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USER MANUAL

1. LRP electronic GmbH 2008 BRUSHLESS SENSORLESS DESIGN MICRO CAR SPECIALIST RA00239 ORDER NO 86500 LRP electronic GmbH Wilhelm Enssle Str 132 134 73630 Remshalden Germany info LRP cc www LRP cc 1 CONNECTIONS BAT Red Button LED s Motor Connection BAT Black Power Capacitor Receiverwire On Off Switch RX SWITCH HARNESS This LRP speed control is equipped with the new RX Switch Harness for maximum convienence The regular LRP Multicon receiver wire is used and will easily fit in all ordinary receivers Install the On Off micro switch using supplied doublesided tape POWER WIRES 1 5mm power wires without any attached connectors are used There are G3 5 gold connectors included which allow convienent installation with brushless motors such as the Vector Micro 370 The unique solder posts allow easy and convenient replacement of the power wires Nevertheless some solde ring skills are required Avoid soldering longer then 5sec per soldering joint to prevent possible damage to the speed control due to overheating of the components 2 INSTALLATION The Nexxt 4X is supplied with 1 5mm power wires without attached connectors There are G3 5 gold connec tors included which allow convienent installation with brushless motors such as the Vector Micro 370 Be careful with the correct wire sequence colors since an incorrect connection may damage the speed contro Isolate all connections carefull
2. Operation e Micro Car Specialist e Sensorless Design e Small size and lighweight e 8 ADPC Power Profiles e AutoCell System NiMH 4 9 LiPo 2S 3S e Internal Temp Check System 2 e IceDrive Design e Multi Protection System e Waterproof Please read the following instructions carefully before you start using your LRP Nexxt 4X speed control This user guide contains important notes for the safety the use and the maintenance of this product Thus protecting yourself and avoid damages of the product Proceed according to the user guide in order to understand your LRP Nexxt 4X speed control better Please take your time as you will have much more joy with your product if you know it exactly This user manual shall be kept ina safe place If another customer is using this product this manual has to be handed out together with it 4 SPECIFICATIONS Brushless Brushed Sensorless Brushless System Forward Brake Forward Brake Reverse Case Size Weight excl wires Voltage Input BRUSHLESS __ BRUSHED Typ Voltage Drop 20A Rated Current 4 adjustable Modes ye Rec Motor Limit 370 380 size AutoCell Motor Drive Settings yes Rec Motor Limit 540 size ADPC Powerprofiles Autobrake Transistors rating at 25 C junction temperature Specifications subject to change without notice 5 RADIO SPEED CONTROL SET UP In setup mode the Nexxt 4X stores radio calibrations after completed procedure all the settings will be store
3. ady The higher the number of flashes the hotter the speedo ran and every flash equals to 5 C temperature decrease 10 MODE 1 AutoCell System we recommend using value 2 for 4 6 cells NiMH racing purposes which disengages the LiPo protection With value 1 the Nexxt 4X automatically detects if a 2S or 3S LiPo is connected and adjusts cut off accordingly onos oat LiPo NiMH 4 6cell NiMH foc Mod MODE 2 Motor amp Drive Selection the Nexxt 4X allows you to select from two different drive modes with or without reverse and select between brushless and brushed motor operation Forward Brake Reverse Forward Brake Forward Brake Reverse Forward Brake Brushless Brushless Brushed Brushed MODE 3 ADPC Power Profiles allows you to adjust the Nexxt 4X to your likes Either you run on mild or powerful motors or on slippery or high traction surfaces we have incorporated a profile for you Higher value means more overall power and more aggressive throttle response All settings are available for brushless and brushed motors LeftLED s 1 2 3 4 Yellow Red smooth smooth smooth smooth linear linear progressive aggressive alternate Power 1X Power 2X Power 3X Power 4X Power 4X Power 5X Power 5X Power 6X MODE 4 Automatic Brake allows you to set a slight braking action which is applied in the neutral range This enables you to simulate the feel of a brushed motor and also hold the throttl
4. apacitor using the supplied thick black doubled sided tape The aerial should be run vertically up and away from the receiver Avoid contact with any parts made of car bon fibre or metal If the aerial is too long don t coil up the excess length See also the instructions supplied with your radio control system Because of the physical principles of brushless technology the speed controls do get a little hotter than brushed systems Therefore it is required to let the speed control cool down completely after every run Sensorless brushless motors do not have a designated rotating direction and work identically in both direc tions If the motor rotates the wrong way for your model after you have wired up the three phase wires then you can simply change motor rotation direction by swapping two of the three phase wires e g SpeedoA goes to MotorB and SpeedoB goes to MotorA The crossed out wheeled bin means that within the European Union the product must be taken to seperate collection at the product end of life Do not dispose of these products as unsorted municipal waste Dear Customer thank you for your trust in this LRP product By purchasing the LRP NEXXT 4X speed control you have chosen one of the most advanced sensorless brushless speed controls of today The Nexxt 4X with all of its high tech features and specially selected electronic components is one of the best speed controls currently available e Brushless and Brushed
