TP1 bus to connectors A3 (+) and A4 (-) of gateway’s PortA. Respect the polarity.
PortB / H-Link Hitachi
Connect the H-Link terminals (TB2) of Hitachi Outdoor Unit to the connectors B1 and B2 of gateway’s
PortB. There is no polarity to be respected.
Console Port
Connect a mini-type B USB cable from your computer to the gateway to allow communication between the Configuration
Software and the gateway. Remember that Ethernet connection is also allowed. Check the user manual for more
information.
USB
Connect a USB storage device (not a HDD) if required. Check the user manual for more information.
Ensure proper space for all connectors when mounted (see section 6)

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Power device
The first step to perform is to power up the device. To do so, a power supply working with any of the voltage range
allowed is needed (check section 5). Once connected the ON led will turn on.
WARNING! In order to avoid earth loops that can damage the gateway, and/or any other equipment connected to it, we
strongly recommend:
•The use of DC power supplies, floating or with the negative terminal connected to earth. Never use a DC
power supply with the positive terminal connected to earth.
•The use of AC power supplies only if they are floating and not powering any other device.
Connect to Hitachi installation
Use the Port B connector of the Intesis device to connect Hitachi H-Link bus to the Intesis. Remember to follow all safety
precautions indicated by Hitachi.
Connect the Hitachi H-Link bus to connectors B1 and B2 of gateway’s PortB. Bus is not sensitive to polarity.
Connection to KNX
Connect the KNX TP1 bus to connectors A3 (+) and A4 (-) of gateway’s PortA. Respect the polarity.
Connection to the configuration tool
This action allows the user to have access to configuration and monitoring of the device (more information can be found
in the configuration tool User Manual). Two methods to connect to the PC can be used:
•Ethernet: Using the Ethernet port of Intesis.
•USB: Using the console port of Intesis, connect a USB cable from the console port to the PC.

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4 Set-up process and troubleshooting
Pre-requisites
It is necessary to have a KNX installation, device or interface operative and well connected to the corresponding KNX
port of Intesis. It is also required to have a Hitachi Air Conditioner installation, with accessible H-Link/TB2 port for
connection of Intesis.
Connectors, connection cables, PC to use the configuration tool and other auxiliary material, if needed, are not supplied
by HMS Industrial Networks S.L.U for this standard integration.
Items supplied by HMS Networks for this integration are:
•Intesis gateway.
•Link to download the configuration tool.
•USB Console cable to communicate with Intesis.
•Product documentation.
Intesis MAPS. Configuration & monitoring tool for Intesis KNX series
4.2.1 Introduction
Intesis MAPS is a Windows®compatible software developed specifically to monitor and configure Intesis new generation
gateways.
The installation procedure and main functions are explained in the Intesis MAPS KNX User Manual. This document can
be downloaded from the link indicated in the installation sheet supplied with the Intesis device or in the product website
at www.intesis.com
In this section, only the specific case of Hitachi to KNX systems will be covered.
Please check the Intesis MAPS KNX User Manual for specific information about the different parameters and how to
configure them.
4.2.2 Connection
To configure the Intesis connection parameters press on the Connection button in the menu bar.
Figure 4.1 MAPS connection

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4.2.3 Configuration tab
Select the Configuration tab to configure the connection parameters. Three subsets of information are shown in this
window: General (Gateway general parameters), KNX (KNX interface configuration) and Hitachi (Hitachi interface
parameters).
Figure 4.2 Intesis MAPS configuration tab
4.2.4 KNX configuration
Set parameters of KNX interface of Intesis.
Figure 4.3 Intesis MAPS KNX configuration tab

