Lithium Polymer (Li-poly) & Ni-Mh battery packs, battery chargers, Electric (Brushless) Motors, Electric Speed Controllers ( ESC ), Gyros, Electric Accessories etc.
This is the Towerpro 18A ESC, it is one of the most popular ESC since 2-3 years ago.
*Excelent compatibility, compatible with most of brushless motors available on market.
*High reliable in quality.
*For electric airplane.
*Input Voltage : 7.4V/11.1V (2/3 cells Li-Poly).
Wiring:
1.2/3 Li-poly switch: 2-pin jumper in:2-cell Li-Poly cutoff
2-pin jumper out: supports 3-cell Li-Poly cutoff
2. Connection of Brushless Motors: Just swap any of the two wires to reverse the motor direction.
3.Consistent current is 15A.
4.Maximum current is 18A which should not last over 5 seconds.
5.Wrong polarity of power pack may result in severe damage.
Menu:
Always use new connectors. We do not recommend using any other type of connector.It is possible to extend the cables to the main power pack up to a maximum of 20 cm.
The speed controller is connected to the motor with G3.5 connectors. The opposing connector halves are supplied with the speed controller and must be soldered to the motor cables. It is recommended to solder the cables directly to the power pack terminals if at all possible.
Plug the JR connector into the receiver throttle channel.
The basic technical details of these speed controllers are:
Note: When using economical class micro servos, it is necessary to reduce the number of servos by one.
Installing into the model:
Attach the motor to the motor mount with the screws provided.
Adjust the screw engagement length (place washers under the head) to be long enough to attach the motor but without threads protruding inside. When you use screws that protrude inside the motor you are likely to damage it.
Mount the speed controller in the model so that it is isolated from vibration and shock. Allow space around it for cooling. Make sure that there is sufficient cooling of the motor and speed controller by the ducting air through adequate cooling holes from the outside airflow.
Main power packs should be connected at one attempt. Avoid multiple touches of the connectors.
Switch on the transmitter and check the throttle channel settings are +/-100% (for computer radios.)
Switch on the speed controller .For speed controllers without BEC, switch on the power to receiver .
You must hear a beep. Between switching on the switch and the beep the throttle stick must not be moved .If you do not hear a beep, switch off the switch, disconnect the power connectors, wait for 5 seconds and repeat the procedure of connecting and switching on .If you do not hear beep again ,check the following:
- Is JR connector plugged in throttle channel?
- Is the throttle stick in closed position(OFF)?
- Is the throttle channel in normal position & not reversed?
The position of full throttle will be adjusted automatically.
***Warning :Once the Main Drive Pack is connected, handle the model with extreme care Ensure that you are well clear of the propeller at all times. Rotating propellers are extremely dangerous!
Connect the main power pack just before flight and disconnect it immediately after landing.
Warning: When the switch is off, it does not mean the main power pack is disconnected also!
**The speed controller is supplied with the brake activated .If you want to turn off the brake, do the following:
- Switch on the transmitter and move the stick to full throttle.
- Connect the main power pack and turn on the receiver switch (if used).
- Wait 5 seconds.
- After 5 seconds you will hear 4 tones.
- Move the throttle stick fast to the closed position, you will hear two beeps.
- The brake is now turned off.
The brake setting is memorized, that means it will not change after disconnecting the main power pack. When turning on the speed controller with the brake active, you will always hear one beep. When the brake is turned off you will hear a double beep. If you want to activate the brake again, repeat the procedure.
Reversing the motor direction is achieved by the exchanging the position of any two wires connected to the motor.
The speed controller will turn-off the motor when the main power pack voltage falls under 5,5 V or reaches 2.75V/ cell.It depends on which occurs first. Temperature overload protection is built into the speed controller, it turns off the motor when the temperature reaches 110 centigrade .These speed controllers are equipped with protection functions that take care of correct start and operation of the motor across the whole range of revolutions and current.
Do Not connect the speed controller to just any kind of power source. Take care to ensure the right polarity of Li-Poly power packs. When using the wrong polarity, the speed controller will be severely damaged.
The cut-off voltage of 2.75/cell in the manual is set for "under load" and the cut-off of the voltage monitoring element in the circuit, it is equal to 3.0-3.1V cut-off voltage for the battery because there is a voltage drop both between the wires of the battery and the circuit board. and typically the voltage has dropped at least 1 volt while you are flying, usually 2 denpending on the resistance of the whole circuit, the discharging current and the inner resistance of the battery as well. As soon as the load is shutoff, the voltage jumps back up. So, with an 2.75 volt cutoff (voltage monitoring element) , your cells will still be above 3 volts each cell which is safe.
20th Nov., 2005
Electric 
