5WG1257-3AB42 - Siemens - Datasheet.Live

GAMMA instabus

Technical Product Information

March 2008

AP 257/41 Wind sensor 5WG1 257-3AB41

Siemens AG AP 257/41, 4 pages Technical Manual

Industry Sector, Building Technologies

Electrical Installation Technology © Siemens AG 2008 Update: http://www.siemens.com/gamma

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

2.13.5.1/1

Product and Applications Description

The AP 257/41 wind sensor contains the sensor and the

electronic systems for wind data analysis and bus inter-

facing in one compact enclosure.

The wind speed can be sent to the bus in the EIS5 format

and monitored respectively for up to 3 limit values. Limit

values can be selected as parameters or as communica-

tion objects. Additionally the maximum wind speed can

be recorded, stored, requested and reset.

In addition, 8 AND-gates and 8 OR-gates are available

with 4 inputs each for logical combinations. If the wind

speed is measured at different locations / facades the

logic gates may be used e.g. for the logical combination

of the wind alarms from several wind sensors to an over-

all alarm.

The voltage supply of the electronics takes place via AC

20 V or DC 24 V safety extra-low voltage (SELV). For the

transmission of this voltage, the white / yellow twisted

pair of the bus cable can be used.

Application Program

The AP 257/41 wind sensor has to be used together with

the application program “0701 CO wind sensor 910101”

which can be configured and loaded with the Engineer-

ing Tool Software (ETS) from version ETS2 V1.3. But it is

recommended to use the engineering tool software

ETS3, since it presents a graphically optimal display of

the setting menus of the wind sensor.

Installation Instructions

If the wind sensor should be damaged, it must not be

commissioned.

V WARNING

• The device must be mounted and commissioned by an

authorised electrician.

• For planning and construction of electric installations,

the relevant guidelines, regulations and standards of

the respective country are to be considered.

Technical Specifications

Sensors

• Wind sensor:

- Measuring range: 0 ... 70 m/s

- Resolution: < 10% of the measuring range

Voltage supply

• Bus voltage: via the bus line

• Bus current: 9 mA

• Sensor electronics: AC 20 V +10% 50/60 Hz or DC 24 V

+ 10% max. 110 mA, residual ripple < 10%, max. per-

missible cable length 100 m

• Power consumption: at AC 20 V: max. 2.2 VA;

at DC 24 V: max. 2.64W

Connections

• Voltage supply: plug terminals for solid conductors or

finely stranded conductors 0.5 ... 1.5mm²

• Bus connection: screw-less bus terminal, single-core

0.6...0.8 mm ∅ single-core, insulation strip length 5 mm.

Mechanical data

• Housing: plastic

• Dimensions: approx. 118mm x 96mm x 77mm (LxWxH)

• Weight: approx. 145 g

• Mounting: Mast or wall mounting

Electric safety

• Protection type (according to EN 60529): IP44

• Bus: safety extra low voltage (SELV) DC 24 V

• Device complies with EN 50090-2-2

EMC requirements

• complies with EN 50090-2-2

Environmental conditions

• Ambient temperature during operation: - 30 ... + 50 °C

• Storage temperature: - 20 ... + 70 °C

• rel. humidity (not condensing): 5 ... 93 %

Markings

KNX EIB

CE mark

complies with the EMC regulations (residential and func-

tional buildings), and low voltage regulations

GAMMA instabus

Technical Product Information

March 2008

AP 257/41 Wind sensor 5WG1 257-3AB41

Technical Manual AP 257/41, 4 pages Siemens AG

Industry Sector, Building Technologies

Update: http://www.siemens.com/gamma © Siemens AG 2008 Electrical Installation Technology

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

2.13.5.1/2

Location and Function of the Display and Operat-

ing Elements

Figure 1

1 Slot for cable connection to the lid of the enclosure

2 Plug terminal for voltage supply AC 20 V / DC 24 V

3 Opening for voltage supply cable

4 Opening for bus cable

5 Slot for bus terminal

6 Commissioning button: for switching over between

normal mode / addressing mode

7 Commissioning LED: for display of normal mode /

addressing mode (off / on)

Mounting and wiring

Location

Select a position on the building where wind can be

recorded by the sensor without impairment. There must

be at least 60 cm free space under the wind sensor to

allow for correct wind measurements and to prevent the

sensor being snowed in case of snow.

The wind sensor must be mounted on a mast or a vertical

wall (see fig. 2) and be aligned horizontally across (see

fig. 3).

Figure 2

Figure 3

Mounting

The supplied combined wall / mast holder is fixed at the

rear of the enclosure on delivery.

To remove it, please use a screwdriver and remove the

holder on the right and the left, as shown in figs. 4 and

5. Slide the holder out towards the bottom.

Figure 4

Figure 5

Mounting on a wall:

Fasten the holder vertically with the even side to the

wall, with the crescent-shaped bar to the top (see fig. 6).

Figure 6

GAMMA instabus

Technical Product Information

March 2008

AP 257/41 Wind sensor 5WG1 257-3AB41

Siemens AG AP 257/41, 4 pages Technical Manual

Industry Sector, Building Technologies

Electrical Installation Technology © Siemens AG 2008 Update: http://www.siemens.com/gamma

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

2.13.5.1/3

Mounting on a mast / pole:

Fasten the holder vertically with the curved side to the

mast / pole and the bar to the bottom (see fig. 7).

Figure 7

View of the rear wall and drilling scheme:

Dimensioning of the rear of the enclosure with holder:

see fig. 8, Drilling scheme: see fig. 9.

Figure 8

Figure 9

Preparing the wind sensor:

The lid of the wind sensor is slotted in on the right and

the left at the lower edge. Remove the lid from the wind

sensor (see fig. 10).

Figure 10

Be careful not to tear open the cable connection be-

tween the circuit board in the bottom part and the circuit

board in the lid (cable with plug).

Guide the bus connection through the rubber seals at the

bottom part of the wind sensor and connect the wire

pairs for the voltage supply and the bus to the provided

terminals while taking polarity into account (see fig. 2).

Fastening the wind sensor:

Close the enclosure by putting the lid over the lower

part. The lid must snap into place on the left and the

right with a clear “click”. Check that the lid and lower part

are properly snapped into place! Fig. 11 shows the cor-

rectly closed wind sensor from below.

Figure 11

Now slide the enclosure into the mounted holder from

above. The pegs of the holder must slot into the rails of

the enclosure (see fig. 12).

Figure 12

If needed, the wind sensor can be pulled out of the

holder in an upwards direction.

Caution:

Do not open the wind sensor if water (rain) can get into

the inside. A few drops are enough to damage the elec-

tronics.

Take care that the connections are correctly made. A

wrong connection can destroy the electronics of the

wind sensor.

During assembly care should be taken that the tempera-

ture sensor (small circuit board on the lower part of the

enclosure) is not damaged. The cable connection be-

tween the circuit board in the bottom part and the circuit

board in the lid may not be torn off or bent while making

the connection.

The wind measurement value is first transmitted 60

seconds after initiating the supply voltage.

GAMMA instabus

Technical Product Information

March 2008

AP 257/41 Wind sensor 5WG1 257-3AB41

Technical Manual AP 257/41, 4 pages Siemens AG

Industry Sector, Building Technologies

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

2.13.5.1/4

Maintenance

The wind sensor should be regularly checked (twice

per year) for soiling and cleaned if necessary. In case

of strong pollution, the wind sensor may cease to

function.

During maintenance and cleaning, the wind sensor

should always be separated from the bus and the

supply voltage for safety purposes.

General Notes

• Any faulty devices 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

Space for notes