pc3402di-001-e Pacific Scientific
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The Pacific Scientific pc3402di-001-e is an intelligent servo drive from the PC3400 Servo Drives series, featuring a Thompson F168 processor and a 20 MHz clock speed. This drive provides a continuous output power of 214 W and continuous current of 2.5 ARMS, with a peak current of 5 ARMS. It is equipped with 256K of both flash and RAM memory.
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Product Description:
The pc3402di-001-e is an intelligent servo drive engineered by Pacific Scientific as part of the PC3400 Servo Drives series. The device combines power electronics with closed-loop control logic to command brushless servomotors used on pick-and-place axes, packaging equipment, and other automated stations. It converts three-phase supply power into precisely regulated motor current while executing motion-control algorithms within the same unit. This integrated approach reduces the need for separate control hardware and helps conserve space in electrical cabinets. The drive can regulate torque, velocity, and position as operating conditions or programmed motion profiles change.
A Thomson F168 processor running at 20 MHz executes trajectory generation, motor commutation, and diagnostic routines. Continuous output power is rated at 214 W, based on the thermal capacity of the heat sink and the efficiency of the switching stage. The drive supplies a continuous phase current of 2.5 ARMS to compatible motors. During acceleration or temporary load changes, the output can reach 5 ARMS, providing additional current for short operating intervals. Internal memory includes 256 K of flash storage for program code and a separate 256 K SRAM section for variables, setpoints, and error records. The flash memory preserves stored program data when power is removed, while SRAM provides fast temporary storage during operation.
The current regulator updates every 102.4 µs, allowing the drive to respond quickly to torque commands and changes in motor load. Velocity calculations occur at 408 µs intervals, providing the control bandwidth needed for stable speed regulation and mid-speed profile tracking. Position corrections run every 2.0 ms to maintain commanded movement at the application level. These separate task intervals allow the processor to prioritize rapid current regulation while handling velocity and position calculations at rates suited to their respective control loops. Motion scripts and configuration tables reside in internal flash memory, leaving the external communication channel available for operating commands and status data. Diagnostic processing can monitor control activity and record relevant operating information in memory without interrupting the primary motion tasks.
