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EM556S - Advanced Digital Stepper Drive; Max 50 VDC / 5.6A; CE Certified; RoHS Compiant


  • Step & direction (PUL/DIR) or CW/CCW (double pulse) control
  • 20-50VDC supply voltage
  • 200 KHz max pulse input frequency
  • 5V / 24V control signal voltage setting by DIP switch, default is 24V
  • 16 micro step settings of 200-25,600 via DIP switches, or 200-51,200 via software (increase by 200)
  • 8 output current settings of 1.8-5.6A via DIP switches, or 0.5-5.6A via software
  • Configurable control command smoothing time to reduce motor vibration
  • Automatic idle current reduction to 50% or 90%
  • Convenient self-test for easy diagnosis
  • Automatic self-configuration to match wide-range NEMA 17, 23, and 24 stepper motors
  • Anti-Resonance for optimal torque, extra smooth motion, low motor heating and noise
  • Soft-start with no “jump” when powered on
  • Optically isolated inputs
  • Fault output and Brake output
  • Over-voltage and over-current protections
  • CE certified and RoHS compliant

Description Specifications Applications Downloads

The EM556S is a new digital stepper drive based on Leadshine’s widely implemented DM stepper drives (10 millions of units in field). While retaining features of simple design, easy setup, high precision and reliability, Leadshine has also upgraded it by adopting the latest stepper control technology and added additional advanced features for better torque (10-25%), quicker response time, control command smoothing, easy self-test, etc.

The EM556S is able to power 2 phase and 4 phase stepper motors smoothly with very low motor heating & noise. It can take 20-50VDC supply voltage and output 0.5 to 5.6A current. Its control type (step & direction or CW/CCW) and command smooth filtering time can be easily configured via DIP switches. Therefore, the EM556S is an ideal choice for many applications requiring simple step & direction or CW/CCW control of NEMA 17, 23, and 24 stepper motors.

EM556S Accessories
1.4.4-0409505-B3: 1.2-meter (3.9-foot) RS232 cable for tuning microsize digital drives with ProTuner
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