1. Introduction
The Sabvoton sine wave controller is designed to drive DC brushless motors, commonly applied in high-power electric scooters, electric bicycles, and similar vehicles. The SVMC-M series controllers, including the SVMC7260-APT V2, operate with a TFT display to provide high efficiency, reduced noise, and lower energy consumption, enhancing the control and comfort of electric vehicles. The user-friendly interface allows for easy parameter setting, testing, and diagnostic information retrieval.
2. Features and Specifications
2.1 General Functions
- Default Functions: Hall (with KTY83-122 temp sensor), Throttle, PAS, Alarm, Speed Limit, Low Brake, TFT Display, Phase wires, Power wires.
- Optional Functions (for mass order): 0-5V e-brake, high brake, reverse, cruise, CAN.
- Accessories: USB cable, Bluetooth adapter, TFT display, wheel motor set.
2.2 Key Features
- FOC sine-wave controller for BLDC or PMSM.
- Automatic electric angle matching for optimal performance (within 3 minutes for first-time use).
- Minimizes torque pulsation, ensuring quiet and smooth operation.
- Precise current ring for accurate torque input, especially during vehicle startup and climbing.
- Efficient operation, reducing heat and extending mileage.
- Built-in protections: block, over-current, over-heat, over-voltage, ensuring system and driver safety.
- Status and fault intelligence management with LED indicators for easy diagnosis and repair.
- Convenient external interfaces: reversing, cruise, EBS, anti-theft.
- Parameters configurable via computer or mobile phone.
- CAN bus optional for meter or BMS applications.
2.3 Controller Specifications (SVMC7260-APT V2)
The SVMC7260-APT V2 controller is designed with APT communication protocol, compatible only with APT protocol displays like the 750C/UKC1.
- Model: SVMC7260-APT V2
- Available Rated Battery Voltage: 36V/48V/60V/72V
- Peak Battery Voltage: 95V
- Available Motor Power: 800W - 2KW
- Peak Phase Current: 165A
- Peak DC Current: 60A
- Working Communication: Hall Sensor
- Size: 241mm * 120mm * 65mm
- Weight: 1.75 kgs
- Throttle Working Voltage: 0V - 5V
- Mosfets Detail: 18 FET
- Case Material/Color: Aluminum /Gray
- Controller Design: Sine Wave Brushless DC
- Support: Programmable by PC & Phone
2.4 750C Display Specifications
Core Data
- Screen: TFT Dot Matrix TFT
- Display Type: Dot Matrix TFT
- Nominal Voltage: 24/36/48/60V (Max. 100V)
- Support Modes: 0-3/0-5/0-9
Mounting Parameters
- Communication: CAN BUS/UART
- Dimensions: 110/68/17mm
- Handlebar for Holding: Ø22.2/31.8mm
Display Information
The display provides information such as Current Speed, Maximum Speed, Average Speed, Duration Single Trip, Distance Single Trip, Total Distance, Reset Distance S.T., Battery Level, Error Code Display, Walk Boost, USB Charging Port, Clock, Light Sensor, and Outdoor Temperature.
Tests & Certifications
- IP Code: IP65
- Certifications: CE/EN15194 RoHS
2.5 Compatible Sabvoton Controller Models
The SVMC7260-APT V2 controller is part of a series that includes models such as SVMC7245-M, SVMC7280-M, SVMC72100-M, SVMC72150-M, and SVMC72200-M, each with varying Mosfet counts, sizes, rated voltages, DC currents, phase currents, and matched motor power ranges.
3. Setup
3.1 Mounting the Controller
The controller can be mounted in any position, ideally in a clean and dry location, protected from water and contaminants. For optimal heat dissipation and full rated output power, fasten the controller to a clean, flat metal surface using four screws. Applying silicon grease or other thermal conductive material can enhance thermal performance. Proper heat sinking and airflow are crucial.
The SVMC7260-M V2 controller has dimensions of 241mm x 120mm x 65mm.
3.2 Connections
The wiring diagram illustrates various connections including:
- Hall Plug: Connects to motor Hall sensors (five wires: Hall positive, Hall negative, three Hall signal wires). Match colors with motor Hall.
- USB Cable: For PC communication.
- PAS (Pedal Assist System): For pedal assist functionality.
- Low Brake: Activates e-brake by grounding.
- Throttle: Connects to 0-5V throttle.
