installed new Raymarine es127 - it shuts down when under sail

Captpete12

Captpete12

.
Aug 1, 2012
59
Beneteau 40 Rondout Yacht Basin, New York
My new es127 MFD shuts down when under sail for two hours or so. i checked with Raymarine and they said it is a voltage (amperage ) problem. While at the dock under shore power (charger running) it stays on for hours. OK, battery problem. I sailed today and shut off my refrigerator, freezer and it seemed to make a difference; no shutdown, until I turned on the autopilot - MFD shut down. Autopilot draws amperage so it must be the same problem. started the engine (batteries charging from alternator) and the MFD stays on. I have two new wet cell 4D batteries. Do I need larger amp capacity batteries? Or, do I just use my new Raymarine es127 when the engine is running or I am at the dock? As usual, guys, any help appreciated.
 
Rick D

Rick D

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Jun 14, 2008
7,184
Hunter Legend 40.5 Shoreline Marina Long Beach CA
It's a voltage drop in the system. Don't ask how I know :-(
 
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L

LeoLambert310

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Nov 18, 2013
171
Catalina 310 Campbell River
what size wire are you using? Is this dedicated from the fuse panel? When I installed my new plotter I ran all new wire and have no problem with amp line loss.
 
Captpete12

Captpete12

.
Aug 1, 2012
59
Beneteau 40 Rondout Yacht Basin, New York
My old E80 operated with no problem. It was on the circuit breaker labeled "navigation" which included all my nav instruments (tridata, autopilot, wind indicator, depth sounder) which were all linked via "sea talk". The new es120 does draw more amperage than the old E80. Perhaps I should run a dedicate 12V line (fused) to the es127?
 
JamesG161

JamesG161

SBO Weather and Forecasting Forum Jim & John
Feb 14, 2014
7,756
Hunter 430 Waveland, MS
There is a menu on your MFD, that is system diagnostics. You will see the MFD power supply voltage display as a "snapshot" in time. When that is ≤12 VDC your SeaTalkNG stuff will start to fall off line and then finally your MFD.
______
My a98 had the same problem for nearly 6 month until the RayTechs, who did original install, ran a separate power supply line instead of ...

Sharing the Autopilot power!

Good Luck in finding the source of LOW VOLTAGE at the MFD>
Jim...
 
DougM

DougM

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Jul 24, 2005
2,242
Beneteau 323 Manistee, MI
MFD needs to be on a separate circuit if its not already. Also, the wire size is highly dependent on the circuit length (to and from. My guess is that there is a significant voltage drop. That would include resistance in any connections.
I agree with JamesG that you cannot share power with the Autopilot. I would say, even taking power from the same leg of the DC switch panel could be suspect.
 
J

JohnShannon

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Jan 4, 2010
1,037
Farr 30 San Francisco
The Raymarine stuff seems to be extremely fussy about voltage. Even a small short dip seems to put it on tilt. I ended up for instance putting a motorcycle battery right across my autopilot to prevent it tripping out on "undervotlage" a mere hour after leaving the dock fully charged.
 
Captpete12

Captpete12

.
Aug 1, 2012
59
Beneteau 40 Rondout Yacht Basin, New York
Problem solved thanks to Beneteau dealer tech. Unknown to me there is a fuse block in the harness for the MFD located under the cockpit table. There was a crimp connector in the line leading from the fuse to the MFD which was bad. When we pulled the harness out the wire actually came out of the connector! Wire size looks like a #8 so there is plenty of amperage ability. With the wire disconnected the voltage to the MFD (available on the diagnostics screen) was 6.1V - apparently that was from the sea talk circuit. When wire connected we have 12.4V. Simple solution as long as you know there is a fuse, a harness and its' location. Thanks for all the input. I am sure I will have other questions for this forum in the future :)
 
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