ComNav Commander P2 & P2VS Installation & Operation Basic Operations
Document PN 29010074 V4.1 - 122 -
Power Steer Menu
The Power Steer menu contains the “mechanical” steering parameters (which are common to
all modes). To access the Power Steer menu, double-press the
P
P
O
O
W
W
E
E
R
R
S
S
T
T
E
E
E
E
R
R
button.
Figure 77 – Power Steer Menu
P.Str Limits (Power Steer Rudder Limits)
When you set up the autopilot system, you will move the rudder from hard-over Port to
hard-over Starboard so that the autopilot can measure these positions
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. These hard-over
positions are known as the “physical limits”, beyond which the rudder simply cannot be
turned. However, you can also limit the amount of rudder travel which the autopilot will allow
you to use in
POWER STEER
mode.
To do so, set the Power Steer
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Limits to the number of degrees Port and Starboard that you
would like to limit the rudder movement to. These rudder limits will be in effect whenever the
autopilot is in
POWER STEER
mode, and during all Dodge and Jog Control turns.
The minimum setting is 5°; the maximum is the same as the physical limits measured in
Dockside Setup. Setting the limits to “Off” means that the full range (up to the physical limits)
will be allowed.
The physical range beyond the selected limits of the current mode
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will be shown on the thin
bottom bar of the Rudder Angle Indicator display during normal operation – in a contrasting
colour on a colour Control Head, and in a light grey on a monochrome Head.
Auto/Nav Limits
The Auto/Nav Limits are similar to the Power Steer Limits detailed above, but they are in
effect only when the autopilot is in
AUTO
or
NAV
modes.
RAI Offset
The RAI (Rudder Angle Indicator) display at the bottom of the autopilot display may require a
slight offset adjustment in order to read zero degrees when the boat is moving in a straight
line. This is a fairly common scenario and may be due to boat loading or design, rudder
design or function, or the installation of the Rudder Follower Unit.
For example, if the boat is traveling in a straight line, but the RAI reads 2° to Starboard,
adjust the RAI Offset to Port so that the RAI display reads zero.
Note: this menu line does not appear on a P2VS operating without an RFU.
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On a P2VS, you enter those positions manually.
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P2 SPU firmware versions before 3.05 allowed the Rudder to be moved in Standby mode, with a Jog Lever, but this
feature was disabled in that version & onwards, for safety reasons.
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In STANDBY mode, the POWER STEER limits are shown.
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