User Manual

USER GUIDE

5.12.1 Configuring Failsafe Detection

You MUST have a receiver that lets you program failsafe positions to use RTH. All modern receivers should

support this.

The Vector can detect failsafe in one of 3 ways, depending on your receiver’s capabilities. First decide which

method you want to use below, and then tell the Vector which method to use by invoking menu mode,

navigating to the “Safety Configuration Menu”, and changing the “Failsafe Detection Method” item as described

below. Then, run the Receiver Analysis Wizard so that the Vector can learn about the failsafe settings.

a) S.BUS™ Method: If you are using S.BUS™ mode with your receiver, the Vector will

detect failsafe automatically. To do this, just select the “S-BUS” option for “Failsafe

Detection Method”.

b) Mode Switch Method: If you programmed an “RTH Test” position on your

mode/submode switches, and if your radio supports it, you can program your radio

to force the mode/submode switches into the positions that trigger RTH Test when a failsafe occurs.

This is the simplest way to set up failsafe for non S.BUS™ radios.

To do this, program your receiver failsafes as described above,

and select the “Mode Swch” option for “Failsafe Detection

Method”.

c) Throttle Failsafe Method: If you are unable to program a

failsafe on your Mode switch position, or don’t want to use a

mode switch position for RTH, an alternative is to program your

throttle failsafe position to be very low – at least 5% lower than

your normal throttle range. Then, when the Vector sees the

throttle in this very low position, it can know that the receiver is

in failsafe.

To do this, first select the "Thr Fsafe" option for “Failsafe

Detection Method” in the menu.

Then, program your receiver failsafes (following your radio

manufacturer’s instructions) with your throttle trim all the way

down, as shown in the left part of the illustration.

Next, trim your throttle back up to a higher position. During normal operation, you must keep your

throttle trim well above the failsafe setting, as shown in the right part of the illustration.

When you run the Receiver Analysis wizard, the Vector will detect the low trim failsafe position when

you turn off your radio. Whenever the throttle is trimmed that low, the Vector will assume the receiver

is in failsafe. And, the Vector will learn your normal minimum throttle during the wizard, when it asks

you to set the throttle to the off position.

After you follow these steps, if the error "Throttle Failsafe Incorrect! " is displayed during

Vector bootup, that means you did not do the throttle failsafe programming correctly, or the gap

between normal and failsafe throttle trim is too small.

NOTE: If you use the throttle failsafe method with multirotors, the multirotor will descend

rapidly between the time the throttle is driven low by the failsafe condition, and when RTH is triggered.

This is normally less than 1 second. This delay should not occur or be reduced if you use the S-BUS or

Mode Switch failsafe detection methods.