How to Use Integrated Step Driver: Examples, Pinouts, and Specs

The Integrated Step Driver (ISD04 10-40VDC 4A), manufactured by STEPPERONLINE, is a compact and efficient device designed to control stepper motors. It integrates a stepper motor driver and controller into a single unit, simplifying the design and reducing the space required in motor control systems. This driver provides precise control of the motor's phases, enabling accurate positioning and speed control.

• CNC machines and 3D printers
• Robotics and automation systems
• Conveyor belts and material handling
• Medical devices requiring precise motion control
• Surveillance systems with pan/tilt mechanisms

The following table outlines the key technical details of the ISD04 Integrated Step Driver:

The ISD04 Integrated Step Driver features the following pin configuration:

1. Power Supply: Connect a DC power supply (10-40 VDC) to the V+ and GND pins. Ensure the power supply can provide sufficient current for the motor and driver.
2. Motor Connection: Connect the stepper motor's phase wires to the A+, A-, B+, and B- terminals. Verify the motor's wiring to avoid incorrect connections.
3. Control Signals:
   • Connect the PUL+ and PUL- pins to the pulse signal source (e.g., a microcontroller or PLC).
   • Connect the DIR+ and DIR- pins to the direction signal source.
   • Optionally, connect the ENA+ and ENA- pins to an enable signal source. If unused, leave these pins unconnected.
4. Microstepping Configuration: Use the onboard DIP switches to set the desired microstepping resolution. Refer to the manufacturer's datasheet for the DIP switch settings.
5. Test the Setup: Power on the system and send pulse and direction signals to the driver. Observe the motor's movement to ensure proper operation.

• Current Setting: Adjust the current limit on the driver to match the stepper motor's rated current. This prevents overheating and ensures optimal performance.
• Signal Voltage Compatibility: Ensure the control signals are compatible with the driver's input voltage (3.3V or 5V logic).
• Cooling: Provide adequate ventilation or a heatsink to prevent the driver from overheating during prolonged operation.
• Wiring: Use shielded cables for control signals to minimize electromagnetic interference (EMI).

Below is an example of how to control the ISD04 Integrated Step Driver using an Arduino UNO:

// Define pin connections
const int pulsePin = 2; // Connect to PUL+ (PUL- to GND)
const int dirPin = 3;   // Connect to DIR+ (DIR- to GND)
const int enablePin = 4; // Connect to ENA+ (ENA- to GND)

void setup() {
  // Set pin modes
  pinMode(pulsePin, OUTPUT);
  pinMode(dirPin, OUTPUT);
  pinMode(enablePin, OUTPUT);

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

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

  // Generate pulses to move the motor
  for (int i = 0; i < 200; i++) { // 200 steps for one revolution (example)
    digitalWrite(pulsePin, HIGH);
    delayMicroseconds(500); // Adjust for speed control
    digitalWrite(pulsePin, LOW);
    delayMicroseconds(500);
  }

  delay(1000); // Wait before changing direction

  // Change direction
  digitalWrite(dirPin, LOW);

  // Generate pulses in the opposite direction
  for (int i = 0; i < 200; i++) {
    digitalWrite(pulsePin, HIGH);
    delayMicroseconds(500);
    digitalWrite(pulsePin, LOW);
    delayMicroseconds(500);
  }

  delay(1000); // Wait before repeating
}

1. Motor Not Moving:

   • Verify the power supply voltage and current are within the specified range.
   • Check the motor wiring for correct connections to the driver.
   • Ensure the pulse and direction signals are being sent correctly.

2. Overheating:

   • Reduce the current limit setting on the driver.
   • Improve ventilation or add a heatsink to the driver.

3. Erratic Motor Movement:

   • Check for loose or faulty wiring.
   • Use shielded cables for control signals to reduce EMI.
   • Verify the microstepping settings on the DIP switches.

4. Driver Not Enabling:

   • Ensure the enable signal (ENA+ and ENA-) is correctly connected or left unconnected if not used.
   • Check the logic level of the enable signal (LOW to enable).

• Can I use a 24V power supply with this driver? Yes, the driver supports a voltage range of 10-40 VDC, so 24V is within the acceptable range.

• What happens if I exceed the current limit? Exceeding the current limit may damage the driver or motor. Always set the current limit to match the motor's rated current.

• Can I use this driver with a NEMA 23 stepper motor? Yes, as long as the motor's voltage and current ratings are compatible with the driver's specifications.

• Is the driver compatible with 3.3V logic signals? Yes, the driver supports both 3.3V and 5V logic levels for control signals.