30A BLDC ESC Product Manual 2012 06 08
User Manual:
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30A ESC
30A BLDC ESC
Introduction
This is fully programmable 30A BLDC ESC with 5V, 3A BEC. Can drive motors with
continuous 30Amp load current. It has sturdy construction with 2 separate PCBs for
Controller and ESC power MOSFETs. It can be powered with 2-4 lithium Polymer batteries
or 5-12 NiMH / NiCd batteries. It has separate voltage regulator for the microcontroller for
providing good anti-jamming capability. It is most suitable for UAVs, Aircrafts and
Helicopters.
Specifications
NiCd
• BEC: 5V, 3Amp for external receiver and servos
• Max Speed: 2 Pole: 210,000rpm; 6 Pole: 70,000rpm; 12 Pole: 35,000rpm
• Weight: 32gms
• Size: 55mm x 26mm x 13mm
Features:
• High quality MOSFETs for BLDC motor drive
• High performance microcontroller for best compatibility with all types of motors at
greater efficiency
• Fully programmable with any standard RC remote control
• Heat sink with high performance heat transmission membrane for better thermal
management
• 3 start modes: Normal / Soft / Super-Soft, compatible with fixed wing aircrafts and
helicopters
• Throttle range can be configured to be compatible with any remote control available
in the market
Figure 1: 30A BLDC ESC
• Output: 30A continuous; 40Amps for 10 seconds
• Input voltage: 2-4 cells Lithium Polymer / Lithium Ion battery or 5-12 cells NiMH /
30A ESC
• Smooth, Linear and Precise throttle response
• Low-Voltage cut-off protection
• Over-heat protection
• Separate voltage regulator IC for the microcontroller to provide anti-jamming
capability
• Supported Motor Speed (Maximum): 210000RPM (2 poles), 70000RPM (6poles),
35000RPM (12 poles)
Package contains: One 30A BLDC Motor
Warning:
In case the BLDC ESC is connected directly to the remote control receiver, never ever switch
off the remote control before switching off power to the BLDC ESC. Depending on the
model of the remote control, it may result in full throttle applied to the motor and it will
rotate at full speed.
Connections:
BLDC ESC has three Blue wires coming out from the one end which are to be connected to
the BLDC motor. On the other end, it has red and black wires which are to be connected to
the battery. It also has a 3 pin servo connector which is used for receiving the throttle
command and for giving out regulated 5V, 3Amp supply for the remote receiver and the
servo motors.
Connection type Wire Colour Function
Power Red 7.4 to 14.8V
Black Ground
BLDC Motor Connections Three Blue Wires BLDC ESC connections
Servo Connector White Throttle Input
Red 5V, 2Amp Out
Black Ground
Table 1: BLDC ESC Connections
Control Signal:
30A BLDC ESC requires standard 50-60Hz PWM signal from any remote control as throttle
input. You can also generate similar input signal from the microcontroller for making your
own customized flying platform. Throttle speed is proportional to the width of the pulse.
Maximum throttle position is user programmable. In general throttle is set at zero for 1mS
pulse width and full at the 2mS pulse width.
Notes:
Different brands of remote controls use slightly different signal range. Say 0.5ms to 2.5ms at
50 to 60Hz instead of 1ms to 2ms at 60Hz. You can program the throttle of the BLDC ESC
corresponding to the new remote control. For more information on this, refer to section
Throttle Range Setting.
30A ESC
In all the subsequent text, you will encounter sentences like “ESC will emit special tone like
“123”. For information regarding these tones refer to subsection 2 of the ESC Programming
and Table 2.
Interfacing BLDC ESC with the remote control
1. Connect BLDC ESC with the BLDC motor
2. Move remote’s throttle stick to zero and switch on the transmitter
3. Connect the battery pack to the BLDC ESC. It will begin self test process and emit
special tone “123” which means battery pack voltage is in normal range. After this it
will emit number of Beeps corresponding to the number of batteries in the battery
pack. Finally, a long Beep will appear which means that now it is ready to fly.
Important:
Instead of tone sequence as mentioned in the section 3 if you hear special tones like “56712”
after 2 Beep tones, it means that ESC has entered in the program mode and your remote’s
throttle is in full instead of zero. In this case switch off the ESC, move throttle to the
opposite direction (correct zero throttle position for the remote control) and repeat steps 1, 2
and 3.
If you hear rapid Beep-Beep tones then it means that supply voltage is too low or too high.
Check your battery’s voltage. You can also refer to the Troubleshooting section.
Throttle Range Setting
Different remote controls have servo control signals in different ranges. They can be in the
range of 1mS to 2mS or 0.5mS to 2.5mS at 50 to 60Hz. Whenever you connect this ESC to a
new remote control or microcontroller then you need to teach the ESC about the control
signal range corresponding to the zero and full throttle. To do this, follow these instructions.
1. Switch on the transmitter and move throttle position to the maximum.
2. Connect the battery to the ESC. (BLDC motor should be connected to the ESC) ESC
will do the self test. Emit special tone like “123”. After this it will emit number of
Beeps corresponding to number of batteries in your battery pack.
