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Service Competence Center
Components
Cooling Fan Induction Power Control IPC
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Function of cooling fan:
The fan is a brushless driven. On the printed circuit board a electronic is generating a alternating
magnetic field via the coil. This coil is driving the permanent magnet which is glued in the fanwheel .
The speed is controlled via a hall sensor. The speed itself is variable and can be changed via the
main control electronic.
The fan itself has 3 wirings:
Black
ground
Red
power supply 12V
Blue
speed control
For verifying the function a meter in the resistance setting
can‘t be used !
The supply voltage can be measured on the plug.
Power supply (DC)
speed
active
6V
1900rpm
1 coil is in use (switched on and pot detected)
8V
2600rpm
2 coils are in use (switched on and pot detected)
10V
3100rpm
3 or 4 coils are in use (switched on and pot detecte
12V
3600rpm (max)
3 or 4 coils are in use AND the heatsink temperature
exceeds 55°C. Switching back to 10V at 50°C.
Содержание G0
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