Leadshine MD2278

Stepper motor driver
Leadshine MD2278

Analog Technology, max. 220VAC/7.8A

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Product description:

The MD2278 is a high performance microstepping drive based on pure-sinusoidal current control technology. Owing to that and the self-adjustment technology (self-adjust current control parameters) according to different motors, the driven motors can run with less noise, generating less heat, move smoother and have better performance at higher speed than most of the drives on the market. In addition, the MD2278 has a built-in EMI filter which can make the driver operate with higher reliability. The driver is suitable for driving 2-phase and 4-phase hybrid stepping motors.

Features:
  • High performance, cost-effective
  • Supply voltage up to 220VAC
  • Output current up to 7.8A
  • Output current selectable in 16 steps via DIP-switch
  • Automatic idle-current reduction (in standstill mode) to reduce motor heating; function switchable
  • Self-adjustment technology
  • Pure-sinusoidal current control technology
  • Pulse input frequency up to 400 kHz
  • TTL compatible and optically isolated input
  • 16 selectable resolutions in decimal and binary, up to 10,000 steps/rev
  • Suitable for 2-phase and 4-phase motors
  • Support PUL/DIR and CW/CCW modes
  • Short-voltage, over-voltage, over-current protections
Electrical specifications:
Parameters Min Typ. Max Unit
Output current 0.42 (0.3 RMS) - 7.8 A
Supply voltage 80 180 220 VAC
Logic signal current 7 10 16 mA
Puls input frequency 0 - 400 kHz
Insulation resistance 500     MO
Further specifications:
Parameters Min Typ. Max
Microsteps/1.8° 400   10,000
PUL/PUL CW   X  
Double pulse CCW   X  
NEMA sizes 17   34
Motor type Mecheltron 42BYGH-XXXX   86BYGH-XXXX
Applications:

Suitable for a wide range of stepping motors of NEMA sizes 17, 23, 24 and 34 (42x42 mm to 86x86 mm). It can be used in various kinds of machines, such as X-Y tables, engraving machines, labeling machines, laser cutters, pick-place devices, and so on. Particularly well suited for applications where low noise levels, less heat development, high speed and high precision are desired.

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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