User Manual
GAMMA instabus
Technical Product Information
August 2014
IP Interface N148/22 5WG1 148-1AB22
Siemens AG N 148/22, 7 pages Technical Manual
Infrastructure & Cities Sector, Building Technologies
Control Products and Systems ã Siemens AG 2014 Update: http://www.siemens.com
P.O.Box 10 09 53, D-93009 Regensburg Subject to change without prior notice
2.11.1.14/3
Installation Instructions
· The device may be used for permanent interior
installations in dry locations within distribution boards
or small casings with DIN rail EN 60715-TH35-7,5.
V
WARNING
· The device must be mounted and commissioned by
an authorised electrician.
· Free DIN rail areas with sticked-in data rails must be
covered with covers, order no. 5WG1 192-8AA01.
· The prevailing safety rules must be heeded.
· The device must not be opened.
· For planning and construction of electric installations,
the relevant guidelines, regulations and standards of
the respective country are to be considered.
Technical Specifications
Network communication
· Ethernet:
10BaseT (10 Mbit/s)
· Supported Internet Protocols:
ARP, ICMP, IGMP, UDP/IP, DHCP, AutoIP
· KNXnet/IP according to KNX System Specification:
Core, Routing, Tunneling, Device Management
Rated voltage
· Bus: DC 24V (DC 21...30V)
· Auxiliary power supply:
from “Power over Ethernet” DC 48V (acc. to IEEE
802.3af)
max. 0,8W
alternatively from
external power supply AC/DC 24V
(AC 12…24V, DC 12...30V)
max. 1,7W (57mA @ DC 24V)
Power supply
· Bus voltage: via KNX/EIB bus line
· Operating voltage:
from “Power over Ethernet” according to IEEE
802.3af, nominal voltage DC 48V
alternatively, from external SELV power supply
AC/DC 24V nominal,
permissible input voltage range:
AC 12…24V, DC 12 ... 30 V
· Recommended power supplies:
DC 29V (before choke) from KNX/EIB power supply
N125/21
Power supply unit 4AC2 402
Primary voltage AC 85-265V / DC 85-300V,
Secondary voltage DC 24V, 2MU width
safety transformers 4AC3 724-0
Primary voltage AC 230VSecondary voltage AC 12V,
3MU width
safety transformers 4AC3 740-1
Primary voltage AC 230V Secondary voltage AC 12V
24V, 5MU width
V
CAUTION
· It is recommended to use the external safety extra low
voltage power supply for the IP Interface N148/22
only.
Power usage
· From the bus line: max. 10mA @ DC 29V
· From the auxiliary power supply: max. 1,7W
(57mA @ DC 24V)
Control elements
1 learning button:
for switching between normal operating mode and
addressing mode
Display elements
· 1 green LED: device ready (ON)
· 1 yellow LED: Communication on bus line
· 1 green LED: Ethernet Link Signal available (Lk)
· 1 yellow LED: Receiving data from Ethernet (Rx)
· 1 red LED: Transmitting data to Ethernet (Tx)
· 1 red LED: for monitoring bus voltage and displaying
mode, selected with the learning button