Room Control Panel (obsolete)

When using the internal sensors of the PCD7.D290 it has been noticed that the the pratical measurement accuracy is below the indication of the corresponding manual (26/841).

Reason
Due to the fact that the sensors are mounted directly in the display which itselfs influences the measurement it has been stated that the precisision is not according to the manual of this PCD7.D290 display (26/841 version 4). The chapters 4.2.3 (Temperature sensor) and 4.2.4 (R.H. sensor) will be adapted accordingly in the next release.


4.2.3 Temperature sensor

Temperature sensor used in PCD7.D290 is active and supplies as output a voltage of 10.0 mV/°C; this sensor is directly calibrated in °C.
Embedded temperature sensor component is directly soldered on the main board of the PCD7.D290
Theoretical accuracy value: ± 0.5°C at 25 °C., Practical accuracy value: ± 1°C (± 1.5°C in the worse case)

4.2.4 R.H. sensor

R.H. sensor used in PCD7.D290 is capacitive and supploes as output a capacity in the range 161.6 pF at 0% R.H. and 193.1 pF at 100% R.H.
The evaluation algorithm is stored directly inside D290 firmware.
Embedded humidity sensor component is directly soldered on the main board of the PCD7.D290 --> Practical accuracy value: ± 5%

When more than 1 displays of the same type (PCD7.D23x and PCD7.D290) are connected to a RS 485 port (Bus terminal) of a PCDx.F2xx module, the communication doesn't work. Only one of the displays is available, the other one(s) is (are) not accessible!

The ports 100 to 131 available on the PCDx.F2xx modules have different timing properties and are therefore not appropriate for PCD7.D23x and PCD7.D290 in bus terminal topoloy!

Workaround:
Use another RS 485 port (onboard or with F1xx).