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Old 23-06-2011, 16:22   #1
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Auto pilot disengages

I have a Raymarine linear drive auto pilot, ST6000 control and Core pack control. It works flawlessly except for at any unexpected time it will go from engaged to standby.

Never know when nor why, often it will go engaged for three or four hours then go to standby with no warning.

No rhym or reason.

ANy thoughts on where to start troouble shooting.

Fletch
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Old 23-06-2011, 16:32   #2
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Re: Auto pilot disengages

Fletch,

How are your batteries? Raymarine equipment does not like low voltages, or voltage spikes. Like when something 12v that uses a lot of power kicks on. This was the sign (that we missed) that our old batteries were going bad.

Do you have a rudder position sensor? If not, I'd recommend one.
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Old 23-06-2011, 16:37   #3
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Re: Auto pilot disengages

Quote:
It works flawlessly except for at any unexpected time it will go from engaged to standby.
Is this an oxymoron?
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Old 23-06-2011, 16:51   #4
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Re: Auto pilot disengages

Voltage spikes will cause the Raymarine 6000 to disengage. Transmitting from my single side band radio will cause the autopilot to disengage. Consequently, when I am at sea I must hand steer my vessel when using my Icom SSB. It isn't much of a big deal when I am motoring but when I am at full sail it causes a lot of excitement with crew(and the cap'n. too).
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Old 23-06-2011, 17:00   #5
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Re: Auto pilot disengages

Yes I stand corrected, it works flawlessly with the exception of this problem.

Mia a Culpa
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Old 23-06-2011, 17:03   #6
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Re: Auto pilot disengages

I believe the battery bank is in good shape, this is not a new problem, has been doing this since we bought the boat and installed new battery's. Yes, I do have a rudder sensor.
Recently I motored for four hours with the mast down, The things with electric draw were the auto pilot, speed, depth, C80 and the LED running lights.
The engine alternator was charging well ( 100 amp Balmar) and it still went to standby twice. I do not believe the voltage level was under 13.2 +/- volts
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Old 23-06-2011, 19:21   #7
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Re: Auto pilot disengages

My ST6000 does this, too. New batteries, no SSB. S2 corepack, hydraulic drive, rudder sensor.

Now, I do get LOW BATT warnings from time to time. Of course my batteries are fine, so I think there is a voltage drop somewhere, probably from a bad connection. That may be contributing to the Auto/Standby problem, but it isn't really an excuse.

Low voltage or not, silently going to Standby is a serious problem in an autopilot IMO.
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Old 23-06-2011, 20:05   #8
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Re: Auto pilot disengages

Very serious. This happens way to often in ray autopilots.
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Old 23-06-2011, 20:10   #9
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In my experience the following causes dropout to standby

Low voltage - warning given
No response to linear arm - warming
Nav data heading errors. - some warnings
Loss of waypoint - warning

Power spikes - no warning ( essentially a reset)
Software bugs. - no warnings

Check you have the latest software.

Dave
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Old 24-06-2011, 07:09   #10
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Re: Auto pilot disengages

If the drive is hydraulic, make sure the connections to the locking solenoid are good, and that the solenoid is OK.

Mark
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Old 24-06-2011, 08:34   #11
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Re: Auto pilot disengages

CD, With the Raymarine, there are only a few things you can troubleshoot. Go through the system and check every connection, don't neglect any, including the Seatalk wiring. Look for anything loose or corroded. Once done, do a complete factory rest on the unit. You will need to recalibrate it again. If that does not help, you will need to send the Course Computer or drive motor back to Raymarine. This is a common problem even if the Raymarine Techs tell you it is something they have not heard before. If the issue is not a bad connection or low voltage, be sure and check all grounds too, then you will need to send the computer or motor back. Chuck
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Old 24-06-2011, 09:23   #12
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Re: Auto pilot disengages

Shorts will cause this easily and there may be nothing wrong except a shorting wire. Any wire that can flop about or a bad crimp. I would agree with Chuck you need to check all the wires and connections. Any wire that can flop a little bit could be the culprit. Signal ground or power will do this.
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Old 24-06-2011, 11:06   #13
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Re: Auto pilot disengages

We had a similar problem on our previous boat equipped with an Autohelm 5000.
The problem turned out to be a Standby/Duty/Vane switch which had gotten wet with salt on the connectors, thus fooling the autopilot.
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Old 24-06-2011, 12:46   #14
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Re: Auto pilot disengages

Quote:
Originally Posted by goboatingnow View Post
In my experience the following causes dropout to standby

Low voltage - warning given
No response to linear arm - warming
Nav data heading errors. - some warnings
Loss of waypoint - warning

Power spikes - no warning ( essentially a reset)
Software bugs. - no warnings

Check you have the latest software.

Dave
Gee--Six ways to make you hand steer, or would the off-course cut-out make seven??

Is this the same Dave that was extolling the virtues of Raymarine autopilots over Simrad?? Autopilot Computer Simrad vs. Raymarine
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Old 24-06-2011, 14:26   #15
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Re: Auto pilot disengages

I am about as low tech as you can get but I have had the same problem that I have not figured out, with Ray Marine E80 chart plotter, GPS, AIS, radar, autopilot all hooked together. I have read that there is a type of occurance screen on your E80 that you can call up to look for errors that happen during the time that you have run the system. It will not store anything so you can not turn it off and look later. You could leave your system on at the lock and try to pull up this screen to see if it will help you identify the problem. Remember, if I were all that smart I would have figured out my system!!!
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