Braking assistant:
Fig.3.9
Before travelling, if you wish, the braking assistant can be
activated. This supports you when braking and ensures energy
recovery to the battery (if this is not charged above the limit of
90 % or the temperature is not below 0 °C).
To activate braking assistance, in the start menu (see section
3.2.2), press button [2] on the controller to move to the next
sub menu. There, select "menu" and in the next selection
screen that appears, select "braking assistant".
When selecting "on", a new menu item opens in which you can
preselect using buttons [1] and [3] of the controller, any speed
from which motor-supported braking should take place. Once
you have set the required speed, go back to the start menu by
pressing button [1] of the controller several times.
If you wish to deactivate the braking assistant, repeat the
process and select "off"
instead of "on". Please ensure that when the braking assistant
is deactivated, no automatic braking or energy recovery to the
battery takes place – except when selecting manual
recuperation (see section 3.2.5).
Important information:
When the battery is fully charged, the braking assistant can in
fact be activated, however, not actively used. This is only
possible at a battery capacity of < 90 %. For this reason, in
field [11] of the display, the symbol of the fully charged battery
[a] is shown instead of the symbol for the activated braking
assistant [b].
(a)
The sMMI software now waits until the battery is partially
discharged, then automatically switches on the braking
assistant and changes to symbol [b].
Important information on how the braking assistant
works
If you have pre-set, the system maintains this maximum speed
irrespective of higher or lower gradients, provided that the
incline is also steep enough to achieve the set maximum
speed. The drive achieves this until it reaches the maximum
motor torque.
If this is exceeded, the braking action gradually subsides and
you need to brake yourself so as not to get faster.
Whilst the motor regulates the vehicle speed under the
conditions described above, power is fed into the battery,
charging it.
As soon as the pedals are pushed, the braking assistant
automatically deactivates. It reactivates if the pedals are not
pushed any more and therefore no force is acting on the chain
or on the force sensor in the wheel hub. By manually braking
the assistant can be taken back to the speed window where it
automatically activates.
(B)
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