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18.6. Output Surge Problem - Hardware Bug, With Fix

Some RD60xx have a small hardware problem…

Depending on your version and your primary supply, there may be a surge at the output when
the primary power supply is turned on.

This occurs regardless of the ‘

Boot Output

’ setting.

For further technical info, see the original EEVBlog Forum post

HERE

.

Below is an oscilloscope screenshot showing the problem on a RD6012:

RD6012 output (RED Binding Post) when

Primary Power Supply

energised.

This is a hardware problem that occurs when the RD60xx’s on-board TL594 Integrated Circuit (IC) is
first powered, but before the RD60xx unit has entered a stable operating mode.

18.6.1. How to get rid of the problem:

Replace R22

with a resistor value between 68K - 100K.

This will increase the turn-on delay time, reducing or eliminating the problem.

Summary of Contents for RD60 Series

Page 1: ...anks to UniSoft for both writing the firmware and technical assistance in creating this document This document is user created and definitely has errors and omissions Use with Caution For any correction or additions to this document contact Sunkmail by the link provided or through the associated forum thread on EEVBlog com Latest Document Change March 19 2021 ...

Page 2: ...y Icon Page 13 9 1 1 Battery Charger Group 13 9 2 Gear Icon Page 13 9 2 1 Power Group 13 9 2 2 Display Group 13 9 2 3 Communication Group 13 9 2 4 Units Group 13 9 2 5 Date and Time Group 13 9 3 Home Icon Page 14 9 3 1 Interface Group 14 9 3 2 Appearance Group 14 9 3 3 Buzzer Group 14 9 3 4 Layout 1 Group 14 9 3 5 Colours Group 14 9 4 Disc Icon Memory Location Values Menu 15 9 5 Screwdriver Icon P...

Page 3: ...een previously configured 65 19 2 If WiFi has been configured previously 66 19 3 If you want to change the Server s IP address 66 19 4 If you want to change the AP or if WiFi no longer works at all and you want to start all over 66 20 Other Software and Utilities 67 20 1 ScreenDumper Utility 67 20 2 How to Change the Boot Logo Image 68 21 Battery Charging Methods with the RD60xx 69 21 1 Battery ch...

Page 4: ...olts DC without load As most of the screenshots are from the primary authors equipment small differences may appear between the reader s PS and other models For example only the RD6006 has 1 milliAmp mA current setting resolution while the two larger models have 10 milliAmp current setting resolution Bigger is not always better On 25 June 2020 eevblog user UniSoft posted to the Test Equipment boar...

Page 5: ...ined in this document is correct The Document Authors Contributors and Firmware Author are not responsible for any error or omissions or for the results obtained from the use of this information All information in this document is provided as is with no guarantee of completeness accuracy usefulness timeliness or the results obtained from the use of this information and without any warranties of an...

Page 6: ...reen with yellow stripe insulated wire or bare copper wire also known as protective earth then the 3 output terminals on the front of the RD60xx units will also be isolated This makes the RD60xx unit a floating supply Some confusion may arise due to Ruideng s choice of a green terminal as an alternate terminal for battery charging since many other power supplies choose to have a green third termin...

Page 7: ...10 Driver for USB interface connection Only needed if your computer doesn t see the RD60xx on a Windows 10 computer Any OS MacOS Linux Windows Timo Kokkonen s Riden flashtool Requires command line and Python 3 6 1 Prepare the RD60xx IF using the default RD60xx Riden Firmware 1 Press SHIFT MENU to enter the menu system 2 Ensure Interface is set to USB using the direction keys Note This image may no...

Page 8: ...n the front of the RD60xx IF any difficulties are encountered or existing firmware is corrupted Press the ENTER button while turning ON the Primary Power Supply This will manually put the RD60xx into Boot Mode 6 2 If you use UniSoft s RDFlasher on Windows 1 In your computer s file manager Ensure the latest firmware BIN file is in the FIRMWARES sub folder of the RDFlasher utility If not the Flasher...