- Alarm: For security system.
- Speed Limit: For speed control.
- Display Wire and Ignition: Connects to the display and ignition.
- Reverse: Activates reverse function by grounding.
- Communicate Plug: Connects to TFT Display or PC/Phone for communication.
- Power Wires: D- (Battery-), D+ (Battery+).
- Motor Phase Wires: U (Green), V (Blue), W (Yellow).
3.3 Installation Check List and Cautions
Before operating the vehicle, perform the following checks:
- Ensure the vehicle's drive wheels are off the ground.
- Do not stand directly in front of or behind the vehicle.
- Ensure the PWR switch and brake are off.
- Use well-insulated tools.
- Connect positive and negative poles correctly (B+ is positive, B- is negative).
- Ensure phase lines (UVW) are connected correctly (yellow, green, blue). All binding posts require insulation.
- Adjust controller parameters according to motor configuration and confirm phase/Hall wire settings.
- Connect E-lock and brake H wires to positive, and other function wires (low brake, reverse, cruise, three speed) to negative. Incorrect connections can damage the controller.
- Twist throttle lightly after installation to avoid using EBS function.
- When disassembling, close the battery air switch first, then open the e-lock to discharge before disconnecting the controller. Do not short positive and negative poles to discharge.
The controller installation must consider heat dissipation and ventilation to prevent water spatter. Always check the wiring diagram before connecting. The power switch and main contactor must be off during connection. The read LED should be always on when powered.
3.4 Easy Damage Conditions for Controller
The controller can be easily damaged under the following conditions:
- Wrong connection of battery positive and negative poles.
- Phase wires touching battery positive or negative poles.
- Wrong connection of Hall wire positive and negative poles between controller and motor.
- Water ingress into the controller.
- Controller falling from a height.
- Metal part of USB cable contacting high voltage.
- Torque of electric drive less than 10N, causing binding post fall-off or bolt breakage.
- Motor's insulating layer of phase lines peeling off due to aging, causing phase line short circuit.
- Incorrect function wire connections, damaging CPU and storage components.
Always check the manuals and using guide before using the Sabvoton controller.
3.5 Software Installation
The configuration program allows users to set parameters for optimal performance. The default parameters are not suitable for all applications. Ensure proper parameter settings before testing to avoid danger. The PC software is compatible with XP, Win 7, Win 8, Win10, but not Mac OS. The Android App is preferred for mobile programming.
Download the manuals and software from the official website: http://www.mqcon.com/menu/downloads.html
- Download wiring diagram, manuals, and software.
- Read the manual carefully.
- Install software and USB driver.
- Connect wiring according to manuals.
- Adjust controller parameters.
- Test in the vehicle.
For software installation:
- Check your computer system type (32-bit or 64-bit) to install the correct USB driver version.
- Open the software for installation.
4. Operating
4.1 Communication with PC and Debugging
After successful communication between the PC and controller, the system status will show as running, allowing you to set parameters. The main interface displays the controller's real status and error list, which cannot be edited directly.
For controllers made after January 15, 2016, the controller does not need to be powered on by battery when adjusting parameters. Simply connect the controller to the computer directly. If the controller/motor has a temperature sensor, connect the motor Hall plug to the controller, then connect the controller to the computer.
Caution: Ensure all connections are correct before powering on. Only adjust controller parameters in PC (not matching with motor). Do not ride your vehicle with the USB cable connected to the controller.
4.2 Parameter Settings
Any parameter modification must be confirmed by clicking 'OK' to be saved. To permanently save settings, execute 'parameter store' in SET-DEBUG after all modifications.
