NT888G MK2 AUTOPILOT OPERATING MANUAL
2.43 (ii) Non Latched Jog Lever (Non Follow Up) Override Control … (Continued).
Movement left (Port) or right (Stbd) of the sprung lever will initiate a fixed and safe
angle of rudder (speed related and calibrated during Sea Trials).
Release of the jog lever (sprung back to centre) will cancel the rudder order and
steering control will automatically revert to the Autopilot system which will reassume
the Set Course.
This non latched power steer operation provides an immediate override function and
can be selected and calibrated via the Autopilot
SET UP
Menu (Parameter Nos.75 &
78 - set to
JOG
).
Application notes in Section TM3 of the Installation and Technical Manual.
2.43 (iii) Latched Jog Lever (NFU) Override & “Resume Course” Control:-
When the Autopilot is engaged (ON) and steering the required Set Course, it may on
occasions be required to override this Set Course for a prolonged period to avoid
potential hazards/optimise leeway etc.
This can be done by connection of a proprietary “sprung to centre” jog lever which in
its central position demands no rudder movement allowing the Autopilot full control of
the rudder for steering purposes.
Movement left (Port) or right (Stbd) of the sprung lever will initiate a fixed and safe
angle of rudder (speed related and calibrated during Sea Trials).
Release of the jog lever (sprung back to centre) will leave the rudder at the calibrated
angle but further movement of the jog lever in the opposite direction will move the
rudder towards midships and beyond to the opposite maximum calibrated angle if the
lever movement is prolonged. The rudder movement will stop at any time the lever is
returned to the sprung midships position, but power steer control will be retained by
the NFU Jog Lever confirmed by flashing red and green chevrons on the Autopilot
Control Unit panel.
The flashing red and green chevrons are accompanied by an audible “bleep” and the
display message “
REMOTE OVERRIDE
”. This condition (latched power steer mode)
will persist until either the CANCEL or CONFIRM key is operated.
CANCEL
(
Resume Course
) key operation will cancel the Power Steer mode and the
Autopilot will automatically take up the original Set Course.
CONFIRM
key operation will cancel the Power Steer mode and will confirm the
current heading as the new Autopilot course which will automatically be adopted.
This latched power steer operation provides an immediate longer term override
function and can be selected and calibrated via the Autopilot
SET UP
Menu
(Parameter Nos.75 & 78 - set to
HSC LATCH
).
Application notes in Section TM3 of the Installation and Technical Manual.
