UltraGas 2 Hoval CAN Bus Interface Installation Guide

Hoval products must be installed and commissioned by specialists only. These instructions are intended exclusively for the specialist. Electrical installation must be performed by a licensed electrical company.

Important notes

Intended use

The gateway module KNX is the connection point between the Hoval CAN bus and the KNX fieldbus.
The gateway module KNX enables users to access and operate the Hoval heating system via KNX.

These instructions describe how to connect, install, and commission the interface.
The KNX TP unit can be used as a programming interface for the ETS (3/4/5). Hoval does not offer any support if it is used for this purpose. Access via the Internet is also possible. Via KNXnet/IP tunneling, the unit can also be used as an interface for on-site visualizations. Hoval also does not offer any support for this function.

The IP settings can also be configured by the ETS software in the same way as the data points. The power is supplied externally or alternatively directly from a switch with delivery of Power over Ethernet (IEEE 802.3af).

Explanation of the symbols

Warnings

Technical information

Installation site

TopTronic® E gateway module KNX
There are two options for installing the gateway module KNX.
In var. 1, the interface is installed in the basement, and a long TP cable leads to the KNX network.
In var. 2, the interface is installed in the living area, and a 4-wire cable (Hoval CAN bus) leads to the basement.

The gateway module KNX is prepared for installation in the control panel or wall casing.

Connections of the gateway module KNX

Installation variant 1:
(standard design as supplied by the factory)

KNX TP input

Installation variant 2:

KNX TP input

Please note: If the module is being integrated into a network, the network settings must be compatible.

Back
On the back, the Hoval CAN bus connection to the heat generator can also be made using terminals.

CAN bus The terminals enable direct wiring to the Hoval CAN bus
CAN+ CAN bus data line
CAN- CAN bus data line 12 VDC 12 V electrical power supply via CAN bus (electrical power supply is already assured through the supplied mains adapter)
GND CAN bus earth
The earth must always be connected to all CAN bus subscribers.
This also applies when a mains adapter is used.

CAN pin assignment on RJ45

Displays and controls of the gateway module KNX
The gateway module KNX is equipped with the following displays and controls:

LED left “Power supply”
via CAN bus or external supply green
Middle LED, “CAN bus”
- Connecting to the CAN bus flashing blue
- Connection to the CAN bus established blue
- No connection to the CAN bus red
Right LED, “Network”
- No network connection / no Internet connection or general connection problem red
- No connection to HovalDesk and HovalConnect (there is an Internet connection in place, however) flashing red
- No time synchronization / no connection to NTP, or no authentication for encrypted connection possible Magenta (violet)
- HovalConnect is not authorized and no connection to HovalDesk Yellow
- HovalConnect is not authorized and connection to HovalDesk Alternating green/yellow (every 6 seconds)
- The only connection to HovalConnect (HovalConnect is authorized) blue
- The only connection to HovalDesk green
- Connection to HovalConnect and HovalDesk Alternating blue/green (every 6 seconds)
- Data logging active on USB stick flashing cyan

Gateway module KNX connection procedure

Connect heat generator (Hoval CAN bus)
Establish KNX connection (see Fig. 01)

Establish network connection (230 V) (see Fig. 01)

There is a danger of electric shock.
The heat generator can only be de-energized by disconnecting it from the mains (fuse).

The gateway can be connected to the CAN bus at any point on the bus system.
In doing so, ensure that the CAN bus is correctly terminated.

Expose the basic or controller module in the heat generator, wall housing, or control panel. See also “Technical Information Installation Instructions” in the “Electrical Connection” chapter.
Connect the Hoval CAN bus to a basic or controller module (chapter 2.2, Fig. 01).
Route the cable according to the “Technical Informa-tion Installation Instructions” in the “Electrical Connection” chapter.
The CAN bus cable must have strain relief applied.

Commissioning of the TopTronic® E gateway module KNX

TP….. Twisted Pair
ETS… Engineering tool software for setting the parameters by the KNX technician

Launch the TopTronic® E control module and select Main Menu > Service.

