How to Use TB6600: Examples, Pinouts, and Specs

The TB6600 is a high-performance microstepping driver designed for bipolar stepper motors. It is capable of driving motors with a current rating of up to 4.5A, making it suitable for demanding applications. The driver features adjustable current control, microstepping capabilities, and built-in protections, ensuring smooth operation and precise positioning. These features make the TB6600 a popular choice for CNC machines, 3D printers, robotics, and other motion control systems.

• CNC machines for precise cutting and engraving
• 3D printers for accurate layer positioning
• Robotics for controlled motion
• Automated machinery and conveyor systems

The TB6600 driver is designed to handle a wide range of stepper motors and offers flexibility in configuration. Below are its key technical details:

The TB6600 driver has several input and output terminals for motor control and power connections. Below is the pin configuration:

1. Power Supply: Connect a DC power supply (9V to 42V) to the VCC and GND terminals. Ensure the power supply can provide sufficient current for the motor.
2. Motor Connection: Connect the stepper motor's coils to the A+, A-, B+, and B- terminals. Refer to the motor's datasheet to identify the correct coil pairs.
3. Controller Connection: Connect the PUL+, PUL-, DIR+, DIR-, ENA+, and ENA- terminals to the corresponding pins on your microcontroller or CNC controller.
4. Microstepping Configuration: Use the DIP switches on the TB6600 to set the desired microstepping mode and current limit. Refer to the TB6600 datasheet for DIP switch settings.

Below is an example of how to control a stepper motor using the TB6600 and an Arduino UNO:

• TB6600 PUL+ → Arduino Pin 2
• TB6600 PUL- → Arduino GND
• TB6600 DIR+ → Arduino Pin 3
• TB6600 DIR- → Arduino GND
• TB6600 ENA+ → Arduino Pin 4 (optional)
• TB6600 ENA- → Arduino GND
• Motor Coils → Connect to A+, A-, B+, B- as per motor datasheet
• Power Supply → Connect to VCC and GND

// Define TB6600 control pins
#define PUL_PIN 2  // Pulse pin
#define DIR_PIN 3  // Direction pin
#define ENA_PIN 4  // Enable pin (optional)

void setup() {
  // Set control pins as outputs
  pinMode(PUL_PIN, OUTPUT);
  pinMode(DIR_PIN, OUTPUT);
  pinMode(ENA_PIN, OUTPUT);

  // Enable the driver
  digitalWrite(ENA_PIN, LOW); // LOW to enable, HIGH to disable
}

void loop() {
  // Set motor direction
  digitalWrite(DIR_PIN, HIGH); // HIGH for one direction, LOW for the other

  // Generate step pulses
  for (int i = 0; i < 200; i++) { // 200 steps for one revolution (1.8°/step motor)
    digitalWrite(PUL_PIN, HIGH); // Pulse HIGH
    delayMicroseconds(500);      // Adjust for speed (500 µs = 1 kHz frequency)
    digitalWrite(PUL_PIN, LOW);  // Pulse LOW
    delayMicroseconds(500);      // Adjust for speed
  }

  delay(1000); // Wait 1 second before reversing direction

  // Reverse direction
  digitalWrite(DIR_PIN, LOW);
  for (int i = 0; i < 200; i++) {
    digitalWrite(PUL_PIN, HIGH);
    delayMicroseconds(500);
    digitalWrite(PUL_PIN, LOW);
    delayMicroseconds(500);
  }

  delay(1000); // Wait 1 second before repeating
}

• Use a power supply with sufficient current capacity to avoid voltage drops.
• Ensure proper heat dissipation for the TB6600 by mounting it on a heat sink or ensuring adequate airflow.
• Double-check wiring to avoid short circuits or incorrect connections.
• Use shielded cables for long signal wires to reduce noise interference.

1. Motor Not Moving:

   • Check power supply connections and ensure the voltage is within the specified range.
   • Verify that the stepper motor is correctly wired to the A+, A-, B+, and B- terminals.
   • Ensure the microcontroller is sending step and direction signals.

2. Motor Vibrates but Does Not Rotate:

   • Verify the coil connections of the stepper motor. Incorrect wiring can cause this issue.
   • Check the microstepping settings on the DIP switches.

3. Driver Overheating:

   • Ensure proper heat dissipation by using a heat sink or fan.
   • Reduce the current limit using the DIP switches if the motor does not require maximum current.

4. Inconsistent Motor Movement:

   • Check for noise or interference in the control signal wires.
   • Use shorter wires or shielded cables for signal connections.

Q: Can the TB6600 drive unipolar stepper motors?
A: No, the TB6600 is designed for bipolar stepper motors only.

Q: What is the maximum step pulse frequency supported?
A: The TB6600 supports step pulse frequencies up to 200 kHz.

Q: How do I set the current limit?
A: Use the DIP switches on the driver to configure the current limit. Refer to the TB6600 datasheet for the correct settings based on your motor's current rating.

Q: Can I use the TB6600 with a 12V power supply?
A: Yes, the TB6600 supports input voltages from 9V to 42V. Ensure your motor is compatible with 12V operation.

By following this documentation, you can effectively use the TB6600 driver for your stepper motor applications.