BAFANG MM G31.250 User Manual
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BAFANG MM G31.250 User Manual

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Max Drive System User Manual
Suzhou Bafang Electric Motor Science-Technology Co., Ltd.
www.szbaf.com
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  • Page 1 Max Drive System User Manual Suzhou Bafang Electric Motor Science-Technology Co., Ltd. www.szbaf.com...

  • Page 2: Table Of Contents

    CONENTS  ........................... 4 MPORTANT OTICE  ............................5 OR YOUR AFETY DRIVE UNIT .............................. 7 ............................7 DVANTAGES ......................... 7 COPE OF PPLICATION ............................7 AMING ......................8 ECHNICAL ARAMETERS ................... 8 RIVE TRUCTURE AND IMENSIONS SYSTEM INSTALLATION ........................10 ........................
  • Page 3 DISPLAY ..............................38 ................ 38 PECIFICATIONS AND ARAMETERS OF THE ISPLAY ......................38 PPEARANCE AND IMENSIONS ..................38 UNCTION VERVIEW AND EFINITIONS ............................38 UNCTION VERVIEW ......................39 TEMS TO BE HOWN ON THE ISPLAY .............................. 40 EFINITIONS ........................... 40 ORMAL PERATION ..........................

  • Page 4: Important Notice

    Important Notice  The Dealer Manual is to be used by professional e-bike mechanics。Users who have not received training on electric bicycle assembly shall not attempt to assemble parts and components by following the Dealer Manual.  If you doubt about any part of the manual, do not install the product. Please consult the local sales office or an electric bicycle dealer for help.

  • Page 5: For Your Safety

     When installing this product, be sure to follow the instructions given in the user's manual. It is recommended that you use only genuine Bafang parts at these times. The bicycle may suddenly fall over and serious injury may result if bolts and nuts are left loosened, or the product is damaged or improperly adjusted.
  • Page 6  Natural wear and tear due to normal use and aging is not within our scope of quality guarantee.  Please contact the seller for software updates (if any). The newest information on software will be available on the home page of Bafang website: www.szbaf.com...

  • Page 7: Drive Unit

    1. Drive Unit 1.1 Advantages  The controller ensures system safety with the fed-back torque signals and dual speed signals (pedal assist signals and external bicycle speed-detecting signals);  With a high starting torque and a maximum torque of no smaller than 80N.m, it is especially suitable for climbing;...

  • Page 8: Main Technical Parameters

    1.4 Main Technical Parameters Rated voltage (DCV) Rated power(W) ≥80％ Rated efficiency (％) Rated rotating speed(rpm) 100±5 ≥80 Maximum torque(N.m) Chain wheel 36T (recommended), 38T (optional), 42T (optional) Optional chain cover full chain cover / P-shaped chain cover Weight (Kg) Sensors pedal assist speed sensor, pedal assist torque sensor and bicycle wheel speed sensor and temperature sensor...

  • Page 10: System Installation

    System Installation 2.1 List of Tools to be Used Components Use of the Tools Tools Internal hexagonal Display To fix the screw M4 wrench To fix the chain wheel A special tool retaining ring To remove the chain wheel Plier for the retaining retaining ring ring To fasten M4 screws which...

  • Page 11: Component Names

    2.2 Component Names A. Drive unit B. Front chain wheel C. External speed- detecting sensor D. Battery E. Auxiliary keypad F. Display Display Installation ( DP C01.RS232.7 A. a rubber clamping ring (whose inner diameter is Φ22.2 or Φ25.4) Left and right display clamps for theΦ22.2 handlebar: Left clamp -...
  • Page 12 B. display clamp C. hexagon socket head cap screws M4*8 Insert the clamping ring(s) to each of the two display clamps and mount them onto the handlebar. Use an internal hexagonal wrench to fasten the left and right clamps onto the handlebar. Tool: Adjust the angle of the display so that you can easily see the display screen when riding.

  • Page 13: Auxiliary Keypad Installation

    2.4 Auxiliary Keypad Installation A. keypad clamp Open the auxiliary keypad and assemble it onto a position that is easy for operation. Adjust the angle of the auxiliary keypad to ensure that the keypad is easy to see seen during riding. (Applicable to the handlebar whose external diameter is Φ22.2mm) B.

