External Axle Load Sensor - WABCO TEBS E Manual

6.8

External axle load sensor

Vehicle type
Purpose
For axle c-d
For axle e-f
Components
Parameter setting
All trailers with air suspension or hydro-pneumatic suspension.
An external axle load sensor can also be used instead of or in addition to the inter-
nal axle load sensor.
Vehicle type
Vehicles with hydraulic suspension for example because suspension pressures of
up to 200 bar are required here (vehicles that cannot be connected to the TEBS E
Modulator because of too high pressures).
The external axle load sensor may be retrofitted on the main axle should the inter-
nal sensor fail. This avoids replacing the module and a cost-efficient repair can be
performed instead.
With hydraulically suspended vehicles, the right and left axle load can
be detected separately by using a second pressure sensor on the axle
c-d. To ensure that the vehicle does not over- or under-brake when the
load differs from side to side, this function can be used to determine an
average value for the two external pressure sensors.
This average value is used for determining the braking pressure and
for outputting the axle load.
This function is not suitable for drawbar trailers.
Vehicle type
Drawbar trailer, semitrailer (only 3M) with lifting axles or tag axles, OptiTurn / Opti-
Load
Purpose
More precise determination of the axle loads.
Function
Transmission of the information for total weight of the trailer via the ISO 7638 plug
connection to the towing vehicle and show on the display.
If a SmartBoard is installed, the separate loads of the drawbar trailer axles (front
and rear axle) can also be displayed.
Component
Pressure sensor (0 to 10 bar)
Use only at the responsibility of the vehicle manufacturer,
depending on the vehicle construction.
Cable for pressure sensor
The external axle load sensors are defined via tab 8, General functions.
The GIO slots to use are defined in tab 11, connector.
GIO functions TEBS E
Figure Part number
441 044 101 0
441 044 102 0
449 812 ... 0
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