5. d in the speed controls memory even if the speed control will be disconnected from the battery TRANSMITTER SETTINGS Setup the following basic functions on your transmitter if available Description other names in radio Required Setting If your transmitter doesn t offer any of above functions it s already in basic setup mode e Ensure that the speed control is not connected to the drive battery and is switched off e Remove motor pinion or ensure that the wheels of the model are free to rotate e Switch the transmitter on and set the transmitter throttle stick to neutral e Connect the speed control to the battery switch in OFF position e Hold the button pressed and turn the switch on gt You entered setup mode and the blue LED flashes it will flash until the setup is completed e Leave transmitter in neutral position and press the button once gt Neutral setting is stored yellow blue LED flashes and the motor beeps e Hold full throttle on transmitter and press the button once gt Full throttle setting is stored red blue LED flashes e Hold full brake on transmitter and press the button once gt Brake setting is stored red and blue LED s glow This completes the setup procedure stores all settings and your Nexxt 4X is ready to use If you make a mistake during the setup procedure don t worry Disconnect the battery for about 10sec and start again from the first step At the end of each run s
6. e on longer when entering a turn For brushless motors you achieve the same natural slowdown as a brushed motor with no autobrake when you set value 1 2 LeftLeD s 0 i 2 3 4 5 6 7 8 Yellow Red none Going from lowest to highest automatic brake setting same time value 1 minimum value maximum REPAIR PROCEDURES LIMITED WARRANTY All products from LRP electronic GmbH hereinafter called LRP are manufactured according to the highest quality standards LRP guarantees this product to be free from defects in materials or workmanship for 90 days non european countris only from the original date of purchase verified by sales receipt This limited warranty doesn t cover defects which are a result of misuse improper maintenance outside interference or mechanical damage This applies among other things on e Cut off original power plug or not using reverse polarity protected plugs Receiver wire and or switch wire damaged Mechanical damage of the case Mechanical damage of electronical components PCB Soldered on the PCB except on solder posts Connected speed control with reversed polarity To eliminate all other possibilities or improper handling first check all other components in your model and the trouble shooting guide if available before you send in this product for repair If products are sent in for repair which do operate perfectly we have to charge a service fee according to our pric
7. elist With sending in this product the customer has to advise LRP if the product should be repaired in either case If there is neither a warranty nor guarantee claim the inspection of the product and the repairs if necessary in either case will be charged with a fee at the customers expense according to our price list A proof of purchase including date of purchase needs to be included Otherwise no warranty can be granted For quick repair and return service add your address and detailed description of the malfunction If LRP no longer manufactures a returned defective product and we are unable to service it we shall provide you with a product that has at least the same value from one of the successor series The specifications like weight size and others should be seen as guide values Due to ongoing technical impro vements which are done in the interest of the product LRP does not take any responsibility for the accuracy of these specs LRP Distributor Service Package your product carefully and include sales receipt and detailed description of malfunction Send parcel to your national LRP distributor Distributor repairs or exchanges the product Shipment back to you usually by COD cash on delivery but this is subject to your national LRP distributor s general policy The Nexxt 4X features 4 modes which enable you to adjust it to YOUR special requirements The factory settings 8 SPECIAL FEATURES Sensorl
