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SMD-4.2DIN ver.3

Stepper motor controller SMD-4.2DIN ver.3

Voltage 12 - 48 VDC
Max. current per phase 2.7 - 4.2 A
Microstepping 1/1 - 1/256
Control methods analog speed control,
pulse position control STEP/DIR
Size 116x100x23 mm

The stepper motor controller is designed to control motors with current per phase up to 4.2 A. This model provides 4 control methods: STEP/DIR positioning, speed or position 0..5 VDC analog control, constant speed rotation. The controller provides an excellent motor dynamics and high torque performance.

technical data

Technical data

High voltage level 5 - 12 VDC
Low voltage level 0 - 1 VDC
Input STEP resistance 3 kOhm, no less
Inputs DIR and ENABLE resistance 1 kOhm, no less
Input current of control
1.4 - 4 mA
Input current of control inputs DIR, EN 4 - 12 mA
SPD control signal voltage range 0.1 – 5 VDC
or 0.1 – 10 VDC
Input SPD resistance 15 kOhm, no less
Current of control input SPD 1 mA
Outputs «FAULT» parameters:  
Signal type opto-coupler output
Маx. voltage 48 VDC
Max. load current 50 mA
Resistance 15 Ohm, no more

Dimensions SMD-4.2DIN ver.3

Dimensions SMD-4.2DIN ver.3

Stepper motor control modes SMD-4.2DIN ver.3

SMD-4.2DIN ver.3 provides the next options for stepper motor control:

  • Pulse position control by external signals;
  • Analog speed control mode:
    • Voltage signal 0 – 5 VDC;
    • Voltage signal 0 – 10 VDC;
    • Built-in potentiometer;
    • External potentiometer;

Depending on the task, the controller can be used in one of the control modes - pulse position control for implementation of positioning tasks, speed control with an analog signal - for tasks of accurately maintaining and regulating speed.

The pulse position control mode is implemented with standard control signals STEP and DIR. In pulse position control mode, it is possible to invert the enable signal EN.

The analog speed control mode (by external or built-in potentiometer) or with analog voltage signal 0 – 5 V or 0 – 10 V provides start, stop, change of direction and smooth adjustment of the speed of rotation of the stepper motor without the possibility of precise positioning. The built-in generator is used as the controller that sets the pulses. The analog speed control mode is used in cases of simple movement (rotation) of a stepper motor or when the use of an external source of pulses "STEP" is unacceptable or impossible.