autopilot servo offline

[S5_aero]

yesterday when i went flying i received the audible caution message as i taked off. this probably acured because of light back wind and ground speed was over 20 before i got live airspeed indication.

but this got my attention and there was a warning message showing ROLL SERVO OFFLINE. i recycled power to the servos but it didn't make any difference. the autopilot button on screen was red with sign ap err and menu was unavailable. so i tried to turn it on via off switch by pressing it for few seconds and it turned on but roll was not engaged.

i will take a look at wiring next time i go to plane as i didn't have any tools with me yesterday. if you have any suggestion for where to start searching for problem please let me know.

 

[jakej]

Was the autopilot working properly before this event ?

Jake J

 

[S5_aero]

yes, autopilot was working properly till now. few (cca 20h) fly hours before there was an upgrade on system. it was added second screen, second adahrs, but there shouldn't be anything done with autopilot. the instalation was made by manufacturer of the plane.
first i will check the wiring to the servo.

 

[jakej]

Ok - did it have this issue just after the hardware changes ? If so then I'd do a network re configure.

Jake J

 

[S5_aero]

I encountered the same problem with roll servo offline.

I just replaced the touch screen at european dealer and everithing was working fine. after first flight cca 45 minutes there was no problems. then after second flight there was no problem it lasted 1 hour and 10 minutes. i arrived to my home base and then 15 minutes later i wanted to go flying again with friend and i received the roll servo offline warning massage. i restarted both screens it didn't help, restarted only servo motors and it didn't help. then i made a force network load and nothing was better. So i didn't went flying after this.

I did make a diagnostic file download. can i send it to you dynon?

 

[Dynon]

So if the servo is reported as being offline, the diagnostic log won't see it at all. As far as SkyView can tell, the expected servo is not electrically connected. There are two most likely reasons for this: One, it's electrically not connected. If something has happened to the SkyView Network wiring between the servo and the display, or if the servo is not receiving power, SkyView won't see it. the other possibility is that there is something wrong with the servo. One way to test the former is to try hooking up your pitch servo to the roll wiring, if you can do that without too much trouble. Beyond that, get in touch with our support staff at 425-402-0433 or support at dynonavionics dot com for further help with this issue.