ST4000+ with PB200 - SailNet Community
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post #1 of 7 Old 07-17-2010 Thread Starter
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ST4000+ with PB200

Fellow sailors,

I have a Raymarine ST4000+ autopilot. The fluxgate compass connected to the autopilot has died. Also my windtopmast unit is at the end of his life. So I need a new compass and wind transducer.

The PB200 seems like a perfect instrument for both of these and much more. Now the question is: will the PB200 and ST4000+ work together.

As for the wind instrument. But I am not sure about the compass, since the compass is directly connected to the autopilot instrument.

Who can tell me if this is possible and wheter I need extra hardware to make these instruments talk the same language (NMEA/SeaTalk).

Kind regards,

Gaston

raymarine.co.uk/customer-support/owners-manuals/autopilot-systems/?assetesctl915346=1424

airmartechnology.com/airmar2005/ex20/RMProducts/ElectCat.asp?ProdID=105]AIRMAR Electronic Catalog

madmariner.com/blog/ben_ellison/23638
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post #2 of 7 Old 07-17-2010
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IIRC, you can still buy a fluxgate compass that is compatible with your ST4000+ . The PB200 should be able to talk to the autopilot through its NMEA 0183 interface just fine.

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post #3 of 7 Old 07-17-2010 Thread Starter
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According to the manual, the NMEA heading data is not supported by the pilot (see chapter 5.2 of this document: busse-yachtshop.de/pdf/rayST4000plus_mk2.pdf).

But it might be possible through the SeaTalk protocol. Does anyone know?
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post #4 of 7 Old 10-10-2010
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Gaston:

Have you considered the PB150, NMEA 0183?

Also, do you intend to mount at the top of your mast? This may not be the best place for a GPS, compass, accelerometer...

Regards,
Ted
V42#186
s/v Little Wing
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post #5 of 7 Old 10-10-2010
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Raymarine has an interface, #E85001 that converts NMEA0183/SeaTalk/RS422 that will work for you.
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post #6 of 7 Old 10-10-2010
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Airmar Weatherstation with Raymarine Wheelpilot

I've done two electronics installations using the Airmar PB150 Weatherstation and Raymarine Wheelpilots--one with an S1G Smartpilot (the one that came after yours, with separate computer and controller), and one with an ST3000 Autopilot, the one that preceded your ST4000+ MkII. Both were very successful, but neither tried to replace the Raymarine fluxgate with heading from the Airmar's internal compass.

The PB200 you propose has an even better compass than the PB150, but it is still at the top of a swinging and pitching mast. I would not recommend trying to replace the Raymarine compass with the Airmar signal. If you can afford over $1000 for the PB200, consider spending $100 more (street) for a new Raymarine fluxgate internal coil. Then use the Airmar compass (and GPS) for backup. Seatalk will prioritize the duplicate signals.

Your ST4000+ MkII controller will read NMEA 0183 wind direction and GPS sentences through its NMEA IN port, but will not read a compass heading sentence. If you want to introduce the Airmar compass heading to Seatalk, consider purchasing a Raymarine E85001 Interface box ($130 - street).

Hope this helps,
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post #7 of 7 Old 10-11-2010 Thread Starter
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Thank you all for your responses.

I do have the Raymarine E85001 Interface box, so I suppose I can solve the problem of transfering the heading information from the PB to the ST4000, although I am concerned about the amount of data that is on the bus.

I notice that many of you are concerned about the results when mounting the PB in the top of the mast. In my opinion, the GPS information is not a problem, since all applications use damping. For wind and other weather information, the PB should be mounted at the top of the mast. The compass and accelerators are influenced the most from swinging. But I thought that the accelerators are ment to correct this swinging (see 'unserpassed heading' in http://www.airmartechnology.com/uplo...ures/PB200.pdf)


There is one positive thing about mounting a compass in the top of the mast: there is not much deviation and also moving something around in your boat doesn't change that deviation. A bad thing with some masts is that they can rotate, which changes the base angle of the compass
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