  • Page 14: Battery Slideway Installation

    H. female connector at the display h. male connector at the EB- Match the female connector at the display with the male connector at the EB-BUS as shown in the picture above. 2.5 Battery Slideway Installation A. hexagon socket head cap screw (M5) Tool: Align the mounting holes of the carrier with the mounting holes of the...

  • Page 15: External Speed - Detecing Sensor Installation

    2.6 External Speed-detecting Sensor Installation A. external speed-detecting sensor B. magnetic unit C. spokes D. chain stay Before installing the speed sensor, please make sure the gap between the speed-detecting sensor and the magnetic unit is between 5 to 25 mm. A.
  • Page 16 Arrange the speed sensor and the magnetic unit as shown in the picture above. When installing the magnetic unit, make sure its center faces the center of the speed sensor’s induction zone. A. external speed-detecting sensor B. magnetic unit (PS01010702/2308040000001) C.

  • Page 17: Drive Unit Installation

    2.7 Drive Unit Installation A. battery cable B. taillight cable external speed- detecting sensor cable D. headlight cable E.EB-BUS Cables should be arranged in advance according to the bicycle type and the cabling system before installing the drive unit. A. mounting holes B.
  • Page 18 C.M6 nuts (1401080000101) Insert, from the right, special M6 nuts into the mounting holes in the bicycle frame and the drive unit. D.M6 bolts (1401080000099) Tool: Insert, from the left, the M6 bolts into the bicycle frame so that they will come to contact with the nuts.
  • Page 19 direction as show by the arrows in the picture above) to release the female buckles on the upper cover. Push the upper cover in the direction of moving towards Buckle 3 to fully open the upper cover. C. cabling layout (2307070000001) D.
  • Page 20 The picture above shows how the drive unit looks like when the cables are re-arranged with the help of the two cable clips. Please be noted that all cables must thread through the cable clips after going out of the cabling box. A.
  • Page 21 C. screw holes on the drive unit’s cover D. end cover on the right E. cable gatherers 1401150100005 cross head screw assembly M3*8 (1401020000127) Figure 1 Tool: Figure 2 Make sure that the cover's bottom is fastened onto the drive unit's bottom with screws after the cover's upper part buckles into the slot (see Figure 1).
  • Page 22 Figure 3 Figure 4  Figures above show how the drive unit looks like when the drive unit cover has been fixed onto it. Brake cables and gear cables can either be arranged in the channel at the bottom of the drive unit (see Figure 3 where cable gatherers are provided) or within the inner space of the frame adapter (see Figure 4 where no cable gatherers are provided).

  • Page 23: System Cabling

    System Cabling 3.1 Link the Battery Cable to the Drive Unit A. female connector for communication cables at the battery a. male connector for the communication cables at the drive unit B. female connector for the positive cable at the battery b.

  • Page 24: Link The Eb-Bus To The Drive Unit

    3.3 Link the EB-BUS to the Drive Unit D. male connector at the EB-BUS 2105020000099 d. female connector for the EB-BUS at the drive unit Link the EB-BUS cable to the EB-BUS connector at the drive unit. 3.4 Link the Headlight Cable to the Drive Unit F.

  • Page 25: Installation Of The Front Chainwheel And The Chain Cover

    Installation of the Front Chainwheel and the Chain Cover 4.1 Installation of the Chainwheel (without a chain cover) A. chain wheel B. retaining ring 1401010000026 Thread the spline shaft through the chain wheel holder with spline teeth engaged with spline holes. B.

