TSX - EVDrives
Contents
1. Load Current Write Current Poll Current Poll All Status i Print Parameter Param Params DataLogging Map Listing Use indicates whether or not specific parameter is active in software Param No numeric ID of registry parameter Controller Value internal digital value of registry parameter Parameter Description function of controller affected by parameter value Changed Value indicates value of parameter has changed Navitas Technologies Ltd Page 38 TSX Separately Excited Motor Controllers The bottom portion of the page contains detailed information regarding a specific parameter The parameter detailed is indicated in the top section by the blue arrow in the leftmost side of the page This information is broken down into the following headings User Lim Lo lowest available limit of user value User Lim Hi highest available limit of user value User Value user specified value for selected parameter From the CONFIGURATION tab and MOTOR CONTROL sub tab the advanced screen can be accessed simply by right clicking on a specific parameter s value and selecting JUMP TO ADVANCED This will redirect the user to the ADVANCED page with the chosen MOTOR CONTROL parameter selected and detailed view of that parameter s values shown on the bottom half of the page The buttons on the bottom left of the ADVANCED page are Load Current Param reads selecte2. TSX Separately Excited Motor Controller User Guide p gt 5 i wae lt a x N S NER Navitas Technologies Ltd Navitas Technologies NVT is in the business of designing manufacturing and marketing digital drive and C 855 Trillium Drive hydraulic control systems for electric vehicles NVT control systems are used in battery powered industrial Kitchener Ontario N2R 1J9 Canada and commercial vehicles ranging from 96 volt locomotives to 12 volt walkies NVT s product advantages lie Phone 1 519 725 7871 in its efficiency flexible programmability and reliability NVT also offers application assistance to help design Fax 1 519 725 1645 the best overall solution for your vehicle NVT is a subsidiary of Tersus Energy Plc For more information www navitastechnologies com on Tersus please visit www tersusenergy com info navitastechnologies com Safety Operating and working on electric vehicles can be hazardous and is recommended only for individuals who have the appropriate training and safety equipment The vehicle manufacture s manual should be consulted before any work is attempted Always wear safety glasses and use properly insulated tools to avoid shorts when working on electric vehicles Common hazards include electric shock vehicle run away and risk of fire or explosion from hydrogen gas Electric Shock Battery packs in electric vehicles can generate high power
3. Separately Excited Motor Controllers SAVE PARAMETER SUBSET TO FILE sub tab Save Parameter Subset To File Subset of Auxiliary Throttle Params Primary Throttle Params Motor Tuning Params Auxiliary Throttle Params loads and saves only Auxiliary Throttle parameters Primary Throttle Params loads and saves only Primary Throttle parameters Motor Tuning Params loads and saves only Motor Tuning parameters A detailed description of parameter subsets is provided on this screen of the PC Probit I software Once a parameter sub set has been chosen click SAVE Parameter in the ADVANCED tab Navitas Technologies Ltd Page 37 TSX Separately Excited Motor Controllers The Advanced Tab The ADVANCED tab opens a page in the PC Probit II software that will allow the user access to all available parameters The top portion of the page is a continuous list of parameters that may be sorted by any column heading The columns are as follows R PC Probit 11 File Help Drive Status Configuration Connect File Handli CE peks ke krie E Description Value ACCESS 1 CAM Node ID S01 Primary Throttle Forward Dead Band x raRVyvall 1706 Forward Field Current Max raRVvVall 238 Forward Armature Current Min raRvVAll 1117 Forward Armature Current Mic raRVvAll lt User User User a Digita Tno sw sup info Lim Lo Lim Hi ae Lirm Hi Value Mask Description d 1 1 ormvYord CAM MODE ID
4. Outer Loop Time Navitas Technologies Ltd Neutral to Dir Change Outer stop Time Forgive Time Loop Time t t when enabled 12VDC is available on pin 17 of the 23 pin I O connector when enabled recommended the controller will set field current to the Field Brake Regen level during deceleration when enabled the controller will maintain the field current at the level specified by Fwd Field Min value specifies in mS amount of time SRO can be open without forcing controller to go to neutral specifies in mS amount of time controller direction switch can remain in neutral when changing directions before throttle must be returned to neutral as well timer in mS will retard the controller from changing directions system parameter not recommended to be adjusted without instruction from Navitas Technologies Page 18 TSX Separately Excited Motor Controllers Once all settings are confirmed in the SYSTEM sub tab move on to the PRIMARY THOTTLE sub tab and fill in parameters PC Probit Il File Help Connect Drive Status Co nftiguration FileHandling Advanced System Q Primary Throttle D Auxi lliary Throttle Digital Inputs Contactor Motor Control CAN Throttle Thr THROTTLE box settings Throttle Function Select Type Loss Detection Oto Sk ai Enabled A Mode Error Offset Passive Function Select not available on primary throttle Typ
5. or load the parameters or parameter changes into the controller Clicking on the APPLY button on the bottom right of any tab window starts this process Apply Connect Apply Changed zr Load All Send Write to EEPROM CMC Click APPLY CHANGED and the following prompt will appear Confirm Do you wish to apply the Write bo EEPROM Command Ok will apply the command Cancel Click OK and then cycle the key switch on and off to ensure the changes are correctly loaded into the controller s memory If any changes have been made to the CAN parameters of the controller the main power must be cycled to the controller not just a key on off Navitas Technologies Ltd Page 35 TSX Separately Excited Motor Controllers File Handling FILE HANDLING tab STANDARD sub tab PC Probit Il File Help Drive Status Configuration Connect 4 File Handling Advanced standard Custom FILE MANAGEMENT FOR ALL PARAMETERS m File Management for SLL parameters Load Parameter Set From File Save Full Parameter Set To File Load Parameter Set From File Save Full Parameter Set to File FILE HANDLING tab CUSTOM sub tab PC Probit Il File Help Drive Status Configuration Connect 4 File Handling dvanced Standard Gustom Custom l Navitas Technologies Ltd Page 36 TSX
