Simrad Robertson AP9 Mk3, Instruction Manual, Page: 26 / 202

Robertson AP9 MK3 Autopilot
1-14
20169223D
Example 2:
AP9MKII AUTOPILOT
AP9 MK3
THRUSTER SWITCH
SERVO
POT.
D9X
DISTRIBUTION
UNIT
U/X
CONV.
THR.
INT.
PCB
SOL.
ST.
PCB
C/O SIGNAL
C/O SIGNAL
ON-OFF SIGNAL
MODE
FEEDBACK
+/-10V SIGN.
FREQ. (X)
(U)
SOLENOID
VALVES
THRUSTER
ELECTRONICS
Fig. 1-11
Special applications, Example 2
The AP9 MK3 autopilot is also designed to operate a tunnel bow
thruster, with possibility to set deadband and thruster power in the
second parameter set.
The control signal is the ±10V analogue, generated via the Thruster
Interface PCB.
The shown configuration also includes a main propulsion azimuth
thruster, operated by ordinary ON-OFF solenoid valves.
A special feedback arrangement is required to replace the standard
RF14XU. It consists of a servo potentiometer and a voltage-to-
frequency converter, to facilitate the installation of the mechanical
and electrical part of the feedback system. Contact Simrad for further
information