Basic Parameters
| Parameter | Description |
|---|---|
| DC current limited volt | Sets the voltage at which the DC current will be limited. E.g., if set to 62V, the DC current is limited when the battery voltage reaches 62V. |
| Lack volt | Controller stops working if battery voltage falls below this setting. Typically 60V for 72V battery, 50V for 60V battery, 42V for 48V battery. |
| Over volt | Controller stops working if battery voltage exceeds this setting. Typically 95V for 48V, 60V, or 72V batteries. |
| Rated DC current | No need to change, default is fine. Limits max DC input current based on controller type (e.g., 60A for SVMC7260). |
| Limit DC current | If set to 60A, when battery voltage equals 'DC current limited volt', the controller limits DC current to 60A. |
| Rated phase current | Determines continuous load endurance based on controller type (e.g., 150A for SVMC72150, 60A for SVMC7260). |
| Max phase current | Determines max output torque when throttle is at max position, based on controller type (e.g., 350A for SVMC72150, 175A for SVMC7260). |
| Protected phase current | Controller stops running if real phase current exceeds this setting, based on controller type (e.g., 450A for SVMC72150, 225A for SVMC7260). |
Temperature Parameters
| Parameter | Description |
|---|---|
| Unwork temperature | Controller stops running if temperature exceeds this value. Recommended: ~90°C (max 100°C). |
| Rework temperature | Controller resumes operation in limit current mode when temperature drops below this value after protection. Recommended: ~80°C. |
| Limited current temperature | Controller limits current output and motor torque if temperature exceeds this value. Recommended: ~70°C. |
Function Parameters
| Parameter | Description |
|---|---|
| General brake disable or enable | Enables/disables general brake (closes PWM output, motor slows down). Cannot be used with electric brake simultaneously. |
| Electric brake disable or enable | Enables/disables electric brake (motor charges battery and slows down). Cannot be used with general brake simultaneously. |
| Boost/3 spd | Sets speed mode if controller runs in limit speed mode. |
| Flux weakening enable or disable | Disabling reduces max speed by 10-15% but extends mileage. Enabling improves max speed and dissipative current. |
| Reverse speed limit | Limits speed in reverse mode (0-100%). Does not limit reverse torque. |
| Flux weaken current | Adjusts max speed with economic dissipative current. Below 50 improves speed economically; above 50 consumes more current for speed. Max 80A. |
| Electric brake ph current | Sets e-brake strength (0A-max phase current). Higher value means stronger brake effect. Recommended: ~50A. |
| Slide recharge | Enables/disables motor prevention when releasing throttle. |
| Slide recharge ph current | Sets strength of motor prevention when regenerative is enabled (0A-max phase current). Recommended: ~50A. |
| Slide recharge speed | Motor prevention speed when regenerative is enabled. Motor prevents if speed exceeds this value. Recommended: 10 (1-1000rpm). |
For 3 speed connector, black wire is ground.
Throttle Parameters
| Parameter | Description |
|---|---|
| Throttle min volt | Inspecting voltage when throttle is at '0' position. Should be 0.3-0.5V higher than the actual throttle value when released. |
| Throttle max volt | Inspecting voltage when throttle is fully twisted. Should be 0.3-0.5V lower than the actual throttle value at max position. |
| Accelerate time | Determines throttle response time during acceleration. Smaller value means faster acceleration. |
| Decelerate time | Determines throttle response time during deceleration. Smaller value means faster deceleration. |
| Throttle mid volt | Value range: 2.0-2.5V. |
| Throttle mid current | Distributes output phase current command. Higher mid current means bigger output torque in first half throttle span. Value range: 1/3-2/3 of max phase current. |
Motor Parameters
| Parameter | Description |
|---|---|
| Motor direction | Changes motor spin direction (0 to 1 or 1 to 0) after Hall matching. |
| Motor pn | Number of pole pairs (e.g., 20 for a 40-magnet motor). Confirmed with motor supplier. |
| Speed limit mode select | Selects speed limit mode: Intern set (max speed limited by 'motor limit speed set'), Extern set (if external speed limit switch is valid), No limit (speed limited by 3-speed mode). |
| Intern speed | Limits max speed to a percentage of original max speed (e.g., 50% means 50% of original max speed). |
| Extern limit | Enables speed limiting function via a cable connected to ground. |
| Low speed set | Limits low speed in 3-speed mode. |
| Middle speed set | Limits middle speed in 3-speed mode. |
4.3 Hall Angle Test
This test is crucial for new brand motors. Before testing, the motor must be without any load, and the battery must be powered on.
- Set 'Test given current' (10-30A, typically 15A) in DEBUG tab.
- Select 'HALL angle test' in Control mode and click OK.
- Enable Hall angle test and click OK.
- The motor will spin slowly. Once matching is complete, the main interface will show the result (1-6). If successful, it indicates '2: test ok'. The Hall angle will update in the DEBUG page. Click OK, then 'parameter store' to YES, and click OK.
- After matching, shut off and power on the controller. Check the matching angle. If updated, slowly run the motor with throttle.