6. NAVITAS TECHNOLOGIES IS NOT RESPONSIBLE FOR DAMAGE CAUSED TO A MOTOR DUE TO INCORRECT PROGRAMMING OF THE CONTROLLER BY THE USER Programming the controller requires the use of Navitas PC Probit II user interface software and dongle package and a Windows based computer running Windows XP or new operating system and at least one available com port Installing Navitas PC Probit Il Software and Drivers Reeser SOftware Information CD and internet 76 eer RE Navitas Technologies Ltd Page 13 TSX Separately Excited Motor Controllers Connecting the Computer to the TSX 500 Connect the 8 pin Ampseal connector with programming harness to the 8 pin data port on the TSX 500 48 The other end of the programming harness with DB 9 connector connects to the PC Probit II dongle The supplied USB cable will connect the dongle to the computer being used for programming With battery voltage applied to pin 8 and battery connected to pin 7 of the 23 pin I O connector open the PC Probit II software The software opens on the CONNECT tab PC Probit II File Help Drive Status Configuration Connect FileHandling Advanced Connect Properties COM Port CAN Node ID 1 Select E Scan Communication Options Profile Selection Polling Interval 20 4 ms PC Probit If CONNECT tab Click on the SELECT button to choose the appropriate com port Connect Properties COM Pa
7. T pam wm aa 0l pas pim 5 zy Oo 2 a D p C LE 37 013 11 36 45 0954 The above sample graph illustrates the results of plotting logged data relating to the controller s armature current during operation The X axis represents elapsed time and the Y axis represents the armature current This graph can be saved or printed from the menu at the bottom right of the window Graphs such as this can be produced from data logged from any of the parameters available in the SELECT STATUS REGS TO LOG window Page 43 Navitas Technologies Ltd TSX Separately Excited Motor Controllers Drive Status The Drive Status tab displays live parameters from the controller On this screen you can view sensor readings switch state information and error status from the controller PC Probit Il File Help Drive Status Configuration Connect FileHandling Advanced 3 Switch State Temperature T ill M a i mmm Forward Primary Throttle Voltage Auxiliary Throttle voltage 0 to 5 volts 0 to 5 volts mm Reverse Trip Clocks mmm Brake Tr Volts ei mE SRO mmm AUX Disabled Drive On Armature Yoltage Armature Current mmm ALS Disabled 0 0 hr 0 to 60 Yolts 600 to 600 Amps Mo Errors Field Voltage Field Current 105 to 105 Volts 30 to 50 Amps Run Time Errors Clear All eet EET cal le war ae a Battery Charge Battery Oto 100 Voltage
8. output when initially activated approx 500ms Hold Voltage continuous voltage level applied to aux output until deactivated For Aux 2 all settings are the same except for the omission of Brake Release Navitas Technologies Ltd Page 28 TSX Separately Excited Motor Controllers Now select MOTOR CONTROL sub tab M PC Probit Il File Help Drive Status Configuration Connect FileHandling Advanced er System Primary Throttle Aw dlliary Throttle Digital Inputs Contactor J Motor Control C Motor Tuning Fiel MOTOR TUNING is broken down into the following parameters WINDING RESISTANCE mOMS Winding Resistance monm Field Armature Field resistance of field winding Armature resistance of armature winding MAXIMUM SPEED Maximum Speed Forward Reverse t Forward of full speed forward Reverse of full speed reverse Navitas Technologies Ltd Page 29 TSX Separately Excited Motor Controllers RATE LIMITS Fate Limits Fld Step Arm Step Fld Step limits how fast field voltage can decay based on armature field map recommended to have this parameter set to Arm Step recommended that this parameter remains at its default value do not change without instruction from Navitas Technologies PEAK ARMATURE CURRENT AMPS Peak Armature Current Amps Motor Regen Peak Dir Ch o A FMg ABHI fx M
9. E E E e L 00 25 27 198 H t t 4 4 4 1 1 H 4h 4 4 4 4 1 H H F t t d be o25 27 5531 AME teeta am co o 00 25 25 200 a e r 00 25 25 5607 J i ee E LL J g T ra gr Ca in fae 5 oo 2 co ee a a DI ha ha un fra 3 5 Apr 19 0 D 5 ur wo 00 25 28 1651 217 084 If there are any spikes in the graph that indicates an area where the armature or field map variables will need to be adjusted Navitas Technologies Ltd Page 48 TSX Separately Excited Motor Controllers INSTALLATION NOTES Navitas Technologies Ltd Page 49
10. Excited Motor Controllers Setting the Field Min parameter This parameter will determine the maximum speed of the motor This parameter also affects the partial throttle drivability If you know the minimum field strength as specified by the motor manufacturer enter that into the Field Min parameter If you do not have this information set the Field Min to 5A Set the Field Mid value to provide a linear slope between the Field Min and Field Max parameters With the vehicle on the ground apply partial throttle and drive slowly You should not feel any shuddering or hear any abnormal noises from the motor If low speed torque performance is ok at this level then it 1s possible to lower the field further to increase maximum speed If there are any issues with partial throttle driving it may be necessary to increase the Field Min values If desired you can set the Field Min to different values in Forward and Reverse This will change the driving characteristics for each direction Setting the Field Mid parameter In most cases setting the Field Mid parameter to provide a linear slope from Field Min to Field Max will provide acceptable performance and drivability Make adjustments from here as necessary Setting the Armature Max parameter This parameter determines when the maximum field strength will be applied to the motor Setting this parameter too low will cause drivability issues Setting this parameter too high will lower t
11. Ltd Page 24 TSX Separately Excited Motor Controllers MOTOR SPEED SETUP parameters Motor Speed Setup Speed Encoder Motor Speed Limiting Anti Roll Away Disabled Speed Limit m b Speed Encoder when enabled controller will report current motor speed on Drive Status screen and also allows motor speed limiting and anti roll away Sensor Poles number of pulses per revolution of motor Motor Speed Limiting when enabled will limit the top speed of motor to preset value Max Rev RPM when Motor Speed Limiting enabled the maximum RPM of motor in reverse Max Fwd RPM when Motor Speed Limiting enabled the maximum RPM of motor in forward Anti Roll Away when enabled controller will prevent vehicle from rolling away if left on a slope Speed Limit when enabled limits the maximum speed that vehicle is allowed to roll when left on a slope Max Rev RPM maximum RPM when in Anti Roll Away Navitas Technologies Ltd Page 25 TSX Separately Excited Motor Controllers With DIGITAL INPUTS configured move to the CONTACTOR sub tab PC Probit II File Help Drive Status q Configuration D Connect FileHandling Advanced nfi g System Primary Throttle Auxilliary Throttle Digital Input Contactor Motor Control CAN Contactor setup All contactor outputs utilize PWM driver logic These outputs when activated provide a voltage between B and the drive circuit that briefly sta
