EM542S Leadshine Digital
20 ... 50 VDC 0.5 ... 4.2 A

Features:

• Anti-Resonance for optimal torque, extra smooth motion, low motor heating and noise
• Supply voltage +20 ... +50 VDC
• Eight output current settings of 1.0 ... 4.2 A via DIP switches, or 0.5 ... 4.2 A via software (increase of 0.1 A)
• Idle current reduction to 50 % or 90 % selection via SW4 to reduce motor heat
• Auto-tuning to match wide-range NEMA 17, 23, 24 stepper motors
• Step & direction (PUL/ DIR) or CW/ CCW (double pulse) control
• Pulse input frequency up to 200 kHz (500 kHz optional)
• Configurable control command smoothing for reducing motor vibration
• Microstep resolution of 16 setting of 200 ... 25,600 via DIP switches, or 200 ... 51,200 via software (increments of 200)
• Convenient self-test for easy diagnosis
• Smooth motor start-up without lump
• Optically isolated inputs with 5 V or 24 V
• Fault and motor brake command output signal
• Over-voltage, over-current and motor cable error protections 

Product Description:
The EM542S is a new versatile, digital stepper drive based on Leadshine's widely implemented DM stepper drives (10 millions + units in the 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 EM542S is able to power 2 phase and 4 phase stepper motors smoothly with very low motor heating & noise. It can take +20 up to +50 VDC supply voltage and output 0.5 to 4.2 A current. All the micro step and output current configurations can be easily done via built in DIP switches. Its control type (step & direction or CW/ CCW) and command smooth filtering can also be configured via DIP switches. Therefore, the EM542S is an ideal choice for many applications requiring simple step & direction or CW/ CCW control of NEMA 17, NEMA 23 and NEMA 24 stepper motors.