Indicated voltage

jgreen_sg

Flying is great, but I really like building!
Joined
Aug 14, 2013
Messages
5
Location
Vancouver Island BC
Been using my HDX with EMS for a while.
The bus voltage now suddenly shows Zero. Everything else is normal. Battery is fully charged. Where do I start to trouble shoot?
 

BlueCrab

New Member
Joined
Jan 6, 2024
Messages
4
Begin with your schematic... and checking that connectors are secure and tight to your EMS module, I assume an SV-EMS-220. Bus voltage should be on pin 1 of the 37-pin connector that feeds the EMS module.
 

MikeD

Member
Joined
May 14, 2023
Messages
67
What are you seeing for amperage when this occurs?

Check all your cables. Make sure they are well seated.

Pins 1 & 2 on your EMS harness is where voltage is measured. Pin 1 is typically your main bus voltage, pin 2 would be for a custom point.

Measure the voltage coming into pin 1. If it’s not 0 call Dynon. Most likely an EMS issue
 
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