E-flite Ascent 450 Brushless PNP Speed Control User Manual
Page 2
Changing Programming for Motor Direction
NOTE: This can also be done by simply unplugging any two wires and switching and re-connecting.
1.
Unplug the battery supplied to the ESC.
2.
Move the throttle stick up to FULL throttle (highest point).
3.
Connect the battery supplied to the ESC again.
4.
Move the throttle stick down to OFF throttle (lowest point) position. You will then here one low/high tone.
5.
Move the throttle stick up to FULL throttle (highest point). You will hear two low/high tones.
6.
Next, move the throttle stick to the position you like. When you hear two low/high tones, then the direction should now be changed.
Over-Current Protection
When the prop is locked or jammed and the motor stops running, the ESC will stop power to the motor immediately, so the motor can be protected
from damage due to over-current.
Low Voltage Warning Function
When the voltage of the battery drops below 9V, the ESC will reduce power (drop rpms) to the motor until the voltage is back above 9V. This will
usually occur several times, but we suggest you land immediately before experiencing a significant loss of power while you have enough reserve
power to land the plane.
Limited Warranty Period
Horizon Hobby, Inc. guarantees this product to be free from defects in both material and workmanship for a period of 1 year from the date of
purchase.
For specific information concerning the Limited Warranty, Limits of Liability, and Safety Precautions – please consult the airplane manual.
BL450 890KV Outrunner Motor (EFLM7220)
Specifications
Kv: 890 (rpm/v)
Io: 1.39A @ 8V (no load current)
Ri: .10 ohms (resistance)
Continuous Current: 14A
Max Burst Current: 20A
Cells: 6-10 Ni-MH/Ni-Cd or 2-3S Li-Po
Recommended Props: 9x6 to 11x3.8 ‘Slow Flyer’ or 10x5 to 12x6 ‘Electric’
Brushless ESC: 20-22 Amp
Diameter: 28mm (1.1 in)
Case Length: 34mm (1.35 in)
Weight: 70g (2.5 oz)
Shaft Diameter: 4mm (.16 in)
* Maximum Operating Temperature: 220 degrees Fahrenheit
* Adequate cooling is required for all motor operation at maximum current levels.
* Maximum Burst Current duration is 15 seconds. Adequate time between maximum burst intervals is required for proper cooling and to avoid
overheating the motor.
* Maximum Burst Current rating is for 3D and limited motor run flights. Lack of proper throttle management may result in damage to the motor
since excessive use of burst current may overheat the motor.
Operating Instructions
1.
This brushless motor requires the use of a sensorless brushless speed control. Failure to use the correct speed control may result in damage
to the motor and/or speed control.
2.
When mounting the motor, be sure the correct length of screws are used so damage to the inside of the motor will not occur. We suggest
you use the mounting hardware included with your motor. The use of long screws will damage the motor.
3.
You may connect the three motor wires directly to the controller. The ESC has gold plated brushless bullet connectors (EFLA241)
installed
4.
If you add connectors and you no longer wish to use them, never cut the motor wires. Remove them by properly desoldering them.
Shortening the motor wires is considered an improper modification of the motor and may cause the motor to fail.
5.
When you connect the motor to the esc, check the rotation direction of the motor. If you find the rotation is reversed, switching any two
motor wires will reverse the direction so the motor rotates properly.
6.
Proper cooling of the motor is very important during operation. New technology has brought much higher capacity batteries with higher
discharge rates, which can cause extreme motor temperatures during operation. It is the responsibility of the user to monitor the
temperature and prevent overheating. Overheating of the motor is not covered under any warranty.
7.
You can install the propeller on the motor shaft after you have confirmed proper rotation direction.
8.
Once the battery is connected to the motor, please use extreme caution. Stay clear of the rotating propeller since spinning propellers are
very dangerous as the motors produce high amounts of torque.
9.
Never disassemble the motor. This will void any warranty.
Made in China
© 2008 Horizon Hobby, Inc.
www.E-fliteRC.com
E-flite® is an exclusive brand of Horizon Hobby, Inc.