Product Description:

The NEXTSTEP-SYST01 microstepping drive is manufactured by Kollmorgen as part of the NEXTSTEP Microstepping Drives series. It converts step and direction commands into precisely timed phase currents for 2-phase hybrid permanent-magnet steppers, enabling indexed motion in pick-and-place stations, small conveyors, and metering pumps. Acting as the interface between a pulse generator and the motor windings, the unit supports open-loop positioning without feedback and fits compact industrial automation platforms.

Internally, the drive controls a single motion channel, so its capacity is 1 axis, simplifying wiring in compact machines. It accepts step streams up to 2 MHz, with a minimum high time of 250 ns; together, these limits govern maximum motor speed. A reversal request is acknowledged after only 0.4 µs, enabling tight bidirectional moves. Opto-isolated inputs sense logic levels as low as 6.5 mA; the corresponding 15 mA maximum guards against excess loading. Rising-edge triggering advances the internal step counter, and factory microstep choices include 5,000, 10,000, 18,000, 20,000, 25,000, 25,400, 36,000, and 50,000 steps per revolution, while alternate 200- to 2,000-step settings support coarse positioning in legacy equipment.

The housing measures 5.4 × 5.4 × 2.5 in, allowing installation in shallow control panels. When paired with a motor exhibiting a 1.8° full-step angle, the finest resolution yields 0.0072° per microstep. The output bridge switches at 20 kHz, reducing audible noise while balancing switching loss. Over-temperature protection latches drive outputs at 65 °C, and reliable operation is further bounded by a non-condensing humidity ceiling of 90% RH. A dedicated comparator halts PWM generation when that threshold is reached, protecting the half-bridge FETs from cumulative heat stress before derating can occur.

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