Product Description:

The PC832-XYZ-A is a brushless servo drive produced by Pacific Scientific for the PC800 – PCE800 Brushless Servo Drives series. It supplies regulated power and control signals to permanent-magnet servo motors. This allows closed-loop torque, speed, and position control in automated machinery, packaging modules, and electronic assembly lines.

The power stage delivers a continuous output current of 2.7 ARMS, corresponding to a continuous mechanical output of 1.1 kW @ 240 VAC 3 Ph. During startup the input stage can tolerate an inrush of 300 A for 1.0 ms, after which it settles to an rms line current of 4.5 A on a three-phase 240 VAC supply. Internally, DC is stabilized on a nominal bus held at 320 VDC @ 240 VAC 3 Ph, and switching devices operate at a ripple frequency of 20 kHz to minimize current ripple seen by the motor. The command interface accepts RS-232/485 messages, ±10 V analog velocity or torque commands, and step-and-direction or indexing pulses, giving flexibility for PLC or motion-card integration. A 62.5 µs update period keeps the current loop synchronized with encoder feedback, and motors with phase inductance down to 4.0 mH remain stable under those cycle times.

Cabling can run up to 50 m without exceeding voltage-drop or noise limits, and the drive supports machines whose phase inductance rises to 4 H (L-L). For brief overloads it can source a peak output of 5.3 ARMS, while excess regenerative energy is diverted to an internal shunt rated at 12.8 kW for 500 ms. Overall power stage efficiency reaches 98%, limiting heat generation so the basic connector kit supplied with the accessory package is adequate for natural-convection panels. The 1.0 ms inrush pulse width coordinates with standard circuit breakers, and the update period aligns with the 20 kHz carrier so motion commands remain deterministic across the full motor cable length.