12. Reset Min Max Values oo 2 The information shown on this tab is live whenever the controller is connected to the software The sensors show both a numeric reading of the current sensor value and also a bar graph display of the measurement Above the bar graphs there are a pair of pointers These pointers indicate the minimum and maximum value that the sensor has read When the mouse cursor is placed on top of the bar graph it will show a numeric display of current sensor value along with the minimum and maximum values that the sensor has read To reset these pointers press the Reset Min Max Values button under the sensor information Motor speed will only be displayed if the input has been enabled See Motor Speed_Setup The indicator next to the switch inputs will light up when the switch has been enabled Note When a bi directional throttle is used the indicator will light up when the controller has determined that a direction has been selected Navitas Technologies Ltd Page 44 TSX Separately Excited Motor Controllers ENHANCING VEHICLE PERFORMANCE Fine Tuning the Throttle Response When setting up the throttle you will want to use as much of the range of the throttle as possible Start by looking at the Drive Status tab With the throttle at rest make note of the voltage for the throttle input you are using Apply full throttle Make note of the voltage at full throttle Now that you know the sweep o
13. at which controller will start driving motor Yoage is the minimum output voltage of the controller at start This parameter is usually set to the same voltage as Throt Min and the age is set to 0 Throt Min throttle voltage where controller will start to drive in the reverse direction Throt Mid center point of throttle when Bi directional throttle is used Navitas Technologies Ltd Page 20 TSX Separately Excited Motor Controllers FORWARD VOLTS settings Forward volts Throat Min Dead Band Accel K Accel Y Throat Max awm E0 Bo 25 01 A LGX W Ly a HEY Hy o Throt Min throttle voltage at which controller will begin to operate Dead Band throttle voltage at which controller will start driving motor Yoage is the minimum output voltage of the controller at start This parameter is usually set to the same voltage as Throt Min and the age is set to 0 Accel X throttle voltage knee Accel Y system throttle Accel Y percentage of system throttle at Accel X voltage Throt Max throttle voltage at full speed or full speed forward if in Bi directional mode PRIMARY THROTTLE PROFILE box Primary Throttle Profile Bi directional Throttle a a 5 fee E wm oy Input Throttle Colts The curve plotted in this graph represents the way the controller will respond to the parameters that have been programmed into the software As changes are made to the throttle parameters the shape of
14. the curve will change For a larger view of the graph click Zoom in the PC Probit I software Navitas Technologies Ltd Page 21 TSX Separately Excited Motor Controllers Once all settings are confirmed in the PRIMARY THROTTLE sub tab move on to the AUXILIARY THOTTLE sub tab and fill in parameters PC Probit II File Help Drive Status d Configuration connect FileHandling Advanced System Primary Throttle q Auxilliary Throttle Digital Inputs Contactor MotorControl CAN Throttle f Note the type of throttle or throttle signal that can be used on both the Primary and Auxiliary throttle inputs will vary with the specific version of controller being used Please contact the local Navitas distributor to determine what types of throttles can be used on a specific controller In many cases only the Primary throttle needs to be set up and the Auxiliary throttle can be left in the DISABLED state Otherwise follow the same format for configuring the Auxiliary throttle as the steps shown previously for the Primary throttle Navitas Technologies Ltd Page 22 TSX Separately Excited Motor Controllers With all throttle settings configured continue to the DIGITAL INPUTS sub tab PC Probit Il File Help co nnect FileHandling Advanced Drive Status d Configuration igital ara ontactor Motor Control CAN System Primary Throttle Auxilliary Thrott
15. will be seen on the Throttle Profile display as a straight line from Throttle Min to Throttle Max For Bi directional throttles there are some differences In this throttle mode the Throttle Min is used to determine the direction command to the controller It then uses the Deadband parameter for the start point of the throttle Leave the Deadband set to 0 For this type of throttle it is recommended that the Accel X and Accel Y values be set to provide a linear throttle from Deadband to Throttle Max Navitas Technologies Ltd Page 45 TSX Separately Excited Motor Controllers Optimizing Motor Performance Tuning the controller for the motor will make a large difference in the performance of the motor Improperly set the motor may lack torque speed or may have drivability issues Parameters to control motor performance are found on the Motor Control tab of the PCProbit A couple of basic guidelines Torque is produced by a combination of Armature current and Field current Maximum torque will be produced when the field is at its highest level Speed is produced by maximum armature voltage and minimum field current There are numerous ways to configure the controller to work with the motor to achieve the same performance The goal is to achieve the performance with the best efficiency Setting the Field Max parameter If the maximum field strength of the motor is known set the Field Max both Forward and Reverse to th
