User Manual of Brushless Speed Controller
Trouble Shooting
Troubleshooting
Trouble
The ESC didn't work after it was
powered on while the motor kept
beeping.
The ESC didn't work after it was
powered on while the motor
kept beeping.
The ESC didn't work after it was
powered on while the motor kept
beeping.
The ESC didn't work after the
throttle calibration while the
motor kept beeping.
The ESC output suddenly
reduced to 50% during the flight,
the motor kept beeping after the
flight completed but the battery
was still connected to the ESC
The ESC output suddenly
reduced to 50% during the flight,
the motor kept beeping after the
flight completed but the battery
was still connected to the ESC
Multiple Protections
1. Start-up Protection:
The ESC will monitor the motor speed during the start-up process. When the speed stops increasing or the speed increase is not
stable, the ESC will take it as a start-up failure. At that time, if the throttle amount is less than 15%, the ESC will try to restart
automatically; if it is larger than 20%, you need to move the throttle stick back to the bottom position first and then restart the ESC.
(Possible causes of this problem: poor connection/ disconnection between the ESC and motor wires, propellers are blocked, etc.)
2. ESC Thermal Protection:
The ESC will gradually reduce the output but won't cut it off when the ESC temperature goes above 120℃. For ensuring the motor
can still get some power and won't cause crashes, so the maximum reduction is about 60% of the full power. (Here we are describ-
ing the ESC's reaction in soft cutoff mode, while if in hard cutoff mode; it will immediately cut off the power.)
3. Throttle Signal Loss Protection:
When the ESC detects loss of signal for over 0.25 second, it will cut off the output immediately to avoid an even greater loss which
may be caused by the continuous high-speed rotation of propellers or rotor blades. The ESC will resume the corresponding output
after normal signals are received.
4. Overload Protection:
The ESC will cut off the power/output or automatically restart itself when the load suddenly increases to a very high value. (Possible
cause to sudden load increase is that propellers are blocked.)
5. Low Voltage protection:
When the battery voltage is lower than the cutoff voltage set by the ESC, the ESC will trigger the low-voltage protection. If the
battery voltage is set to soft cutoff, the battery voltage will be reduced to a maximum of 60% of the full power. When set to hard
cutoff, the output is cutoff immediately. After the throttle returns to 0%, the ESC will drive the motor to sound the alarm.
6. Abnormal voltage input protection:
When the battery voltage is not within the input voltage range supported by the ESC, the ESC will trigger the Abnormal input
voltage protection, ESC will drive the motor to sound the alarm.
Warning Tones
The input voltage was beyond
"BB, BB, BB......"
the operating voltage range of
the ESC.
The ESC didn't receive any
"B-, B-, B-, B-......"
throttle signal from the receiver.
The throttle stick has not been
"B, B, B, B......"
moved to the bottom position.
The throttle range you set was
"B, B, B, B......"
too narrow.
The ESC thermal protection
"BB, BB, BB......"
has been activated
The low-voltage cutoff
"BBB, BBB, BBB......"
protection has been activated.
17
Causes
Adjust the power-on voltage and
ensure it's in the operating voltage
range of the ESC.
Check if the transmitter and
receiver are well bound, if any
poor connection exists between
the ESC and receiver.
Move the throttle stick to the
bottom position and calibrate the
throttle range.
Re-calibrate the throttle range.
Improve the heat dissipating
condition (i.e. add a cooling fan)
or reduce the ESC load.
Change another pack; lower down
the cutoff voltage or disable the
LVC protection (we do not
recommend this).
Solutions