Eagle Tree Vector - Manual (Page 20)

USER GUIDE
20
3.5.5 Receiver Connection Harness Load Capacity (Fixed Wing Only)
With typical fixed wing electric model wiring, the ESC’s BEC is connected to the Vector’s throttle output
channel. This BEC powers the servos, and all servos are connected to the Vector’s servo outputs. If you
have this configuration, please skip this section.
Also, skip this section if you do not have large servos, or if the BEC or battery powering your servos is rated at 6
amps continuous or less (the vast majority are).
If, however, the AIL lead of the Vector’s receiver connection harness takes power from your receiver, and this
powers large servos you have connected to the Vector, OR, you have large servos connected to both your
receiver and the Vector, please read the following:
You should not allow more than 6 amps continuous current to flow through the AIL wire.
Note also that the AIL lead of the harness should not be excessively warm after flying, which could indicate that
too much current is passing through it.
If your configuration could result in more than 6 amps continuous current flowing through the AIL wire, there
are two ways to supply additional power to your servos:
 If you are not using all the servo output connections on your Vector, a male to male servo wire (with
the signal line cut!) can be connected between a free servo channel on the Vector, and a free channel on
your receiver.
 If all the servo connections on the Vector are being used, a male/male/female Y cable (ET p/n CAB-Y-1
or similar) with the signal line cut can be used to provide additional power to the servos, as shown in
Figure 3.
3.5.6 Powering your Receiver on Multirotors
Voltage from the 5V tap “B” can normally be used to power your receiver on multirotors, eliminating
the need to have an additional BEC. One way to do this, assuming the 5V tap is not being used for your camera
or transmitter, is to connect a female JST to male servo adapter cable from the 5V tap to a spare receiver
channel. If the 5V tap is already being used, you will need a Y cable to do this.
However, remember that power will go from your receiver to the Vector’s servo outputs, via the red wire of the
“Ail” connector on the Vector receiver harness. If your ESCs are not optoisolated from their receiver inputs,
this voltage will power the ESCs even if the ESC main power connector is not plugged into the Current
Sensor/PSU. If your ESCs produce startup tones when the receiver is powered from the Vector, but the ESC
main power connector is not plugged into the Current Sensor/PSU, the ESCs are not optoisolated.