3. Wait for 2 more seconds. ESC will emit Beep twice which means ESC has latched the
maximum throttle position.
4. Now within next 5 seconds move throttle stick to zero position and wait for 1 second.
ESC will emit a long Beep indicating that it has latched the zero position of the
throttle.
This throttle setting is permanently recorded in the ESC. Always change this setting when
you are using new remote control.
As mention in the step 4 if you don’t move throttle to zero position within 5 seconds, then
ESC will enter in the programming mode. If this happens then switch off the ESC and remote
control and repeat steps 1 to 4.
30A ESC
Alert Tones:
Abnormal Input Voltage
ESC checks for the battery voltage at the start-up. If the battery voltage is not in the
acceptable range then ESC starts giving alert signal such as Beep-Beep with the interval of 1
second.
Abnormal throttle signal:
When ESC does not detect throttle signal or it detects abnormality in the throttle signal then it
gives Beep sound with the interval of 1 second.
Throttle stick is not in the zero position:
When throttle stick is not in the zero position at start-up then it will give rapid Beeps with the
intervals of 0.25 seconds.
Protection Functions:
Abnormal Start Protection:
If motor fails to start within 2 seconds of throttle application then ESC will cut-off the output
power. Throttle stick should be brought to zero position again to resume operations.
Such case may arise if connection between ESC and motor is not reliable, propeller or motor
is blocked or gearbox (if installed) is damaged etc.
Over Temperature Protection:
If ESC gets heated above 1100C then it reduces the output power.
Throttle signal loss protection:
ESC will reduce the output power to the motor if throttle signal is lost for 1 second. If signal
is lost for further 2 seconds then it will kill the throttle and stop the motor.
30A ESC
Programmable Settings
1. Brake Setting:
Enabled / Disabled (Default is disabled)
2. Battery type:
Li-ion / Li-poly or NiMh / NiCd (Default is Li-ion / Li-poly)
3. Low voltage protection mode (Cut-off Mode):
Soft Cut-off (Gradually reduce the output power) / Hard Cut-off (Immediately stop
the output power) (Default is Soft Cut-off)
4. Low Voltage Protection Threshold:
Low / Medium / High (default is medium)
A. Lithium batteries:
Number of batteries is calculated automatically. Low / Medium / High cut-off
level per cell of the battery pack is 2.6V / 2.85V / 3.1V respectively. To get
cut-off value for the battery pack, multiply this value with the number of cells
in the battery pack.
B. Nickel based Batteries:
Low / Medium / High cut-off voltages are 0% / 45% / 60% of the start-up
voltage. Start-up voltage is the initial voltage of the battery pack. 0% means
voltage cut-off is disabled.
5. Start-up Mode:
Normal / Soft / Super Soft (Default is normal)
Normal mode is preferred for the fixed wing aircrafts or small UAVs. The initial
acceleration of the Soft and Super Soft modes are slower in comparison. Usually it
takes 1 second for Soft start-up or 2 seconds for Super Soft start-up from initial
throttle advance to full throttle. If throttle is set to 0 and moved to full throttle again
within 3 seconds of the initial start-up, then restart-up will be temporarily changed to
normal mode to get rid of chances of a crash caused by slow throttle response. This
special design is very suitable for aerobatic flight where quick throttle response is
needed.
6. Timing:
Low / Medium / High (Default is Low)
Usually, low timing value can be used for the most of the motors. We recommend low
timing value for 2 poles motor and medium timing value for motors with more than 6
poles to get high efficiency. For higher speed, high timing value can be chosen.
Note:
High KV outrunner BLDC motors have large space between magnet and many BLDC ESCs
can’t drive these motors. This ESC is capable of driving these motors. For high KV motors it
is recommended to have high or medium timing.
30A ESC
ESC Programming:
1. Entering programming mode
A. Switch on Transmitter, Move throttle to full, Connect battery to the ESC
B. Wait for 2 seconds. ESC will emit tone like “Beep-Beep”
C. Wait for another 5 seconds, ESC will emit tone “56712”. Now ESC is entered
in the programming mode.
2. Select programmable items
BLDC ESC emits different types of tones to communicate with you when BLDC motor is
connected to it. It actually uses BLDC motor to generate these tones. Table below lists
these tones. We will identify these tones by number allocated to them as mentioned in the
table below. In the below table “Beep” stands for the short tone. “Beeeep” stands for the
long tone. Here One long “Beeeep” = 5 short “Beep”
Right most column in the table shows the function which is valid only for this step 2.
Number and tone corresponding to it is used in this product manual.
Number Tone Function in Program mode
1 Beep Brake
2 Beep-Beep Battery Type
3 Beep-Beep-Beep Cut-off mode
4 Beep-Beep-Beep-Beep Cut-off Threshold
5 Beeeep- Start-up mode
6 Beeeep-Beep Timing
7 Beeeep-Beep-Beep Set all functions to factory defaults
8 Beeeep-Beeeep Exit
Table 2: Special tones
After entering in the programming mode as mentioned in step 1 you will here these 8
sequences with the interval of 3 seconds. After hearing tone of your interest move throttle
to zero to enter in particular item’s setting type. Follow step 3 to change the setting in the
particular item.
