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Welgard 65A Brushless ESC












Max Continuous
Current:
65A on 2-3 Li-Poly Cells,
40A on 7 Li-Poly Cells
BEC: No
Input Voltage: 2-7 Lithium Polymer
6-20 NiCD/NiMH

Hookup Instructions:
1. Solder an appropriate connector on the battery + (red) and
battery (black) leads. We recommend Deans Ultra or
Anderson Power Pole connectors. If using a polarized
connector, make sure the polarity matches your batteries,
and make sure your connector can handle 65 amps of
current.
2. Connect the three motor wires to your brushless motor
(ignore the wire colors). If the motor spins in the wrong
direction, swap any two of the motor wires to reverse the
direction. We recommend using gold plated spring
connectors (also known as bullet connectors) between the
motor and the speed control to facilitate swapping the wires.
Make sure to cover the bullet connectors with heat shrink
tubing.
3. Plug the servo connector into the appropriate channel on
your receiver. Most receivers use channel 3 for the throttle,
but some use channel 1. Consult the manual for your
receiver for details. The red wire on the servo connector is
positive (+), the brown or black wire is negative (-), and the
orange or white wire is the signal.
4. Make sure your transmitter throttle channel is not reversed.
Most Futaba transmitters have the throttle channel reversed
by default.
5. Before flight, you must program the battery type, number of
cells, and cut-off voltage. See the next page for
programming instructions.
6. Install your ESC in a location in your airplane that receives
good cooling airflow. Keep the motor and battery wires
away from your receiver and antenna.

Notes on the BEC:
This speed control does not have a built-in battery-eliminator circuit
(BEC). You must either use a 4.8V receiver pack, or use a separate
switching BEC to provide power to your receiver.

Programming Instructions:
1. Connect your motor and receiver to the speed controller, but
do not connect the battery yet.
2. Turn on your transmitter and move the throttle stick to the full
throttle position (full up).
3. Connect your battery and the controller will initialize with a
musical tone.
4. After 3 seconds, the controller will start beeping a sequence
of short tones representing a parameter that you can
program. Each sequence is repeated 3 times. The
parameters are:

1 Beep
Cell Type and Number of Cells


2 Beeps Throttle Setting


3 Beeps Brake Setting


4 Beeps Direction and Cutoff Type


5 Beeps Timing Mode


6 Beeps Pulse Width Modulation (PWM)
Table 1 Programming Parameters
Bat +
Bat -
RED +
BLACK +
To Rx
To Motor
Welgard
65A
ESC
BP Hobbies LLC
140 Ethel Road W Suite J
Piscataway NJ 08854
732-287-3933
www.bphobbies.com
support@bphobbies.com

Welgard 65A
Brushless ESC 5. When you hear the sequence for the parameter you wish to
program, move the throttle stick to the center position.
6. The controller will then start beeping a morse code
sequence of short and long beeps representing the possible
options you may choose for the selected parameter. See
table 2 for a list of all programmable options. Each option
sequence is repeated 3 times. When you hear the sequence
for the option you wish to select, move the throttle stick back
to the full up position.
7. The controller will then save the selected option, and sound
a long beep as a confirmation. It then goes back to the
beginning of the programming sequence (step 4)
8. Setup all the parameters you need to change. When
complete, move the throttle stick to the lowest (down)
position. The controller will save all options and re-initialize
in normal running mode so you can start your motor.

The table below summarizes the various programming options
for each parameter:

1. Cell Type and Number of Cells


1 Short + 1 Long
NiMh/NiCD Auto Cell Count - 0.8V/Cell
Cutoff Voltage

1 Short + 2 Long
7S Li-Po (25.9V) 21V Cutoff Voltage

1 Short + 3 Long
6S Li-Po (22.2V) 18V Cutoff Voltage

1 Short + 4 Long
5S Li-Po (18.5V) 15V Cutoff Voltage

1 Short + 5 Long
4S Li-Po (14.8V) 12V Cutoff Voltage

1 Short + 6 Long
3S Li-Po (11.1V) 9V Cutoff Voltage

1 Short + 7 Long
2S Li-Po (7.4V) 6V Cutoff Voltage
2. Throttle Setting


2 Short + 1 Long
Auto Throttle Range


2 Short + 2 Long
1.1ms to 1.8ms


2 Short + 3 Long
Hard start


2 Short + 4 Long
Soft start
3. Brake Setting


3 Short + 1 Long
No Brake


3 Short + 2 Long
Soft Brake


3 Short + 3 Long
Medium Brake


3 Short + 4 Long
Hard Brake
4. Direction and Cutoff Type


4 Short + 1 Long
Clockwise Rotation


4 Short + 2 Long
Counterclockwise Rotation


4 Short + 3 Long
Soft Cutoff


4 Short + 4 Long
Hard Cutoff
5. Timing Mode Setting


5 Short + 1 Long
1� - For 2-4 Pole Inrunner Motors


5 Short + 2 Long
7� - For 6-8 Pole Motors


5 Short + 3 Long
15� - For 10-14 Pole Outrunner Motors


5 Short + 4 Long
30� - For 10-14 Pole High-RPM
Outrunner Motors
6. Pulse Width Modulation (PWM) Setting


6 Short + 1 Long
8KHz For low RPM and low pole
count motors

6 Short + 2 Long
16KHz For most outrunner motors
Table 2 Programming Values