EM503

 

Stepper motor driver
Leadshine EM503

Digital Technology, max. 50V/4.2A

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Download RS232 pin layout
Product description:

The EM503 is a versatile fully digital stepping driver based on a DSP with advanced control algorithm. The EM503 is the next generation of digital stepping motor controls. It brings an unique level of system smoothness, providing optimum torque and nulls mid-range instabilities. Motor self-test and parameter auto-setup technology offers optimum responses with different motors and makes it easy to use. The driven motors can run with much smaller noise, generate less heat, and move smoother than most other drivers on the market. Its unique features make the EM503 an ideal solution for applications that require low-speed smoothness.

Additionally, the EM503 has a build-in sensorless stall detection function to eliminate the cost of feedback devices and cabling. Apart from the auto configuration, it has 16 selectable built-in auto-configuration parameters which are best matched to Leadshine's stepping motors.
Note: At present the EM503 only detects motor stall at running speeds >300RPM.

Features:
  • Anti-Resonance, provides optimum torque and nulls mid-range instabilities
  • Supply voltage up to +50VDC
  • Output current programmable, from 0.21A to 4.2A
  • Automatic idle-current reduction (in standstill mode) to reduce motor heating; function switchable
  • Motor self-test and parameter auto-setup technology, offers optimum responses with different motors
  • Pulse input frequency up to 200 kHz
  • TTL compatible and optically isolated input
  • Multi-Stepping allows a low resolution step input to produce a higher microstep output for smooth system performance
  • Microstep resolutions programmable, from full-step to 102,400 steps/rev
  • Suitable for 2-phase and 4-phase motors
  • Support PUL/DIR and CW/CCW modes
  • Over-voltage, over-current, phase-error protections
Electrical specifications:
Parameters Min Typ. Max Unit
Output current 0.21 - 4.2 (3.0 RMS) A
Supply voltage +20 +36 +50 VDC
Logic signal current 7 10 16 mA
Puls input frequency 0 - 200 kHz
Insulation resistance 500     MΩ
Further specifications:
Parameters Min Typ. Max
Microsteps/1.8° 200(Full-step)   102,400
PUL/PUL CW   X  
Double pulse CCW   X  
NEMA sizes 14   23
Motor type Mecheltron 35BYGH-XXXX   57BYGH-XXXX
Mechanical specifications: mm [inch]
Applications:

Suitable for a wide range of stepping motors of NEMA sizes 14,16,17, 23 (35x35 mm to 57x57 mm). It can be used in various kinds of machines, such as laser cutters, laser markers, high precision X-Y tables, labeling machines, and so on. Its unique features make the EM503 an ideal solution for applications that require low-speed smoothness and high performance.

Typical connection schematic:

A typical system consists of stepper motor, stepper motor driver, power supply and controller. The following image shows a typical connection schematic:

 

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