16. 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 4M OB062006 11 27 58 4M OBO62006 11 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 AM OB62006 11 27 58 4M OB62006 11 27 58 AM OB62006 11 27 58 4M The VIEW LOGGED DATA window shows the logged data in a numerical format Any row can be selected to plot into a graph or the data can be saved Previously saved data can be loaded into this screen as well Filter allows advanced filtering of logged results Export sends logged data to a variety of different file formats Save Raw saves logged data Load Raw loads previously saved logged data Plot Selected graphs current parameter Navitas Technologies Ltd Page 42 TSX Separately Excited Motor Controllers Sample of Logged Data Graph frmChart Logging Results 125 115 JUBA SINE OFF LS SE Lb FSO 1S 9E bb L59 05 9E bb ede OS 9e bb F26 9E Lb eo 6F SE bb eGU 6F FE bb FEO BF FE Lb LOE BF SE bb SbL6 fP Se bb PeG t P SE bb SF ldt bb Sol OF FE bb BOE OP 9E bb LOB SP SE bb coo SP de bb amp be SP SE bb acarp gE Lb SPE FP DE Lb BSO PR GE LL rho P DE bb Facet gE bb SHo cP de Lb POS R E LL akker 9E EEL bE bb CFE LP SE Lb S56 0F 9E LH eS OF FE bb eo b OF SE Lb FEL 6E FE Lb LbP 6e SE bb SOU 6E 9e bb OLB SE bb a tt a a pm 7 wo 5 Cc 3 i Oo 2 a z 4i a
17. 311 310 3209 306 a07 306 a05 a04 a03 a02 301 300 299 293 297 296 295 294 _ _ _ _ _ _ _ a a dre oe llc et ol ell etl ll eS ll et ll Sl tl ll et ll lll a a 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 201 mo o 1 OF Aa A OM At Oo Oo Mm MOM Oo MO Oo aA mm co A TSX Separately Excited Motor Controllers 0 009 7680097680097 7 0 009 7680097680097 O 009 7680097680097 7 0 009 7680097680097 7 O 009 7680097680097 7 0 009 7680097680097 7 0 009 7680097680097 7 O 009 7680097680097 7 O 009 7660097680097 7 0 009 7660097680097 7 0 009 7680097680097 7 O 009 7680097680097 7 0 009 7660097680097 7 O 009 7680097680097 7 0 009 7680097680097 7 0 009 7680097680097 7 0 009 7668009768009 7 0 009 7680097680097 O 009 7660097680097 7 0 009 7680097680097 7 0 009 7660097680097 7 O 009 7680097680097 7 0 009 7660097680097 7 11 27 58 185 11 27 58 1447 11 27 58 104 11 27 598 064 11 27 59 0100 11 27 58 9723 11 27 58 934 11 27 58 595 11 27 58 5657 11 27 58 5619 11 27 58 7851 11 27 58 743 11 27 58 705 11 27 58 5667 11 27 58 5627 11 27 58 5859 11 27 58 551 11 27 58 513 11 27 58 4774 11 27 58 436 11 27 58 398 11 27 58 357 11 27 58 319 0670672008 11 27 59 4M OB62006 11 27 59 4M OB62006 11 27 59 4M OB62006 11 27 59 4M OB62006 11 27 59 4M OB062006 11 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 4M OB62006 11 27 58 4M OB62006 11
18. 8 in it and select Plot Selected The object is to get a smooth acceleration curve with the armature current It should look similar to the following frmChart Logging Results D e a I D L oo _ lt 00 25 18 505 00 25 18 324 eee eee ae ea eae oe ee ee tile ee eee wt _ _ 00 25 19 281 eee ees E E ee eee eee oo aa ae 00 25 18 0241 lobe got oaleecined aa cinel Nea bee ne teetine dine wiSecoe bested ee oi 00 25 20 075 4 a eee 4 00 25 20 5171 1 eee eee _ 00 25 20 8654 1 2 ea eee 00 25 74 2441 4 0 1 ae ree eee are 00 25 24 5o94 8 tee ere eet tt a 00 25 21 947 4 1 A a a ree tt 00 25 22 9924 l 1 222 Su SoS 00 25 FG boa te le ee re E bbe i a 00 25 23 9383 4 1 1 a a tt tt ttl 00 25 24 4254 1 1 4 4 7 1 L L 00 25 24 7814 ARE 00 25 26 7756 4 1 1 ATE ee ee eet ttt 00 25 27 993 1 2 ee 00 25 20 5754 7 00 25 29 2294 5 00 75 29 670 4 4i 2 ee Lann 00 25 30 1124 r 00 25 30 468 4 1 1 455 00 25 30 310 a e ei IOS ie Oh elie Sie eee he NIpeawc esse foal ee ea ee a ee ee oras ore eee E eet Wee aye ee eee E E eee a a TPG Cotes ea Seas rece oat ean Gemne le a E i Gee ee Nee een ee ee Pui se cd eee cee te al eres ete eee eres eee E ee 00 25 33 2286 g m rae ae i ay 5 0g 25 28 435 1 4 BI 0025 25 9624 i Ee E E Lianan fe 0025 2402
19. AVITAS WARRANTY Tighten F1 and F2 cables to 72 inch lbs and B M and B to 180 inch Ibs of torque The controller is shipped with 2 spare cable fasteners one 1 4 20 x 342 long for the F1 or F2 connection and one 5 16 18 x 34 long for the B M or B connection Ensure that cable lugs bolted to the controller are separated by a minimum of 1 8 to prevent electrical short circuits Once the controller wiring is completed and double checked test the vehicle operation with a fully charged battery and the drive wheels off the ground If the rotation of the wheels is opposite to what is require and the direction switch is in the correct position it may be necessary to reverse the connections for F1 and F2 at either the motor or the controller Navitas Technologies Ltd Page 12 TSX Separately Excited Motor Controllers INTRODUCTION TO THE PC PROBIT II SOFTWARE In order to complete the installation of the TSX 500 48 the controller must be programmed to suit the vehicle and tuned to the motor characteristics The user must be aware of the motor s peak and continuous current ratings for both the armature and the field as well as the motor s voltage rating Information regarding the speed sensor if equipped is necessary should the user intend to implement speed limiting with the controller OPERATING THE MOTOR OUTSIDE OF THE MOTOR MANUFACTURER S SPECIFICATIONS MAY CAUSE PERMANENT DAMAGE TO THE MOTOR AND OR CONTROLLER
20. T TO B a eee LINE CONTACTOR COIL PIN 23 CONNECT TO B Navitas Technologies Ltd Page 7 TSX Separately Excited Motor Controllers Wiring Various Throttle Types The TSX 500 48 is designed to be able to utilize a number of different types of throttles Once the throttle type is determined for the vehicle chose the correct wiring configuration from the diagrams below 0 5k Resistive Throttle 5K OHM POTENTIOMETER TSX I O CONNECTOR USE CENTER PIN 15 TERMINAL AND EITHER OUTSIDE TERMINAL TSX I O CONNECTOR PIN 16 0 5v Hall Effect Throttle HALL EFFECT POTENTIOMETER TSX I O CONNECTOR PIN 15 TSX I O CONNECTOR VOLTAGE PIN 16 SUPPLY TO APPROPRIATE VOLTAGE SOURCE REFER TO THROTTLE MANUFACTURER Navitas Technologies Ltd Page 8 ITS Inductive Style Throttle INDUCTIVE THROTTLE SENSOR TSX I O CONNECTOR PIN 9 TSX I O CONNECTOR PIN 16 TSX I O CONNECTOR PIN 14 B FROM SWITCHED SIDE OF KEY SWITCH Navitas Technologies Ltd TSX Separately Excited Motor Controllers NORMALLY CLOSED LIMIT SWITCH TERMINAL COMMON TERMINAL Page 9 TSX Separately Excited Motor Controllers Choosing and Using Contactors While the TSX 500 48 is capable of using contactor coils ranging anywhere from 12V to battery voltage For example a vehicle may have a 48V battery and the coils could be rated for 48V 36V 24V or 12V The TSX 500 48 has built in snubber diodes for all cont
21. actor and brake coil driver circuits therefore diodes are generally not required on the contactor coil The only time an external diode may be required across a coil is if a Switch is connected in series with the coil and the battery connection Navitas Technologies Ltd Page 10 TSX Separately Excited Motor Controllers High Current Connections NOTE Before making any high current connections make sure the battery is disconnected from battery battery or both Only reconnect the battery after all connections are complete and double checked 2 avras O O O TSX 500 48 B F2 MOTOR FIELD WINDING MOTOR ARMATURE WINDING LINE CONTACTOR BATTERY PACK TIPS 24 48VDC li IIF MAIN B FUSE Navitas Technologies Ltd Page 11 TSX Separately Excited Motor Controllers With the controller mounted to the vehicle connect the motor s field and armature connections as shown in the drawing above Be sure to use adequate sized cabling for the expected motor and battery current Make sure all lugs are attached solidly to the cables and inspect all existing wiring for damage to the insulation such as cuts nicks or burns Replace any questionable cabling When connecting the battery cables it is extremely important to ensure proper polarity IF THE BATTERY AND BATTERY CABLES ARE CONNECTED IMPROPERLY THE CONTROLLER WILL BE SEVERLY DAMAGED THIS TYPE OF DAMAGE IS NOT COVERED BY N
