Siemens AVS74 - Technical Data

9
Technical data
QAA74
82
Siemens Graphical User Interface UI400 CE1U2348en
Building Technologies 2014-06-03
9 Technical data
9.1 QAA74
Power supply Via bus (2-wire) Bus power BSB
Via controller (3-wire) DC 12 V (to connection G+ on the controller)
With external power supply (3-wire)
- Power consumption
- Power limitation (external power
supply)
DC +12 V SELV
36 mA
1 A
Wiring of terminals Power supply and bus Solid wire or stranded wire (twisted or ferrule).
0.25…1.5 mm
2
NOTICE
Overload during short circuit.
Incorrectly sized cable cross sections can be overloaded during a short circuit.
●
Use the cable cro
ss sections as per national regulations.
Room temperature
measurement
Measuring range 0...50 °C
as per EN12098:
- Range 15...25 °C
- Range 0...15 °C or 25...50 °C
Resolution
Within a tolerance of +/-0.5 K
Within a tolerance of 0.8 K
0.1 K
Room humidity measurement
(QAA74.614 only)
Measuring range 10...90% (relative humidity)
Interfaces Bus. BSB-W,
2-wire connection, non-interchangeable
Maximum wire length controller/room
unit
200 m
USB Type Mini-B
Classification as per
EN 60730
Degree of pollution 2
Design type Safety class III (for proper installation)
Housing Protection as per EN 60529
IP40
- Mounted
Standards, guidelines Electromagnetic compatibility
(application range)
For residential, commercial, and industrial
environments.
EU conformity (CE) T7471x5