Naza Voltage Setting 3s 4s

[Smit80]

Hi All,

I have been running the F550 with Naza FC on 3s (11.1V) and been getting 7 minutes of flight with 1:30 of return time before I hit the 80% limit. I';ve decided to try it on 4s and so ordered a couple my question is :

Is the voltage selection option in the Naza Assistant just for the Low Voltage warning and Cutoff or does it modify some kind of voltage depnedant setting/electronic calibration (for voltage dependant components maybe?) within the firmware.

Have any of you ran the Naza FC on 4s with it set to 3s? or vice versa?

Regards

[SimonS]

If you are going to run a mix of 3s and 4s then you need to turn the Naza voltage monitor off and use an alternative system.

The Naza gives a warning at a particular pack voltage.  If yours is set for a 3s then the 4s lipo will be empty before the warning goes off. If you set it for the 4s the Naza will never get airborne on the 3s.

Use something like this instead: http://www.electriflite.co.uk/store17/index.php/lipo-monitor/lvb1-8s.html
They measure the cell voltage rather than the pack so the pack size does not matter. They have a very loud bleeper which can be heard over the noise of the motors.

[Smit80]

Thanks SimonS,

I always use an OSD displaying pack voltage and always fly by timer and then monitor how much juice is put back into each pack. I don';t use the inbuilt voltage protection and have them set very low. I was wondering if this setting modifies anything else internal to the Naza and if anyone else has tried it :)

[powerlord]

Nah it doesn';t. I';ve flown mine 4s with the settings at 3s after firmware upgrades by mistake - it';s just for voltage monitoring nowt else.

I have mine set to pull 2000 out of a 2200 4s pack.

I have 4 packs and all still going strong with over a year of use.

Stu

[Smit80]

Awesome, cheers powerlord! 
Are you running a F550 on your 2200';s? I assume you';re running 2x 2200 in parallel? What sort of kit and what flight times are you getting if you don';t mind me asking.

[powerlord]

F450.

So just a single 2200 4s.

I get about 7 mins active flight time

2 in parallel gets me around 11-12 mins but its pretty hard on the motors, etc so don';t fly with 2 packs