Page 9: ...own box Turn ON the RD60xx s Primary Power Supply c Click the Connect button d Click the Write button e Wait for the write process to complete DO NOT turn off the power during this process Notes If you flash back to the stock firmware from the custom firmware you should restore default settings To reset default parameters Press 0 while powering on the RD60xx ...

Page 10: ... pip3 via the command pip3 install pyserial If you don t have pip3 and don t know how to install that you might also be able to install pyserial directly through your OS s package manager probably as python3 serial 5 Pick a directory you want to install the software in 6 Fetch the software from github via your preferred method Some different ways of doing it are a via command line git if you have ...

Page 11: ... post terminal H Battery Positive Binding post terminal Dedicated Battery Charging output I Output Positive Binding post terminal General Purpose Output J Output ON OFF button K ENCODER knob L Direction arrows M ENTER button N Numbered KEYPAD O Display Display Screen Layout for Detail Safety NOTE The GREEN Binding post IS NOT GROUND ...

Page 12: ...Menu Category With No Options selected Press or OR Rotate Encoder Knob To Enter Current Session Settings From Any Non Settings page SHIFT To Enter Quick Settings From Any Non Settings page SHIFT To select current menu options Press or To Change Selection Value Press or OR Rotate Encoder knob Numbered settings can also use the numbered keypad To Backspace when using the keypad Press To Confirm Sele...

Page 13: ...tate Boot Output AutoPowerOff Max Power Power Switch Standby LED External LED ISET OCP 200 OTP ext UVP ORP ORP set ORP delay 9 2 2 Display Group Backlight Screensaver ScrsaverBright ScrsaverActive Update Rate Boot Logo 9 2 3 Communication Group USB Interface UART Interface UART Baudrate Server IP Address Comm Buzzer Skip keys lock 9 2 4 Units Group Temperature 9 2 5 Date and Time Group Date Format...

Page 14: ...oup Mute Key Beep OxP Beep Timer Beep AutoPwrOffBeep CV CC Beep CC Buzzer 9 3 4 Layout 1 Group Show Option Show INPUT Show V SET Show I SET Show OVP Show OCP Show OPP Show RL Show t EXT Show V BATT Show t BATT Show TIME Show CHARGE 9 3 5 Colours Group Colours Group Detailed Explanation Voltage Current Current CC CurrentBg CC Power Input V SET I SET OVP OCP OPP RL Ah Wh Temperature BattVoltage Batt...

Page 15: ...holder placeholder placeholder placeholder placeholder placeholder 9 5 Screwdriver Icon Page Under Construction This menu is currently not in use 9 6 Info Icon Device Information Page Read Only Product Model Serial Number Firmware Temperature Internal 10 Current Session CS Menu Layout SHIFT Timer Mode Timer Off Timer On Timer Reset CC Buzzer ...

Page 16: ...ngs QS Menu Layout SHIFT UVP ORP ORP set ORP delay Graph Window 12 Other Settings Can Only be Enabled by Panel buttons I SET Press I SET OPP Press SHIFT MEM OCP Press SHIFT I SET OVP Press SHIFT V SET V SET Press V SET ...

Page 17: ...Reset Metrics Ah Wh Time MEM Set OPP SHIFT MEM Status Bar Info Displayed or 13 1 Graph Mode Only Enter View Mode MEM ENTER Switch to Auto Scaling MEM Press click ENCODER Start Stop Pause ENTER Select Parameter to Scale ENCODER Change Offset Y or Reset Offset Y MEM or See Graph Display Detailed Explanation for full details of graphing mode ...

Page 18: ...put off no user interaction no communication Any user input or external communication will reset the timer AutoPwrOffBeep Buzzer If AutoPowerOff Enabled ON Buzzer will sound when AutoPowerOff activated timer reaches 0 OFF Buzzer will NOT sound when AutoPowerOff activated Backlight Display Settable Range 0 5 Screen Brightness Selection Higher setting is brighter Boot Logo Display ON Display Logo Sp...

