Robertson AP21 - AP22 Control Unit; AP21 Control Unit; Junction Units

Introduction
20220596E 11
RFC35
FLUXGATE
COMPASS
AP21
CONTROL
UNIT
REVERSIBLE
PUMP
JUNCTION
UNIT
RF300
RUDDER
FEDDBACK
Figure 1-2 AP21 Basic System
1.4 AP22 Control Unit
A compact autopilot control for panel, bulkhead or overhead
mounting. It has a large LCD display for readout of autopilot
data, dedicated keys and rotary course knob. Two Robnet
connectors are provided for system interconnection and
expansion.
1.5 AP21 Control Unit
A portable control unit with 7 m (20 ft.) of cable. It has the same
autopilot functions as AP22 and can be used as a hand held
autopilot or be mounted in a fixed, bracket mount.
1.6 Junction units
The junction unit is the heart in the 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.