E Silnik krokowy

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The experiments are carried using training panels in panel frames.


  • Experiment set-up and wiring according to circuit diagrams
  • Working with closed-loop control systems
  • Optimisation of servo systems
  • Use of computer-controlled measuring interfaces

Stepper motors are a special variety of synchronous motor with a large number of pole pairs. The rotor follows the stator field in steps, the size of which is determined by the number of poles. With normal loading, the angular position of the rotor can be determined precisely. If overloaded, however, step losses arise and information about the current position of the rotor is lost. Stepper motors can be wired to operate in both half-step and full-step modes. Due to their discontinuous operation, stepper motors are the ideal drive systems for digital servo systems.

The equipment set incorporates student experiments which can be carried out in a laboratory safely using safety extra-low voltage. Experiment instructions are contained in a manual in either printed or digital form.

The target group is made up of commercial apprentices and students of power engineering and mechatronics. The course offers introductory experiments at an intermediate level for vocational schools and colleges.


  • Operation of a simple stepper motor: half-step, full-step
  • Design of a stepper motor: function, step angle
  • Control methods for bipolar and unipolar stepper motors
  • Control program for full and half steps using a unipolar stepper motor
  • Control logic with external control
  • Dynamic response
  • Time constants of the windings
  • Rate of rise in current as a function of the clocking frequency
  • Starting/stopping regions: start frequencies
  • Mechanical resonances: effect of load coupling
  • Response as a function of clock frequency

Components of equipment sets

728 55 Stepper motor 1
524 016S2 Profi-CASSY Starter 2 1
726 09   Panel frame T130, two-level 1
726 86   DC-Power Supply ± 15 V/3 A 1
726 962N Function generator 200 kHz net 1
500 59   Safety bridging plugs, black, set of 10 1
500 641   Safety connecting lead, 100 cm, red 1
500 644   Safety connecting lead, 100 cm, black 1
568 211   LIT: The Stepping Motor (in German) 1
568 212   * LIT: The Stepping Motor (in English) 1
additionally required: PC with Windows XP/Vista/7/8

Articles marked with * are not essential, we do however recommend them to carry out the experiment.




Firma produkuje zestawy edukacyjne do kształcenia akademickiego oraz szkolenia zawodowego z zakresu fizyki, chemii, biologii oraz elektroniki, elektrotechniki, automatyki, telekomunikacji, maszyn elektrycznych, odnawialnych źródeł energii i fotoniki, jest częścią grupy LD Didactic.