Page 19: ...ng CC Buzzer Buzzer ON Buzzer sounds continuously for 30 seconds when in Constant Current CC mode OFF Buzzer does NOT sound when in CC mode This option does NOT affect the operation of the CV CC Beep option CC Buzzer CS menu Same as CC Buzzer above except Operation returns to CC Buzzer value on next Power On Charge Buzzer Battery Charger ON Buzzer sounds once when a Battery Charging cycle complete...

Page 20: ...ed for Ni based chemistries NiMh NiCd Experimental use only may not work correctly due to the low ADC resolution Algorithm taken from this project CutOff cap Battery Charger OFF NOT monitoring for total capacity charged while battery charging Value Set in 0 001Ah steps IF Set Battery charging cycle will halt once the set value is achieved Note This setting is only applicable using the Green Batter...

Page 21: ...ost Should be set to a higher value than the ambient temperature for proper operation CutOff temp setting is similar to the OTP EXT setting in that both serve the same purpose of setting an upper temperature limit However OTP EXT is a global feature not limited to battery charging final safety measure not specifically for battery charging IF CutOff temp AND OTP EXT are Enabled The value of OTP EXT...

Page 22: ...t up the Custom Colours see Colours Group Detailed Explanation CV CC Beep Buzzer ON Buzzer sounds once when switching from CV to CC mode OFF Buzzer does NOT sound when switching between modes Date Date and Time Rotate the Encoder knob to the desired value Use or to switch selected fields Date Format Date and Time Selectable Options YYYY MM DD DD MM YYYY ...

Page 23: ...23 Digits Style Appearance Change the appearance of digits on screen Four options are available Digits Style 32x64 Digits Style 24x48 Digits Style 7 Seg v1 Digits Style 7 Seg v2 ...

Page 24: ...on Blinking Red VR CG OxP CV Red CC Green OxP Protection Blinking Red IF the External LED Modification has NOT been made This value has NO effect Good practice Set to OFF Graph Window Accessed via Quick Setting Menu SHIFT Settable Range 00h 01m 23h 59m This is the time of the entire width of the graphing window as indicated in the image Note Values will be averaged as needed to fit the desired tim...

Page 25: ...ately as a more advanced expensive PS_s would do With ISET OCP 200 ON The unit WILL allow the output Current to go to whatever value is selected I SET regardless of the OCP value However since the value is above the OCP value Protection Mode will still be activated after the delay IF the output current has not fallen back below the OCP value This setup is for load devices with high in rush current...

Page 26: ...ill result in the option being set to OFF On Testing the Delay is typically around 250ms but has been measured up to 600ms IVSet Timeout Appearance OFF IVSet Timeout is NOT enabled Settable Range 00m 01s 99m 59s Determines if and for how long the unit will wait for data entry when setting a value using the I SET or V SET buttons This applies for setting the Voltage Current OVP OCP or OPP values IF...

Page 27: ... Sets Default screen on Power up LastState Layout used last on previous session 0 Default Layout from original manufacturer Firmware 1 Customisable Layout as selected on the Layout 1 Group settings 2 Battery Charging Layout 3 Graph Display Layout A simplified graphical preview of the selected layout will be shown below the setting Show Examples ...

Page 28: ...28 Leading Zeros Appearance Change the appearance behaviour of digits and decimal points on screen Three options are available Default Blank FloatPoint ...

Page 29: ...mple IF using a 800W primary supply on an RD6018 Set the Max Power value no higher than 800W x 0 95 760W Mem Hint Appearance OFF Memory Hint will not be displayed Value Time in seconds that the Memory Hint will be displayed When enabled Pressing a memory location number M1 M9 will display the values stored at that location for the time set Pressing the same button again double press will apply the...

