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Roller blind for panoramic sliding roof function - GF68.50-P-4101-01PC

Fig 1: Roller Blind For Panoramic Sliding Roof Function
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Function requirements 

Function sequence 

The following function sequence is initiated by means of the roof system switch (N70s1)  or the transmitter key (A8/1)  :

  1. Retraction of sun blind to the "open" end position.
  2. Extension of sun blind to the "closed" end position.

The sun blind is driven by the sun blind motor (M24m1)  .

The motor's direction of rotation for sun blind retraction and extension is determined by the polarity of the actuating voltage from the overhead control panel control module (N70)  .

The polarity of the actuating voltage is set by means of a two-coil relay (center-zero relay with neutral position).

Position measurement is performed by the overhead control panel control module (N70)  using pulses supplied by Hall sensor 1 (M24b1)  and Hall sensor 2 (M24b2)  .