Siemens N148/23 User manual

A6V11689764_en
--_c
Smart Infrastructure
2020-12-18
GAMMA instabus
GAMMA instabus
IP interface secure
N148/23
IP Interface Secure is used for communication between KNX devices and PCs or
other devices with an Ethernet interface and for remote access to a KNX installation.
●
Easy to connect to higher-level systems by using the internet protocol (IP)
●
LED displays for operational readiness, KNX communication and IP
communication
●
Easy and secure configuration using ETS
●
Easy to connect to visualization systems and facility management systems

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Function
Functions of IP Interface Secure
IP Interface Secure is a rail-mounted device for installation in distributions. The device uses
the KNXnet/IP standard and acts as an interface to KNX/EIB via data networks using the
internet protocol (IP). To do so, this device enables bus access from a PC or other data
processing devices.
Connections and power supply
The connection to KNX is established using a bus connector terminal (black and red
terminals). The connection to the data network (IP via 10 or 100BaseT (depending on the
switch)) is established using an RJ–45 socket.
IP Interface Secure also needs operating voltage in order to operate. IP Interface Secure can
obtain this operation voltage via the network line using “Power over Ethernet” as per IEEE
802.3af. Alternatively, the operating voltage can be obtained via the second terminal block
(white-yellow terminals) from an AC/DC 24 V safety extra low voltage supply or from a bus
voltage supply (unchoked voltage, DC 29 V). As soon as the safety extra low voltage supply
is connected to the second terminal block, operating voltage is drawn from it.
Remote access
Even if there is no direct network connection between a PC and an IP interface, you can use
a suitable network infrastructure for remote access to a KNX installation. Five simultaneous
connections (remote accesses) are possible.
Secure remote access
Additional functions
IP Interface Secure has the following attributes:
●Easy to connect to higher-level systems by using the internet protocol (IP)
●Direct access to the KNX installation from every point in the IP network (KNXnet/IP
tunneling)
●Up to five KNXnet/IP tunneling connections are possible at the same time
●LED displays for operational readiness, KNX communication and IP communication
●Easy and secure configuration using ETS
●Easy to connect to visualization systems and facility management systems
●Slot for SD card (not in use)

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Security functions of IP Interface Secure
IP Interface Secure supports the “KNX IP Secure” security standard and offers the following
security functions, among others:
●Secured access only from authenticated devices
●Secure commissioning via ETS
During secure commissioning via ETS, the device certificate printed onto the device (FDSK =
Factory Default Setup Key) is imported and stored for this exact device in the ETS project.
For more information on KNX IP Secure, refer to the ETS software help or go to the
following website: https://support.knx.org
Alternatively, insecure commissioning without KNX IP Secure is also possible. In this case,
the device is insecure and responds like other KNX devices without IP Secure.

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Technology
Position and function of the connections, operating and display elements
1
2
3
4
5
7
6
8
9
IP Interface Secure LEDs and connections
Pos. no.
Element
Function
1 Connection terminals for
additional power supply,
screwless
They supply the device with power if there is no
power supply via the RJ-45 connection (Power
over Ethernet).
2 KNX bus terminal blocks,
screwless
KNX bus connection
3 LED status display
Button: Learning mode
Short press of button (< 1 s):
Display status (LED on = active)
Very long push of button (> 20 s):
Reset to factory settings (LED starts blinking
after 20 s)
4 LED “Rx” LED lights up if data is received via the RJ-45
connection (Ethernet)
5 LED “Tx” LED lights up if data is sent via the RJ-45
connection (Ethernet)
6 LED “LINK” LED lights up as soon as there is a connection
via the RJ-45 (Ethernet) connection
7 LED “Tx / Rx KNX” LED lights up when telegrams are sent or
received via the KNX bus
8 LED “RUN” LED lights up as soon as power supply is
established and the device is ready for
operation
9 RJ-45 connection Connecting the device to the network

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GAMMA instabus
2020-12-18
Location of the device certificate QR code
Device certificate
The QR code of the device certificate is affixed to the device as a sticker. There is a
duplicate QR code, which can be removed for easy commissioning.