  • Page 26: Chain Cover Installation (Optional)

    Chain Line: 45mm integratable chain wheel guard Preferably 36-38T (1325020000002) Applicable to a city bike which is equipped with internal gearshift system but not a full chain cover. integratable chain Chain Line: 49mm wheel guard Preferably 36-38T (1325020000001) Applicable to a city or mountain bike with an external gearshift...
  • Page 27 full chain cover B. binder plate for full chain cover (1401150100004) C. cross recessed pan head screw (1401020000111) Tool: Open the full chain cover and adjust it by following the instruction book. Make sure the outer wall of the full chain cover stick close to the boss on the outer side of the drive unit.
  • Page 28 D. chain wheel bushing block E. chain wheel 1325020000001 Install the chain wheel following the installation method. Chain Line: 48mm Preferably 36-38T Applicable to a city bike which is equipped with an internal gearshift system and a full chain cover. Refer to the chain cover instruction book and install the chain cover after the chain wheel has been installed.
  • Page 29  Note: Not all full chain covers are applicable to the Max drive unit. The full chain cover has to be a right one.  P-shaped Chain Cover Installation p-shaped chain cover holder (1401220200003) B. cross recessed pan head screw M4 (1401020000111) Tool: Adjust the position of the p-shaped chain cover holder and fasten it onto...
  • Page 30 Tool: Install the chain wheel onto the spline shaft. D. cross recessed pan head screw M5 E. p-shaped chain cover The figure above shows how a p-shaped chain cover is mounted onto the drive unit.

  • Page 31: Crank Installation

    The figure above shows a bike frame, onto which both the p-shaped chain cover and the drive unit are mouned.  Note: Not all p-shaped chain covers match the Max drive unit. Only a right p-shaped chain cover can be used. 4.3 Crank Installation ...
  • Page 32  Installation of cranks onto a bottom bracket where no chain cover is mounted A． right straight crank (1327010000001 ) left straight crank (1327020000001) B. crank mounting screw M8 (1401020000109 ) Tool: Fasten the right crank onto the bottom bracket on the right with a socket head cap screw M8.

  • Page 33: Battery

    Battery Precautions  If any liquid leaking from the battery gets into your eyes, immediately wash the affected area thoroughly with clean water such as tap water without rubbing your eyes, and seek medical advice immediately. If this is not done, the battery liquid may damage your eyes. ...
  • Page 34 Danger  Do not deform, modify, disassemble or apply solder directly to the battery. Doing so may cause leakage, overheating, bursting, or ignition of the battery.  Do not leave the battery near sources of heat such as heaters. Do not heat the battery or throw it into a fire.

  • Page 35: Use The Battery Properly

    Use the Battery Properly The battery can always be charged at any time no matter how much power is left. However, in the following cases, you should have the battery fully charged. Make sure to use the specified charger to charge the battery. ...

  • Page 36: Battery Health Indication

    Battery Capacity Display Battery Level ●●●●● < 10% ○●●●● 11~30 % ○○●●● 31~50 % ○○○●● 51~70 % ○○○○● 71~90 % ○○○○○ 91~100 % ○Light on ●Light off 5.4 Battery Health Indication  Press the battery level display switch for a second to check how healthy the battery is: Battery Health Indication Battery Health Condition...
  • Page 37 A. battery pack lock B. battery To ensure system security, insert the battery pack from the tail of the carrier onto the slideway. Make sure the battery is pushed to the right position on the slideway. Note: Please make sure the battery pack is locked to prevent it from dropping off.

  • Page 38: Display

    Display 6.1 Specifications and Parameters of the Display  36V/48V Power Supply;  Rated Current: 10mA  Maximum Operating Current: 30mA  Power-off Leakage Current: <1uA  Operating Current Supplied to the Controller: 50mA  Operation Temperature: -18 ~ 60 ℃ ...

  • Page 39: Items To Be Shown On The Display

     Intelligent battery level indication: with an optimization algorithm, a stable display of the battery level is ensured, and the problem of fluctuant battery level indication common with an average display is avoided.  Automatic light-sensitive headlight/taillight: as the outside light changes, the headlight and taillight will be automatically turned on/ off.

  • Page 40: Key Definitions

    customized.  : only active when the headlight and backlight are on. Headlight indication  Fault prompt: the symbol will be displayed when a fault is detected.  Maintenance warning (inactive by default): the symbol is displayed when there is a need for maintenance (the riding distance or the number of battery charge/discharge cycles exceeds the set value) ...

  • Page 41: Distance Mode And Speed Mode Switch

    Assist Mode Selection Interface Distance Mode and Speed Mode Switch Press the "mode" key to switch distance/speed display information, giving a display of single-trip distance (TRIP km), accumulated distance (TOTAL km), maximum riding speed (MAXS km/h) and average riding speed (AVG km/h) sequentially. Mode Switch Interface Headlight/ Backlight Switch After pressing and holding the "headlight"...

