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6.4 Brake TEST
Under "brake-TEST", a predefined pressure is applied to the trailer brake line. The display (1)
shows the set target brake pressure under "p target" and the current pressure in the trailer
brake line under "p actual". The values have the unit [kPa]. The operating status of the device
is listed under "Status".
The operating states are as follows:
-
Status: Stop
-
Status: Atten. (Attention)
-
Status: Run
"Status: Stop.":
In the "Stop" status, no brake pressure is applied to the trailer brake line. The control valve is
de-energised. The sub-item "brake-TEST" always starts in the status "Stop". It is also only
possible to exit the sub-item in the "Stop" status by pressing the "Exit" key (3).
"Status: Atten.":
To activate the locking function, press the "Atten. (2) changed from status "Stop" to status
"Attention". The red LED (8) in the control unit now lights up. The unit is now ready to control
the set brake pressure.
If the brake is actuated in the "Atten." status, the locking function goes
out and the red LED (8) switches off. Continuing by pressing the "Start"
button (2) would result in an error message "Pressure switch triggered".
Use the purple/yellow button (10, 3) to switch back to the "Stop" status
Caution
and then reactivate the locking function
"Status: Run":
By pressing the "Start" button (2) from the "Atten." status, the set brake pressure is controlled
and the VBox trigger signal is set. If an external start/stop button is connected, it is only possible
to start via this button. Starting via the keyboard is only possible without a connected external
start/stop button. Any key can be used to cancel the print output. Triggering the pressure switch
(15) also leads to an abort and the red LED (8) switches off.
Adjust the target pressure:
The target pressure can only be changed in the "Stop" status. The two arrow keys "
and "
" (9) are used for this purpose. Briefly pressing on the button changes the value by 10
kPa and if held for longer it will change by 100 kPa. The target pressure can be adjusted in the
range from 0 to 800 kPa.
Start/stop VBox recording:
Under Status "Atten." the whole recording can be started or stopped by VBox. If recording is
active, "Rec ON" (green background) appears in the upper left of the display (1). By pressing
the "Rec OFF" button (9) the recording is deactivated and "Rec OFF" (yellow background) is
shown in the display (1)
" (10)
13
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