Page 30: ... The Normal Operating Mode indicator is replaced by a red background white OCP Icon Notes Disabled by setting to 0 When Setting SHIFT button will be illuminated to visually distinguish an OCP input from an I SET input OCP is controlled via firmware not hardware As a result there could be a delay of up to 600ms between the Current reaching the set value and the RD60xx going into Protection Mode Sho...

Page 31: ... OPP does NOT override the MAX Power setting The PC Software and Smartphone App from Ruideng DO NOT recognize this error IF the RD60xx enters Protection mode due to OPP Connected Riden Software using any interface USB UART will report an OCP Error ORP Over Resistance Protection Power Settings or Quick Setting Menu SHIFT ON Unit monitors for Over Resistance using ORP delay and ORP set settings OFF ...

Page 32: ... trip after the ON OFF button enabled the output With the resistor pre connected It took 1 2 seconds to trip when the resistor was connected while the output was already enabled ORP delay Power Settings or Quick Setting Menu SHIFT Auto Waits until the Voltage has stopped rising for at least 500ms Value Set in 0 1s seconds steps up to a maximum of 10 seconds IF ORP ON Time the load at the resistanc...

Page 33: ...at its minimum value of 0 1 seconds and the 5 Ω resistor setup used in the ORP example ORP tripped at 0 14 seconds from the ON button being pressed Measured from when the output voltage started to rise above zero With the RD6018 already ON it took about 0 7 seconds to trip after the 5 Ω resistor was connected ORP set Power Settings or Quick Setting Menu SHIFT Value Set in 0 01Ω steps starting from...

Page 34: ... Mode during all modes of operation CutOff temp only triggers Protection Mode during charging operations IF CutOff temp is enabled This value OTP EXT should be set to a higher value than the CutOff temp to ensure proper operation during charging cycles OVP Over Voltage Protection Can only be enabled by Panel buttons SHIFT V SET IF the Voltage reaches or exceeds the set value Unit will enter Protec...

Page 35: ...installed in the RD60xx to operate If the battery is NOT installed the unit will operate as per the Power Off option Power Switch Power Settings IF the Front Power Switch Modification is installed ON Enables use of the Front Power Switch OFF Disables the Front Power Switch IF the Front Power Switch Modification has NOT been made ON Will add a few seconds start up delay Otherwise no effect OFF No e...

Page 36: ...thing using the default settings each power up Notes Saves graph settings for Vertical Scale and Y offsets See Graph Display Detailed Explanation for a detailed explanation of the Graphing Mode Screensaver Display Never Do NOT enable Screensaver after a set time Settable Range 00h 01m 59h 59m IF NO user input Screen brightness will decrease to the ScrsaverBright value after set time Notes Timer wi...

Page 37: ... Values 0 4 are equivalent to the same value in backlight Ie ScrsaverBright 2 backlight 2 When changing this setting the display will adjust the backlight to preview the effect ScrsaverBright must be less or equal to the equivalent Backlight value for normal operation Server IP Communication Settable Range 000 000 000 000 255 255 255 255 Edit IP address of the server if it was assigned during WiFi...

Page 38: ... Show INPUT Show V SET Show I SET Show OVP Show OCP Show OPP Show RL Show t EXT Show V BATT Show t BATT Show TIME Show CHARGE When ON the Option s Value will be displayed when Layout 1 is selected as the current screen Layout Notes A maximum of 6 Show Options can be displayed at one time IF more Show Options are selected The 6 ON options closest to the top of the list are shown V BATT t BATT and C...

Page 39: ...Pressing ON OFF button will accept and exit Voltage or Current adjustments IF ON Pressing ON OFF will toggle the output state only Any in process Voltage or Current adjustments are NOT taken into account and the adjustment setting cursor remains active IF OFF Pressing ON OFF will toggle the output state AND immediately exit without saving any in process Voltage or Current setting adjustment Standb...