22. arcs if they are short circuited Always disconnect the battery when working on other parts of the motor control circuit Vehicle Run Away Under certain conditions an electric vehicle may run out of control Before work begins on the vehicle disconnect the motor if not needed and or using a properly rated jack raise the drive wheels off the ground to prevent vehicle run away Fire Explosion Lead acid batteries emit hydrogen gas during charging and discharging and can build up around the batteries Please refer to the battery manufacturers safety guidelines Revision History Issue Date Revision Author Changes First Revision Table of Contents OVERVIEW Stern ter meee tre ci eee te rr ee ne ete et ae ne A ee ee ee l CONTROLLER WIRING AND CONNECTIONS seeeeeeeeeseeseeereeereeeerrerererrerrrerererrrrrererees 2 Mounino the Cont ONC essensen E T E eoeenacesioar ies 2 Low Current ONE CIIONS arein a a alte ane euhbete 6 Warne Various Throne DV DGS eis sis inaca cet sncceasitauivote E EA EENS 8 O 5K Resistive TIOE sieni e A tee 8 0v HALE TEC Tirole veces vats ds erste oh cla enetsaxnigcneus tals E 8 Choosing and Using Contactors isser e ar 10 PieheC urrent Onn CONS eaen E ieuiese 11 INTRODUCTION TO THE PC PROBIT II SOFTWARE cecccccceceeeeeeeeeeeees 13 Installing Navitas PC Probit II Software and DrivefS ccccssseesseeceeeeeeeeeesseeeeeees 13 Connecting the Computer to the TSX 500 ccccccccccc
23. ccceesseeeeeeeeeeeeeaeeeseeeeeeeeeeeeeeeeees 14 Contigurins Controller Parameters sc iiccugsseiscchvsado ndesndaatetentenn tai aana 16 Pie cs 21000 LCS are eer renee Teo Maat a eet einen ttre A 36 RING SAY anced TaD E E E 38 D ta 10s C1 and Graphi eeen N 40 Pre Sta e a cece eee eee ene cece eee 44 Fine Tonma the Throttle Respons Cneneissn tenia ae tletdaieeloasenaatiaauaess 45 Opuimizine Motor Ferorman esos a E a a E ens 46 A coupe ot pasie GINCEMNCS seasatecke Misysttsdadisast e a a 46 setting the Field Max parameter sc cacessiienvsadestaacadaiishuesa tua paces an pa Era e 46 Setting the Field Min paramicter senienas n ENa 47 settine the Field Mid parameter iceccriexcieent vxchone x nsad a a ixpaek dtu R 47 Setting the Armature Max parameter eeeessesssseceressssssseceresssssssecrressssssseceressssss 47 Setting the Armature Min parameter cdencdicieinvntPaalawilcimevianiacs 47 Setting the Armature Mid parameter cccccsesssssseccccceeeeesssseeccceessaeeseeeeceeeeeeaas 47 Using the Datalogger to help tune the motor cc eeeseeeecceecceeeeeeeeeeeeeeeeeeeaeeeeees 48 INS TALLA TON NOTE S meciari AEAEE 49 TSX Separately Excited Motor Controllers OVERVIEW Thank you for purchasing a Navitas Technologies TSX motor controller This document is intended quick reference refresher for electric vehicle technicians already experienced in installing and programming Navitas TSX controllers If you have neve
24. d parameter value from controller Write Current Param writes selected parameter value into controller Poll Current Param constantly refreshes selected parameter value from controller Poll All Status Params constantly refreshes all parameter values from controller Navitas Technologies Ltd Page 39 TSX Separately Excited Motor Controllers Data Logging and Graphing The buttons on the bottom right of the ADVANCED page are Data Logging Create New Log initiates logging software that tracks parameter values over time see details View Saved Log displays previous log files Print Parameter Map Listing creates printable map of all parameters DATA LOGGING CREATE NEW LOG details SELECT STATUS REGS TO LOG window Select Status Regs to log Not Logging Logging Run Time Errors Low Run Time Errors High Start Up Errors Rey On Trip Clock Dive On Trip Clock Switch Stakes Primary Throttle Voltage Aueiary Throttle Yoltage Battery Voltage Temperature Field Current Field Voltage Armature Current Armature Voltage Motor Speed reel To create a new data log review the list of available parameters Select those parameters which will be logged from the Not Logging list and add them to the Logging list by clicking the parameter and then clicking the single right arrow To add multiple consecutive parameters click on the top parameter of the required set ho
25. e select 0 5K 5K O or bi directional throttle Loss Detection enabling causes controller to shut down if no throttle is detected or throttle level is too high on the primary input Mode select between passive resistive or active voltage Error Offset tolerance voltage for throttle loss detection Navitas Technologies Ltd Page 19 TSX Separately Excited Motor Controllers Settings for THROTTLE RATE LIMITS box Throttle Rate Limits m1 mS FWO Accel FWO Decel REY Accel REY Decel FWD Accel adjusts maximum rate of throttle change in mV mS during forward acceleration FWD Decel adjusts maximum rate of throttle change in mV mS during forward deceleration REV Accel adjusts maximum rate of throttle change in mV mS during reverse acceleration REV Decel adjusts maximum rate of throttle change in mV mS during reverse deceleration REVERSE VOLTS settings Reverse Volts Throt hlas Accel x Accel Y Dead Hand Throt hiin Throt hid UA Bx By 5 Cx Cy Sp iD E Note these settings are only accessible if the throttle type is set to BI DIRECTIONAL Otherwise this box will be grayed out and only the forward settings can be changed Throt Max throttle voltage at full speed reverse 100 system throttle Accel X throttle voltage knee Accel Y system throttle Accel Y percentage of system throttle at Accel X voltage Dead Band throttle voltage
