p strong SP-120 System with Rudder Feedback - No Drive Unit nbsp strong p p strong The SP-120 autopilot control system comprises the following units strong p ul li SP-120 display and control head li li SI-TEX 9 Axis rate compass li li Rudder Feedback Unit SP-120R only li ul p In addition the SP-120 has to be connected to a drive unit which controls the rudder actuator system in order to complete the full autopilot system The actuator system provides the physical movement to the rudder responding to the direction of control signals provided by the SP-120 nbsp p p strong A rudder actuator system comprises one of the following strong p ul li Hydraulic system with helm pump and ram li li Mechanical steering system li ul p strong The autopilot should be connected to one of the following strong p ul li Reversing motor pump set connected into the existing hydraulic steering system li li Reversing mechanical drive unit connected to the existing steering mechanism li li Electronic Hydraulic Solenoid Valves li ul --- cis2 mmxtmJVt --- br
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