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(DG) Rudder driven hardover to starboard
02-02-18, 05:33 PM (This post was last modified: 02-09-18 10:16 AM by Derek - Raymarine - Moderator.)
Post: #1
(DG) Rudder driven hardover to starboard
I have a ST5000+ with a Type 1 Rotary drive motor. When the autopilot is engaged the motor is engages like normal but after about 10 seconds, and WITHOUT pressing any other buttons on control head, the motor drives the rudder hardover to starboard and continues to drive until I press "standby."

The rudder reference bar indicator is correct and corresponds with the direction helm is turned.

The control head software is version 14.

Any help would be greatly appreciated.

Jeff
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02-09-18, 10:14 AM (This post was last modified: 02-09-18 10:17 AM by Derek - Raymarine - Moderator.)
Post: #2
RE: (DG) Rudder driven hardover to starboard
Hi perse111

Thank you for your enquiry.

If this symptom happens when the boat is stationary, then it is likely that the Autopilot is operating correctly, with the boat tied up stationary, if you engage AUTO and select +10, then the Autopilot will initially drive the rudder to Starboard a few degrees - then stop. After about 10-20 seconds, the drive will then 'nudge' all the way over to STARBOARD until the Autopilot is returned to STANDBY. This is Normal, the boat is not turning and so the Autopilot keeps trying to turn the boat until the boat turns and the compass shows some heading change.

If however, the drive moves constantly and at full speed to STARBOARD, this is incorrect and suggest a malfunction.

if this happens whilst the boat is underway, then this also suggests a malfunction.

The next thing to check is the compass operation, click here for test details . If the test is fine, then check for local deviation, , click here for further information , and click here too.

If you can identify the compass is at fault, this will need to be replaced, otherwise the ST5000 control unit is defective and must be returned to a Raymarine workshop for further investigation.

regards
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