Simrad AP50 Autopilot
24 20222410 / B
Mode and Autopilot Status Signals
The JD53 Dual Analog Board is equipped with two sets of
relays, providing potential free contacts (ON1 - ON2 and Mode1
– Mode2) as normally open (no) or normally closed (nc). The
function is selected via jumper switches S6, S7, S8 and S9.
The closing or open contact at TB24 terminals 1 and 2 and
TB26 terminals 1 and 2 (ON1 – ON2) are activated whenever
the autopilot is switched on, and may be used in conjunction
with “hand-shake” signals between steering gear and autopilot
to verify that the autopilot is switched on and “ready” for control
of the steering.
The Mode1 and Mode2 contacts are activated in NFU, FU, Auto
and Nav modes and can be used to provide change-over of the
steering gear from Manual to Autopilot steering. Alternatively
the (Mode) changeover can be set to operate only in Auto and
Nav (ref. Drive Engage setting in AP50 Installation Manual.
Figure 2-20 Mode and autopilot status
External Mode Selection
The most common signals from a steering gear to an autopilot
are shown below.
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