Simrad AP50 Installation Manual download pdf (Page 92)

Advanced Settings

20222469 / B 83

Transition Speed

(Only appears in the Settings menu when “Planing” or

“Waterjet” is selected as the “Boat type”.

To make this adjustment you need speed input from either SOG

or Log.

Planing boats may often have very different steering

characteristics before and after planing. The same may apply for

water jet driven boats at low and high speed. AP50 offers the

possibility of using the Auto-Work mode values for Rudder and

Counter Rudder at low speed. By setting the Transition Speed

to a value different from the default = 0, the Work parameters

for Rudder, Counter Rudder and RateOfTurn/Radius will

automatically be used for speed below the set value.

Note ! Other special work functions (thruster control, disabling of

special alarms etc.) do not apply without the Work mode being

manually selected.

For a planing boat it is recommended to set the Transition

Speed to the value that represents the speed where the hull

begins to plane. For a water jet boat it should be set to a value

that represents the speed where it begins giving good response

from the main steering.

Range: OFF - 40

Default: OFF

Nav Gain

SETTINGS

Nav gain 3.5

Minimum rudder 0.0°

Turn mode ROT

RateOfTurn 240°/min

W RateOfTurn 033°/min

Added stop time 0s

Init NAV Firm

Turn Gain 1.0

W Turn Gain 10.0

Rate sensitivity 15

The Nav Gain determines how many degrees the autopilot must

change the vessel’s heading in order to bring the vessel back on

track, using the Cross Track Error and the vessel’s speed (refer

also to the Operator Manual/User Set-Up Menu/Nav Mode).

Range: 0.5 to 7.

Default: Depends on the boat length.

Minimum rudder

Some vessels may have a tendency of not responding to small

rudder deflection around “used” midship position because of a

possible rudder deadband or whirls/disturbance of the water-

stream passing the rudder.

By setting the Minimum Rudder to a certain value, the autopilot

will add this value to any given rudder command.

The amount of rudder command is determined by adding the

minimum rudder value and the rudder deadband value to the p-

factor value.

1 2 ... 87 88 89 90 91 92 93 94 95 96 97 ... 133 134

Comments to this Manuals

No comments

Simrad AP50 Installation Manual Page 92

Comments to this Manuals