Manual of Brushless Motor Speed Controller HW-SM003ENG-20120606 Page 1 of 2
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Thanks for purchasing our Electronic Speed Controller (ESC). High power system for RC model is very dangerous, please read
this manual carefully. In that we have no control over the correct use, installation, application, or maintenance of our products,
no liability shall be assumed nor accepted for any damages, losses or costs resulting from the use of the product. Any claims
arising from the operating, failure or malfunctioning etc. will be denied. We assume no liability for personal injury, property
damage or consequential damages resulting from our product or our workmanship. As far as is legally permitted, the
obligation to compensation is limited to the invoice amount of the affected product.
Specifications:
（
Note: The Skywalker-6A,12A,12AE, 30A,60A and 80A are only used for RTF applications
）
Skywalker-6A 6A 8A Linear 5V/0.8A 3 servos 2S 5-6 cells 5.5g 32*12*4.5
Skywalker-12A 12A 15A Linear 5V/1A 3 servos 2 servos 2-3S 5-9 cells 9g 38*18*6
Skywalker-12AE 12A 15A Linear 5V/2A 5 servos 4 servos 2-3S 5-9 cells 10g 38*18*7
Skywalker-20A 20A 25A Linear 5V/2A 5 servos 4 servos 2-3S 5-9 cells 19g 42*25*8
Skywalker-30A 30A 40A Linear 5V/2A 5 servos 4 servos 2-3S 5-9 cells 37g 68*25*8
Skywalker-40A 40A 55A Linear 5V/3A 5 servos 4 servos 2-3S 5-9 cells 39g 68*25*8
Skywalker-40A-UBEC 40A 55A Switch 5V/3A 5 servos 5 servos 5 servos 2-4S 5-12 cells 43g 65*25*12
Skywalker-60A-UBEC 60A 80A Switch 5V/5A 8 servos 8 servos 6 servos 6 servos 2-6S 5-18 cells 63g 77*35*14
Skywalker-80A-UBEC 80A 100A Switch 5V/5A 8 servos 8 servos 6 servos 6 servos 2-6S 5-18 cells 82g 86*38*12
Programmable Items: (The option written in bold font is the default setting)
1. Brake Setting：Enabled / Disabled
2. Battery Type：Lipo / NiMH
3. Low Voltage Protection Mode(Cut-Off Mode)：Soft Cut-Off (Gradually reduce the output power) /Cut-Off (Immediately stop the
output power)
4. Low Voltage Protection Threshold(Cut-Off Threshold)：Low / Medium / High
1) For lithium battery, the battery cell number is calculated automatically. Low / medium / high cutoff voltage for each cell is:
2.85V/3.15V/3.3V. For example: For a 3S Lipo, when “Medium”cutoff threshold is set, the cut-off voltage will be:
3.15*3=9.45V
2) For NiMH battery, low / medium / high cutoff voltages are 0%/50%/65% of the startup voltage (i.e. the initial voltage of
battery pack), and 0% means the low voltage cut-off function is disabled. For example: For a 6 cells NiMH battery, fully
charged voltage is 1.44*6=8.64V, when “Medium” cut-off threshold is set, the cut-off voltage will be: 8.64*50%=4.32V。
5. Startup Mode：Normal /Soft /Super-Soft (300ms / 1.5s / 3s)
Normal mode is suitable for fixed-wing aircraft. Soft or Super-soft modes are suitable for helicopters. The initial acceleration of the
Soft and Super-Soft modes are slower, it takes 1.5 second for Soft startup or 3 seconds for Super-Soft startup from initial throttle
advance to full throttle. If the throttle is completely closed (throttle stick moved to bottom position) and opened again (throttle stick
moved to top position) within 3 seconds after the first startup, the re-startup will be temporarily changed to normal mode to get rid of
the chance of a crash caused by slow throttle response. This special design is suitable for aerobatic flight when quick throttle
response is needed.
6. Timing：Low / Medium / High,( 3.75°/15°/26.25°)
Usually, low timing is suitable for most motors. To get higher speed, High timing value can be chosen.
Begin To Use Your New ESC
IMPORTANT! Because different transmitter has different throttle range, please calibrate throttle range before flying.
Throttle range setting: (Throttle range should be reset whenever a new transmitter is being used)
Normal startup procedure:
Protection Function
1. Start up failure protection: If the motor fails to start within 2 seconds of throttle application, the ESC will cut-off the output power. In
this case, the throttle stick MUST be moved to the bottom again to restart the motor. (Such a situation happens in the following
cases: The connection between ESC and motor is not reliable, the propeller or the motor is blocked, the gearbox is damaged, etc.)
2. Over-heat protection: When the temperature of the ESC is over about 110 Celsius degrees,the ESC will reduce the output power.
3. Throttle signal loss protection: The ESC will reduce the output power if throttle signal is lost for 1 second, further loss for 2 seconds
will cause the output to be cut-off completely.
