5WG1125-1AB01 - SIEMENS - Product.Network

GAMMA instabus

Technical Product Information

November 2008

Power Supply Unit N 125

N125/01 (160 mA / with integrated choke) 5WG1 125-1AB01

N125/11 (320 mA / with integrated choke) 5WG1 125-1AB11

N125/21 (640 mA / with integrated choke) 5WG1 125-1AB21

Siemens AG N 125, 4 pages Technical Manual

Industry Sector, Building Technologies

Business Sector - Electrical Installation Technology © Siemens AG 2008 Update: http://www.siemens.de/gamma

P.O.Box 10 09 53, D-93009 Regensburg Subject to change without prior notice

2.14.4.3/1

Product and Applications Description

The power supply unit N 125 provides the system power

necessary for the instabus EIB. The connection to the

bus line is established by clicking the device onto the

DIN-rail (with a data rail installed) and/or via the bus

connection block located on the front side. If the power

supply N 125 is installed the bus connector module

REG 191 is not necessary (also for other DIN-rail devices

connected to the same data rail) because the bus

voltage is carried from the bus connection block to the

data rail.

The integrated choke prevents the data telegrams from

short-circuiting on the bus line. When the built-in reset

switch is operated (operation > 20s), the bus devices are

returned to their initial state.

For each bus line, at least one power supply unit N 125

is needed. Up to two power supply units may be

attached to a single bus line. Note: With the power

supply unit N125/21 no second power supply unit is

permitted to be run in parallel on the bus line.

A second unit is not required unless the supply voltage

at a bus device is less than 21 V. The cable length

between the two power supply units must be at least

200 m.

When more than 30 bus devices are installed in short

bus cable distance (e.g. 10 m), e.g. in distribution

boards, the power supply unit N 125 should be

arranged near these bus devices. The distance between

power supply unit N 125 and any of its bus devices must

not exceed 350 m.

The power supply unit N 125 has a voltage and current

regulation and is therefore short-circuit proof. Short

power failures can be bridged with a backup interval of

approximately 200 ms.

To ensure an uninterrupted power supply a separate

circuit with safety separation should be used for the

power supply unit N 125's power supply line.

The power supply unit N125/21 can supply DC 24 V

power from an additional pair of terminals (yellow-

white). This DC 24 V output voltage can be used to

power e.g. an additional line via a separate choke

N 120. The total current provided by the N125/21 shall

not exceed 640mA.

Application Programs

Requires no application programs

Example of Operation

power supply

unit N

125/01

connector

N 191

line

instabus EIB

unit N 125/21

line-/backbone

coupler N

140/3

connector

REG 191/01

line 1

N 140/3

connector

REG 191/11

line 2

DC 29V

(connection to

DC 29 V of N 125/21)

choke

N 120

(main line)

data rail:

outer printed conductors:

free

inner printed conductors:

bus line

power supply

data rail:

outer printed conductors:

free

inner printed conductors:

bus line

line-/backbone

coupler

data rail:

outer printed conductors:

DC 29 V

inner printed conductors:

bus line

L1 N PE

AC 120...230 V

Bus

L1 N PE

AC 120...230 V

DC 29 V

N125/11

GAMMA instabus

Technical Product Information

November 2008

Power Supply Unit N 125

N125/01 (160 mA / with integrated choke) 5WG1 125-1AB01

N125/11 (320 mA / with integrated choke) 5WG1 125-1AB11

N125/21 (640 mA / with integrated choke) 5WG1 125-1AB21

Technical Manual N 125, 4 pages Siemens AG

Industry Sector, Building Technologies

Update: http://www.siemens.de/gamma © Siemens AG 2008 Business Sector - Electrical Installation Technology

Subject to change without prior notice P.O.Box 10 09 53, D-93009 Regensburg

2.14.4.3/2

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 may be built into distribution boards

(230/400V) together only with appropriate VDE-

devices.

• 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.

• A safety disconnection of the device must be possible.

• 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.

• A device suspected faulty should be returned to the

local Siemens office.

Technical Specifications

Input voltage

• rated voltage: AC 120 … 230 V, 50...60Hz

• permissible range: AC 102 ... 253 V

Rated power intake

approx. 24 VA

Output voltage

• rated voltage: DC 29 V

• safety extra low voltage (SELV)

• permissible range: DC 28 ... 30 V

Output current

• rated current 160 mA (N125/01),

320 mA (N125/11),

640 mA (N125/21)

• short-circuit current:

limited to 1,0 A (N125/01, N125/11), 1,5 A (N125/21)

Backup interval

on input voltage failure: approximately 200 ms at rated

current

Operator elements

slide switch: for resetting the bus devices connected to

the line (operation > 20 s)

Display elements

• 1 red LED: for indicating a voltage interruption on

operating the slide switch in RESET-position

• 1 green LED: for indicating normal operation

• 1 red LED: for indicating a shorted-out bus line or

device over-load

Connections

• mains connection, screwless plug-in terminals:

strip insulation for 9 ... 10 mm

permissible conductor types/cross sections:

- 0,5 ... 3,3 mm² ( AWG 12) single core

- 0,5 ... 2,5 mm² plain flexible conductor

- 0,5 ... 3,3 mm² (AWG 12) stranded conductor

- 0,5 ... 3,3 mm² (AWG 12) flexible conductor with

terminal pin, crimped on gas tight

• bus line:

pressure contacts on data rail,

screwless extra low voltage terminal (red–black)

∅ 0,6 ... 0,8 mm

• output voltage (no choke) – N125/21 only:

screwless extra low voltage terminal (yellow-white)

