Data Sheet for Product

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Building Technologies Data sheet KNX bus CE1N3127en
HVAC Products 18.02.2008
Power supply units for KNX networks without IP router.
Ordering: 5WG1 125-1AB01, short description N125/01, power output 160 mA.
5WG1 125-1AB11, short description N125/11, power output 320 mA.
Data: Operating voltage AC 120…230 V, 50…60 Hz.
Bus supply output DC 29 V (21…30 V, with choke).
Notes: Both types feature an integrated choke. Both types may concurrently
supply a line. Adhere to the min. distance of 200 meters between two
power supply units.
Power supply unit for KNX networks with
IP router.
Ordering: 5WG1 125-1AB11, short description N125/21, power output 640 mA.
Data: Operating voltage AC 120…230 V, 50…60 Hz.
Bus supply output DC 29 V (21…30 V, with choke).
Auxiliary voltage output for IP router DC 24 V (12…30 V, without choke).
Note: Do not use this type for parallel line supply.
Complex, large networks require area and line couplers based on the following two
main reasons:
• KNX network comprises more than 64 bus devices.
• Permissible network size exceeded without couplers.
A network with area and line couplers allows for establishing "communication islands"
aimed at keeping as low as possible any cross-area or cross-line data traffic.
Ordering: 5WG1 140-1AB13, short description N140/13.
Bus connection to main line and line via terminals.
IP
1)
routers are required when you need to connect a KNX network to an IP network.
The IP router in terms of device features is not identical to area/line couplers. Rather
than coupling within KNX, a coupling "KNX - IP network" is created. Here, an IP router
connects a KNX area or KNX line to an IP network.
1)
IP = Internet protocol: Network protocol for data traffic, routing and internetworking for global
addressing.
Ordering: 5WG1 146-1AB01, short description N146
Bus connection via terminals, IP network connection via RJ45 plug.
See www.automation.siemens.com/et/gamma/
for information on Siemens power
supply units, area/line couplers, and IP routers.
Adhere to local regulations on lightning protection and equipotential bonding.
Depending on the probability of exposure to lightning or overvoltage, consider complex
overvoltage protection measures covering bus devices and supply and signal lines (e.g.
for outdoor sensors).
See document P3127 for more information on lightning and overvoltage protection.
Siemens
power supply units
Area and line couplers
Siemens
area/line coupler
IP router
Siemens IP router
Lightning and over-
voltage protection