optikaman Veteran Location: EnglishTown N.J.
| jreaves have you forgotten that you have setup the failsafe feature on the ECU.
excerp from the jetcat manuel
Setting the failsafe for PCM receivers
If you look at the following servo travel graph, you can see how the ECU detects a failsafe condition. The dark gray bar is the transmitters throttle channel for low throttle, low throttle trim and full throttle set to 100% travel. This is the value that is set into the transmitter’s failsafe. The light gray bar is a reduced low throttle, low throttle trim travel and full throttle set to 75%. This is the value that will be taught into the ECU. If the throttle input to the ECU is between 75% for low throttle – low throttle trim and 75% for full throttle, then this would be within the normal range taught into the ECU and will operate normally. If a failsafe condition exists, the transmitter’s pre-programmed 100% low throttle, low throttle trim will be outputted by the receiver and this value would be outside of the ECU’s taught in range. The ECU will now automatically set the engine to idle (after the FailSafe delay) and start a programmable timer. The timer is set to 3 seconds by default. If the timer times out, the ECU will shut-off the engine. If at anytime during this countdown the receivers signal is reacquired, the ECU timer will be reset and the engine will go back to the speed the throttle stick is currently at.
fail safe 100%
Low ----------------------------------------------------------- High
throttle --------------------------------------------- throttle
Learned ecu 75%
To access the Fail-Safe/Hold function, enter Code 77 at the code
number access selection
To select the preset servo positions, access Code 77 as instructed
earlier. Press the numerical keys corresponding to channels 1–8
on the receiver. (Refer to Section 3.1, Channel Assignment, to
determine functions correlating to channel numbers).
When the STORE key is depressed, an audible beep sounds
and SET flashes momentarily on the LCD display above the
STORE key. The stick and switch positions are now stored in
the transmitter’s memory circuits, to be sent to the receiver’s
memory automatically.
To verify the input of the fail-safe preset positions, turn the transmitter
“off,” while leaving the receiver’s power on. Observe the
reactions of the servos. They should assume the positions that
you entered with the STORE key.
I hope this explains the fail safe setup....
Alan
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