Originally Posted by wfield0455

Setting up turbine fail safe is not done in the ECU, it's done in your transmitter. I personally have the fail-safe for my throttle channel set to OFF, which when the receiver loses contact with the transmitter causes the servo pule on the throttle channel to cease being output. IF this continues for a couple of seconds the ECU will shut down the turbine and log the shut down code as Lost RC (or something to that effect). I consider this to be very important as ANYTIME my turbine shuts down I want to know WHY. Some have suggested simply setting your throttle fail-safe to the turbine stop setting, which WILL safely shutdown the turbine but will simply be logged as a normal shutdown. I certainly don't want that as it simply throws away valuable information about the shut down cause. This of course assumes a brief loss of control and you eventually regain control. If you have a total, permanent loss of control I guess you wouldn't need to look to the ECU to know that.

Another way that the ECU uses to detect loss of RC for transmitters that don't have the ability to shut off the servo pulse is to detect and "out of bounds" throttle pule width. For example, my transmitter sends a throttle pulse of 1100us for stop, 1300us for run and 1900us for full throttle. Sending a servo pulse significantly outside that range should cause the ECU to recognize a failsafe condition, shut down the turbine and log it as lost RC. So if you simply set your transmitter failsafe to send something outside the 1100-1900us range to the throttle channel (from my example) such as 1000us, then that should do the trick as well.
That's as detailed and accurate a description of how most ECUs detect failsafe as you're going to find. I personally have used both methods with multiple JETCAT and KINGTECH turbines.