  • Page 42: Walk Assistance Mode

    environment, the backlight/ headlight will be automatically turned on. But if the backlight/ headlight is then manually turned off, they have to be manually turned on afterwards). Headlight/Backlight On/off Interface * There are 5 levels of backlight brightness for selection and the user can set the value as needed. Walk Assistance Mode After pressing and holding the “down”...

  • Page 43: Parameter Setting

    Battery Level Indication Table for Battery Level Check: Number of Electric Quantity Number of Electric Quantity Number of Electric Quantity Segments in Percentage Segments in Percentage Segments in Percentage ≥90% 50%≤C<60% 15%≤C<25% 80%≤C<90% 45%≤C<50% 5%≤C<15% 70%≤C<80% 35%≤C<45% border C<5% blinking 60%≤C<70% 25%≤C<35% 6.5 Parameter Setting...

  • Page 44: Data Reset

    Enter the Parameter Setting Interface In the parameter setting state, when the parameter to be set begins to flash, press the "up" or "down" key to adjust the parameter value. Press the "mode" key to switch among the to-be-set parameters. Press the "mode"...

  • Page 45: Light Sensitivity

    Light Sensitivity: hen the speed field displays bL0, press the “up” or “down” key to display a figure between 0 to 5. 0 represents the shutdown of light-sensing function. As the figure increases, light sensitivity gradually increases. After this setting, press the "mode" key for shorter than 0.3 seconds to enter the setting interface of backlight brightness.

  • Page 46: Maintenance Warning (Inactive By Default)

    Maintenance Warning (inactive by default): When the speed field displays nnA, press the up or down to display 0 or 1. 0 disables the maintenance warning function while 1 enables the maintenance warning function. After this setting, press the "mode" key for shorter than 0.3 seconds to enter the setting interface of password input.

  • Page 47: Speed Limit Change

    entries. The password is in four digits and the default password is "0512". Press the “mode” key to confirm the setting. If the set password is wrong, the system automatically returns to the previous interface. If the set password is correct, the system will enter <wheel diameter selection>. Wheel Diameter Selection: When the speed position displays Wd, press the “up”...
  • Page 48 the “mode” key for shorter than 0.3 seconds to set the other communication items in sequence. After all these settings, double press the “mode” key for shorter than 0.3 seconds to exit the interface of battery communication settings.  The following information will not be displayed unless communication has been established between the battery and the controller.

  • Page 49: Error Code Definitions

    ……… ……… voltage of the nth cell 6.6 Error Code Definitions The MAX-C966 display can give warnings on bicycle faults. When a fault is detected, the icon will be displayed on the LCD screen, and there will be an error code "n" in the speed display field. Definitions of error codes are listed in the table below: Error Code Error Description...

  • Page 50: Fault Alert Interface

    Fault Alert Interface...

  • Page 51: List Of Materials

    7. List of Materials Model Unit Name Material No. Quantity Specification Dsiplay Unit left 231602040001 display Φ22.2 rubber clamp Φ22.2 clamping ring right (optional) 231602040001 display clamp DP C01.RS2 left 231602040000 Display 32.7 display Φ25.4 rubber Accessorie clamp Φ25.4 clamping ring right (optional) 231602040000...
  • Page 52 Tools M4 cross recessed pan head 140102000011 M4*8 screw 132502000000 Chain wheel assembly A CL-49mm/38T Chain wheel assembly B Chain 132502000000 CL-45mm/38T (optional) Wheel Chain wheel assembly C 132502000000 CL-48mm/38T (optional) Right straight crank with a 132704000000 170mm cover Right straight crank 132701000000 170mm (optional)

  • Page 53: After-Sales And Warranty Policy

    Suzhou Bafang Motor Science-Technology Co., Ltd (hereinafter referred to as the "Bafang Motor") guarantees: During the warranty period, customers enjoy warranty service from Bafang for products bought from Bafang as long as the products are within the warranty period and the issues are indeed quality issues concerning material and workmanship.

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Dp c01.rs2 32.7Max drive system

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