Product Description:

Pacific Scientific manufactures the 6410-009-N-N-N micro-stepping drive as part of the 6410 Stepper Drives series. The module converts a DC supply into two precisely timed phase currents so a 1.8-degree stepper motor can perform fine incremental moves required in automated dispensing, inspection, or indexing equipment. It receives step and direction pulses from a motion controller and, through its internal current regulators, advances the motor in user-selectable resolutions while built-in protection circuits guard against electrical and thermal stress.

The drive disengages power if the bus voltage rises above 83 Vdc, preventing insulation breakdown or excess heating. Under normal operation, its bipolar chopper runs at 20 kHz, a switching rate that keeps audible noise low and smooths current ripple. Each phase can be driven continuously up to 5.0 A RMS, a level established by panel DIP switches and monitored by the current feedback loop. For high-speed moves, the input circuit accepts step pulse streams up to 2.0 MHz when the digital filter is disabled, and recognition is ensured down to a minimum pulse width of 250 ns. Wiring is handled through a 5-contact plug-in screw terminal for the motor phases, a 3-contact plug-in terminal for power, and a 9-socket D-Sub miniature for logic signals.

Resolution can be configured up to 51,200 steps per revolution, allowing sub-micron linear motion when coupled with fine-pitch lead screws. During acceleration peaks, the current limit briefly rises to 7.1 A peak so extra torque is available without reducing drive life. Thermal management relies on natural convection because the selected option does not include a heat sink, and the chassis may reach but must not exceed 60 °C. A 50% idle-current-reduction mode automatically halves motor dissipation when the axis is stationary. These functions are packaged in a compact enclosure measuring 5 × 1.5 × 4.3 in, simplifying placement inside densely populated control cabinets.