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ESC Classic 50A 

Electronic Speed 

Controller

     

       

 

Dear customer, 

Thanks for choosing LETON ESC (Electronic Speed Controller) for brushless motor. This is a user-friendly, easy to set 

up, new developed speed controller for both fix wing & Helicopter. We have produced this product to be of the highest 

quality, performance, and reliability at a “value-packed” price. We hope it provides you with hours of enjoyment. 

We strongly recommend you 

pay careful attention to the following instructions and warning

 before you start 

using LETON electronic speed controller. 

Best wishes 

 

Model: ESC Classic

 

50A

 

Connection Diagram:

 

 

 

Specifications: 

Application Fields:      fix wing & Helicopter 

Battery range:      

LI-XX = 2 ~ 4 cells; 

7

.2V ~

14.4

NI-XX = 5 ~ 12 cells; 6.0V ~ 1

4

.4

V

 

Working Current: 50A /60 A Surge 15S

  

PWM frequency: 8 KHz 

Maximum RPM: 2-pole motor / 210,000 rpm 

6-pole motor / 70,000 rpm   
12-pole motor / 35,000 rpm 

Protection:    OHP, Over Heat protection 

OVP, Over Voltage (battery) Protection 
LVP, Low Voltage Protection (soft cutoff) 

BEC Current: 

2

A

Max.

 

Ambient Temperature: 0

- 50

 

Weigh: 

40

 g 

Size: 45 x30 x 15 (mm) 

 
Features:

 

z

 

High rate 8 KHz    switching (PWM); Supported 

highest motor speed: 210000 RPM (2 poles), 70000 

RPM (6 poles), 35000 RPM (12 poles) 

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Dynamic braking ensures prompt prop folding.   

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Over Heat Protection.(OHP)   

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User easily Programmable ESC Features by our ESC 

Programming Card.   

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Low-voltage soft-cutoff protection, cause Throttle 

going slow down. 

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Battery range protection, when the voltage of the 

battery pack is lower/higher than the Battery range 

threshold, the alarm status is activated.   

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Brake/No Brake operation. Stop folding props cold 

— or let fixed props freewheel.   

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Safe “power on” arming program ensures motor will 

not accidentally turn on.   

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Low torque “soft start” prevents damage to fragile 

gearboxes.  

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Auto shut down in 2sec after when RX signal is lost 

or radio interference becomes severe.   

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Throttle Range can be auto setting during at first 

power on time. 

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ESC can make brushless motor play music when all 

the setting is ready to go. 

 
 
 

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