8. ess Brushless Design Revolutionary LRP software providing sensored driveability even without hall sensors A quantum leap in sensorless brushless technology ADPC Power Profiles Advanced Digital Phase Control results in more power and better driveability Depending on the status of the car start acceleration full speed the software calculates the perfect motor management by adjusting current limiter motor timing throttle curve and more Higher value means more overall power and aggressive response D E M S Brushed Power Profiles The known and world s winning D E M S Brushed Quantum style power programs have been implemented into the LRP Nexxt 4X aswell Higher value means more overall power and aggressive response Internal Temp Check System 2 the Nexxt 4X allows you to read out the maximum internal temperature that the speedo reached To store it to the memory briefly apply brakes after the run before you turn the switch off You can convienently read out the temperature back in the pits since it remains stored until you turn it on the next time regularly which will reset the memory This new feature allows you to accurately check if all is running well or if you re close to shutdown already The higher the number of flashes the hotter the speedo ran Thermal shutdown would occur at 10 flashes DirectAccess Function For maximum convienence we have incorporated a quick DirectAccess function which allows you to jump straight to
9. n section 7 Mode Programming Power Capacitor Never disconnect the power capacitor It offers increased punch and additional protec tion it must be connected to BAT and BAT solder posts with shortest possible wires IceDrive Design LRP s secret IceDrive Design results in lower speedo temperature under all racing con ditions and for both brushless brushed Sorry no further details to be disclosed Simply a step ahead of the competition Fail Safe System Digital protection against radio interference The guardian angel The safety electronic can detect reception of a false or incomplete radio signal e g due to a low transmitter battery or environ mental radio interference which reach the model or if the model is out of the transmitter range For protection against damage the speed control switches to the neutral position and the model comes to a stop Multi Protection System 3 way protection The perfect protection against short circuits motor overload and overheating If your speed control faces overload the motor function will be shut off for protec tion and the blue LED will flash although the steering function is maintained Let the speed control cool down for a few minutes If you experience frequent shutdowns check for the following e Correct gear ratio refer to motor manual for gearing recommendations e ADPC setting too high higher value will heat up motor and speed control excessively e Motor is
10. rs crystals too low servo problem Poor battery connection Check plugs and connecting wires Transmitter batteries empty Replace recharge transmitter batteries Speed control defective Insufficient performance E g poor brake power topspeed or acceleration Motor pinion too big or gear ratio too long Transmitter settings changed after set up
11. step gt this is done automatic the values will be shown 3 times before it jumps to the next Mode The jump to the next mode is indicated by all 3 LED s flickering twice quickly gt simply turn off speedo anytime the most recent values you had choosen will be stored e How to know in which mode you are e How to check the stored values e How to change the value e How to get to the next mode e How to leave the programming mode e Table of settings values and modes see below grey shaded values show default settings DirectAccess Function For maximum convienence we have incorporated the new DirectAccess func tion which allows you to jump straight to the mode you would like to change without having to go the long way through all the other mode s e with speedo turned on press button and keep pressed do not release after 3sec e speedo scrolls through the mode s and they are indicated by the LED flashing sequence of the left LED s blue LED will not flash e if you have reached the mode you would like to change as indicated by left LED s release button The DirectAccess works if you start from the beginning of all mode s but it also works to jump from Mode 1 straight to Mode 3 for example simply keep button pressed to activate DirectAccess again MODE O Internal Temp Check System 2 This new feature allows you to accurately check if all is running well or if you re close to shutdown alre
