WABCO TEBS E1 - Standstill Function

5
TEBS E braking system
48
Vehicle type and ABS system configuration Comment
• Semitrailer with trailing steering axles with 4S/3M,
4S/2M+1M or 2S/2M+SLV
•
The MAR axle generally brakes with lower or equal
pressure to ABS control (for the cornering stability of
adhesion-steered axles).
• Drawbar trailer with 4S/3M
•
Semitrailer without trailing steering axle or central axle
trailer with 4S/3M or 4S/2M+1M
•
During RSS control, the behaviour of the wheel on the
inside of the curve is not considered in the ABS logic.
•
As long as the inside wheel of the MAR axle is not yet
lifted, the MAR axle will be braked with low pressure in
order to avoid tire flat spots.
•
If the inside wheel of the MAR axle lifts, i.e. indicates a
tendency to lock up at low pressure, the pressure in-
creases – depending on the behaviour of both outside
wheels.
•
The output pressure on the MAR axle can be reduced
at the outside wheel by ABS control requirements.
• Vehicles with adhesion-steered steering axle with
2S/2M+SLV (Steering axle controlled via a Select Low
Valve), 4S/2M+1M or 4S/3M+EBS/ABS (Steering axle
MAR-controlled).
•
RSS on vehicles with adhesion-steered steering axle is
only possible with adjacent system configurations.
•
An adhesion-steered trailing steering axle must be
clicked on in the TEBS E Diagnostic Software.
Setting the sensitivity of the RSS function for vehicles where tilting is critical
The sensitivity of the RSS function can be set in the TEBS E Diagnostic Software.
Several TEBS E in a special vehicle or a road train that communicate
with one another via CAN routers, coordinate their RSS interventions.
This increases the stability of the vehicle combination.
5.9.7 Standstill function
Application
Integrated functions in the TEBS E Modulator.
Purpose
To avoid unnecessary current consumption if the vehicle is parked with the parking
brake applied and the ignition switch actuated.
Function
When the vehicle stops, braking is done via the redundancy circuit only. The elec-
tro-pneumatic pressure control is deactivated. The function is deactivated as soon
as the drive begins (v > 2.5 km/h).