Servo Unit; Location Of Servo Unit; Installing Servo Unit; Connecting Servo Unit - Nexus AUTOPILOT Installation And Operation Manual

9.5 Servo Unit

9.5.1 Location of Servo Unit

The Servo Unit must be mounted on a dry, flat and vertical surface below deck, at least
500 mm (20") from radio receiving equipment. Since all wiring originates at the Servo Unit,
it should be centrally located to minimise lengths of wiring. It is most important to minimise
the runs of power and motor leads since voltage drop in these cables will reduce steering
capacity.

9.5.2 Installing Servo Unit

To mount the Servo Unit, remove its cover screws. The 4 inner mounting holes are now
exposed. Mount the Servo Unit with 4 screws (not supplied).

9.5.3 Connecting Servo Unit

Servo Unit connections should be according to below drawing.
Note! If any waterproof cable glands do not have cables inserted, install the short rubber
plug provided in order to maintain water tightness. If many options are connected and not
enough glands are available, use a separate junction box and route the excess wires
through one large cable in one of the large glands.
Note! Autopilot instrument / Nexus Network connection. If you want to run the Nexus
Network instruments separate from the Autopilot, do not connect green wire to (pin 1) to
the left in Servo Unit. Instead insulate the green wire.
Rudder angle
instrument
Safty swich
Battery
INSTALLATION
VR2
VR3
VR1
Pumpset
12/24V
DIP swtich
Jog
41
Pumpset/solenoid
DIP switch
Instrument
Compass
Rudder angle
transmitter