∅ 0,6 ... 0,8 mm

Physical specifications

• housing: plastic

• dimensions: N-system DIN-rail mounted device,

width: 4 SU (1 SU = 18 mm)

• weight: approx. 240 g

• installation: rapid mounting on DIN rail according to

EN 60715-TH35-7,5

Electrical safety

• degree of pollution (according to IEC 60664-1): 2

• protection (according to EN 60529): IP 20

• bus: safety extra low voltage SELV DC 24 V

• device complies with EN 50 090-2-2, EN 61558-2-6

and EN 61558-2-17

Electromagnetic compatibility

complies with EN 50090-2-2

Environmental specifications

• climatic conditions: EN 50090-2-2

• ambient temperature operating: - 5 ... + 45 °C

• storage temperature: - 25 ... + 70 ° C

• relative humidity (non-condensing): 5 % to 93 %

GAMMA instabus

Technical Product Information

November 2008

Power Supply Unit N 125

N125/01 (160 mA / with integrated choke) 5WG1 125-1AB01

N125/11 (320 mA / with integrated choke) 5WG1 125-1AB11

N125/21 (640 mA / with integrated choke) 5WG1 125-1AB21

Siemens AG N 125, 4 pages Technical Manual

Industry Sector, Building Technologies

Business Sector - Electrical Installation Technology © Siemens AG 2008 Update: http://www.siemens.de/gamma

P.O.Box 10 09 53, D-93009 Regensburg Subject to change without prior notice

2.14.4.3/3

Certification

EIB KNX certified

UL listed

CE mark

complies with the EMC regulations (residential and

functional buildings), and low voltage regulations

Location and Function of the Display and

Operator Elements

A1 A2 A3

A8 A9

+ -

Figure 1: Location of the display and operator elements

A1 extra low-voltage bus terminals (red-black)

A2 reset switch

A3 extra low-voltage terminals (yellow-white)

– N125/21 only

A4 type plate

A5 red LED for indicating that the power supply unit

N 125 is in reset position

A6 green LED for indicating normal operation of the

power supply unit N 125

A7 red LED for indicating a shorted-out bus line or a

device over-load

A8 screwless plug-in terminals for connecting the

mains (mains terminals)

A9 ground terminal

Mounting and Wiring

General description

The N-system DIN-rail device can be installed to

N-system distribution boards, surface or flush mounted,

or to any DIN rail available that has a data rail installed.

The connection to the bus line is established by clicking

the device onto the DIN-rail (with a data rail installed).

Take care that the type plates of all devices on a DIN-rail

can be read in the same direction, guaranteeing the

devices are polarised correctly.

Connection to the bus without data rail

If the connection is established via bus connection block

(data rail not installed) the data rail connection system

has to be covered with the enclosed insulation hood

after removing the guiding hood e.g. with a screw

driver to guarantee a sufficient insulation from the DIN

rail.

Removing the guiding top (Figure 2)

- The guiding top (D3) surrounds the contact system

(D2) on the back side of the device (D1).

- Insert the screw driver between the DIN-rail device

(D1) and the guiding hood (D3) and remove the

guiding hood.

Inserting the insulation top (Figure 2)

- Put the insulation top (D4) onto the contact system

and click it into place by a slight pressure.

D1 D2 D2

D4 D1

Figure 2: Mounting and dismounting a DIN-rail device

GAMMA instabus

Technical Product Information

November 2008

Power Supply Unit N 125

N125/01 (160 mA / with integrated choke) 5WG1 125-1AB01

N125/11 (320 mA / with integrated choke) 5WG1 125-1AB11

N125/21 (640 mA / with integrated choke) 5WG1 125-1AB21

Technical Manual N 125, 4 pages Siemens AG

Industry Sector, Building Technologies

Subject to change without prior notice P.O.Box 10 09 53, D-93009 Regensburg

2.14.4.3/4

Connecting mains (figure 3)

- The mains are connected via screwless plug-in

terminals (E1).

- Remove approx. 9 to 10 mm of insulation from the

wire (E2) and plug it into the terminal (E1).

Disconnecting the mains (figure 3)

- Press the terminal lock (E3) of the terminal (E1) with a

screw-driver and

- remove the wire (E2) from the terminal (E1).

9 ... 10 mm

Figure 3: Connecting and disconnecting wires

Slipping on of the safety extra low voltage block

− slip the connection block onto the guide slot and

− press the connection block down to the stop

Connecting the safety extra low voltage block (figure 4)

− The connection block (F2) can be used with single

core conductors Ø 0,6 ... 0,8 mm.

- The connection block (F2) consists of a red (yellow)

connector (F2.1) and a black (white) connector

(F2.2). Each connector can take up to four wires with

single core conductors Ø 0,6 ... 0,8 mm.

− Remove approx. 5 mm of insulation from the

conductor (F2.4) and plug it into the connection block

(F2) (red = +, black = -).

Disconnecting the safety extra low voltage block

(figure 4)

- Unplug the connection block (F2) and remove the bus

cable conductor (F2.4) while simultaneously wiggling

it.

F2.1 F2.2

F2.3 F2 F2.4

5 mm

F2.4

Figure 4: Connecting and disconnecting

safety extra low voltage block

Dimension Diagram

Dimensions in mm

b = 4 SU

1 Standard unit (SU) = 18 mm

General notes

• Any faulty device should be returned to the local

Siemens office.

• If you have further questions concerning the product,

please contact our Technical Support:

! +49 (0) 180 50 50-222

! +49 (0) 180 50 50-223

! www.siemens.com/automation/support-request