Raymarine P70, Installation & Operation Instructions

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Drive settings
The Drive Settings menu can be accessed from: Menu > Set-up > Autopilot Calibration > Drive Settings .
Note: Not all options are available when Calibration Lock is turned On.
Item Description Options
* Rudder gain Rudder gain is a measure of how much helm the autopilot will apply to
correct course errors.
A higher setting results in more rudder being applied. The rudder gain
setting is set automatically as part of the Auto Learn process.
• 1 — 9
* Counter rudder Counter rudder is the amount of rudder the autopilot system applies to
try to prevent the vessel from yawing off course.
A higher counter rudder setting results in more rudder being applied
• 1 — 9 Do not set to 0.
Rudder damping On autopilot systems with a rudder reference transducer, you can set the
rudder damping to prevent autopilot ‘hunting’.
Increasing the rudder damping value reduces hunting. When adjusting
the value, increase the setting one level at a time until the autopilot stops
hunting. Always use the lowest acceptable value.
Rudder Damping
• 1 — 9
• 3 (default)
Rudder limit If a rudder reference transducer is fitted, this screen is used to set the
limits of the rudder control just inside the mechanical end stops, and
thus avoid putting the steering system under unnecessary load. This
should be set when commissioning the system. The limit should be set
to approximately 5 degrees less than the maximum rudder angle.
Note: If no rudder reference has been fitted you MUST ensure that
adequate provision is made to prevent the steering mechanism from
impacting the end stops.
• 10º — 40º
• 30º (default)
Rudder offset This specifies the offset from amidships (zero adjustment). • -9° to 9°
Reverse rudder ref This reverses the phase of the rudder reference display.
Note:
This option is not available unless you have a rudder reference
transducer fitted.
Note: This option is not available on SeaTalk systems, so you would
need to reverse the RED and GREEN wires on the Rudder Reference
connection to the course computer.
• Port
• Starboard
* Auto Trim The Auto Trim setting determines the rate at which the autopilot system
applies ‘standing helm’ to correct for trim changes caused by varying
wind loads on the sails or superstructure. The default Auto Trim is set
as part of the Auto Learn process.
If you need to change the setting, increase the Auto Trim one level at a
time and use the lowest acceptable value:
• If the autopilot system gives unstable course keeping or excessive
drive activity with a change in the heel angle, decrease the Auto
Trim level.
• If the autopilot system reacts slowly to a heading change due to a
change in the heel angle, increase the Auto Trim level.
• If the Auto Trim level is too high, the vessel will be less stable and
snake around the desired course.
Setting
• Off
• On
Adjustment
• 1 — 4 1 = Slowest, 4 =
Fastest
• 1 (default)
Auto Turn This setting defines the amount of course change when performing an
auto turn.
Note:
This option cannot be changed when connected over SeaTalk.
Note: This option is only available on motor vessels.
• 10º — 125º
• 90º (default)
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p70 / p70R