Product Description:

Pacific Scientific builds the 6410-001-N-N-N as part of the 6410 Stepper Drives series. This open-frame unit is a two-phase bipolar chopper drive intended to index and position stepper motors in automated machinery, conveying commands from a motion controller to the motor windings with precise current regulation. In industrial automation lines, it serves as the intermediary between low-level control signals and the higher power demanded by stepper motors, making it a compact drive for material handling, pick-and-place heads, and small gantry axes.

The drive accepts a supply window that starts at 24 Vdc and reaches 75 Vdc, allowing the same model to run on low-voltage control supplies or higher-energy bus links without component changes. Inside the power stage, switching occurs at a 20 kHz chopper frequency, placing the ripple above the audible range so motor noise and mechanical vibration are minimized. Control inputs accommodate fast command streams; the step line can process pulses up to 2.0 MHz, enabling sub-microstep resolutions when paired with high-speed controllers. For dynamic acceleration events, the current regulator can deliver a peak phase current of 7.1 A, pushing additional torque from the motor for short intervals while staying beneath the 83 Vdc bus overvoltage trip point.

During continuous indexing, the phase current settles at an RMS value of 5 A, balancing thermal load with torque output for duty cycle operation. Direction changes are supported with only a 50 µs setup interval, so reversal commands can be issued shortly before the leading edge of a new step pulse. The digital interface recognizes pulses as brief as 250 ns, which reduces controller timing constraints and permits higher microstepping ratios. Physical installation is simplified by the compact footprint of 5 × 1.5 × 4.3 in; at 1 lb, it can be fastened directly to a panel without a separate heat sink when mounted in a ventilated enclosure.