Astrosyn International Technology is introducing a compact stepper motor driver with high performance. The P315 is a low-cost bipolar unit measuring only 86 x 55 x 20mm.
Seven selectable microstepping resolutions offer a range of motor increments, with up to 12,800 steps per revolution. The unit is simple to set-up, helped by details of the switch settings being printed on the front of the case. Internal jumpers enable the input frequency to be easily optimised.
Supply voltage is in the range 15-40V DC and output current is adjustable from 0.1-1.5A. The unit uses an inaudible chopping frequency of 20kHz.
Other features include overcurrent, overvoltage and short-circuit protection, and automatic idle current reduction. Mixed decay current control reduces motor overheating. Input signals are optically isolated and TTL-compatible.