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Type overview
Type
Description
Order number
N 148/23 IP Interface Secure 5WG1 148-1AB23
Version of the Engineering Tool Software and application program
Application
Version
Engineering Tool Software (ETS) ETS 5.7.3 and up
Product documentation and support
Product documentation
Documents belonging to the product, such as operating and assembly instructions,
application description, product database, additional software and CE declarations can be
downloaded from the following website:
http://www.siemens.com/gamma-td
Frequently asked questions
For frequently asked questions about the product and their solutions, see:
https://support.industry.siemens.com/cs/ww/en/ps/faq
FAQ
Support
Contact details for additional questions relating to the product:
Tel.: [phone]
Fax: [phone]
Email: [e-mail]
http://www.siemens.com/supportrequest

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Notes
Safety
CAUTION
National safety regulations
Failure to comply with national safety regulations may result in personal injury and property
damage.
●Observe national provisions and comply with the appropriate safety regulations.
If you pass on the device, ensure you also pass on the documentation for the device, such
as, the operating instructions.
Notes on secure data transfer
●Operate device only in secure mode.
●Only connect the device to the internet in secure mode.
The device is in secure mode if the device has been commissioned using secure
commissioning, secure tunneling has been activated, and strong and different passwords
are used.
Possible additional security measures include:
●Only operate the device in secure mode in a safe network environment.
●Set up a separate IP network with its own hardware for KNX communication.
●Use user IDs and strong passwords to restrict access to the (KNX) IP network.
●If the device is operated in insecure mode, additionally protect remote access to the
device by using a VPN connection.
(A virtual private network (VPN) establishes an encrypted and authorized connection
(VPN tunnel) from a remote connection to a network via the internet. This VPN
connection enables secure communication protected from eavesdropping between a
remote device and the KNX installation.)
●If Wi-Fi is used, change the preset SSID of the wireless access point. Encrypt the Wi-Fi
using a secure procedure (such as WPA2 at present).
●Document network settings and give them to the building owner/operator or LAN
administrator.
●Coordinate the administration of access rights to this KNXnet/IP device in an IP network
with the respective IP network administrator.
Measures after replacing a device in the network
If an IP Router Secure or an IP Interface Secure in secure mode is stolen from a network or
replaced due to a defect, secure commissioning has to be repeated for all other devices in
the network. To do this, deactivate the“Secure commissioning“ option for each device in the
settings of the project, activate the option again and load the data to the devices again.
(There is no need to load the data into the device between deactivation and reactivation.)
Secure commissioning has to be repeated because it is not possible to exclude the
possibility that the keys that are in the secure section of the device can be read.
Recommissioning has the effect that new keys are generated and the old keys become
worthless. The removed device no longer works in the network.
More information on KNX security
For more information on KNX security, including, for example, a security check, refer to the
“KNX Secure” section on the KNX website (http://www.knx.org).

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Connection
Areas of use
The device can be used for fixed installations in interior spaces, for installations in dry
locations, within distribution boards or small casings with DIN rails EN 60715-TH35.
●Electrical expertise is required for the installation.
●The installation must be performed by a specialist.
●Do not open the casing of the device.
Incorrect installation can deactivate electrical safety features without this being
apparent to a lay person.
Ethernet RJ-45 connection
1
KNX 24 VDC type SELV connection
2
3
BLACK - RED +
5...6 mm
1
Power supply connection AC 16…24 V, DC 16…30 V
3
WHITE- YELLOW +
5...6 mm
1
2

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Checks
Checking the power supply via Ethernet (PoE) / Ethernet RJ-45 and KNX
4
< 1 s
3
LED OFF
7
6
< 1 s
5
LED ON
Tx / Rx KNX
RUN
LINK
Tx
Rx
ETHERNET
1
2
RUN
2
LINK
Checking the power supply via the terminal block (yellow and white)
Tx / Rx KNX
RUN
LINK
Tx
Rx
ETHERNET
7
< 1 s
LED OFF
10
9
< 1 s
8
LED ON
Tx / Rx KNX
RUN
LINK
Tx
Rx
ETHERNET
4
5
RUN
5
LINK
3
RUN
1
2
6
Resetting the device to factory settings
NOTICE
Loss of data due to resetting device!
When you reset the device, all parameters and settings entered are deleted.
●Ensure that the device is really supposed to be reset.
Resetting the device to factory settings
Press the Learn button (at least 20 seconds) until the programming LED starts flashing
quickly.
The programming LED flashes for 8 seconds.
The device has been reset to factory settings. All parameter settings have been deleted.

