EM422S Digital Stepper Drive User Manual
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1. Introduction
The EM422S 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 EM422S is able to power 2 phase (1.8°) and 4 phase (0.9°) stepper motors smoothly with very low motor heating
& noise. It can take 18-36VDC supply voltage and output 0.3 to 2.2A 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 EM422S is an ideal choice for
many applications requiring simple step & direction or CW/CCW control of NEMA 8, 11, 14 and 17 stepper motors.
1.1 Features
Step & direction (PUL/DIR) or CW/CCW (double pulse) control
18-36VDC supply voltage
200 KHz max pulse input frequency
16 micro-step resolutions of 200-25,600 via DIP switches
8 output current settings of 0.3 – 2.2A via DIP Switches
Configurable control command smoothing for performance excellence
Automatic idle current reduction to 50% or 90%
Convenient self-test for easy diagnosis
Automatic self-configuration to match wide-range NEMA 8, 11, 14 and 17 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
Over-voltage and over-current protections
CE certified and RoHS compliant
1.2 Applications
The EM422S stepper drive is designed to power 2 phase (1.8°) or 4-phase (0.9°) NEMA 8, 11, 14 and 17 hybrid
stepper motors. It can be adopted in many industries (CNC machinery, electronics, medical, automation, packaging…)
for applications such as 3D printer, automation machines, medical machines, laser cutters, X-Y tables, labeling
machines, pick-place devices
,
etc. Its excellent performance, simple design, and easy setup features make EM422S
ideal for many step & direction control type applications.
