Installation manual

Installation
20222469 / B 19
For non-wheelmark installations the autopilot will continue on the
present heading, but no course change can be made before a
control unit is activated again by pressing the AUTO button.
Autopilot Mode Control (AUTO/STANDBY
Toggling)
The Port/stbd lines of the J50 Remote terminal can be used to
alternate between automatic and electric hand-steering from the
autopilot. This may be used for armrest operation, etc. When in
AUTO mode or NAV mode, a simultaneous pulse from the Port
and Stbd terminals to the ground terminal on the remote
connection will revert the autopilot to STANDBY mode. The
next pulse will bring the autopilot to AUTO mode, hence, when
the AP50 is set for STBY (NFU) and the system select is shorted
to GND, the AP50 display changes from showing STBY to show
a blank segment with subtext “Disengaged”. In this mode all
rudder commands from the AP50 are disabled (no NFU, FU or
Auto).
When the short is removed, the display will show “AUTO” with
subtext “Inactive”. This means that the preset heading will be
maintained, but no course change can be made before the
respective control unit is activated by pressing the AUTO button.
External Alarm (Non Wheelmark System)
The external alarm circuit has an open collector output for an
external alarm relay or buzzer. The alarm voltage is the same as
the main supply voltage. The maximum load on the external
alarm output is 0.75 ampere.
Figure 2-13 External Alarm Connections (Non Wheelmark System)