Page 40: ...rrent measurements ADC IN BA Raw ADC value of Input From Primary Supply and Battery ADC Temp Raw ADC value of Internal and External Sensor values Notes Raw ADC values can be used for calibration purposes See Raw ADC Values and Calibration section for more detail t EXT icon Appearance ON Battery Charging icon will include the value from the External Temperature Probe OFF Battery Charging icon will ...

Page 41: ...me is set it may cause incorrect totals for accumulated values Timer Beep Buzzer ON Buzzer sounds once when an active timer in the Current Session CS menu reaches zero OFF Buzzer does NOT sound when a CS timer reaches zero Timer icon Appearance ON Normal Operating Mode icon will include the value of any timer currently running OFF Normal Operating Mode icon will NOT include any timer information E...

Page 42: ...t in unexpected behaviour Setting is automatically disabled on power down Timer Off CS Menu Settable Range 00 00 00 99 59 59 Hours Minutes Seconds IF Set to 00 00 00 Timer Mode will not activate IF Timer Mode active When value reaches 00 00 00 output will turn OFF IF Timer On is set to 00 00 00 When Timer Off expires Output will turn OFF The Normal Operating Mode indicator is replaced by a white o...

Page 43: ...has already passed since the output was turned ON Enabling this option forces the timer to reset when the settings are applied V SET Set Voltage in Volts Can Only be Enabled by Panel button V SET Value of the Voltage Setpoint in Volts for when the unit is in CV Mode It also represents an upper limit for Voltage when in CC Mode Rotate Encoder Knob to desired value Use or to switch selected multipli...

Page 44: ...face setting WIFI configures the optional WiFi module using AT commands See How to Connect to WiFi section for details RS485 uses a simple UART Enable En pin Set while communicating For interface with the optional proprietary RS485 module designed for the RD60xx series RS485 Interface Mode has NOT Been Tested UniSoft kept the original Riden firmware code TTL option can be used for any user defined...

Page 45: ... UVP Under Voltage Protection Power Settings or Quick Setting Menu SHIFT Value Minimum allowable output Voltage during normal operation IF the Voltage falls below the set value Unit will enter Protection Mode The output will immediately turn OFF The ON OFF button will turn off its illumination or react per the setting of External LED The Normal Operating Mode indicator is replaced by a red backgro...

Page 46: ...ustomised or if the entire system uses the default colour scheme Each item in the Colours Group can be individually adjusted to any of the following Default Default will show whatever colour the default value is for that particular option RED GREEN BLUE WHITE YELLOW MAGENTA CYAN DARK BLUE GRAY BROWN ORANGE OLIVE TEAL PINK MAROON Note Graph V Graph I Graph W Graph t These selections are for the col...

Page 47: ...47 As an alternative while in CC mode it is possible to set the font colour and the background colour as shown in the examples below ...

Page 48: ... current Voltage Under that in cyan is the current amperage the load in this case is a 10 Ohm 20 Watt resistor Under that in pink is the current Power being output which is the product of the previous two values Those colours correspond to the units of the lines on the graph The white grey line the topmost line on the graph is the temperature reading from the External EXT Temperature sensor The ic...

Page 49: ...n the Quick Settings Menu SHIFT The fastest setting permitted is 1 minute and that implies that a set of values written at the right margin will take 1 minute to be pushed to the left margin If the Graph Window setting was 1 hour then values will take 1 hour to move from the right margin to the left margin The yellow Graph Window Time shown top left is what is being set in the Graph Window setting...

Page 50: ...he white TIME with red background is the reason why the charging cycle stopped Switch to Autoscaling Y Axis MEM Press Click ENCODER Pause Play ENTER Select parameter to scale ENCODER Change Offset Y or Reset Offset Y MEM or Graph View mode Only Todo Integrate below into this section Repeatedly pressing the auto scaling combo cycles through voltage current power external temperature auto scaling If...

Page 51: ...the ENCODER knob toggles between coarse and fine adjustment of the Indexing line position Where the Indexing line intersects the Voltage Current Wattage and EXT Temperature graph lines the values of those lines are displayed on the right along with a timestamp that corresponds to the x axis position To Exit Graph View Mode Press ENTER Note ENTER Does NOT pause resume the graph while in View Mode ...

