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Switched power for raymarine evolution autopilot?

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Switched power for raymarine evolution autopilot?

Old 04-10-2016, 02:17 PM
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Default Switched power for raymarine evolution autopilot?

Just had auto pilot installed. The system is installed on the backbone which has constant 12v unless the battery switch is off. I can power off the display but the led's on the ACU & heading sensor stay on. Not sure if this is correct as Raymarine's instructions are unclear. If correct I assume there is a draw on the battery ? Anyone know for sure ? Thank you !
Old 04-10-2016, 04:58 PM
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There may be a switch on the ACU connector board to turn off the Seatalk backbone power.
This is used if the Seatalk backbone is connected to a conventional N2K network powered from elsewhere as there should be only one power source to the network.

You may have an N2K network already installed and the installer has tapped into it.

This ACU switch probably enables the pilot to be off but the compass and other equipment to be powered as network loads, as well as powering the CANbus ICs.

Having the pilot off and network on enables the MFD to display Mag Heading instead COG heading and radar overlay etc which may not be of use to you..

Fitting a master switch on the dashboard to isolate the pilot is common practice but it also kills the Seatalk network power. This is not an issue if the ACU switch is normally set to off and N2K power is provided from elsewhere.
Old 04-10-2016, 09:10 PM
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Here is a MUCH better explanation for the "Sleep Switch" used on Raymarine Evolution Autopilots. :thumbs:


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