• BLHeli-S 30A 2-4S Programming Multishot ESC for FPV Race Drone Multicopter

BLHeli-S 30A 2-4S Programming Multishot ESC for FPV Race Drone Multicopter

Tags: BLHeli-S 30A 2-4S

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BLHeli-S 30A 2-4S Programming Multishot ESC for FPV Race Drone Multicopter







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Product Description:
- 1.BLHeli_S is designed for superior performance in multirotors,and uses hardware generated motor pwm for smooth throttle response and silent operation.
- 2.All codes use damped light mode.Damped light does regenerative braking,causing very fast motor retardation, and inherently also does active freewheeling.
- 3.The code supports features to prevent sync loss.There are tuneable parameters that can make the code run well even in the most demanding situations,although default settings will work excellently in normal operating environments.
- 4.The code supports regular 1-2ms pulse width input,as well as Oneshot125 (125-250us),Oneshot42 (41.7-83.3us) and Multshot(5- 25us).The input signal is automatically detected by the ESC upon power up.
The code also supports a beacon functionality, where the ESC will start beeping after a given time of zero throttle.This can be very useful for finding lost crafts.

BLHELI-S specification:

- Model:BLHELI-S 30A 2-4S
- Constant Current:30A
- Peak Current(10s):35A
- BEC:NO
- Lipo:2-4S
- Programming:YES
- PCB Size:28x13MM
- Weight:9.1g

Features:
- Chips on EFM8BB21F16,50MHZ Greatest
- BLHeli_S is designed for superior performance in multirotors,and uses hardware generated motor pwm for smooth throttle response and silent operation.
- Small size combined with light weight for easy installation.
- The code supports regular 1-2ms pulse width input,as well as Oneshot125 (125-250us),Oneshot42 (41.7-83.3us) and Multishot (5-25us).
The input signal is automatically detected by the ESC upon power up.
- All codes use damped light mode.Damped light does regenerative braking,causing very fast motor retardation, and inherently also does active freewheeling.
- The code supports features to prevent sync loss.There are tuneable parameters that can make the code run well even in the most demanding situations,although default settings will work excellently in normal operating environments.
- The code also supports a beacon functionality,where the ESC will start beeping after a given time of zero throttle.This can be very useful for finding lost crafts.

ESC Programming:


1. Startup Power:
It is always done with the direct startup method,which runs the motor using back emf detection from the very start.
In this mode power is given by the throttle used,but limited to a maximum level.This maximum level can be controlled with the startup power parameters. Beware that setting startup
Power too high can cause excessive loading on ESC or motor.

2.Temperature Protection:
Thermal protection can be enabled or disabled.
The ESC measures temperature within the MCU and limits motor power if the temperature is too high.Motor power is limited in four steps:
- If the temperature is above 1400C,motor power is limited to 75%.    
- If the temperature is above 1450C, motor power is limited to 50%.
- If the temperature is above 1500C,motor power is limited to 25%.    
- If the temperature is above 1550C, motor power is limited to 0%.

3.Low RPM Power Protect:
Power limiting for low RPMs can be enabled or disabled.Disabling it can be necessary in order to achieve full power on some low kV motors running on a low supply voltage.However,disabling it increases the risk of sync loss,with the possibility of toasting motor or ESC.

4. Motor Direction:
Rotation direction can be set to fwd/rev/bidirectional fwd/bidirectional rev.In bidirectional mode,center throttle is zero and above is fwd rotation and below is reverse rotation.
When bidirectional operation is selected,programming by TX is disabled.

5. Demag compensation:
Demag compensation is a feature to protect from motor stalls caused by long winding demagnetization time after commutation.The typical symptom is motor stop or stutter upon quick throttle increase,particularly when running at a low rpm. As mentioned above,setting high commutation timing normally helps, but at the cost of eciency.
Demag compensation is an alternative way of combating the issue. First of all, it detects when a demag situation occurs.
- In this situation,  there is no info on motor timing, and commutation proceeds blindly with a predicted timing.
- In addition to this, motor power is cut o some time before the next commutation.
A metric is calculated that indicates how severe the demag situation is.The more severe the situation,the more power is cut o.When demag compensation is set to o, power is never cut.When
setting it to low or high, power is cut. For a high setting, power is cut more aggressively.Generally, a higher value of the compensation parameter gives better protection.If demag compensation is
set too high, maximum power can be somewhat reduced.

6. Motor Timing:
Commutation timing can be set to low/mediumlow/medium/mediumhigh/high,that correspond to 00/7.50/150/22.50/300 timing advance.
Typically a medium setting will work,but if the motor stutters it can be benecial to change timing.Some motors with high inductance can have a very long commutation demagnetization time.This can result in motor stop or stutter upon quick throttle increase,particularly when running at a low rpm.Setting timing to high will allow more time for demagnetization,and often helps.

7.Brake On Stop:
Brake On Stop can be enabled or disabled.

Package List:
- 1 x 30A 2-4SMicro ESC

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