Navico NAC-2, Commissioning Manual

Page: 16 / 44

Drive voltage
Nominal drive voltage specified for your drive unit.
• Options: 12 V and 24 V.
Ú
Note:
24 V output is only available with 24 V supply.
The setting must match the spec of the solenoids/pump/motor.
Warning:
Selection of improper voltage level for your
drive unit may damage both the drive unit and the
autopilot computer even if the protection circuits are
activated.
Drive engage
Defines how the Engage output is used.
The following options are available:
• Clutch
If your drive unit/motor/pump needs clutch to engage the
actuator, it shall be connected to the "engage" output. Configure
the "Drive engage" as clutch. The clutch will be activated when
autopilot computer is controlling the rudder. In standby, the
clutch is released to allow manual steering. Check specification of
your drive unit to determine whether clutch is required.
• Auto
Output activated when autopilot computer is in Auto, NoDrift or
Navigation modes. For manual rudder control (Standby, NFU and
FU) the output is not activated. Typically used to switch between
two rudder speeds on a continuous running pump, used when
different rudder speeds are required for automatic and Follow-
up/Non-Follow-up steering.
Minimum rudder
Some boats may have a tendency to not respond to small rudder
commands around the “course keeping” position because of a small
rudder, whirls/disturbance of the water-stream passing the rudder,
or it is a single nozzle water jet boat. By increasing the Minimum
rudder parameter you may improve the course keeping
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Dockside setup | NAC-2/NAC-3 Commissioning Manual