Simrad AUTOPILOT SYSTEM AP50 - Manual (Page 89)

Installation
20221032B
87
J50-40 Power Board Terminals
Main Board Terminals
System Select
The “System select” (Sys. Sel.) input signal of the J50 can be used
to alternate between the boat’s own steering and the autopilot
system from an external system selector (refer to IMO resolution
MSC. 64 sec. 4). A ground on TB14 Sys. Sel. will force the
system into Disengage mode. The autopilot will be disconnected
from the vessel’s steering system and show “Disengaged” on the
display (on the FU50, no mode indicators will be lit). When the
“Sys. Sel.” input line is re-opened, the autopilot will go to AUTO
mode. For wheelmark installation (Master operation = Yes, ref.
page 121) the master control unit will be active.
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.
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.