|
Measurement box (Radio) | FWA 43xx / FWA 44xx | 17
Robert Bosch GmbH 1 690 326 006 2008-8-25
en
Mess box in the device8.2
Splitter box in the device8.3
Fan mess box8.4
Power supply
The fan required power supply of approx. 12 VDC.
The supply is taken from the power supply board.
Switch-on / switch-off time
The switch-on time of the fan is controlled by the power
supply board depending on the temperature. It runs
only when required.
The setting of switch-on time is carried out on the
power supply board with potentiometer R 16 Tadj. See
also potentiometer - setting power supply board.
Power supply board8.5
Connector pin assignmentFig. 17:
1. input supply voltage
2. connection san approx. 12 VDC
3. output 8 VDC for KP
4. output 8 VDC for splitter board
Tasks
Supply of 8 VDC and 12 VDC
Functional description
The power supply board transforms the supply
voltage110 V/ 230 VAC voltage in 15 VAC and converts
this to direct current. From that 8 VDC for
the supply voltage of communication processor (KP)
R
charging the battery R
the supply voltage of measuring element (MWA) in R
emergency cable.
Besides, the power supply board provides approx.
12 VDC for the supply of temperature controlled fan.
To Next Page
Loading...
