22
Operating Manual BaseTravel 401/801
9.3 Pylon
The
motor
and the
electronic control system
are located in the pylon. They generate the
propulsion. In addition, several protective functions are integrated:
1.
Temperature protection:
If the motor overheats, the motor control system reduces the
output of the drive until a temperature equilibrium is established between generated
and disposed heat.
2.
Undervoltage protection:
If the voltage falls below 9 V (BaseTravel 401) or 17 V
(BaseTravel 801), the electronic controller switches the drive off to avoid
overdischarging the battery. Even beforehand, the output of the motor is regulated
so that high currents of over 7 A do not occur.
.
Blocking protection:
If the propeller is blocked or stuck, the motor would normally take
in too much power. In this case, the motor is switched off within a few hundredths of
a second to protect the electronics, motor winding and propeller. After unblocking, the
motor can be re-started out of the stop position after about 2 seconds.
4.
Cable damage protection:
If the steering cable is damaged, i.e. if the connection to the
tiller is broken, the motor will not start, or it stops.
5.
Acceleration control:
The alteration speed at which the speed of the propeller adjusts
to a changed tiller position is limited in order to protect mechanical drive parts and to
avoid short-term peak current.
• If the motor malfunctions, first switch the tiller control to the stop
position for approx. 2 seconds. The stop position has a reset function
and can correct minor faults itself.
The highly efficient
variable pitch variable camber (VPVC) propeller
is equipped with
a mechanical
slip clutch
that protects the drive from mechanical damage on sudden
blockages of the propeller. The slip clutch is designed as a redundant safety feature to the
electronic blocking protection described above.
The
Fin
supports steering movements and protects the propeller when it comes into
contact with the bottom.
The
sacrificial anode
protects the metallic components that are located under the
water from corrosion, especially in salt water.
