6
TEBS E
GIO functions
112
6.22 Relaxation function (Bounce Control)
Vehicle type
All trailer vehicles
Purpose
The multi-axle combination is subjected to strain when the semitrailer is loaded and
unloaded while the complete vehicle train is braked. When the park brake is re-
leased, following unloading for example, the vehicle body can jump up abruptly be-
cause the air suspension lifts the vehicle immediately with the air-spring bellows
still full and the load now absent. The relaxation function prevents the body from
jumping up in this manner and thereby protects the load.
Function
The function can be activated with a button or the SmartBoard.
The tension on the applied brakes is released by actuating the brake cylinder from
the modulator. The brakes are released side by side (for semitrailers/central axle
trailers) or by axle by axle (for drawbar trailers) for this purpose. Deceleration of the
vehicle is always over 18% during this process because the brake cylinders are re-
leased alternately.
Components
One of the following components is required to activate the function:
Component Figure Part number
SmartBoard
446 192 110 0
Cable for SmartBoard
449 911 ... 0
Switch (optional)
Not part of WABCO's scope of supply
Universal cable (optional)
449 535 ... 0
Parameter setting
The function is activated via tab 6, Brake functions.
The GIO slots to use are defined in tab 11, connector.
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