Siemens AP 257/41 Technical Product Information

AP 257/41 Wind sensor
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.
Siemens AG
Industry Sector, Building Technologies
Electrical Installation Technology
P.O.Box 10 09 53, D-93009 Regensburg
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
AP 257/41, 4 pages
© Siemens AG 2008
Subject to change without prior notice
GAMMA instabus
Technical Product Information
March 2008
5WG1 257-3AB41
Technical Manual
Update: http://www.siemens.com/gamma
2.13.5.1/1