Service > TTE-GW > KNX > Settings > All data points > KNX name

The standard name “TopTronic® E gateway module KNX”
This should not be changed, because the default value of the 2-TTE KNX TP module corresponds to this value.
By default, the 2-TTE KNX TP modules is directly connected to the gateway module KNX via a network cable. In this case, the gateway module KNX must have a static IP assigned to it via the control module.
Service > TTE-GW > General > Gateway general > All data points > Internet access

Select network (= cable connection) and confirm with “OK”.
> Network is set as standard
Set fixed IP address:
- Set DHCP > No.
- Open IP address, enter a valid IP address, and confirm with “OK”.
- Open the subnet mask, enter the valid subnet mask, and confirm with “OK”.
- Open the default gateway, enter the valid IP address, and confirm with “OK”.
- Open and select Apply IP changes > Apply and confirm with “OK”.
  An IP mask that is permitted in the subnet must be entered even if the system does not have a default gateway.
If the 2-TTE KNX TP module is connected to the gate-way module KNX via a network with Da HCP server, DHCP can be activated on the gateway module KNX.
Set Service > TTE-GW > General > Gateway general > All data points > Internet access DHCP > Yes

When the connection has been established, the gateway is restarted; the control module continues to op-erate.
The KNX technician must contact the service technician for cthe correct parameter settings within the ETS.
The KNX technician must additionally be notified of the following settings:
- KNX name
- With a static set IP configuration:
  - IP address
  - IP subnet
  - IP gateway
- With activated DHCP:
  - DHCP active
The 2-TTE KNX TP module must be disconnected from the gateway module KNX (network).
The 2-TTE KNX TP module must be connected to the KNX ETS computer via Ethernet (KNX/IP BAOS socket).

Next, the 2-TTE KNX TP module must be parameterized and programmed using a KNX technician with the ETS software.
Following the programming procedure, the 2-TTE KNX TP module must be restarted (switch off the electrical power supply so the LEDs are no longer illuminated, then wait 10 seconds and switch back on).
The 2-TTE KNX TP module must be reconnected to the gateway module KNX via a network.

Data point list / ETS database

The following database and datapoint list apply to ETS 5 and higher:
The data point list can be downloaded from the following link: https://www.hoval.com/medias/TTE-GW-KNX-datapoints-ext.xlsx
The ETS database can be downloaded from the following link: https://www.hoval.com/medias/TTE-GW-KNX-database-ext.zip

The integration of a HomeVent® in a KNX sys-tem requires at least the ETS 5 with the corre-sponding database. If data points are written as percentages, values greater than 100 % are written as 0 on the KNX bus.

Settings in the ETS

The ETS (management data) must be updated to the current status.
A device name must be configured within the ETS. This must be given the same name on the gateway module KNX under Service > TTE-GW > KNX > Settings > Set-tings > KNX Name.
The names are the same by default.

In the settings of the IP configuration, it is possible to assign either DHCP (router assigns the address) or a manual IP address.
The flags of the objects from 2-TTE KNX TP may have to be configured for the particular application in the ETS (e.g.: KNX TP-display).

Communication settings:

A data point is selected by selecting a module. Then the bus address and the actual data points can be set in the parameters. The bus address of the modules is assigned during commissioning and can be read out using the con-trol module in the Service screen.

If required modules/data points have been set in the parameters, the application and/or the physical address can be programmed on the TopTronic® E KNX gateway in the usual way for ETS.

After the TopTronic® E KNX TP interface has been programmed using the ETS software, the device must be restarted (switch the elec-trical power supply on and off).

Extended settings

If the IP configuration of the TopTronic® E KNX TP interface is valid, the device can be used as a programming interface for ETS, for example.
The following setting are required for this:

In the main view of the ETS 4, the “Settings” menu item must be selected with the “Communication” sub-item. All available connections are listed under “Found connec-tions”. Once the required connection has been clicked, it can be selected using the corresponding button.
The TopTronic® E KNX TP interface supports up to 5 connections at the same time. A separate physical address is used for each connection.
The first additional physical address is allocated with the ETS. Clicking the “Settings” button for the selected con-nection displays the “Local settings” dialog box with a corresponding text box:

The other additional addresses can be assigned directly on the device. To do this, press the teach-in button for at least one second during operation. After that, the teach-in LED flashes and the address is assigned as follows:
Connection 2 is given the next higher address to connection 1, connection 3 the next higher address to connection 2, etc.
Example:
Device address 1.1.255 (device address in topology)
- Connection 1 1.1.250 (local settings)
- Connection 2 1.1.251 (activated by teach-in button)
- Connection 3 1.1.252 (activated by teach-in button)
- Connection 4 1.1.253 (activated by teach-in button)
- Connection 5 1.1.254 (activated by teach-in button)
The additional physical addresses must be from the address range of the sub-line in which the TopTronic® E KNX TP interface is located. They are not allowed to be used by another device.
In the delivery condition, only the additional physical address of the first connection is active. To use more connections at the same time, the addresses must be assigned as described above.

