© Danfoss | August 2018 AQ00000211 | 67
time for acceptable CL
P3806 U16 x100msec
P3806 and P3808 indicate the target sweep time for the spool calibration
function, to find an acceptable closed loop dead-band edge. That maximum
given time is defined by P3806
OEM, Dealer 10 600 110
time for acceptable CL
P3808 U16 x100msec
P3806 and P3808 indicate the target sweep time for the spool calibration
function, to find an acceptable closed loop dead-band edge. The minimum
given time is defined by P3808
OEM, Dealer 10 600 60
Spool calibration -
Vector sample size
P3810 U8 -
In most cases, to find an acceptable closed loop dead-band edge within a
given time frame requires more attempts (to ensure consistency in the
captured/found values).
P3810 defines the vector size for how many attempts (for left- and right-
side dead-band edge, respectively) should be considered
OEM, Dealer 1 10 7
Spool calibration - Min
valid samples
P3811 U8 -
P3811 defines how many of the attempts (defined by P3810) that need to
be equal to get a successful spool calibration.
OEM, Dealer 1 10 5
Spool calibration - +/-
turn range sweep add-on
P3812 U16 dDeg
This indicates the additional +/- turn range, which will be added to the
value in P3804. The additional turn range movement is required to obtain a
stable spool position and stable wheel movement of the vehicle. The
wheels will move in between this +/- turn range, but time will only be
measured in between the +/- turn range specified by P3804.
Resolution: 1 dDeg 1 = 0,1°.
OEM, Dealer 5 400 25
Spool calibration -
Spool set-point
increase/decrease step
P3814 U8 %
When the auto-calibration function has determined that the last attempt was
too slow or to fast (hence, within the time frame specified by P3806 and
P3808), it will:
• Too slow: add the value specified by P3814 to last set-point value.
• Too fast: subtract the value specified by P3814 to last set-point value
OEM, Dealer 1 25 10
WAS signal to be
P3881 U16 mVolts
Maximum allowed signal to be captured for neutral position during CAN
WAS auto-calibration
OEM, Dealer 0 5000 4500
between the captured
P3883 U16 mVolts
Determines the minimum voltage needed in between the captured CAN
WAS voltage (minimum, neutral and maximum), to ensure a sufficient
high wheel angle resolution during CAN WAS auto-calibration.
OEM, Dealer 0 2500 0
WAS signal to be
P3885 U16 mVolts
Minimum allowed signal to be captured for neutral position during CAN
WAS auto-calibration
OEM, Dealer 0 5000 500
Table 30
9.4.1.1 Auto-calibration parameter plausibility check
P3791, P3795:
Maximum and minimum allowed analogue sensor signal to be captured for analogue sensor (WAS or Joystick) neutral
position. This is applicable for primary and redundant analogue sensor.
• P3795 < “captured neutral analogue sensor signal value” < P3791.
Important
The analogue sensor auto-calibration routine will return an error message if the straight heading falls outside the range.
Use these parameters to control the straight heading range.
P3793:
Determines the minimum voltage needed in between the captured analogue sensor values (minimum, neutral and
maximum), to ensure a sufficiently high analogue sensor resolution. The algorithm will determine if left or right has the
highest value. This is applicable for primary and redundant analogue sensor.
• “Captured rightmost analogue sensor values” - “Captured neutral analogue sensor values” ≥ P3793 and
“Captured neutral analogue sensor values” - “Captured leftmost analogue sensor values” ≥ P3793.
or
• “Captured leftmost analogue sensor values” - “Captured neutral analogue sensor values” ≥ P3793 and
“Captured neutral analogue sensor values” - “Captured rightmost analogue sensor values” ≥ P3793)
Important
The WAS or Joystick auto-calibration routine will return an error message if detected analogue sensor calibration values
result in a too small working range.
P3797, P3799:
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