Instructions of Brushless Speed controllers
Features / Specifications:
types of speed controllers especially designed to offer high power and high
efficiency combined with low weight and compact dimensions.
Automatic cut – off and auto detection of all types and number of cells.
3. Brake set to non-active
– Factory default setting
defined as a Hard start mode. Start motor quickly and be able to response to
acceleration instantly. It takes the least time for motor to reach its full
speed. This mode is suitable for these models, such as helicopter or
fan-fly, which require fast response to acceleration. Under this mode, at
the termination of a powered flight, the controllers will reduce the current
drain to the motor progressively so providing ample power to the BEC,
receiver for positive control. There is no immediate cut off but a rather
drizzle down of propeller speed and motor response. The player will not lose
the power at one moment The system will provide a very good soft landing
before the cut off of the system power. ( The system power will be cut off
when the battery voltage is down to 65% of the full battery charge voltage).
Brake set to active
defined a Soft start mode. Start slowly & steadily, without any
intermittence at full speed & with a very solid brake reaction when
actuated. It is suitable for glider / sailplane or airplanes with propeller
foldable & collectable. The cut off is sharp. The system will cut off motor
power and actuate the brake at one moment when the Power of the battery is
lower than 65% of the full battery charge voltage.
5. Over temperature
protection - Motor to be intermittently turned off when the temperature
reaches 105° centigrade.
6. Low speed control –
Be able to let motor running steadily at very low speed.
Fail safe mode - once
there is any abnormal signal or signal fail between transmitter & receiver
being detected for about 2 seconds, the controller will cut off the motor
power automatically. Once the signals get back to normal, the system will
auto-turn on again automatically.
Once the signals get
back to normal, the system will auto-turn on again automatically.
technical details of these speed controllers are:
Current (A) / Current peak
52 x 24 x 7
40 / 60
6/5, 8/5, 10/4, 12/3
2/5, 3/4, 4/3
When using fast servos or digital servos, it is necessary to reduce the
number of servos by one to two.
1. Connect the output wires of
the Speed Controller to the motor.
Plug the connector (
JR, Futaba, etc ) into the receiver throttle channel.
- Mount the speed
controller in the model at proper position with good ventilation & so as to
isolate it from vibration and shock. Allow space around it for cooling. Make
sure that there is sufficient cooling of the motor and speed controller by
ducting air through adequate
cooling holes from the outside airflow. Ventilation is extremely important
for those use voltage source over 12 V.
Assure throttle stick at correct forward or reverse direction -
Switch on the transmitter, move the throttle stick to the low speed or brake
position. Switch on the power to receiver. If there is a music of “ Do Re Mi
“, the transmitter is set at the correct forward / reverse direction.
Otherwise, after 3 ~ 4 seconds, it will sound a series beeps (- - - )
instead of tones of “Do Re Mi”. To correct this mis-direction problem,
please reverse the reverse selection switch of the throttle stick & re-start
the above process again. About two seconds after “ Do Re Mi “, there will be
a tone of “DaLa “ ( Brake non-activated) or “ DaLa DaLa” ( Brake activated
). These prompt tones are indicating the power on safe is properly relieved.
5. Motor rotating direction
- Slowly move the throttle stick for acceleration & make sure the
motor is rotating in the right orientation. Exchanging any two of motor
wires will change the motor direction accordingly. ( Warning:
Be sure not to exchange the battery wires in order to reverse the motor
direction. It will permanently damage the speed controller)
The speed controller is
supplied with the ‘brake’ non-activated. If you want to turn on the brake,
Switch on the transmitter and move the throttle stick to full speed.
Connect the battery pack and turn on the receiver switch ( if used ).
Wait 3~4 seconds.
You will hear 3 tones of “ Do Do Do “.
Right after above tones of “ Do Do Do “, move the throttle stick fast
to the low speed position immediately, you will hear two tones of “ Dala
The ‘brake’ is now turned on.
Enable or disable the brake
- The brake setting is
memorized, that means it will not be changed after disconnecting the battery
pack. When turning on the speed controller with the brake ‘non - active’,
there will always be one ‘ Dala’ tone after tone of “ Do Re Mi “. When the
brake is set active, there will be a double ‘Dala Dala’ tone after tone of “
Do Re Mi “. If you want to change the brake status, repeat the above brake
Be sure to move the
throttle stick to the brake or low speed position to relieve the power on
safe every time when switch on the speed controller. Prior to start the
motor, be sure to confirm the system feed back with the correct prompt
Once the battery
pack is connected, handle the model with extreme care – Ensure
you are well clear of the propeller at all times. Rotating propellers are
Connect the battery pack just before flight and disconnect it immediately
- Do not connect speed
controller to just ‘any’ kind of power source. Take care to ensure
Polarity of NiCd, NiMH or
LI-polymer power packs. When using the wrong polarity, the speed controller
will be severely