Setting Turn Rate Limit; Setting Off Course Alarm; Rudder Limit - Raymarine ST70+ Operating Manual

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the lowest acceptable value. The range of settings is from OFF (no trim correction) to
6 (fastest trim correction). Do not attempt to adjust the AutoTrim setting, until you have
sufficient experience using your autopilot system.
To adjust the AutoTrim:
1. With the Drive settings menu displayed (see
Preliminary procedure above), scroll to
AutoTrim then press
page.
2. Scroll to set a the next AutoTrim value (up or
down as appropriate).
OK
3. Press
Drive settings menu.

Setting turn rate limit

The turn rate limit defines your boat's rate of turn
under autopilot control. To set this:
1. With the Drive settings menu displayed (see
Preliminary procedure above), scroll to Turn
rate limit then press
limit page.
2. Scroll to set the value you want for turn rate,
from 15° to 30° per second, in 1° steps
OK
3. Press
Drive settings menu.

Setting off course alarm

The off course angle is the maximum deviation allowable from a plotted course. If this
angle is exceeded for more than 20 seconds, the Off Course alarm sounds. The Off
course alarm page enables you change the off course angle. To do this:
1. With the Drive settings menu displayed (see
Preliminary procedure above), scroll to Off
course alarm then press
course alarm page.
2. Scroll to set the value you want for off course
alarm, from 15° to 40° in 1° steps.
OK
3. Press
Drive settings menu.

Rudder limit

The Rudder limit page is available only if the rudder reference option is fitted, to
enable you to adjust the rudder to avoid putting strain on the end stops. To do this:
1. Use the Preliminary procedure above to display the Rudder limit page.
2. Turn the wheel to move the rudder:
• To the port end stop and note the angle on the rudder bar.
• To the starboard end stop and note the angle on the rudder bar.
OK
to display the Autotrim
to save the setting and return to the
OK
to display the Turn rate
to save the setting and return to the
OK
to display the Off
to save the setting and return to the
ST70+ User Reference Manual
AutoTrim
The amount of standing rudder applied
i
to compensate for wind drift.
Press OK to accept
Turn Rate Limit
deg/sec
Turn rate limit sets the maximum
i
rate of turn under pilot control.
Press OK to accept
Off Course Alarm
Off course alarm defines the course
i
error at which an alarm is sounded
Press OK to accept
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