Example - Simrad Robertson AP9 Mk3 Instruction Manual

Robertson AP9 MK3 Autopilot

Example 2:

AP9 MK3
A P 9 M K II
DISTRIBUTION
SOL. THR.
ST. INT.
PCB PCB
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
1-14
A U T O P IL O T
D9X
UNIT
MODE
FREQ. (X)
Special applications, Example 2
THRUSTER SWITCH
C/O SIGNAL
+/-10V SIGN.
C/O SIGNAL
ON-OFF SIGNAL
SERVO
POT.
(U)
U/X
CONV.
FEEDBACK
Fig. 1-11
THRUSTER
ELECTRONICS
SOLENOID
VALVES
20169223D