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18 | FWA 43xx / FWA 44xx | Measurement box (Radio)
1 690 326 006 2008-8-25 Robert Bosch GmbH
en
Potentiometer- Setting8.6
Fig. 18:
1 Breaking point 3
2 Breaking point 2
3 T adjust potentiometer R16 for fan
4 V adjust potentiometer R8 for 8.00 V DC
5 I adjust potentiometer R11 for 23 m V
6 Breaking point 4
7 Breaking point 1= measure
8 Breaking point 5
9 Breaking point 6
Setting
The settings must be made necessarily in the speci-
i
fied sequence after visual inspection. After success-
ful adjustment, the spindle potentiometer must be
sealed.
1. Vadj (R8)
= setting the supply voltage for communication
processor (KP), the battery, cable connection.
Setting location:
R R8 (Spindle potentiometer 200 Ω)
Setting condition: Temperature between
R
20°C...30°C, no load.
Breaking point: MP2 on C6 Pin 1 (+) to GND (MP1)
R
Vadj = + 8.00 V + 0.04 V (0.25%) - 0.00 V i
2. Iadj (R11)
= Setting of operational amplifier - input
( = Safety switching to prevent overloading of power
supply by short circuit or simultaneous battery-charging
and cable operation.
The power supply is only covered on battery charging
or cable operation.
Setting location: R11 (Spindle potentiometer 200 Ω)
R
Setting condition: Temperature between R
20°C...30°C, no load
Breaking point: Voltage of MP4 (Pin 5) after MP3
R
(Pin 6) on OP U2
In case of Ilast= 0
i
∆UOp- inputs = +23m V +/- 0.5m V3.
3. Tadj (R16)
= Setting of the switch-on time of the fan operating
depending on the temperature.
Setting location: R16 (Spindle potentiometer 200 Ω)
R
Setting condition: No load, fan off! R
Breaking point: Voltage of MP5 (Pin 2 ) after MP6 R
(Pin 3) on OP U2,T is the heat sink temperature.
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