3. Set Item Value (programmable value)
Now you will hear several tones in loop. Set the value matching to the tone by moving
throttle stick to full position. If new setting is saved successfully then you will hear
special tone “1515” which indicates that value is successfully set and saved.
Now if you still keep the throttle stick to top then you will be reverted back to step 2 to go
to other items. Moving throttle stick to the zero within 2 seconds will result in program
mode exit.
Items Tones Beep Beep-Beep Beep-Beep-Beep
Brake Off On N.A.
Battery Type Li-ion / Li-poly NiMh / NiCd N.A.
Cut-off Mode Soft-cut Cut-off N.A.
Cut-off Threshold Low Medium High
Start Mode Normal Soft Super Soft
Timing Low Medium High
Table 3: Item settings
30A ESC
4. Exiting the Program Mode
There are 2 ways to exit program modes
A. In step 3 after hearing special tone “1515”move throttle stick to zero position
with in 2 seconds.
B. In step 2 after hearing tone Beeeep-Beeeep (Item no. 8) move throttle stick to
bottom within 8 seconds.
Program Example
Setting the “Start” mode to “Super Soft” setting
1. Enter Program mode:
Switch on Transmitter, Move throttle stick to full position, connect battery to the
BLDC ESC, wait for 2 seconds, “Beep-Beep’ sound will be emitted. Now wait again
for 5 seconds, special tone “56712” should be emitted, which means you have entered
program mode.
2. Select Programmable Items:
Now you will here 8 tones in loop as mentioned in the Table 2. At Item 5 (Start Mode),
tone corresponding to long Beeeep will be heard. Now move throttle stick to zero to
enter in the “Start Mode”.
3. Set Item vale (Programmable value):
Refer to the Table 3. You will hear Beep followed by 3 seconds delay, Beep-Beep
followed by 3 seconds delay and Beep-Beep-Beep. After hearing Beep for 3 times
move throttle position to full. Now special tone like “1515” will be emitted. Now in the
Start Mode, Super Soft Mode is set.
4. Exit Program Mode:
After the special tone “1515” move throttle stick to zero within 2 seconds. Or follow
step 4 as mentioned in the section 4 of the ESC Programming
30A ESC
Trouble Shooting
Sr.
No. Problem Possible Reason Action
1. After power on, motor does not
work, no sound is emitted The connection between
battery and ESC is not correct Check the power connection,
Replace the connector
2.
After power on, motor does not
work. Beep-Beep alert tone is
emitted with the time interval of
1 second
Abnormal input voltage.
It is too high or too low. Check the voltage of the
battery pack.
3. After power on, motor does not
work; Beep tone with the
interval of 2 second is emitted. Throttle signal is abnormal
Check the receiver and the
transmitter
Check the cable to the throttle
channel
4.
After power on, motor does not
work; fast Beep tones with the
interval of 0.25 seconds are
emitted.
Throttle stick is not in the zero
position. Move the throttle stick to the
bottom position
5.
After power on, motor does not
work; a special tone “56712” is
emitted after two Beep-Beep
tones.
Direction of the throttle
channel is reversed. Hence
throttle is in full position
instead of zero position and
hence ESC has entered in the
programming mode.
Switch off the ESC.
Set the throttle condition to the
correct direction.
Restart the ESC
6. Motor runs in the opposite
direction
Connection between ESC and
the BLDC motor needs to be
changed
Swap any two wires between
motor and the ESC to reverse
the direction
Throttle signal is lost
Check the receiver and the
transmitter
Check the cable of the throttle
channel
ESC has entered in the low
voltage protection mode Replace the battery as soon as
possible
7. Motor stops working while
running
Some connections are not
reliable
Check all the connections:
Battery pack connection,
Throttle signal cable, motor
connections etc.
8. Random stop or restart or
irregular working state There is strong electromagnetic
interference in the field.
Reset the ESC to resume
normal operation. If issue is
not resolved then check the
radio link, your system,
shielding etc.
Table 4: Trouble Shooting
Interfacing BLDC ESC with a microcontroller:
Connect signal of the BLDC ESC to the microcontroller. Make sure that you make the
ground common between microcontroller board and the BLDC ESC. You can also set the
throttle range as mentioned in the section Throttle Range Setting. Now you are ready to drive
BLDC motor using this BLDC ESC with microcontroller.
30A ESC
Notice
Product’s electronics is static sensitive. Use the product in static free environment.
Read the user manuals completely before start using this product
Recycling:
Almost all the part of this product is recyclable. Please send this product to the recycling plant after its
operational life. By recycling we can contribute to cleaner and healthier environment for the future generations.
The contents of this manual are subject to change without notice. All efforts have been made to
ensure the accuracy of contents in this manual.