26. ell Over Voltage Protection Enabled controller disabled will not start up if battery voltage rises above Trip Point value Over Voltage Protection Disabled controller ignores Trip Point value Navitas Technologies Ltd Page 16 TSX Separately Excited Motor Controllers In the BDI SETUP box enter the values and settings you wish to use BDI Setup BOI Enable Trip Voltage state Enabled Forward Cutback T Reverse Litt Disable Cutback Timer BDI Enable State Trip Voltage Reset Voltage Forward Cutback Reverse Cutback Lift Disable Timer Navitas Technologies Ltd defaults to disabled select enable to activate BDI features voltage level at which the controller will go into BDI cutback mode voltage level at which the controller will automatically exit BDI cutback mode percentage of full forward speed that vehicle will be limited to during BDI cutback percentage of full reverse speed that vehicle will be limited to during BDI cutback the amount of time seconds until the lift contactor if used no longer functions after BDI is tripped Page 17 Settings for MISC box Wisc 127 Output Disabled TSX Separately Excited Motor Controllers Throt Decel Fld Meutral Field Enabled Enabled Timers milliseconds SRO Forgive Time 12V Output Throt Decel Fld Neutral Field SRO Forgive Time Neutral to Stop Time Dir Change Forgive Time
27. f the throttle we will set the Throttle Min and Throttle Max parameters Switch to the Configuration Tab of the PCProbit and select the tab for the throttle you are using Primary Auxiliary We need to create a small window for both the Throttle Min and Throttle Max positions to ensure that the controller will read the throttle at rest and full throttle properly To do this we will use 5 of the throttle sweep as a window for Throttle Min and Throttle Max Calculate this by taking the value read at full throttle and subtract the value read at rest Multiply this by 0 05 Take the value read when the throttle was at rest and add the number that was just calculated to it Enter this value into the Throttle Min setting on the PCProbit Take the value read at full throttle and subtract the calculated number from it Enter this value into the Throttle Max setting on the PCProbit Note Apply the opposite for throttles that read from 5V at rest to OV at full throttle If a foot switch is used on the throttle make Throttle Min measurements from after the switch closes Next we will set the Deadband parameter for the controller For most throttles the Deadband voltage will be equal to Throttle Min The Deadband percentage should be set to 0 To create a Creep zone in the throttle adjust the Accel X and Accel Y values To provide the smoothest possible throttle set the Accel X and Accel Y values to provide a linear throttle response This
28. he efficiency of the system Setting the Armature Min parameter This parameter determines when the minimum field strength will be applied to the motor It should be set high enough that when driving on level ground with full weight on the vehicle the field current can drop to the minimum level Setting the Armature Mid parameter In most cases setting the Armature Mid value to the midpoint between Armature Min and Armature Max provides acceptable performance and drivability Make adjustments from here as necessary Navitas Technologies Ltd Page 47 TSX Separately Excited Motor Controllers Using the Datalogger to help tune the motor Caution Make sure you can perform the following tasks safely and that you have room to do so Setup the Datalogger as explained previously For the parameter selection select Armature Current and Field Current Start the Datalog then accelerate at full throttle When it feels that the vehicle is no longer accelerating release the throttle and come to a stop Stop the datalogger and select a variable to view The variables in the datalog are described by their registry number For a listing of registry variables in the controller look at the Print Parameter Map function on the Advanced screen of the PCProbit For our use here Registry number 208 is Armature Current and Registry number 206 is Field Current On the output of the Datalogger select one row of the table that has Registry number 20
29. i D Auxiliary Switch Auxillary Switch 1 Auxiliary Switeh2 Auxillary Switch 2 Auxiliary Switch 3 Auxiliary Switch 3 AUXILIARY SWITCH 1 settings Auxillary Switch 1 Function Select AUST Disabled Cutback 50 01 BA AUXI Disabled when disabled controller ignores this switch input Speed Limit 1 Input forces controller into reduced speed mode 1 when active Belly Switch temporarily forces controller into reverse direction for a brief period when activated Foot Switch when enabled the line contactor battery solenoid is activated by closing the foot switch Cutback of full speed utilized when Speed Limit Input is activated Navitas Technologies Ltd Page 23 TSX Separately Excited Motor Controllers AUXILIARY SWITCH 2 settings Auxiliary Switch 2 Function Select AL Disabled Cutback 50 01 FA AUX2 Disabled when disabled controller ignores this switch input Speed Limit 2 Input forces controller into reduced speed mode 2 when active Cutback percentage of full speed utilized when Speed Limit 2 Input is activated AUXILIARY SWITCH 3 settings Auxiliary Switch 3 Function Select AUS Disabled So Cuthback 50 01 A AUX3 Disabled when disabled controller ignores this switch input Speed Limit 3 Input forces controller into reduced speed mode 3 when active Cutback percentage of full speed utilized when Speed Limit 2 Input is activated Navitas Technologies
30. is value If you know the resistance of the field winding divide the nominal battery voltage by the known resistance and enter the result into the Field Max settings If the maximum field strength is not known it can be determined with some testing The characteristics of the motor will change with the motor temperature When the motor 1s cold it is possible to have higher field strength than when the motor is hot To set for the maximum torque possible set the field max when the motor is cold To set for the maximum constant torque set the field max when the motor is hot Caution Do not do the following procedure if the nominal battery voltage is higher than the rated motor voltage Damage to the motor could occur To determine the maximum field current by measurement set Field Min Field Mid and Field Max to SOA On the PCProbit select the Drive Status tab You will be monitoring the Field current sensor data Activate the field by selecting a direction and if necessary activating the foot switch it is not necessary to actually apply throttle The field current on the Drive Status tab should increment For peak torque make note of the current after 20 seconds For continuous torque make note of the current after 1 minute Turn off the key on the controller after making this measurement Enter the measured current into the Field Max both Forward and Reverse parameters Navitas Technologies Ltd Page 46 TSX Separately
