Wiring an audible alarm to a chart plotter across NMEA 2000

[matt1]

I' m looking to connect an "external" Piezo buzzer to my B&G Zeus 3 plotter. I actually want the buzzer down below, possibly close to the VHF. I think the VHF is connected to the plotter via NMEA 2000 - for sharing AIS etc.

Whilst the (cockpit mounted) plotter instructions show where to connect the alarm (at the plotter end) I want to avoid running wires that distance. Does anybody know if there is a way to connect an audible alarm elsewhere on the NMEA 2000 NW? I' imagining there may be a T connector somewhere in the interior of the boat

Or, do I have to connect the external alarm directly to the plotter?

 

[MikeCC]

For any sort of ordinary buzzer, direct to plotter only (or via relay if a speaker). You can't connect anything into NMEA2000 that isn't an NMEA2000 device. If you find the NMEA2000 cable in the back of VHF, you should be able to follow it to a T into the network.

This is the B&G network alarm but you'd have to check if it will work with a Zeus3 alone rather than the H5000 system:
H5000 Audible Alarm Module | B&G Sailing Electronics

This might work, depending on whether it will respond to B&G alarm messages:
Alarm Button Programmable Sound for NMEA2000 or Seatalk NG

 

[Jamie Dundee]

Assuming the power cable is below decks the blue wire connects to an alarm.

External alarm
Blue wire on power cable:
An external alarm can be connected to one or more Zeus displays on the network. The external alarm can be a small peizo buzzer connected directly, or a horn siren connected via a relay.
Alarms are configured globally in the system i.e they can be configured on any one networked multifunction device or Triton instrument, and be seen, heard, and acknowledged from all devices. Individual devices can also be configured to not to sound their internal buzzer, but still display the alarm information. For information on configuring alarms, refer to the Alarms section in the Operator manual.

 

[matt1]

Thanks ;-)