General Information
22083083H 11
1.5 Junction units
The junction unit is the central in the AP35 autopilot system. It contains the
steering computer, interface circuits to all system components and drive
circuits for the drive unit motor and clutch. Three models, J300X, J300X-40
and J3000X are available.
Junction unit comparison chart:
J3000X J300X (J300X-40)
Supply voltage 10-28 V 10-40 V
Motor current (continuous/peak) 6/10 A 10/20A (20/40A)
Number of Robnet units* (+J3xx) 2 5
NMEA ports (input/output) 1 2
Solenoid output x x
Input for NFU control x x
External alarm x
Radar clock/data interface x
* AP35 Control Unit, RC25 Rate Compass, FU50 Follow-up lever, CI300X
Compass Interface, NI300X NMEA Interface.
1.6 Rudder Feedback units
RF300 Rudder Feedback Unit
Rudder feedback unit with transmission link and 10 m (30 feet) of cable.
Transforms the angular travel of the rudder to a digital signal read by the
autopilot steering computer.
RF45X Rudder Feedback Unit
This unit transmits two electrical signals proportional to the rudder angle.
One signal operates as a feedback for the autopilot, the other as drive signal
for rudder angle indicators. The unit is mounted close to the rudder stock and
is mechanically connected to the rudder by the RF45 Transmission link.
1.7 Heading Sensors
The AP35 autopilot can be used with the following combinations of heading
sensors:
RFC35 Electronic Fluxgate Compass
A compact heading sensor from Simrad with 15 m (45 feet) of cable. The
direction of the earth's magnetic field is sensed by a floating ring core in a
fluxgate coil and transformed to a digital signal read by the autopilot steering
computer.
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