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• Steering with Yokogawa Autopilot
Notes
Accuracy of Route Steering
Accurate route steering is defined as small cross track error when automatically following the route. Two of the
Route Parameters - Drift compensation and Gyro error compensation - have a significant effect for accuracy of route
steering. If you need most accurate route steering, then both of these parameters should be enabled. Before
activating the Gyro error compensation read chapter Gyro error correction to understand the possible methods for
gyro error compensation.
Description of alarms with Yokogawa Autopilot
Alarms
• the ECDIS control panel ALARM ACK lamp goes on
• type of alarm is displayed on the display ECDIS screen as number and text
• alarm is acknowledged by pushing the ECDIS control panel ALARM
• list of typical alarms:
2451 Route: WP approach alarm
2452 Route: Turning disabled
2455 Route: Off course
2456 Route: WP approach error
2458 Route: Last WP approach
2460 Pilot: ROT will be exceed
2461 Route: ROT will be exceed
2468 Disabled - out of course
2469 Autopilot: Off course
2470 Disabled: Needs filter ON
2471 Autopilot mode conflict
2475 Route: Needs filter ON
2476 Route: Needs log sensor
2485 Route: WP prewarning
Errors
Errors should not happen during normal operation. They are related to internal problems.
Integrated operation related alarms
• the ECDIS control panel ALARM ACK lamp goes on
• type of alarm is displayed on the display ECDIS screen as number and text
• alarm is acknowledged by pushing the ECDIS control panel ALARM
• list of typical alarms:
2480 Auto pilot receive error
2488 Integrated steering lost
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