12. the mode you would like to change without having to go the long way through all the other mode s See section 7 Mode Programming on how to use the DirectAccess function Brake Adjustment A good starting point for the brake setting on your radio is 80 for all classes Make sure you do the radio setup with all settings on the radio on 100 AutoCell System Ready for the next battery technology LiPo batteries LRP s exclusive and smart Auto Cell System ensures that LiPo batteries can be used safely without accidentially deep discharging of the cells Motor power will be reduced no shutdown will occur if the system recognises very low battery voltage It is self adjusting to 2S or 3S LiPo batteries Waterproof Due to latest production technologies and use of HighTech materials it was possible to make these speed controls fully waterproof This material also makes the speed controls more shock resistant then other similar products It s no longer needed to seal your speed control when you are driving in the rain snow But please make sure you still seal your other electronic components receiver servo and motor since these are normally not waterproof and will get damaged due to the water Changing Mode settings without the transmitter At race events you usually do not have access to your transmitter but never mind since you can simply disconnect the receiver lead from the receiver and change the MODE settings as described i
13. too strong or motor is damaged 9 TROUBLESHOOTING GUIDE SYMPTOM CAUSE REMEDY Overload protection activated Speed control defective No servo and no motor function Speedo connected to receiver with wrong polarity RX Switch Harness not plugged in correctly Crystal defective Replace components one by one Servo is working no motor function Speed control plugged in incorrectly Receiver defective Transmitter defective Motor stutters while accelerating Power Capacitor damaged Radio Interference Speed control defective Motor runs in reverse when accele Motor connected for reverse operation rating forward on the transmittal BM Motor connected with reversed polarity Transmitter settings changed after set up Power Capacitor damaged Speed control defective Speed control switches off Model used too often without cool down periods frequently Motor stronger than motorlimit or input voltage too high the specifications of the speed control Motor pinion too big e g gear ratio too long Motor never stops runs at constant Transmitter settings changed after set up Repeat set up procedure slow speed Radio interference Receiver or antenna too close to power wires See Installation Tips and Installation motor battery or speed control Receiver aerial too short or coiled up Receiver defective too sensitive Replace components one by one Transmitter defective transmitter output power Only use original manufacture
14. witch off the car and then switch off the transmitter At the start of each run switch on the transmitter first then switch on the car For storage of the car disconnect the drive battery at all times CHECKING THE FUNCTIONS Check the LED s when moving your throttle stick and you will see if everything is setup correctly FUNCTION STATUS Left LED Right LED Neutral automatic brake inactive o bue po red Sf red Forward fulltthrottle f yellow ble Brake fullbrake red blue 6 SUPPRESSION capacitor capacitor ONLY FOR BRUSHED MOTORS Motors with no Capacitors or not enough capacitors may interfere with the speed control To avoid this solder the supplied capacitors to your motor see picture Mabuchi motor Racing motor capacitor 7 MODE PROGRAMMING are shown in grey colour This is the first LRP speed control using a single button setup for radio setup and mode adjustments therefore it works ina slightly different way than known from LRP speed controls before but we have retained the simple and intuitive logic from before to make it as user friendly as possible e How to get into programming the modes gt With speedo turned on press button for 3sec until all 3 LED s flicker twice quickly gt check LED flashing sequence of left LED s gt Count the number of flashes of the blue LED value 1 value 2 etc gt Press button to increase value by one
15. y Caution Avoid soldering longer than 5sec per soldering joint when replacing the power wires on the speed control and motor to prevent possible damage due to overheating of the components e Attach switch RX wire harness to speedo be careful with correct polarity e Connect the speed control to the receiver position Channel 2 Brushless Motor Brushed Motor e Speedo MOT A gt Motor A e Speedo MOT B gt Motor B e Speedo MOT C gt Motor C e Speedo MOT A blue and MOT B yellow will be the combined minus on brushed motor e Speedo MOT C orange is the plus on bruhed motor e Doublecheck all connections before connecting the speed control to a battery CAUTION If battery is connected with reversed polarity it will destroy your speed control e Red power wire e Black power wire gt Speedo to battery Plus gt Speedo to battery Minus e The speed control is now ready to be set up see section 5 3 USAGE TIPS Position the speed control and capacitor where they are protected in the event of a crash and gives you easy access to the connectors and button Make sure there is enough clearance between the speed control power wires antenna and receiver Avoid any direct contact between power components the receiver or the antenna as this can cause interference If interference occurs position the components at a different place in the model Mount the speedo and c

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