Data Sheet for Product

3
Siemens
Datasheet
A6V11600411_en
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_a
Smart Infrastructure 2019-08-07
Setting element
The setting elements are located in the casing. A setting element consists of 6 pins and a
jumper. It is used for selecting the required temperature measuring range and for activating
the test function. Types with LCD display have a second setting element with 4 pins and a
jumper.
The different jumper positions have the following meaning:
● For the active temperature measuring range:
Jumper in the upper position (R1) = –35...+35 °C,
Jumper in the middle position (R2) = 0...50 °C (factory setting),
Jumper in the lower position (R3) = –40…+70 °C
● For activating the test function:
Jumper in the vertical position: The values according to the table "Test function active"
will be made available at the signal output.
● For the measured value display (QFA2068D)
– Jumper horizontal, in the upper position= °F
– Jumper horizontal, in the lower position = °C (factory setting)
Malfunction
● Should the temperature sensor become faulty a voltage of 0 V (4 mA) will be applied at
signal output U2 (I2) after 60 seconds, and the humidity signal at signal output U1 (I1)
will reach 10 V (20 mA).
● Should the humidity sensor become faulty a voltage of 10 V (20 mA) will be applied at
signal output U1 (I1) after 60 seconds, and the temperature signal will remain active.
Notes
Engineering
Room sensors with active outputs have a high power loss, which can influence temperature
measurement. The degree of influence depends on the operating voltage and is
compensated for an operating voltage of AC 24 V or DC 24 V. Over- or under compensation
may occur for other operating voltages.
Furthermore, the measuring accuracy is impacted by the following factors:
● Prevailing air flow
● Wall surface (rough, smooth)
● Wall texture (wood, plaster, concrete, brick)
● Wall type (interior, exterior).
This application-specific measuring inaccuracy is constant for an installed sensor after
approx. 1 operating hour, and it can be adjusted as needed in a higher system (e.g.
controller). No correction on the local LCD.