SoftStep Drives

SS483 Series

Second-source compatible with the IM483 — at higher performance and lower cost.

Bipolar micro-stepping driver for motors in the 0.5–3 A RMS range on 12–45 V. Full-step and half-step machines convert to quiet, smooth micro-stepping with no software changes at all.

Direct replacement for IMS IM-483

Testra SS483 SoftStep micro-stepping driver board
input power
12–45 V
peak (3 A RMS)
4.2 A
always micro-steps
1/256
step response
10 MHz

More views

SS483 Series — Fitted to its heatsink
Fitted to its heatsink

SS483 Series specifications

Hardware

  • 12–45 volt input power
  • Current drive 0.4 to 4.2 amp, resistor programmable
  • Opto-isolated logic inputs: step clock, direction, enable, reset
  • Step frequency response to 10 MHz
  • Bipolar 4-wire H-bridge D-MOS drive
  • Electronic fusing for motor faults and mis-wiring
  • Thermal shutdown
  • Status indicator — axis on
  • Mechanical outline 2.75 in (69.9 mm) x 3.00 in (76.2 mm) x 1.25 in (31.75 mm)
  • Operating 0 to 70 C at heatsink
  • Switching power supply for +5 V user power
  • Dual 10-bit D/A for current control
  • Flash waveform tables; flash programmable logic
  • Crystal controlled clock
  • I/O connector options
  • Jumper-selectable micro-step resolution
  • Chopper-stabilised zero-crossing commutation — eliminates clicks, ten times better positioning than the IM483

Firmware

  • On-the-fly step size changes
  • Current reduction 0.5 sec after last step input
  • Optional motor waveform matching to eliminate velocity and torque ripple
  • Customisable for OEMs to add indexer and control functions

Models

  • SS483 — fully compatible with the IM-483 driver. Micro-step resolutions 1/2, 1/4, 1/5, 1/8, 1/10, 1/16, 1/25, 1/32, 1/50, 1/64, 1/125, 1/128, 1/250, 1/256
  • SS483SD — SoftStep, always micro-steps at 1/256 or 1/250. Step resolutions 1/2, 1/4, 1/5, 1/8, 1/10, 1/16, 1/25, 1/32, 1/50, 1/64, 1/125, 1/128, 1/250, 1/256. Optional quadrature input, noise filtering, multi-step input
  • SS483S — SoftStep, always micro-steps at 1/256. Step resolutions starting at full step

Get in touch

Tell us what the machine has to do.

Pricing is quoted per application. Call sales, or send the axis count, motor sizes and duty cycle and we will come back with a configuration.