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Microstepping drives increase capability

Microstepping drives increase capability
A new range of high power/high speed microstepping drives, delivering up to 13Nm of holding torque from a 320V DC bus is now available from Mclennan Servo Supplies. The increased bus voltage on the STAC6, from USA based Applied Motion Products, effectively extends the power range of stepper drive technology and includes additional features that together derive improved performance from today's stepper motors.

The packaged drives are aimed at applications where the simplicity and comparatively lower cost of stepper motor control can replace servomotor positioning. Available in choice of S, Si and Q control versions covering simple step and direction, GUI based programming and host control with optional encoder following for multi-axis motion, the fully protected STAC6 series drive stage features advanced 20kHz PWM current control with anti-resonance, torque ripple smoothing and waveform damping control algorithms - with programmable microstepping emulation to 50800 steps/rev for smooth dynamic performance. 

Each control option offers a self test and auto setup for straightforward installation and the range is available with a choice of direct-on-line single-phase power ratings for 94-135V AC delivering a 165V DC bus, and 94-265V AC input voltage for a 320V DC bus. 

For such a high bus voltage, correct motor selection is imperative and the STAC6 series is available with laboratory tested and matched NEMA 23 and 34 frame stepper motors with best performance speed/torque information and selection advice available from Mclennan.
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