The Leadshine EM556S driver is a next-generation digital controller for stepper motor. It ensures smooth movements at low speeds, optimum torque, low heating and low operating noise.

Its excellent performance, simple design and ease of configuration make the EM556S an ideal tool for many pitch and direction control applications (CNC machining, 3D printing, etc.).
 

• Features: This driver allows microstep operation to achieve high resolutions up to 25600 steps per rotation (and even up to 51200 steps per rotation via the EM-S ProTuner app).
  The SW11 to SW16 switches allow the adjustment or activation /deactivation of the various features.
  It is suitable for 6-wire bipolar or unipolar motors (half coil or full coil) of the NEMA 17, 23 and 24 series.
   
• Interfaces: The input voltage level on the pulse/direction inputs is directly adjustable via switches, which dispenses with the addition of resistors in the case of 24V signals.
  The connectors are detachable but should not be removed or connected when the power supply is plugged in due to the counter-electromotive force that can damage the driver.
  
  An RS232 interface allowing driver settings is available for advanced users. This configuration is done via the EM-S ProTuner application available for free download.
  The RS232 interface is accessible on a 4-pin connector thanks to the DMD Mini setting cable (not included). This DB9 port output cord requires a USB/RS232 converter.
   
• Power supply: The choice of power supply is essential. If the application requires a low speed, it is better to use a supply voltage close to the minimum possible, which decreases noise and heating.
  A high supply voltage will give a high speed but at the cost of more noise, heating and possible vibrations at low speeds.
   

Characteristics:

• Power supply: 20 to 50 Vdc (24 to 48 Vdc recommended)
• Max consumption: 5.6 A (depending on the motor)
• Input frequency: 0 to 200 KHz
• Current setting:
  via dip-switches: 1.8 A - 2.1 A - 2.7 A - 3.2 A - 3.8 A - 4.3 A - 4.9 A - 5.6 A
  - via application (necessary cord not included): from 0.5 to 5.6 A (resolution: 0.1 A)
• Micro-step mode:
  - via dip-switches: 200 to 25600 steps/turn
  - via application (cord needed not included): 200 to 51200 steps/turn (resolution: 200 steps)
• Logical intensity: 7 to 16 mA
• Duties:
  - anti-resonance system providing optimum torque
  - multi-stepping mode
  - configurable resolution in multi-step mode
  - automatic reduction of unladen consumption
  - suitable for unipolar and bipolar motors
  - supports PUL/DIR and CW/CCW modes
  - protection against overvoltages and overcurrents
  - "Alarm" output
  - TTL or 24 Vdc signal compatible inputs, adjustable via inverter (24 Vdc by default)
  
  

• NB: No protection against reversals of power polarity -> an inversion causes the destruction of the driver.
• Operating temperature: 0 to 70°C
• Service humidity: 40 to 95 %RH
• Dimensions: 118 x 75.5 x 34 mm
• Weight: 250 g