Product Description:

The CU832-001 is a compact brushless servo drive manufactured by Pacific Scientific for the PC800-PCE800 Brushless Servo Drives series. Designed to regulate torque and velocity in automated machinery, the unit converts motion commands from a host controller into precisely regulated motor currents. By integrating communication, current control, and protective circuitry in one housing, the product provides a ready-to-install axis amplifier for conveyors, pick-and-place heads, or packaging lines that rely on closed-loop brushless motors.

Its power section delivers a continuous phase current of 2.7 ARMS at 25 °C and can supply momentary demands up to 5.3 ARMS. The digital current loop closes with a bandwidth of 1.5 kHz and is refreshed every 62.5 microseconds, allowing fast torque response under load transients. Motion commands may be fed as differential voltages within a span of ±13.5 V, and the converter maintains an analog linearity of 0.1% FS so drive-introduced position error remains minimal. A multimode command interface accepts RS-232/485 serial lines, ±10 V velocity or torque references, step-and-direction pulse trains, and internal indexing tables. Protection on the input side is provided by a 10 A, 250 V time-delay fuse, while the housing has a depth of 158 mm, a width of 88.1 mm, and a height of 198.1 mm.

Feedback is processed through a resolver converter that interprets rotor position with 24 bits/rev of resolution, aligning the current loop to the magnetic field at every update. For pulse-train control, the step-and-direction channel operates up to 800 kHz, matching high-speed motion controllers. The power bus uses input capacitors that draw an inrush peak of 300 A for approximately 1.0 ms, so the external supply contactor must withstand that pulse. Overall mass is 1.9 kg, which helps simplify panel mounting without additional support brackets. The specified dimensions also allow side-by-side placement of multiple drives in crowded enclosures.