ComNav 1500 / 1510 Autopilot - 4 -
1.3.6 Reversing Pumpsets
Various sizes and types of Pumpsets are available which
connect into the vessel’s hydraulic steering system,
pumping oil on command from the Distribution Unit so as
to drive the steering cylinder to the required rudder angle.
The reversing motor Pumpset is only operation when
carrying out a rudder command. When the vessel is on
course the motor stops. A variable speed motor drive
adjusts maximum rudder positioning accuracy. Optional
solenoid valve controlled Pumpsets are available for use
on larger vessels. Construction is splashproof.
1.3.7 Linear Drive
A hydraulic cylinder is provided for driving the quadrant of
mechanical steering systems. The cylinder is driven by
one of the above Pumpsets and includes a small hydraulic
reservoir and bypass valve that frees the hydraulic system
when the Autopilot is not in use. This linear drive provides
a cleaner installation (being entirely below deck) and
delivers much more torque to the rudder than wheel driven
units. In case the mechanical steering should fail, the
cylinder provides a back up hydraulic steering.
1.3.8 Solenoid Valve Drive
On larger vessels the main hydraulic steering may be fitted
with a Solenoid Valve controlled power steering. In this
case the Autopilot does not need to be supplied with a
Pumpset drive unit since the Distribution Unit output can
be reconfigured with its board mounted DIP selector switch
to provide drive for steering solenoids having coil voltages
of 12 or 24 VDC.
To Next Page
Loading...
