Raymarine Evolution EV-1, Installation Instructions Manual

Page: 79 / 142

Note:
The ACU-100 and ACU-150 do NOT provide power to the SeaTalkng ® backbone. The backbone
requires a separate 12 V dc power supply.
Rudder angle reference sensor connection
A rudder angle reference sensor / transducer can be connected to the ACU to provide rudder angle
information to the autopilot system.
The connection of a rudder angle reference sensor / transducer is highly recommended, to help
ensure optimum autopilot performance.
Note: The rudder angle reference sensor / transducer is not included with all autopilot products or
system packs. Consult the Raymarine website or your local dealer for a full list of the components
included with your autopilot system. The rudder angle reference sensor / transducer is also
available separately as M81105.
A rudder angle reference sensor / transducer converts its movement information to rudder angle
in +/- degrees.
Certain environmental conditions such as cross-current can cause the autopilot system to steer
persistently to port or starboard, even when the rudder is centered. With a rudder angle reference
sensor / transducer connected to your autopilot system, you can use an autopilot control head
to specify an offset angle in +/- degrees to compensate for inaccurate rudder angle information
caused by such conditions.
The more accurate the rudder angle information, the more accurately the autopilot system can
keep to a correct course.
The rudder angle reference sensor / transducer connection to the ACU connection panel is shown
below.
ACU–100 / ACU–150 connections 79