User Manual
Contents
1. 2 cells or 3 cells and shows the battery capacity with 4 indicators LEDs 3 6 Shows the working status with an indicator LED lights when the output is in normal range 3 1 2 output leads to reduce the resistance when connecting the UEBC to the receiver 3 8 Accessory A step down voltage regulator with 0 7V down from 6 0V to 5 3V 4 Wiring Method l Input f Voltage Indicators 4LEDsJ Full Md Low Stop UBEC 8A MAX 15A INPUT 6V 12 6V 2 3 Lipo Lowest RF Noise 22 c Output Output Voltage changing Switch Output Indicator 5 Special Explanation 5 1 Although we have tried our best to reduce the electromagnetic interference caused by switch model UBEC it still may cause some interference to the receiver So please install the filter far away from the UBEC s main board and DON T stack the filter on the main board Please put the whole UBEC as far as possible away from the receiver 5 2 This UBEC is only designed for using lithium batter pack we don t recommend the use of NiMh NiCd battery pack 5 3 6 2 6 3 6 4 6 5 Doc Ver HW 06 080602 1 The input polarity must be correct otherwise the UBEC will be damaged Please check the polarity carefully before connecting the battery pack How to Use the UBEC Change the output voltage The voltage is chosen by an output voltage select switch Working status indicator LED The LED shows whether the output is normal or2. User Manual of 8A UBEC 8 Amps Switch Mode UBEC 1 Why do you need UBEC The 8A UBEC is a switch mode DC DC regulator supplied with a 2 3 cells lithium battery pack and outputs a consistent safe voltage for your receiver gyro and servos It is very suitable for nitro powered RC helicopter above 30 class and big fixed wing aircraft Compared with the linear mode UBEC the overall efficiency of the switch mode BEC is much higher so it can extend the working time of the receiver battery pack and because a switch mode UBEC can significantly reduce the heat emission it can avoid the loss of control caused by the over heat problem which is frequently happened with the linear mode UBEC 2 Specification 2 1 Output 5V 8A or 6V 8A Changeable with an output voltage select switch 2 2 Input 6V 12 6V 2 3 cells lithium battery pack 2 3 Size 42mm 39mm 9mm length width height 2 4 Weight 38g 2 5 Quiescent current 6 0mA 3 Features 3 1 Designed with an advanced switch mode DC DC regulator IC 3 2 The output current is very large the continuous output current is up to 8A and the burst output current is 15A 3 3 With the output short circuit protection function 3 4 A metal shield covers almost all the electronic components and a specially made filter ferrite ring is attached with the output wires to significantly reduce the electromagnetic interference 3 5 Automatically detects the number of the lithium battery pack
3. not It lights when the UBEC has the normal output If it doesn t light please check the battery connections Battery capacity indicators 4 LEDs LED Status The voltage of the lithium battery pack Full Mid Low Stop 2S battery pack 3S battery pack po lolo lO versa 11 70 12 6V fojo lo 7m7 s sgur ejejojo 672v 990108V oOo o Oo 54066V 6 6V O lt OOV O OE 4 LEDs flash 1 The voltage lt 5 4V 1 The voltage gt 13 5V at the same time 2 The voltage gt 13 5V One LED flashes for The voltage of the battery pack is just a short time at the critical edge of each range O means the LED lights means the LED does not light When you are using a 3 cells lithium battery pack if there is only one LED STOP lights that means the voltage is less than 9 9v please change the battery pack as soon as possible otherwise it will be damaged because of over discharging For such a fully discharged 3S battery pack if the voltage is less than 9V please don t use it again before it is recharged otherwise the UBEC may mistakenly consider this battery as 2 cells so the power capacity indication function will be confused Turn on or turn off the output Set the main switch to the ON position to turn on the output Set the main switch to the OFF position to turn off the output About the 0 7V step down voltage regulator Allowing use of Futaba servo models 9241 9251 9253 9254 9255 9256 and other digital
4. servos not capable of handling 6V This small device can change the voltage from 6V to 5 3V When the UBEC output is set to 6V the step down voltage regulator is useful Method Just connect the regulator inline between the Gyro and the rudder servo Or between the receiver and the servo that s OK If you are using a servo that can accept 6V input the regulator is not required
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