Product Description:

Pacific Scientific manufactures the PCE835-XYZ-T as a member of the PC800–PCE800 Brushless Servo Drives series. This drive conditions three-phase power and supplies regulated current to brushless servo motors used in material handling, packaging, and general motion axes inside automated equipment. By combining power conversion, loop control, and regenerative circuitry in one chassis, it reduces panel space and simplifies machine wiring while still handling the fast transient loads common in cyclic positioning tasks.

When fed from 480 VAC mains, the internal rectifier establishes a DC link of 640 VDC. A built-in circuit can absorb 70 J from the bus, with excess energy dumped into a 33 Ω, 100 W resistor to protect downstream components. Continuous operation at 40 °C allows the inverter to deliver 7.5 ARMS, corresponding to 5.6 kW of sustained output. With a power-stage efficiency of 97%, only a small portion of input power becomes heat, which eases cooling demands inside the cabinet. The current loop responds up to 1.5 kHz, while ripple is limited by a 16 kHz switching frequency to help keep torque smooth. Protective hardware requires a 30 A, 600 VAC line fuse, and the metal enclosure measures 254 × 146.7 × 192 mm for straightforward panel mounting.

Dynamic events are handled through a peak rating of 22.5 ARMS and up to 19.2 kW, giving adequate headroom for acceleration or shock loads before the drive returns to its thermal steady state. Velocity regulation is supported by a loop bandwidth of >400 Hz, so commanded speed changes introduced through RS-232/485 links, ±10 V analog signals, Step/Dir pulses, or internal indexing profiles are followed rapidly. Despite these high transient capabilities, the unit weighs only 4.2 kg, which simplifies assembly on DIN rails or backplates without added structural reinforcement.