FM30 User Manual V1.1
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7 FAIL-SAFE
FM30 supports Fail-Safe function. If your transmitter lost control to receiver, Fail-
Safe function runs automatically and immediately to protect your model from a
crash.
About Fail-Safe
S.Bus Communication
No Fail-Safe channel value is required. S.Bus protocol supports marking the “Fail” position.
When FM30 transmitter lose control to receiver, receiver outputs “Fail-Safe” commands to flight controller
for RTH or landing.
PPM / PWM Communication
Fail-Safe channel value is required.
When FM30 transmitter lose control to receiver, receiver outputs the Fail-Safe channel value to command
flight controller for RTH or landing.
Let’s take an example of PIX / APM flight controller. The condition that flight
controller enters “Fail-Safe” is “throttle channel output lower than 975”. So, we
should set a signal in our radio transmitter that throttle channel outputting is lower
than 975 for entering “Fail-Safe”.
Mark: Setting steps are different for different flight controllers. Please refer to manuals
of flight controllers or aircrafts for detail.