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1. Device configuration
1.1.Physical Address. KNX physical address of the device in the network
1.2.Extended Addresses. Enables usage of KNX Extended addresses (range from 16/0/0 to 32/7/255).
2. Operating Mode. Settings related to KNX interface for control and feedback of AC unit’s operating mode.
2.1. KNX DPT for HVAC operation mode comm object. Base DPT. Base DPT to use for control/monitor the
operating mode. Following DPT types are offered:
oDPT_20.105. DPT_HVACContrMode: 0-Auto, 1-Heat, 3-Cool, 9-Fan, 14-Dry
oDPT_5.x (non-standarized): 0-Auto, 1-Heat, 2-Dry, 3-Fan, 4-Cool
2.2. KNX DPT for HVAC operation mode comm object. Extra DPT. Additional DPT to use for control/monitor
the operating mode.
oDPT_1.100. DPT_Heat/Cool: 0-Cool, 1-Heat.
oDPT_5.001. DPT_Scaling: Enables objects “Control_ Heat Mode & On” and “Control_ Cool Mode &
On”. Their type is DPT_Scaling (0..100%), and their ending is to be able to control parameters On/Off,
Cool/Heat of indoor unit from a single percentage object. They are meant to provide compatibility with
certain thermostats oriented to the operation of valves for Heating/Cooling. Whenever a value > 0% is
received at each of these two objects, the corresponding operating mode and ON operation is sent to
the indoor unit. Whenever both values are 0%, indoor unit is set to OFF
2.3. Use of 1-bit Operating Modes. 1-bit Control Objects. Enables a bit-type object for the control of each
operating mode.
2.4. Use of 1-bit Operating Modes. 1-bit Status Objects. Enables a bit-type object for monitoring each
operating mode.
3. Temperature Sensor.
3.1. Ambient temperature provided from KNX. Enables object Control_ KNX ambient temperature.
NOTE: Indoor unit does not accept, by itself, that an ambient temperature for control of operation
of the indoor unit is provided. To allow regulation of indoor unit according to a temperature reference
from KNX, what Intesis does is passing a different temperature setpoint to the indoor unit than the
one required by the user. The passed setpoint is such that the difference ‘Ambient temperature
reported by Hitachi IU –AC setpoint’ is equal to ‘Ambient temperature reported by KNX – AC
setpoint required by KNX’, using the following formula:
“AC Setp. Temp” = “AC Ret. Temp” - (“KNX Amb. Temp.” - “KNX Setp. Temp”)
Where:
▪AC Setp. Temp: AC indoor unit setpoint temperature
▪AC Ret. Temp: AC indoor unit return temperature
▪KNX Amb. Temp.: Ambient temperature provided from KNX
▪KNX Setp. Temp: Setpoint temperature provided from KNX
Consequently, when using this feature (Ambient temp provided from KNX), setpoint at AC and
setpoint in KNX will not necessarily be the same (actually, user will not be able to operate setpoint
from AC System controllers as the remote controller).
!

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4. Fan Speed. Settings related to KNX interface for control and feedback of AC unit’s fan speed.
4.1. Auto Fan Speed. Configures availability of Auto Fan Speed control/monitoring objects. Necessary if your
indoor unit has auto fan speed.
4.2. KNX DPT for Fan Speed comm objects. DPT_5.001, DPT_Scaling. Control/monitoring of Fan Speed is
performed by means of scaling (percentage) objects. Thresholds for control object and values for status object
will vary according to number of fanspeeds of the unit.
4.2. KNX DPT for Fan Speed comm objects. DPT_5.010, DPT_Value_1_Ucount. Control/monitoring of Fan
Speed is performed by means of enumerated values.
4.4. Use of 1-bit Fan Speed. 1-bit Control Objects. Enables a bit-type object for control of fan speed.
4.5. Use of 1-bit Fan Speed. 1-bit Status Objects. Enables a bit-type object for monitoring of each fan speed.
5. Vanes Position. Settings related to KNX interface for control and feedback of AC unit’s vanes position.
4.1. Auto&Swing Vanes. Configures availability of Auto and Swing control/monitoring objects.
4.2. KNX DPT for Vane Position comm objects. DPT_5.001, DPT_Scaling. Control/monitoring of Vanes
Positions is performed by means of scaling (percentage) objects. Thresholds for control object and values for
status object will vary according to number of vanes positions of the unit.
4.2. KNX DPT for Vane Position comm objects. DPT_5.010, DPT_Value_1_Ucount. Control/monitoring of
Vanes Positions is performed by means of enumerated values.
4.4. Use of 1-bit Fan Speed. 1-bit Control Objects. Enables a bit-type object for control of Vanes Positions.
4.5. Use of 1-bit Fan Speed. 1-bit Status Objects. Enables a bit-type object for monitoring of each Vanes
Position.

