24 |
Operating
modes
3.4.3.2
Enable or disable Adaptive control
The Alphatron AlphaPilot MFS is Speed Adaptive and
–
provided it is used in Adaptive Mode and
calibrated for the correct vessel type (DISP or HSC)
–
will automatically set its own control
parameters for optimum steering performance. In most cases, Adaptive Mode will be preferred.
Perform the following procedure to enable or disable Adaptive control:
NOTICE
Adap
tive (automatic) ‘Weather’ control adjustment is a Type Approval requirement
of High Speed Craft (HSC) Autopilots thus the Adaptive mode must be selected for
HSC applications.
1.
Press the
CONTROL|LIMITS
button once.
2.
Use the
<
or
>
button to select
ADAPT
.
3.
Use the
-
or
+
button to select
ON
or
OFF
as required
a.
ON = Adaptive mode
b.
OFF = Non-Adaptive mode (i.e. PID control).
Unless alternative settings have been established from experience during sea passages with the
Autopilot in operation, selection of the Non-Adaptive mode will be necessary to enable primary
control settings (YAW, RUDDER, COUNTER RUDDER) to be manually adjusted.
3.4.3.3
Change the Rudder Limit
If the existence of safe limiting factors is uncertain, the Rudder Limit function
–
which otherwise
limits the maximum permissible angle of rudder applied by the Autopilot
–
can be employed to
produce small rudder angles/slow turns.
Perform the following procedure to change the Rudder Limit:
1.
Press the
CONTROL|LIMITS
button twice.
2.
Use the
<
or
>
button to select
RUDDER LIMITS
.
1.
Use the
-
or
+
button to change the value.
3.
Press the
ACCEPT
button to confirm the chosen value.
3.4.3.4
Change the steering method
Two steering methods are available for Auto (A) control mode, namely steering by ROT or steering by
RAD. The selected steering mode is shown on the top left part of the display (SET ROT or SET RAD).
To change the steering method, press the
ROT|RAD
button.
