9
Step 7 cont.
Before first use, please refer to “Servo Ratings with BEC
Enabled” notes for BEC usage guidelines. You must
follow these guidelines for safe operation. If you are
using more than 5 analog sub-micro-sized servos, more
than 4 digital sub-micro-sized servos, or servos with
higher current draw than the BEC can deliver, you will
need to disable the BEC. If you wish to disable the BEC,
you must remove the red receiver wire lead and
connector from the receiver lead housing, and then
insulate it properly to prevent shorting. When operating
with the BEC disabled, E-flite recommends the use of
a separate, high-power, external BEC (like the Ultimate
BEC), or receiver pack and switch using the following
items to ensure trouble-free operation:
1. JR 1100mAh 4.8V Ni-MH receiver battery
(JRPB4240), or similar
2. JR Switch Harness (JRPA003), or similar
Before you connect your ESC and begin flying, take
a moment to look it over. The input power side has a
black (negative) and red (positive) wire along with an
E-flite EC3 Male Device Connector. The motor side has
three 16-gauge wires (blue, red, and black) with 3.5mm
female gold bullet connectors on the ends.
The black and red wires with the EC3 Device (DEV)
Connector will connect to your power battery. The red
wire connects to the red wire on your battery pack, the
black wire connects to the black wire on your battery
pack. If the wires are reversed, the ESC may be dam-
aged. YOU MUST ENSURE THAT YOU CONNECT THE
BATTERY POLARITY PROPERLY TO PREVENT DAMAGE
TO THE ESC. Reversing polarity will void your warranty,
so always double-check this connection. Use only a
genuine E-flite EC3 Female Battery (BATT) connector on
the battery so it matches the EC3 Male Device (DEV)
connector on the speed control. The throttle lead
connects to the throttle channel on your radio receiver.
WARNING: For your safety, when checking the startup
function of the ESC or making programming changes,
please remove the propeller to prevent any potential
injury. You should always treat the motor and propeller
as live and dangerous, remembering it could start at
any time, and keep any body parts, clothing and tools
clear of the propeller arc. NEVER LEAVE THE BATTERY
CONNECTED WHEN NOT FLYING THE AIRCRAFT AND
ALWAYS REMOVE THE BATTERY FROM THE MODEL
BEFORE CHARGING AND WHEN FINISHED FLYING.
When flying in hot weather, we recommend checking on
the condition of the ESC, battery, and motor after each
flight. You may want to consider letting the electronic
components cool to near ambient temperature between
flights. We also recommend throttle management when
running near maximum levels of current draw during
extreme conditions. It is not recommended you fly an
entire flight at full throttle. If this is done, it is possible to
cause permanent damage to your motor, battery, and
ESC.
Using the 30-Amp Pro Switch-Mode BEC
Brushless Controller
This controller is very simple to use, and for safety,
will not arm the motor until the throttle stick has been
held in the Idle/Off position for more than 1 second.
The controller will indicate the soft cutoff voltage set-
ting every time you plug the battery in by first emitting
a low, long tone, to indicate startup. Depending on the
selected cutoff voltage (default is 74%), you will then
hear the respective number of medium length mid tones
to indicate the cell count or a musical tone for the 74%
cutoff, helping you to confirm the setting before every
flight. Proper air cooling is required during flights so the
ESC should be placed in an area where air flows over
the controller.
Connecting the ESC to the Motor
The three wires from the motor connect to the three
female gold bullet connectors on the ESC. The order
of connection to the motor is not important; any motor
wire can be plugged into any connector. If the motor
runs backwards, you can simply unplug and switch any
two of the motor wire plugs connected to the ESC.
Mounting the ESC
Choose a location that has good airflow and offers good
protection. Do not cover the side with the flat heat shield
with hook and loop or tape as this will greatly reduce
its effectiveness. Mount the ESC with a combination of
hook and loop, 2-sided foam tape, and/or tie wraps.
Starting Your Power System
1. Turn on your transmitter and ensure the position of
the throttle stick is set to Idle/Off.
2. Plug the battery pack into the controller. You will
hear 1 low long tone to indicate startup, then the
respective number of medium-length mid tones to
indicate the cell count or a musical tone for the
74% cutoff, followed by 3 rising tones to indicate
the controller is armed.