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4.2.5 Hitachi configuration
The first step will be setting the type of installation to integrate between in the combo box:
•Direct communication with H-Link
•Communication through CSNET Manager.
4.2.5.1 Direct communication with H-Link
The faster way to import the units present in the H-Link bus is to Autodiscover them. To do so, click button Scan and
the following window will appear:
Figure 4.4 Intesis MAPS Scan Hitachi Units window
By pressing Scan button, connected Hitachi H-Link bus will be scanned for available units. Error window will appear if
there is a problem in the connection with H-Link bus (units not powered, bus not connected, …).
A progress bar will appear during the scan, which will take up to a few minutes. After scan is completed, detected units
will be shown in available units as follows:

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Figure 4.5 Intesis MAPS Scan Hitachi Units window with scan results
Select with its checkbox units to add (or replace) in installation, according to selection Replace Units / Add Units.
After units to be integrated are selected, click button Apply, and changes will appear in previous Units Configuration
window.
Figure 4.6 Intesis MAPS Hitachi configuration tab after importing scan results

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4.2.5.2 Communication through CS-NET
In this case, CS-NET must be setup in advance to the configuration of this gateway. When CS-NET Manager is selected,
the following settings will be activated for the communication with CS-NET Manager:
•TCP node IP. Sets the IP address of the CSNET Manager.
•TCP node port. Sets the TCP port for the communication with CSNET Manager.
•Slave number. Specify the slave number of the CSNET Manager (0…255).
In addition to this, some Advance configuration settings are provided. Consider that in most of the cases, no modification
is required in this part of the configuration, but these settings are included to overcome any issue detected for certain
installations. These parameters are:
•Time Interframe. Minimum time between received and sent frames (0...100.000).
•Retry timeout. Minimum time before launching a retry frame after no response on the TCP connection
(0…30.000ms).
•Conn. Timeout. Minimum time before launching an error message after no TCP connection (0…30.000ms).
•Rx Timeout. Minimum time before launching an error message after no TCP frames received, but TCP
connection is OK (0…30.000ms).
•Time Slave chg. Minimum time of silence when changing from one slave device to another (0…10.000).
4.2.5.3 Common H-Link/CS-NET Manager settings
Regardless the type of installation (H-Link vs CS-NET Manager communication), a manual entry of the Hitachi units
present in the H-Link bus is possible by using the AC units table:
Figure 4.7 Intesis MAPS Hitachi configuration tab for H-Link configuration
There is a new column when CS-NET Manager is selected. The new column indicates de CSNETid of the selected unit:

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Figure 4.8 Intesis MAPS Hitachi configuration tab for CSNET Manager configuration
In Units Configuration section you need to enter, for each unit:
•Active. If it’s active (checkbox at Unit xx), ranging from 1 to 64 indoor units that will be integrated (maximum
number of units will depend on Intesis model)
•IU address. Address 1…64 of Unit in Hitachi H-Link bus.
•OU address. Address 1…64 of Outdoor Unit in Hitachi H-Link bus.
•CSNETid. (only for CS-NET Manager configuration): in this column, the AC address inside the CSNET manager
must be configured by the integrator.
•Description. Descriptive name to easy identification of the unit (for example, ‘living room floor 1 unit’, etc).
Global Parameters:
In this section it is possible to select the temperature units for monitoring of the temperature signals available in the
gateways, Celsius (ºC) or Fahrenheit (ºF).
4.2.6 Signals
All available KNX objects, its corresponding description and other main parameters are listed in the signals tab.

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Figure 4.9 Intesis MAPS Signals tab

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4.2.7 Sending the configuration to Intesis
When the configuration is finished, follow the next steps.
1.- Save the project (Menu option Project->Save) on your hard disk (more information in Intesis MAPS User
Manual).
2.- Go to tab ‘Receive / Send’ of MAPS, and in Send section, press Send button. Intesis will reboot
automatically once the new configuration is loaded.
Figure 4.10 Intesis MAPS Receive/Send tab
After any configuration change, do not forget to send the configuration file to the Intesis using the Send
button in the Receive / Send section.
4.2.8 Diagnostic
To help integrators in the commissioning tasks and troubleshooting, the Configuration Tool offers some specific tools
and viewers.
In order to start using the diagnostic tools, connection with the Gateway is required.
The Diagnostic section is composed by two main parts: Tools and Viewers.
•Tools
Use the tools section to check the current hardware status of the box, log communications into
compressed files to be sent to the support, change the Diagnostic panels’ view or send commands to
the gateway.
•Viewers
In order to check the current status, viewer for the Internal and External protocols are available. It is
also available a generic Console viewer for general information about communications and the gateway
status and finally a Signals Viewer to simulate the BMS behavior or to check the current values in the
system.