Table of Contents
Advertisement
monitored by the electronics and shown in plane text on the display.
Refer to the Detailed Debug list, page 5-45
The routine will monitor the signals on both course detectors if two
magnetic compasses are connected.
Gyro Compass
The AP9 MK3 will normally interface to the repeater signals of a
gyrocompass.
Upon delivery the Control Unit is prepared only for connection to
magnetic and fluxgate compass and gyro compass with serial
interface.
When connecting to other types of gyrocompasses, an extra circuit
board (AP9 MK3 Gyro Interface Board) must be mounted in the
Control Unit. This board is mounted to the Interface Board by means
of a 40 pins plug and 4 spacers. The spacers are already mounted on
the Gyro Interface Board which is plugged into the Interface Board
without screw connections. If the Autopilot is ordered for gyro
compass interface the Gyro Interface Board will be factory mounted.
Further more, the Control Unit must be set up for the correct type of
gyro, correct phase- and reference voltage and whether gyro signal is
autopilot excited or not. This is done by means of DIP switches (two
packages with 8 switches in each), mounted on the solder side of the
Interface Board.
All switches are factory set to OFF position.
Note !
Initially check the position of SW1-7 and 8 (excitation) carefully.
These switches must be in OFF position prior to setting up the
interface and connecting the gyrocompass.
The set-up is done in accordance to Dockside Alignment/test; page
5-49.
Electrical connections
Connection of the different types of gyro compasses are shown in the
External Wiring Diagram or the diagrams on the next pages.
Gyro compass with synchro output is connected to J2 of the Control
Unit.
Gyrocompass with stepper output (24-70V DC) is connected to J3 and
the connection is polarity independent.
Gyrocompass with current loop (serial data) output is connected to J3
of the Control Unit.
20169223D
Installation
5-7
Advertisement
Table of Contents
