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