Autoquad ESC32 2r1 Benutzerhandbuch - Seite 6
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3 - Final checks before powering up
All ESC32 are tested in factory, before beeing released. Since it´s a delicate
piece of electronics running high currents, you should Inspect your soldering
carefully and make sure there are no shorts or solder splashes before
powering up the first time. Measure with multimeter (if you have one) for
shorts across the main power, PWM and the 3 motor phases.
First time you power up the ESC32, we recommend to have the 5V option
selected and hook it up to the AutoQuad widget in Qgroundcontrol or CLI via
the UART interface without main power connected.
Alternatively you can hook ESC32 to a simple servotester or receiver with 5V
on the PWM interface. Don´t connect main power yet!
If the ESC32 gets 5V and a PWM pulse width of at least 750 microseconds, the
green LED will light up showing you that the ESC32 is receiving a valid signal
from your FC, RX or servo tester.
You can now connect a power source to main power and check if the motor
runs when you increase throttle. A current limited power source is highly
recommended when doing the first tests! A 9V/500mA DC adapter can be
used for this purpose.This will secure nothing gets burned in case you have a
short in your soldering somewhere. If you connect directly to a highcurrent
source (like a LiPo battery) and there is a short, you can fry both ESC, battery
and motor very quickly.
Summary: Inspect your soldering carefully and test the ESC32 on a limited
supply before connecting it to a LiPo battery or other highcurrent source)
ESC32 is now ready to run as a standard PWM ESC with a very high motor
refresh rate and a 1000-1950us throttle range with the motor start at 1100us.
As such it can now be mounted to your favorite multi and flown right away.
4 - Current and cooling considerations
How much current you can actually draw from ESC32, depends ultimately on
how good they are cooled.
Our general recommendation is, that with "normal" continuous current at
under 10A per motor, special cooling considerations are not needed. The
gate-driven design means that the ESC´s wont warm up considerably when
run at low currents.
The upper limit is probably upwards of 50A, but that will require extremely
good cooling. The factory default for the current limiter in the firmware is 20A
continuously. Going beyond that limit will require attention to proper cooling
and temperature of the ESC.
Bear in mind that most "normal" setups under 3kg will stay well under 20A
continously per motor in normal flight conditions and hover (or something is
very wrong with your choice of motors and props).
Always test your individual setup and if you see signs of the ESC heating up
it means you should add cooling. The better you cool your ESC´s, the more
efficient they will also be so! In theory, they should continue to operate up to
around 70-80 celsius, but they will age faster when run at high temps!
The best strategy keep ESC´s cool in a multirotor, is to place them in the
wash from the rotors (Ideally right under the motors). In frames where that
is not possible because of wiring considerations or if running high currents,
heatsinks should be applied to the FETS on both sides. In general its not good
practice to place ESC´s in tight places without any airflow, especially if running
high currents!
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