The RoadRunner SoftStep R213S micro-stepping motor drive from Testra (Tempe, AZ) replaces 1- to 7-amp drives with inputs ranging from 20VDC to 80VDC. Users are often surprised by ultra-smooth, quiet stepper motor operation.
The intelligent on board processor developed by Testra treats the input steps as small vector moves and smoothly chains them together with 250 or 256 micro-steps per regular motor step with controlled accelerations that eliminates jerkiness.
The new drives are shipped with jumpers installed with a divisor setting of 10 to make them Gecko drive compatible, but the jumpers can be reconfigured by the user as needed. Measuring 2.5” x 2.5” x 0.825”, the SoftStep drives are physically small for easy installation. Since they are extremely efficient, no heat sink is required in most cases. They can simply be mounted to the chassis or cabinet in any convenient location.
Dual chopper stabilized current comparators along with auto-calibration gets rid of commutation discontinuities and maintains a near perfect sine wave drive, further reducing motor noise while increasing accuracy and stability. Other features include resistor programmable current, opto-isolated inputs, step, direction, disable input (not isolated) and step frequency to 5Mhz.
For more information, visit www.testra.com.