31. l flode Mode ID stand Alone da Y Le Node ID set to Node 1 by default address used for communicating with the controller in Stand Alone mode it is recommended to leave as Node 1 Navitas Technologies Ltd Page 33 TSX Separately Excited Motor Controllers CAN in MASTER mode CAN Settings Slave IDs CAN Control lode Mode ID DualDifterential Mode Wurm of Slaves Slave 1 Clave 2 Slave 3 Slave 4 Slave 5 Slave 6 mm 6 Node ID the address of controller currently being programmed must be different than address of slave controller s Dual Differential Mode Dual mode where speed of Slave is controlled via Master controller Differential master and slave controllers react as an electronic differential with inputs from a single throttle and steer position sensor Num of Slaves indicates number of Slave controllers connected to network Slave IDs 1 through 6 each Slave controller must be assigned its own unique Node ID allows Master to know which Slave to talk to CAN in SLAVE mode CAN Control flode Mode ID Slave Master ID Slave Node ID address of Slave controller on network must be different than address of Master Master ID address of the Master on network Navitas Technologies Ltd Page 34 TSX Separately Excited Motor Controllers APPLYING CHANGES Once all desired parameters have been set into the PC Probit II software the user must APPLY CHANGES
32. ld the shift key down and use the down arrow key to highlight the remaining parameters If all parameters are to be logged simply click the double right arrow To remove parameters select the parameter s on the Logging list and click the single or double left arrow as required Click OK when the Logging list is complete This will open the STATUS LOGGING window Navitas Technologies Ltd Page 40 TSX Separately Excited Motor Controllers STATUS LOGGING window Status Logging METITA eiga val Param Description 0 000 Switch States U 000 Battery Voltage 206 0 000 Field Current 207 0 000 Field Voltage 208 0 000 Armature Current 209 0 000 Armature Voltage When the STATUS LOGGING window opens it will show all parameters selected in the SELECT STATUS REGS TO LOG window Loop Count indicates number of parameters that have been logged Time Stamp system clock value at time parameter was logged Faster Logging disables visual output of log results Start initiates logging Cancel halts logging When the START button is clicked an additional timer appears To stop the data logging click the STOP button The logging will stop and the VIEW LOGGED DATA window will open Navitas Technologies Ltd Page 41 VIEW LOGGED DATA window View Logged Data m ia E i E i m s m B lt W l 31 5 315 314 313 312
33. otor maximum motor current allowed in armature Regen maximum current to be pulled from armature during regen Peak Dir Change regen current must be less than this value for controller to switch from forward to reverse or vice versa Navitas Technologies Ltd Page 30 TSX Separately Excited Motor Controllers REVERSE CURRENT AMPS Reverse Current Amps Arm Mlin Field blin Arm tlic Field tid Arm Wax Field Wax Field Brake Regen Field Coast Regen KOK KL Lix Arm Min currents through armature of less than Arm Min will result in field currents of Field Min Field Min minimum field current applied to motor Arm Mid currents through armature of less than Arm Mid but greater than Arm Min will result in field current being interpolated between Field Min and Field Mid Field Mid allows shape of armature field map to be adjusted for best performance with motor Arm Max currents through armature of less than Arm Max and greater than Arm Mid will result in field current being interpolated between Field Mid and Field Max armature currents greater than Arm Max will result in Field Max Field Max maximum field current applied to motor Field Brake Regen when braking field is set to this current to provide regen braking Field Coast Regen not currently implemented FORWARD CURRENT AMPS All settings for FORWARD CURRENT AMPS are based on the same principals as REVERSE CURRENT AMPS except they ap
34. ply to the forward direction of the vehicle instead of the reverse direction Navitas Technologies Ltd Page 31 TSX Separately Excited Motor Controllers FIELD TO ARMATURE CURRENT MAPPING Field to Armature Current Mapping Zoom Field Currents Armature Current te ir ce a ie a L S ts D T m 500 400 200 QO 200 400 Armature Current Amps This chart graphically represents the armature and field current settings entered into the FORWARD CURRENT AMPS and REVERSE CURRENT AMPS areas Clicking on ZOOM enlarges the graph and provides more detail Labeled points on the graph correspond to specific values for FORWARD CURRENT AMPS and REVERSE CURRENT AMPS shown below each independent value window For most single motor applications no further parameters will need to be added under the CONFIGURATION tab If multiple controllers are connected via the CAN network continue on with the section on the CAN sub tab Otherwise skip ahead to the APPLYING CHANGES section Navitas Technologies Ltd Page 32 TSX Separately Excited Motor Controllers Parameters in the CAN sub tab PC Probit Il File Help Drive Status Configuration connect File Handling Advanced System Primary Throttle Auxiliary Throttle Digital Inputs Contactor Motor Control CAN CAN Settings CAN in STAND ALONE mode LAN settings CAN Contro
35. r installed a Navitas Technologies TSX motor controller before or require additional information please refer to the full user manual available from your Navitas distributor or at www navitastechnologies com Navitas Technologies Ltd Page TSX Separately Excited Motor Controllers CONTROLLER WIRING AND CONNECTIONS Mounting the Controller Position and align the controller in such a way as to allow sufficient access to battery and motor cables as well as low current control wiring The controller can be mounted horizontally vertically or at any angle necessary If possible keep the 2 diagnostic LEDs on the top of the cover visible While the controller is designed to meet IP 66 ingress standards it is always preferential to mount it in a position which prevents it from direct exposure to moisture or direct water spray DO NOT MOUNT THE CONTROLLER IN ANY POSITION WHERE IT MAY BECOME SUBMERGED IN WATER The mounting surface should be smooth flat and have any paint or other debris removed Using the supplied cut out drill and tap 4 holes 1 4 20 recommended into a suitable area on the vehicle Preferably the controller will be mounted on minimum 1 4 thick aluminum or steel Itis advisable to apply a very thin coating of silicone heat sink compound to the surface before mounting the controller When attaching the controller use either hex head bolts or bolts no larger than 1 4 7 16 head size to ensure tools can acce
