ComNav P4 - Figure 72 - Typical WORK Mode Screen (Engaged)

ComNav P4 Installation and Operation
Advanced Operations
Document PN 29010100 V1r0 - 154 -
Figure 72 – Typical WORK Mode Screen (Engaged)
To disable WORK mode, press the WORK button again, for approximately 1 second, until
a confirming beep is heard and the letter `W´ disappears from the display. WORK mode
can also be cancelled by switching to either STANDBY or POWER STEER mode.
When WORK mode is engaged, the Rudder Scale Factor changes the amount of
corrective rudder movement which the steering algorithms calculate using the Rudder
Gain setting. In WORK mode, that calculated amount (i.e., proportional to the course
error) will also be multiplied by the Scale Factor, resulting in larger rudder movements for
a given course error. The Rudder Scale Factor is entered on the Work menu.
Other effects take place in WORK mode too.
 The corrective rudder movement calculated for Counter Rudder is reduced to the
minimum possible for the vessel type (i.e., as if the Counter Rudder parameter was
set to 0), which enhances the effect of the Rudder Gain and Rudder Scale Factor.
 Turn Rate is limited to 10° per second while WORK is active, for all changes of
Heading controlled by the autopilot, and for Special Turns.
 Particularly useful for pair trawling, the autopilot also disables the automatic course
trim unless Autotrim (in the Work menu) is specifically turned on.
 Finally, the built-in off-course alarm will be disabled the entire time WORK mode is
engaged.
If the user is not satisfied with the fixed helm bias determined by the Autopilot at the onset
of WORK mode, manual adjustments can be made “on-the-fly” while WORK mode is
engaged. A double-press of the WORK button will bring up the regular Work menu, but
with an additional line.