linear drive type LD100 installation guide version 1.2 page 1 of 3
Test data and installation instructions 100 KgM
linear autopilot drive type LD100.
Test data:
Customer:__________________
Test Engineer:_______________
Date:______________________
Serial number:_______________
Output force 400 Kgs
Motor voltage: 12 Volts
Clutch voltage: 12 Volts
Insulation test:
Electrical Connections:
This illustration shows the minimal compo-
nents for a working autopilot configuration.
Jefa autopilot drives work together with all
mayor autopilot electronics. The connection of
the Jefa autopilot drive to the autopilot
junction box is quite simple. The two 1,5 mm²
red and black wires must be connected to the
plus and minus of the autopilot clutch line.
This will make sure that when the autopilot
user engages the autopilot on the control
screen, the clutch will engage and allow the
autopilot motor to drive the steering system.
The two 2 mm² red and black wires must be
connected to the autopilot drive output
connection.
Performance table:
This performance table shows the relation between the consumed power and the output power and how quick
this is done (hard over time). The red line shows the output torque against the needed amperage. The green
line shows the hard over time (time to travel 72° of rudder travel) of the drive relative to the output torque. Also
visible is the strength of the drive unit related to manpower. The unit is much stronger than a human being and
can last much longer but one should note that when the unit is operated in the red zone, something is wrong
with the trim of the boats and the sails should be adjusted to achieve lower rudder torques. The above table
shows that the Jefa linear drive will steer the yacht even in the worst possible conditions. As the drive will mostly
operate in the left green zone and will not continuously rotate, the average power consumption on 12 volts is 1
to 2 amps.
fluxgate compass
2 mm2
to battery
autopilot control head
clutch
output
1,5 mm2
drive unit
rudder feedback unit
autopilot junction box
drive
output
