Function Of Safety Power Window
When all door (Front,
Rear) power window auto-up switch is operated, safety function is
activated.
1. |
Safety function condition
When detect the force of 100N during the
window rising, window is reversed. |
2. |
Length of window reversing (except holding the
auto-up switch)
A. |
When detect the jamming during the 4mm ~
250mm from top of the door.
→ Window is reversed until 300mm from
top of the door.

|
B. |
When detect the jamming over the 250mm
from top of the door.
→ Window is reversed until 50mm from
jamming position.
→ Window is reversed 50mm or bottom
position in case of 50mm reversing distance.

|
C. |
When detect the jamming over 300mm from
top of the door.
→ Window stops at reverse
point. | |
3. |
Length of window reversing (holding the
auto-up switch)
A. |
When detect the jamming during holding
the auto-up switch.
→ Window is reversed until 25mm from
jamming position. |
B. |
Auto-up function is not available during
the 5 seconds from above condition.
→ When holding the auto-up switch,
window is operated as a manual-up function. (Safety function
is not activated.) |
C. |
When detect the jamming during holding
the auto-up switch again.
→ Window is reversed until 25mm from
jamming position. |
D. |
When holding the auto-up switch after 5
seconds from above condition.
→ Window is reverse until 25mm from
jamming position.

| |
4. |
Safety function is not available
area
Safety function is not available during the
4mm from top of the door. |
Initializing Method Of The Safety Power
Window
1. |
Position counter and position
initialization
(1) |
Position counter
Window position counting is implemented
by use of one Hall Effect sensor (HEF) connected to timer
capture unit of the Controller with a resolution of 180°
electrical.
Even the battery was separated from the
car, it must keep the window position
information. |
(2) |
Position initialization
For position initialization, position
counter detect the upper mechanical stop and lower mechanical
Position. Motor control unit (MCU) allow only Manual mode
activity (without ASD Anti-Squeeze Detection algorithm)
feature) before to be initialized.
Initialization means the condition to
move the window system with full anti-pinch function and
related functions by detecting the window travel distance
(Upper/Lower mechanical limits).
Conditions for initialization
are
A. |
de-initialized position
counter |
B. |
Power window switch Up
activated |
C. |
block condition
detected
(no motor movement of more than 1
count during 1sec/ SW
dependent) |
Switch action with De-initialized
condition :
A. |
Up direction : Manual & Auto
P/WDW sw input → manual
mode; |
B. |
Down direction : Manual P/WDW sw
input → manual mode, + Auto s/w input → auto
mode | |
(3) |
Re-initialization
During re-initialization, position
counter is set to "zero" at upper block position to compensate
counting errors by software, mechanical tolerances or physics.
Conditions for re-initialization are
A. |
initialized position
counter. |
B. |
window at upper block position
(capture range EEPROM
programmable) |
C. |
block condition
detected
(no motor movement of more than 1
count during 1 sec/ SW
dependent) | |
(4) |
De-initialization
The system initialization/calibration
will be lost in the following cases:
A. |
After parameter modification via
diagnostic |
B. |
Wrong EEPROM checksum at ECU
wake-up or power-on |
C. |
Movement outside predefined window
stroke (above learned top position, below predefined
bottom position) |
D. |
De-initialization after a defined
number (EEPROM) of reversals without re-initialization
in the upper seal (activation /de-activation controlled
by EEPROM value). A window down movement or switching
off the window lifter permission resets the reversal
counter value(activation by EEPROM
bit). |
E. |
De-initialization after a defined
number of movements (EEPROM) without re-initialization
in the upper seal (activation /de-activation controlled
by EEPROM value) |
F. |
Special de-initialization
procedure :
The special window lifter
de-initialization procedure works as
follows: |
- |
Move window below soft-stop
position (position EEPROM
adjustable) |
- |
Press MANU-down switch and
keep it pressed |
- |
Apply permission signal
(serial-link = PIN 6) ON → OFF → ON within 2
seconds (time EEPROM
adjustable) | | |
(5) |
Soft stop function
In order to reduce noise and mechanical
stress, the window movement is stopped under control of the
ECU before the bottom position is reached.
The clearance is 0 / +10 mm (at 11.5 V
to 14.5 V).
To activate the soft bottom stop
function, the top reference position and bottom reference
position have to be initialized. Therefore, the window is
lifted into the top position until the block condition is
detected. This position is taken as top reference
position.
Afterwards, the window is moved to the
bottom position until the block condition is detected
(mechanical stop). This position is taken as bottom reference
position.
The bottom reference position is
re-initialized :
A. |
When window is operated down
starting from soft stop
position |
B. |
Every "9" stops at soft stop
position. | |
(6) |
Thermal protection
Thermal protection by software module is
implemented to prevent from destruction of motor during
overload condition. Motor temperature is estimated by
integrating squared motor current as an estimate for heating
power integral. When estimated motor temperature exceeds
EEPROM programmable upper limit, motor is deactivated for
fixed delay time (default value = 30 sec.)
Thermal shutdown during a window
operation will not interrupt the operation due to safety
reasons. |
(7) |
Operation time limiter
Maximal operation time of power window
motor is limited to 15 sec (EEPROM
programmable). |
(8) |
Continuous reverse
Current Number of Continuous reverse of
window is 5. With the below condition, this counter Will be
initialized.
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