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Archive for January 16th, 2013

Stepper Motor Driver Spec Comparison

Being in the market for some more-or-less industrial stepper driver bricks, here’s a summary of what’s currently available on eBay from the usual vendors, copied-and-pasted directly from the descriptions with some fluff removed:

M542 Stepper Driver Board Controller

  • Supply voltage from 20V DC to 50V DC
  • Output current from 1.0A to 4.5A
  • Self-adjustment technology, full to half current self-adjustment when motors from work to standstill via switching off SW4
  • Pure-sinusoidal current control technology
  • Pulse input frequency up to 300 KHz
  • TTL compatible and optically isolated input
  • Automatic half-current reduction as long as switching off SW4 when motors stop
  • 16 selectable resolutions in decimal and binary, up to 51,200 steps/rev
  • Suitable for 2-phase and 4-phase motors
  • Support PUL/DIR and CW/CCW modes
  • Short-voltage, over-voltage, over-current and short-circuit protection, protect the PC, motors, driver etc from being damaged

M542H Stepper Driver Board Controller

  • Supply voltage from 20V DC to 100V DC
  • Output current from 1.0A to 4.5A
  • Self-adjustment technology, full to half current self-adjustment when motors from work to standstill via switching off SW4
  • Pure-sinusoidal current control technology
  • Pulse input frequency up to 300 KHz
  • TTL compatible and optically isolated input
  • Automatic half-current reduction as long as switching off SW4 when motors stop
  • 16 selectable resolutions in decimal and binary, up to 51,200 steps/rev
  • Suitable for 2-phase and 4-phase motors
  • Support PUL/DIR and CW/CCW modes
  • Short-voltage, over-voltage, over-current and short-circuit protection, protect the PC, motors, driver etc from being damaged

2M542 Stepper Driver Board Controller

  • Suitable for 2-phase hybrid stepper motors (Outer diameter: 57,86mm)
  • H bridge bipolar constant phase flow subdivision driver
  • Speed self-adjustment technology
  • Easy current subdivision setting
  • 2–64 resolutions,16 operation modes
  • ENA mode
  • 8 dial switch for different functions
  • Undervoltage, Shortvoltage, overvoltage, overcurrent protections
  • Supply Voltage: 24~50V DC (Typical 36 V)
  • Output Current (peak): Min 1.0 A, max 4.2A
  • Logic Input Current: Min 7, typical 10, max 16 mA
  • Pulse Frequency: Max 200 KHz
  • Pulse Low Level of Time: 2.5 US
  • Cooling: Natural /mandatory
  • Working Surrounding: Avoid dust, oil mist and corrosive gas
  • Storage Temp: -10—80 deg
  • Working Temp: Max 65 deg
  • Surrounding Humidity: <80%RH without condensing and frost
  • Vibration: 5.9m/s²
  • Model: 2M542
  • Size: Approx. 4 5/8 x 3 x 1 5/16 inch (L x W x H)

MA860H Stepper Driver Board Controller

  • Supply voltage from “18V AC to 80V AC” or “24V DC to 110V DC”
  • Output current from 2.6A to 7.2A
  • Self-adjustment technology, full to half current self-adjustment when motors from work to standstill via switching off SW4
  • Pure-sinusoidal current control technology
  • Pulse input frequency up to 300 KHz
  • TTL compatible and optically isolated input
  • Automatic half-current reduction as long as switching off SW4 when motors stop
  • 16 selectable resolutions in decimal and binary, up to 51,200 steps/rev
  • Suitable for 2-phase and 4-phase motors
  • Support PUL/DIR and CW/CCW modes
  • Short-voltage, over-voltage, over-current and short-circuit protection, protect the PC, motors, driver etc from being damaged
  • External Fan Design to avoid overheat

2M420 Stepper Motor Driver controller

  • H-Bridge, 2 Phase Bi-polar Micro-stepping Drive
  • Suitable for 2-phase, 4, 6 and 8 leads step motors, with Nema size 17
  • Supply voltage from 20V DC to 40 DC
  • Output current selectable from 0.9 ~ 3.0A peak
  • Current reduction by 50% automatically, when motor standstill mode is enabled
  • Pulse Input frequency up to 200 kHz
  • Optically isolated differential TTL inputs for Pulse, Direction and Enable signal inputs
  • Selectable resolutions up to 25000 steps
  • Over Voltage, Coil to Coil and Coil to Ground short circuit protection.

2M982 CNC Stepper Motor Driver

  • Supply voltage: 24~80V DC
  • Suitable for 2-phase stepper motors
  • Output current: Min 1.3A Max 7.8A
  • Speed self-adjustment technology
  • Pure-sinusoidal current control technology
  • Pulse input frequency: Max 200 KHz
  • Optically isolated input and TTL compatible
  • Automatic idle-current reduction
  • 15 selectable resolutions, MAX 12,800 steps/rev
  • PLS, DIR (CW/CCW), ENA mode
  • Undervoltage, Shortvoltage, overvoltage, overcurrent protections

Leadshine DM1182

  • 2 Phase Digital Stepper Drive
  • Direct 115VAC input
  • Current 0.5 – 8.2A
  • Max 200 kHz

In round numbers, the M542 seems to be the basic driver for NEMA 17 / 23 /34 steppers. Remember that current isn’t proportional to frame size.

The M542H has a higher voltage limit that may be more useful with larger / multiple-stack motors; higher voltage = higher di/dt for a given inductance = same di/dt for higher inductance.

The 2M542 seems to be slightly different from both of its siblings: higher minimum voltage, slightly lower maximum current, slower step frequency. Many of the listings apply both M542 and 2M542 to the same hardware in the same listing, so it’s not clear what you’d get in the box. Ask first, trust-but-verify?

The MA860H seems appropriate for NEMA 34 / 42 and up , due to the much higher minimum current.

The 2M420 seems to be intended for NEMA 17 /23 class steppers. It’s not available from nearly as many suppliers.

The 2M982 looks like another NEMA 34 /42 and up driver.

The DM1182 seems strictly from industrial, but if you don’t know what you need, it’s a do-it-all killer.

As with all eBay listings, the picture need not match the description and neither may match what actually arrives in the box from halfway around the planet.

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