The Pacific Scientific 6410-001-C-H-K is a micro stepping motor driver that converts step and direction inputs into precise winding currents for two-phase stepper motors. It delivers adjustable output current from 0.625 A to 5 A RMS (7.1 A peak) across a 24–75 VDC input range, supporting step rates up to 2 MHz with filter disabled or 500 kHz enabled. The driver employs a patented 4-phase Bipolar Chopper Drive operating at 20 kHz nominal frequency, combining recirculating and non-recirculating power regulation for superior current control and minimal ripple. Microstepping resolution is field-configurable via DIP switches to 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, or 1/256 steps, enabling up to 51,200 steps per revolution on standard 200-step-per-revolution motors. Digital Electronic Damping Control eliminates mid-speed instability and prevents motor stalling. Idle Current Reduction automatically drops winding current by up to 50% during dwell periods (default 0.1 seconds; selectable 0.05 or 1.0 second timeouts), reducing heating and system power draw. The optically isolated signal interface provides noise rejection via integrated step filtering and enable sense reversal capability. Designed for Pacific Scientific hybrid stepper motors and compatible with most industry-standard 2-phase stepper motors.
Technical Specifications
• Input Power: 24–75 VDC
• Output Current (RMS): 0.625–5 A, adjustable
• Output Current (Peak): 7.1 A
• Chopper Frequency: 20 kHz nominal
• Maximum Step Rate: 2 MHz (filter disabled); 500 kHz (filter enabled)
• Microstepping Resolution: 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256 (DIP-switch configurable)
• Maximum Steps per Revolution: 51,200
• Motor Compatibility: Standard and performance-enhanced 2-phase stepper motors
– Key Features
• Patented 4-phase Bipolar Chopper Drive with low ripple current and high back-EMF rejection
• Digital Electronic Damping Control for smooth mid-band operation
• Idle Current Reduction: up to 50% current decrease during dwell periods
• Selectable timeout windows (0.05, 0.1, 1.0 seconds) for ICR activation
• Step input filter for noise immunity
• Optically isolated signal interface
• Enable sense feature for input polarity reversal
• Field-configurable microstepping via DIP switches
– Typical Applications
Precision positioning, automation equipment, motion control systems requiring high-resolution stepping with reduced electrical noise and thermal load during idle periods.
– Compatibility & Integration
Compatible with Pacific Scientific hybrid stepper motors and most standard 2-phase stepper motor designs. Optically isolated inputs ensure noise-free operation in electrically noisy environments.