Page 52: ...143 ADC V 0 143 1 144 2 Find ADC V x the ADC reading of a known calibrated value For this example let it be 50V Set output to 50 00V and turn ON Using the ENCODER Knob adjust output voltage to be as close to 50V as measured using a calibrated multimeter Observe the value of ADC V for a while Take the most stable value usually a middle one In this example ADC V x 29109 3 Calculate calibration const...

Page 53: ...just the Calibration From Riden Power Supply Software Calibration tab password 168168 To restore factory calibration it is unique for each device Pressing 1 while Powering ON ToDo Add more detail here add screen shots A ...

Page 54: ...54 18 Hardware Modifications 18 1 Accessing the Internals ToDo Explain how to get at the insides remove binding posts ...

Page 55: ... is a YouTube video showing one of the options available with this modification RD60xx External LED Mod In Action Here is the link to the Original Posting about this modification on EEVBlog Materials Needed Insulated Hook up Wire 30 Gauge or smallest available suggested LED Red 0603 or 0805 package Resistor 470 Ω surface mount package suggested 1 Access the Front side of the Front PCB See Accessin...

Page 56: ...ractical drill size to create a hole hook up wire can pass through 0 4mm or next smallest available suggested Try to position the hole near the bottom of the copper area Be cautious to NOT break the trace running below 4 Clean up the hole on the rear of the PCB Using a larger diameter drill bit remove any burrs left over from the drilling done in the previous step ...

Page 57: ...copper Use a continuity checker to confirm the new island of copper is not shorted to ground Tin both pads in preparation soldering As shown to right 6 Solder in new Red LED Ensure the new LED is in the same orientation as the existing LED This image also shows the next step completed as seen from the front of the PCB ...

Page 58: ... insulated from the ground plane on the back of the PCB The wire s insulation should be passing through the hole 8 Connect the other end of the hook up wire to the pad shown through the 470 Ω Resistor The pad is located between the 2x8 header and the crystal Wire connected to pad Below R38 through a 0605 package 470 Ω Resistor ...

Page 59: ...59 9 Test Reassemble Unit Here is the result As an alternative solution Illuminate the button from the side by installing a Bright LED inside the case For example ...

Page 60: ... Added option Power Switch to turn On Off the primary PSU 5V standby power supply required Note Adds a 3 second power on delay The control output is routed to the PA14 port pin 4 of the J2 connector High level turn on floating or low level turn off Note the maximum load on the port is 20mA it is better to use an optocoupler ...

Page 61: ...t Accuracy Apply thermal paste between the thermistor and heatsink to more accurately display the temperature 18 5 Using the TTL Interface User example from EEVBlog forum Communication Protocol From EEVBlog post Protocol reverse engineering HERE ...

Page 62: ...original EEVBlog Forum post HERE Below is an oscilloscope screenshot showing the problem on a RD6012 RD6012 output RED Binding Post when Primary Power Supply energised This is a hardware problem that occurs when the RD60xx s on board TL594 Integrated Circuit IC is first powered but before the RD60xx unit has entered a stable operating mode 18 6 1 How to get rid of the problem Replace R22 with a re...

Page 63: ...63 Schematic view of the part to replace Exact location of R22 on the PCB inside the RD60xx With 56K Resistor installed ...

Page 64: ...ask 0805 Components can fairly easily fit for mod 75K Resistor Installed The output surge becomes much smaller as measured with a 56K resistor installed Increasing the resistance of the resistor increases the turn on delay even more Resultantly the surge at the output will become even less or completely disappear UniSoft suggests a resistor value between 68K 100K ...

