8
TEBS E
Installation notes
for vehicle installation and retrofitting
146
8.3.1 RSS installation regulation
The parameters for the circumference of the installed tires and the number of teeth
of the installed pole wheels must be defined because these input values are used
to calculate the required value of lateral acceleration which represents a risk of tip-
ping.
The Roll Stability Support (RSS) function depends on the accuracy of the parame-
ter settings for the tire circumferences, number of pole wheel teeth and the other
data in the brake calculation. With inaccurate data the function does not work
properly.
Faultless function is only possible if the actual tire size is no more than 8 % smaller
than the defined value. The defined number of teeth on the pole wheel must corre-
spond with the installed number.
Please refer to the WABCO brake calculation for the values for the permitted tire
circumference range and the LSV data.
Never fit tires that are larger than specified; the RSS function will not work properly
if this is the case.
– Calibrate the inclination of the modulator (
Δβ
) using the TEBS E Diagnostic
Software.
Requirements: The vehicle must be parked on a flat, level surface (deviation
from horizontal < 1°).
If the calibration is not carried out, the modulator inclination will calibrate itself
when driving.
Semitrailer / central axle trailer
Δ
X1 [mm]
Δ
Y1 [mm]
Δ
X2 [mm]
Δ
Y2 [mm]
Δα
Δβ
Δδ
2000
500
9000
50
±15°
±3°
±3°
