5
TEBS E
braking system
52
Input signal, Analogue signal:
A threshold value (value, as of which the switch is
activated) must be assigned to the analogue signal and it must be specified
whether the operating time should be recorded above or below this value.
Display with ABS light
/
Display with external signal light:
Here you can select
whether the warning should be indicated via the fault indicator / warning lamp (am-
ber, ABS) and/or via an external warning lamp attached to the trailer.
Components
The following components can be used for indication and operation:
Component
Figure
Part number
SmartBoard (optional)
446 192 110 0
Cable for SmartBoard (optional)
449 911 ... 0
External green warning lamp (optional)
446 105 532 2
5.10.4 Axle load output
Axle loads can be output to the towing vehicle via the CAN ports, to the Smart-
Board / Trailer Remote Control via SUBSYSTEMS.
The display in the towing vehicle depends on the support or activation of the
‘Trailer axle load display’ function. TEBS E generally provides this information.
In the case of vehicles with mechanical suspension, however, the accuracy is re-
stricted by the construction.
The axle load is not output and is not stored in the operating data record (ODR) if
the following conditions apply:
• Drawbar trailer with only one axle load sensor on the axle c-d.
• Vehicles with lifting axles that are not controlled by TEBS E (mechanical control,
control via Trailer Central Electronic or external ECAS).
• On semitrailers with a tag axle and no additional pressure sensor.
For drawbar trailers with 4S/3M, an additional pressure sensor must be installed on
a support bellow of the second axle to detect the axle loads.
An additional axle load sensor can be installed on semitrailers with 4S/2M+1M and
4S/3M to increase the precision of the measurement. In the absence of additional
axle load sensors, the single axle load is distributed evenly over all axles.
The installation of an additional axle load sensor is described in the following chap-
ter, see chapter 6.8 ‘External axle load sensor’, page
.
Transfer of the axle load to the towing vehicle via CAN is configured as default in
the TEBS E and can be displayed in the dashboards of most towing vehicles.
If in the case of trailers with two axle load sensors the loading state output is not
indicated correctly in the towing vehicle, the transfer of the CAN messages can be
adjusted.