Page 65: ... built around a very common device the ESP12 F See https cuttlefishblacknet wordpress com 2020 03 01 riden rd6006 wifi or https community home assistant io t riden rd6006 dc power supply ha support wifi 163849 and the ESP User Guide Using Smart Config 19 1 If WiFi Has NOT been previously configured Select WIFI in the UART Interface setting Exit the menu Press ENTER The setting is saved on menu exi...

Page 66: ...entials or provided the credentials of an AP that is not on regular 2 4GHz Check that Look at the log of your WiFi AP to see if the connection from the RD60xx is accepted Your WiFi AP has guest isolation You can only bypass this by disabling guest isolation or by using a wired network to your PC and controlling the RD60xx from there The signal strength was bad Make sure that the signal strength is...

Page 67: ... can capture the RD60xx s Display and save it as an image file Note This image is from a pre release of RDScreenDumper v1 3 v1 2 is the latest released version CAUTION This utility requires approximately 14 seconds to receive a screen capture from the RD60xx unit at a baud rate of 115200 Longer for slower speeds completely locking the firmware for the duration During this time the RD60xx WILL NOT ...

Page 68: ...68 20 2 How to Change the Boot Logo Image TODO Re Write instructions from original bad english Riden manual for changing Boot Logo Image ...

Page 69: ...have protective circuits in them This all can be important Also know what you want to achieve Do you just want a charged battery as fast as possible do you want the fullest possible battery or do you want to find the right optimum for a long life of your battery You will have to choose as it is very unlikely that you can have all of that at the same time Ideally find out the exact type of battery ...

Page 70: ...our battery 21 2 Connecting a battery Before connecting the battery make sure the power supply is on but the output is switched off The battery should be connected to the black and the green terminals or respectively G and H in the image in chapter 7 Front Panel Layout Do not connect the battery to the red terminal Doing so will damage the power supply When connected and provided the battery provi...

Page 71: ...ge Provided a relatively low current is used and the charge time is not too long most batteries can be charged this way The downsides are that this method is very unlikely to provide an optimum charge and when used inappropriately can severely shorten the battery life or be downright dangerous If you use this method exclusively be prepared to shorten the charge time as the battery ages or you will...

Page 72: ...pper limit 21 4 4 Temperature limit High temperatures can shorten the life of almost all battery types Also some battery types like Lithium ion and NiMH show a rather sharp increase in temperature once they reach a full charge Therefore it can be very interesting to use the external temperature sensor of the RD60xx for the charging process be it for detection of end of charge or just as an additio...

Page 73: ...s some batteries gas out most Lead Acid types for example even the airtight sealed types Especially for Lithium ion and NiMH set the charge current just low enough that it will not cause significant heating during the charge and you will better be able to detect the sudden temperature rise at the end of charge 21 4 5 dV dT The dv dt method or better dv dt method is for NiMH and NiCd batteries Thes...

Page 74: ... charge at a rather low current and can be left on for lengthy periods without significant damage to the battery As lithium ion batteries do not support overcharging they can only be float charged at a voltage equal to or slightly lower than the cell voltage resulting in 0 charge current after the cell is full If a charge current remains you will damage the battery Lead acid batteries can be float...

Page 75: ...ginal Riden Manual https drive google com drive folders 1V0l6P1sIJilN1yBOsTO9YGLVdkuO0cX9 22 2 Fuses 1808 SMD Fuses RD6006 10A RD6012 20A RD6018 25A Note Image for reference only Value shown is NOT correct for the RD60xx Example datasheet ...

Page 76: ...stors in parallel V SET 10V I SET 10A Test method Output was turned ON and allowed to settle at 10V 2A A short circuit was introduced Results Starting from 2 Amps the current goes up to 27 Amps perhaps higher for about 200 microseconds then settles back to around 10 Amps after about 600 microseconds ...

Page 77: ...ts The power at the first voltage and current intercept was around 500 Watts The current peaked at over 100 Amps Happily it is only for about 50 microseconds 22 4 Miscellaneous When the internal fan the one that is on the module itself is turned on a fan icon will be displayed Minimum battery voltage 500mV ...

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