36. rt Navitas Technologies Ltd Page 14 TSX Separately Excited Motor Controllers Next click on the CONNECT button to allow the software to begin communicating with the controller F Connect Finally click on LOAD ALL to upload the current parameters from the controller to the computer Load ALL Navitas Technologies Ltd Page 15 TSX Separately Excited Motor Controllers Configuring Controller Parameters Once the controller is connected to the computer and the parameters have been uploaded select the CONFIGURATION tab and move to the SYSTEM sub tab PC Probit Il File Help Drive status Configuration f Connect FileHandling Advanced System Primary Throttle Aualliary Throttle Digital Inputs Contactor MotorControl CAN system Voltage Brake Control In the SYSTEM VOLTAGE box enter the correct values and settings for the vehicle system Voltage Mominal Battery Over voltage Battery W Full Protection Pre Charge Battery Voltage Empty W Tas re 2 00 Nominal Battery V typical operating voltage of battery Battery Full V battery voltage with full charge lead acid batteries typically measure 2 14 volts per cell Pre Charge Voltage voltage level that must be present inside the controller before line contactor is allowed to pull in Battery Empty V battery voltage when discharged lead acid batteries typically measure 1 75 volts per c
37. rts out at Pull In Voltage and transitions to Hold Voltage until the corresponding activating signal 1s removed CONTACTOR SETUP can be broken down into the following parameters STEERING CONTACTOR Steering Contactor Trigger on Disabled Pull Iri Hold Run On Voltage Voltage Time oo Disabled when disabled steer contactor drive is not used Enabled activates steer contactor drive Trigger on Direction Input Selected energizes steer contactor when direction is selected SRO Input Active energizes steer contactor when SRO input is activated Pull In Voltage initial voltage applied when steer contactor is energized Hold Voltage continuous voltage applied to steer contactor Run On Time amount of time contactor will be held in after trigger signal is removed Navitas Technologies Ltd Page 26 LINE CONTACTOR Disabled Enabled Pull In Voltage Hold Voltage LIFT CONTACTOR Disabled Enabled Pull In Voltage Hold Voltage Navitas Technologies Ltd TSX Separately Excited Motor Controllers Line Contactor Enabled Pull in Hold Voltage Voltage when disabled line contactor drive is not used activates line contactor drive initial voltage applied when line contactor is energized continuous voltage applied to line contactor Lift Contactor Disabled Pull Iri Hald Voltage Voltage when disabled lift contactor drive 1s not used activates lift con
38. ss the head of the bolts for tightening Tighten the mounting bolts to a minimum of 72 inch pounds of torque Check to make sure the controller is flat to the mounting surface once tightened down Navitas Technologies Ltd Page 2 TSX Separately Excited Motor Controllers This page left blank intentionally Navitas Technologies Ltd Page 3 TSX Separately Excited Motor Controllers l 142 mm lt 128 5 mm gt m LTS q 2 TON 1 2 aD TSX 500 48 CUTOUT TEMPLATE Page 4 Navitas Technologies Ltd TSX Separately Excited Motor Controllers This page left blank intentionally Navitas Technologies Ltd Page 5 TSX Separately Excited Motor Controllers Low Current Connections The TSX 500 48 comes supplied with a low current control wire harness The drawing below shows the pin configuration for the Ampseal 23 pin I O connector gt Ooa AN VILE The pin functions are as shown in the chart below 2 inmt forwardenable white yellow 6 int speedlimit3 white purple 8 input battery positive pre charge orange 9 inw primary throttle white 14 15 16 17 18 line contactor driver 19 20 21 22 23 Note The TSX 500 48 is available in both positive logic and negative logic For positive logic controllers forward enable reverse enable brake SRO and speed limits 1 3 are activated by connecting them to ba
39. tactor drive initial voltage applied when lift contactor is energized continuous voltage applied to line contactor Page 27 TSX Separately Excited Motor Controllers AUXILIARY CONTACTOR Pull In Hold State Contactor Function Active On Voltage Voltage Aux 1 Disabled Aux Disabled when disabled aux 1 contactor drive is not used Enabled activates aux 1 contactor drive Status Indicator displays presence of controller fault via aux 1 drive circuit Active Low aux 1 drive circuit drops to hold voltage to indicate presence of fault Active High aux drive circuit changes from hold voltage to open circuit to indicate presence of fault BDI Indicator indicates controller is in battery discharge state Active Low aux 1 drive circuit drops to hold voltage to indicate BDI state Active High aux drive circuit changes from hold voltage to open circuit to indicate BDI state Brake Release energizes coil to release electric brakes Trip On Neutral to Stop Time de energizes brake coil after Neutral to Stop Time elapses SRO Open for Set Time de energizes brake coil after SRO Forgive Time elapses Error Code Flasher displays error codes via aux drive circuit by pulsing to Hold voltage level Back Up Alarm activates aux 1 drive circuit when reverse is selected Hour Meter Enable activates aux drive circuit when controller is driving motor Pull In Voltage voltage level applied to aux
40. ttery For negative logic controllers these are Navitas Technologies Ltd Page 6 TSX Separately Excited Motor Controllers activated by connecting them to battery Confirm whether your controller is positive or negative logic before completing low current control wiring connections The TSX 500 48 is also capable of operating on a CAN based network either alone or in a master slave configuration multiple controllers For information regarding CAN network connections refer to the full TSX 500 48 manual Programming of the TSX 500 48 controller is accomplished with the Navitas PC Probit II programming package via the 8 pin Ampseal connector and a Windows based computer The PC Probit II programming package contains a software CD serial cable and CAN to serial dongle which allows a computer to connect to the controller If programming is required please contact your local Navitas distributor to purchase a PC Probit II programming package The following drawings illustrate commonly used control wiring Specific wiring may vary depending on which TSX 500 48 features and throttle types are used Basic I O Wiring throttle not shown CONTROL BATTERY PACK FUSE 24 48VDC aoli LINE KEY SWITCH CONTACTOR TIPS TO MOTOR A1 AND AMPSEAL 23 PIN CONTROLLER B I O CONNECTOR PIN1 KEY INPUT PIN2 FORWARD ENABLE FORWARD SWITCH PIN3 REVERSE ENABLE REVERSE SWITCH PIN5 SRO INPUT SRO SWITCH PIN7 CONNECT TO B PIN8 CONNEC
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