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CU833-002 Pacific Scientific

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The Pacific Scientific CU833-002 is part of the PC800 - PCE800 Brushless Servo Drives series and features a continuous output current of 3.6 ARMS with a continuous output power of 1.5 kW at 240 VAC 3-phase. This servo drive offers a peak output current of 10.6 ARMS, a nominal bus voltage of 320 VDC, and a power stage efficiency of 98%. The drive measures 198.1 mm in height, 88.1 mm in width, and 158 mm in depth, with a weight of 2.0 kg.

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Product Description:

The CU833-002 is a brushless servo drive produced by Pacific Scientific within the PC800–PCE800 Brushless Servo Drives series. It regulates torque, speed, and position of permanent-magnet servomotors in industrial automation and serves as the power interface between motion controllers and actuators. By linking to machine PLCs through RS-232/485, ±10 V analog, and step-and-direction command channels, the unit supplies controlled three-phase power for packaging, material-handling, and electronic assembly equipment. This arrangement supports responsive motor control in systems that need accurate motion with repeatable results during changing operating conditions.

The drive accepts a nominal input of 240 VAC and rectifies it to a 320 VDC bus that feeds the transistor power stage. During continuous operation it supplies 3.6 ARMS of output current, while momentary overloads reach 10.6 ARMS for rapid acceleration. Closed-loop speed control is handled by a velocity loop with a 400 Hz bandwidth, and resolver feedback supports stable regulation during changing motion demands. The power section operates at 98% efficiency, so only limited heat must be removed through the metal housing. The enclosure measures 198.1 mm high, 88.1 mm wide, and 158 mm deep, which helps it fit into compact control cabinets.

When connected to the line supply, the unit draws 6 A RMS, delivers a continuous shaft output of 1.5 kW, and permits peaks to 4.5 kW during dynamic moves without exceeding thermal limits. Its compact enclosure and 2.0 kg mass make panel installation straightforward and reduce mechanical load on mounting hardware. Removable terminals on the lower edge keep power wiring and control wiring organized, which helps reduce noise coupling in dense multi-axis cabinets. Multiple command interfaces allow the drive to support indexed motion or fully closed-loop motion from host systems while maintaining clear separation between switching conductors and signal cables.

Command Interface
RS-232/485, ±10 Vdc, Step/Dir, Indexing
Continuous Output Current
3.6 ARMS
Continuous Output Power
1.5 kW @ 240 VAC 3-Phase
Depth
158 mm
Height
198.1 mm
Nominal Bus Voltage
320 VDC
Nominal Input Voltage
240 VAC
Peak Output Current
10.6 ARMS
Peak Output Power
4.5 kW
Power Stage Efficiency
98%
Resolver Excitation
6510.42 Hz
Rms Line Current
6 A @ 240 VAC 3-Phase
Velocity Loop Bandwidth
400 Hz
Weight
2.0 kg
Width
88.1 mm
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Frequently Asked Questions about CU833-002:

Q: What types of command interfaces does the CU833-002 provide?

A: The CU833-002 supports RS-232/485, ±10 Vdc, Step/Dir, and Indexing as command interfaces for versatile control options.

Q: What is the continuous output current capability of the CU833-002?

A: This unit can continuously output 3.6 ARMS for extended operation periods.

Q: What is the peak output power of the CU833-002 servo drive?

A: The CU833-002 delivers a peak output power of 4.5 kW for applications requiring short bursts of high power.

Q: How efficient is the power stage of the CU833-002?

A: The power stage in this drive achieves 98% efficiency during operation.

Q: What is the nominal input voltage required for the CU833-002 servo drive?

A: The CU833-002 operates at a nominal input voltage of 240 VAC, making it compatible with standard industrial power supplies.


Internal Product Review

  • ‘‘The CU833-002 is a Pacific Scientific brushless servo drive with a flexible command interface supporting RS-232/485 and Step/Dir control. Continuous output power of 1.5 kW at 240 VAC and peak output power of 4.5 kW give this unit impressive headroom for demanding motion applications. A 98% power stage efficiency and 400 Hz velocity loop bandwidth make this drive an excellent choice for precise, efficient servo control.’’

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