Cautions for Hall Angle Test:
- If angle test fails (type 4), exchange any two phase wires and retest.
- If angle test fails (type 3), check motor-controller connection and change 'Test given current'.
- If the motor reverses, exchange any two phase wires or set 'Type 1' in motor direction input field.
4.4 Bluetooth Programmable
A Bluetooth adapter can be used to connect the controller to an Android phone for programming. This eliminates the need for a USB converter. Bluetooth programming is currently only suitable for Android systems. The controller user program can be downloaded from the website.
5. Maintenance
The controller contains no user-serviceable parts. Attempting to open the controller will void the warranty. Regular exterior cleaning is recommended. When working with any battery-powered vehicle, always observe proper safety precautions, including wearing eye protection and using insulated tools.
5.1 Cleaning
Although the controller requires minimal maintenance, periodic cleaning is recommended:
- Disconnect power by disconnecting the battery, starting with the positive terminal.
- Discharge the capacitors in the controller by connecting a load (e.g., a contactor coil or horn) across the B+ and B- terminals.
- Remove any dirt or corrosion from the bus bar area by wiping with a moist rag. Ensure the controller is dry before reconnecting the battery.
- Ensure connections to the bus bars are tight, using two well-insulated wrenches to avoid physical stress.
6. Troubleshooting: Tablet of Error Codes
The following table outlines common error codes, their descriptions, and recommended measurements or actions for troubleshooting.
| Flicker | Fault | Description | Measurement/Action |
|---|---|---|---|
| 1 | hardware over current | Hardware failures caused by over current. | Restore default settings, turn off power, reset parameters. If fault persists, controller is damaged. |
| 2 | overvoltage | Battery voltage exceeds highest working voltage. | Adjust battery voltage setting. |
| 3 | undervoltage | Battery voltage is lower than lowest working voltage. | Adjust battery voltage setting. |
| 5 | electric motor overtemp | Motor temperature exceeds set value. | Check motor temperature sensor connection. |
| 6 | controller overtemp | Controller temperature exceeds set value. | Controller temperature is too high; improve heat dissipation. |
| 8 | Instantaneous overcurrent | Phase current instantly exceeds protect phase current. | Check current ratio settings; higher protection phase current/lower maximum working phase current. |
| 9 | overload | Phase current of controller is higher than set value. | Turn off power, then open and readjust parameters. |
| 11 | save error | Error saving data. | Turn off power, then open and readjust parameters. |
| 12 | hall test fault | Motor controller Hall fault. | Check controller Hall and motor Hall connections. |
| 13 | hall fault | Motor Hall fault. | Check controller Hall and motor Hall connections. |
| 18 | over speed | ||
| 20 | block protection | ||
| 21 | initialization error | Reset can eliminate the error. | |
| 25 | power up no finished | Busbar voltage lower than undervoltage settings. | Adjust undervoltage value. |
| 26 | brake | Brake state. | |
| 27 | anti-theft | Anti-theft state. | |
| 28 | backup | Backup state. | |
| 30 | runaway protection | Handle's voltage is abnormal. | Adjust voltage value of controller settings, or change handle. |
7. User Tips
- Compatibility: This controller uses APT communication protocol and is only compatible with APT protocol displays like the 750C/UKC1. Ensure your display matches this protocol.
- Wiring: Most functional interfaces require modification rather than being plug-and-play. Carefully check the function line on your original vehicle and the speedometer's communication signal before making connections.
- Parameter Adjustment: The default parameters are not suitable for all applications. Always adjust parameters according to your specific motor configuration and vehicle setup.
- Warranty: There is no warranty for man-made damage. If you are not familiar with electric kit assembly, consider seeking professional assistance or making a prudent choice before purchase.
8. Warranty and Support
We offer a 1-year warranty for motors and controllers. The buyer is responsible for return shipping costs for repairs or replacements. The warranty does not cover man-made damage or issues arising from incorrect installation or usage not following the instructions.
For further assistance, you can refer to the comprehensive user manual PDF available at: User manual (PDF)
Contact Information
Company: MQCON Science and Technology Co., Ltd.
Address: No.27, Xihong Road, Meicun Town, New Wu District, Wuxi City, Jiangsu Province, P.R.China
Post Code: 214028
Homepage: http://www.mqcon.com/
Download: http://www.mqcon.com/list/?classid=4