The object server is inactive if the ETS bus monitor is used via a KNXnet/IP tunneling connection! This means accesses via the object server are not possible.
This only concerns the ETS bus monitor mode. This restriction does not apply when the ETS group monitor is used.
The teach-in button (3) must be pressed for programming the physical address.

Reset to factory settings
It is possible to reset the 2-TTE KNX TP module to its factory settings.

Reset to factory settings:

Disconnect the electrical power supply from the 2- TTE KNX TP module

Press and hold the teach-in button (3).
Restore the electrical power supply to the 2-TTE KNX TP module.
Press and hold the teach-in button (3) for another 6 seconds at least.

All LEDs (4, 5, 6) flash briefly to indicate that the factory reset has been performed successfully

Technical data

Electrical safety
- Protection class (according to EN 60529): IP 20
- Complies with EN 50491-3
- Safety extra-low voltage SELV 24 V DC
EMC requirements
- Complies with EN 61000-6-2, EN 61000-6-3, EN 50491-5-1, EN 50491-5-2 and EN 50491-5-3
- According to EMC Directive (residential and functional building)
Environmental conditions
- Ambient temp. during operation: 0 to +45 °C
- Storage temperature: -20 … +60 °C
- Rel. humidity (not condense.): 20 % to 80 %

Approval
KNX
Mechanical data
- Housing: plastic
- Mounted on top-hat rails (approx. 160 cm × 110 cm)
- Weight: approx. 500 g
Operating elements
Teach-in button for KNX

Display elements
- Teach-in LED (red)
- LED indicator (green) for KNX
- LED indicator (green) for LAN
KNX
Communication objects acc. to Hoval data point list
Ethernet
- 10BaseT (10 Mbit/s)
- Supported Internet protocols ARP, ICMP, IGMP, UDP/
IP, TCP/IP, DHCP and Auto IP
- Up to 5 connections possible at the same time using
KNXnet/IP tunneling
- KNX BAOS binary protocol V2.0
- KNX BAOS web services (JSON)
Electrical power supply
- External supply: 12 V DC
- Power consumption: < 800 mW
Connections
- KNX connection terminal
- RJ45 LAN connector
- Screw terminals for supply voltage

Hoval quality.

You can count on us.

Hoval is one of the leading international companies for heating and indoor climate solutions. Drawing on more than 75 years of experience and beneﬁ ting from a close-knit team culture, the Hoval Group delivers exciting solutions and develops technically superior products. This leadership role requires a sense of responsibility for energy and the environment, which is expressed in an intelligent combination of different heating technologies and customized indoor climate solutions.
Hoval also provides personal consultations and comprehensive customer service. With around 2500 employees in 15 companies around the world, Hoval sees itself not as a conglomerate, but as a large family that thinks and acts globally.
Hoval heating and indoor climate solutions are currently exported to more than 50 countries.

Responsibility for energy and environment

Liechtenstein
Hoval Aktiengesellschaft 9490 Vaduz
+423 399 24 00
hoval.com

United Kingdom
Hoval Ltd.
Newark Notts. NG 24 1JN+44 1636 672 711 hoval.co.uk

Hoval Aktiengesellschaft | 9490 Vaduz | Liechtenstein | hoval.com

FAQ

Q: Can I install the product myself?

A: No, Hoval products must be installed and commissioned by specialists only to ensure proper functioning and safety.

Q: What is the purpose of the gateway module KNX?

A: The gateway module KNX acts as a bridge between the Hoval CAN bus and the KNX fieldbus, allowing users to control the heating system via KNX.

Documents / Resources

Hoval UltraGas 2 Hoval CAN Bus Interface [pdf] Installation Guide
125, 1550, UltraGas 2 Hoval CAN Bus Interface, UltraGas 2, Hoval CAN Bus Interface, CAN Bus Interface

References

User Manual

UltraGas 2 Hoval CAN Bus Interface

Specifications