• On September 1st, Maine Sail suffered a major hemorrhagic stroke. One of the most generous members of our sailing community, he has helped thousands. Now it's our turn. Click here to learn more

B & G Zeus 3 intermittently powering down

Nov 24, 2010
91
Seafarer 26 Ruskin
I have NMEA 183, NMEA 2000, and Seatalk all wired together. All of a sudden it just lowers down Which of course has my auto pilot loose Where it is going. Any idea? I checked the software and it is up to date.
 
Jan 11, 2014
7,840
Sabre 362 113 Fair Haven, NY
Check all the connections to make certain they are good.

A drop in voltage can cause electronics to power down. This an happen if there is a sudden increase in the load as well as if the batteries are old or in a low SOC.

You can contact B&G tech support, but they will probably blame it on the Seatakbridge.
 
Nov 24, 2010
91
Seafarer 26 Ruskin
Check all the connections to make certain they are good.

A drop in voltage can cause electronics to power down. This an happen if there is a sudden increase in the load as well as if the batteries are old or in a low SOC.

You can contact B&G tech support, but they will probably blame it on the Seatakbridge.
Thanks. Batteries are fairly new and solar keeps them up. I am concerned with the converted seatalk that provides power and the NMEA 2000 bridge that only allows one power source. Of course it all works most of the time. I also have every,thing wired to a single 15amp breaker but they are only pulling 3 amps.
 

BarryL

.
May 21, 2004
835
Jeanneau Sun Odyssey 409 Mt. Sinai, NY
Hey,

Power TO the Zeus should be provided on the dedicated power port. The Zeus does not get power from the NMEA 2000 bus.

1634345391787.png
 
  • Like
Likes: dkdoyle
Jan 11, 2014
7,840
Sabre 362 113 Fair Haven, NY
The voltage drop can be the result of seemingly random events. For example the AP engages at the same time the refrigerator starts up, while some transmits on the VHF. Or if the batteries are small like Group 24s without much reserve capacity. Does this happen more towards the end of a sail or at the beginning? How large are the solar panels? When the AP motor engages the current draw will be much higher, I’d guess more like 7 amps. Those 7 amps will be intermittent but could be enough to drop the voltage low enough to cause the problem.
 
  • Like
Likes: dkdoyle
Nov 24, 2010
91
Seafarer 26 Ruskin
Hey,

Power TO the Zeus should be provided on the dedicated power port. The Zeus does not get power from the NMEA 2000 bus.

View attachment 199305
Thanks. I am going to move the power for the Zeus to it’s own connection rather then shared with all the other instruments and see what happens. The only other thing I can think of is overheating, but it does power back on.
 
Nov 24, 2010
91
Seafarer 26 Ruskin
Thanks for the responses. I am going to move power to a dedicated breaker and see if this gets resolved.