23
A_:50
(40...60) The rudder center position
can be adjusted (up to +/- 2 degrees)
during installation. A higher number
turns the rudder to starboard.
Ac:00
Ac=01 gives automatic intercepts of the
programmed track in NAV mode. Ac=00
offers the freedom (and responsibility)
for choosing a suitable intercept angle.
An automatic intercept will nevertheless
start, when the cross track error is less
than 0,030 NM.
A-:00
sets NMEA output from the Drivebox:
A- =00 .. Test data out (ASCII terminal)
A- =01 .. Set up flux gate HS8000
A- =02 .. HDM and VHW out (8 Hz)
A- =03 .. VHW out (8 Hz)
A- =04 .. test heading instead fluxgate
A- =05 ... CAN-Bus splitter for dual AP
Second group of parameters: A0*.. A5*
are not identical to A0 .. A5. They are two dif-
ferent set of parameters. The asterisk is not
shown on the display unit, it is only used here
for explanation!
A0*.. A5* are displayed, when A9 has been
set to zero previously. Otherwise A0 .. A5 will
be displayed.
A0*:00 Standard setting is 00. Only with pro-
portional valves set A0*=01.
A1*:00 Set A1*=00 for one single autopilot or
two parallel autopilots on two uncon-
nected rudders. Set A1*=01 for two al-
ternating autopilots or two parallel APs
on the same rudder (hydraulic system).
A2*:00 Set A2*=00 when the rudder angle sen-
sor is connected to the Drivebox. Set
A2*=01 when the rudder angle sensor
is connected remotely to the CAN-bus,
e.g. via a display unit.
A3*:00 Type of rudder sensor: A3*=00 for 90-
degree rudder sensor. A3* must be set
to 01 for 340-degree rudder sensor (re-
quires Drivebox 40L or 08L hardware).
A4*:00 (00 normally) Only for two pumps work-
ing on the same hydraulic system (as-
sisting each other), set A4*=01. With
Danfoss valves, use A4* to reverse the
output signal.
A5*:00 Set A5*=01 for voltage controlled (Dan-
foss) proportional valves.
A4:10
(05...31) upper limit for turn rate un-
der autopilot (degrees per second
heading change).
A5:05
a) Reversible Pump: This function
serves to save current. A5=05 gives a
reduction of the valve current to 1/6th
of the nominal value. For no reduction
set A5=17. A too small current bears
the risk of the valve falling open.
b) Direct driven Proportional Valve:
Minimum rudder speed is set by A5.
A5=02 results in 20% minimum valve
current, A5=17 sets min. current =
100% (maximum).
c) with switch over valve or cur-
rent regulated servo valve: A5 has
no meaning.
d) with voltage controlled propor-
tional valves (e.g.Danfoss): A5=08
A6:20
(05...28) Rudder travel limit under
Autopilot, Servo- or Fly-By-Wire
Steering. See "initial operation".
A7:13
(06...31) Basic rudder gain. Corre-
sponds to magnitude of rudder de-
flections for heading corrections. The
gain should be set as high as possi-
ble, to enable powerful rudder deflec-
tions, if needed. However a too high
gain could result in heading oscilla-
tions, when the rudder drive is
slow.
A8:01 A8:00=with tillerbutt.on AUX-1; 01=w/o
A8: Terminal 1-4:
Terminal 7-8:
02
Cool.Fan (1-2)
revers. AP-Pump
03
Bow Thruster
revers. AP-Pump
04
AP-Valves L/R
Bow Thruster
05
Stern Thruster
revers. AP-Pump
06
AP-Valves L/R
Stern Thruster
07
Stern Thruster
Bow Thruster
A9:05
a) (01...10) Stopping distance of the
rudder drive at full speed. Faster
drives need higher numbers. Try the
lowest possible number which is not
resulting in rudder oscillations. Note:
rudder oscillations are not to be mis-
taken for heading oscillations and
may be present with the vessel
moored in port, when the autopilot or
servo steering is on.
b) A9 is not applicable for Servo
Valves.
AA:12
(06...50) Insert here the maximum
boat speed in knots. Rudder gain will
be reduced linearly with increasing
log-speed (or GPS-speed), so as to
reach 50% at the maximum inserted
speed.