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Disposal
Defective devices can be returned to the appropriate sales office with a return delivery note.
To do this, contact support: Product documentation and support [➙ 6]
The device is considered an electronic device for disposal in accordance
with the European Guidelines and may not be disposed of as domestic
garbage.
●Dispose of the device through channels provided for this purpose.
●Comply with all local and currently applicable laws and regulations.
Update
Do not interrupt power supply to the device while the data on the device is being updated!

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Technical data
Interfaces
Network communication
Standard for interfaces Ethernet
Internet protocols supported ARP, ICMP, IGMP, TCP/IP, UDP/IP, DHCP,
AutoIP
KNXnet/IP as per KNX system
specification
Core v2, Tunneling v2, Device Management,
IP Secure, Data Security
Power supply
Power supply
KNX bus voltage DC 24 V (DC 21…30 V)
KNX power consumption 4 mA
Auxiliary power supply
From “Power over Ethernet” DC 48 V (as per
IEEE 802.3af) max. 1.7 W
Alternatively, from external operating voltage
AC/DC 24 V (AC 16. 24 V, DC 16…30 V)
max. 1.7 W (57 mA at DC 24 V)
Recommended power supplies Unchoked voltage from KNX power supplies
N 125
Power loss (internal consumption) 1.7 W
Physical specifications
Physical specifications
Housing material Plastic
Dimensions Dimensions [➙ 14]
Weight (device) approx. 100 g
Fire load 3 MJ
Ambient conditions
Ambient conditions
Ambient temperature during operation
minimum
-5 °C
Ambient temperature during operation
maximum
+45 °C
Storage temperature
minimum
-25 °C
Storage temperature
maximum
+70 °C
Transport temperature
minimum
-25 °C
Transport temperature
maximum
+70 °C

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Ambient conditions
Relative humidity
(non-condensing)
minimum
5 % r.h.
Relative humidity
(non-condensing)
maximum
90 % r.h.
Climatic resistance EN 60721-3-3 class 3k5
Protection settings
Protection settings
Degree of pollution (according to IEC 60664-
1)
2
Overvoltage category (according to IEC
60664-1)
III
Protection type IP IP20
Electrical safety, bus Safety extra low voltage
Standard for which the device meets the
requirements (electrical safety)
EN 50491-3:2010
Standard for which the device meets the
requirements (EMV)
EN 50491-5-1
EN 50491-5-2
EN 50491-5-3
EN 61000-6-1
EN 61000-6-2
EN 61000-6-3
Reliability
Reliability
Failure rate (at 40°C) 489 fit

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Connection examples
Power supply Power over Ethernet
PoE switch
Ethernet
KNX power supply
IP Interface Secure
KNX
IEEE 802.3af
Example: Power supply via Power over Ethernet (PoE)
Connection with separate power supply
Switch
Ethernet
KNX
power supply
IP Interface Secure
KNX AC 16...24 V
DC 16...30 V
Example with separate power supply
Power supply via KNX
Switch
Ethernet
KNX power supply
IP Interface Secure
KNX
DC 29 V
Example with unchoked bus power supply

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2020-12-18
Issued by
Siemens Switzerland Ltd
Smart Infrastructure
Global Headquarters
Theilerstrasse 1a
CH-6300 Zug
Tel. [phone]
www.siemens.com/buildingtechnologies
© Siemens Switzerland Ltd, 2020
Technical specifications and availability subject to change without notice.
Document ID A6V11689764_en--_c Technical product information
Edition 2020-12-18
Dimensions
90 mm
[3.54 in]
36 mm
[1.42 in]
2 HP
61 mm
[2.40 in]
44 mm
[1.73 in]
55 mm
[2.17 in]
Dimensions
HP Horizontal pitch
1 HP = 18 mm