PCE800 Pacific Scientific
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The Pacific Scientific PCE800 is a brushless servo drive from the PC800 - PCE800 Brushless Servo Drives series. It supports analog commands with a linearity of 0.1% full scale and single-ended voltage input up to ±21 V. The drive offers position command modes including quadrature, step and direction, and up/down, with a position loop update time of 1 mSec and resolver resolution of 24 bits.
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Product Description:
The PCE800 is a digital brushless servo drive produced by Pacific Scientific and supplied within the PC800 - PCE800 Brushless Servo Drives series. Designed for integration in multi-axis machining centers, packaging lines, and material-handling stations, the drive conditions incoming command signals, energizes three-phase brushless motors, and closes current, velocity, and position loops in real time. Its role in industrial automation is to translate controller instructions into regulated motor torque and motion profiles while monitoring feedback devices for precise servo performance. This makes it suitable for applications that require repeatable axis synchronization, controlled acceleration, and accurate stop positioning under changing load conditions.
The drive accepts differential analog references up to ±13.5 V, and its analog command path maintains 0.1% full scale linearity so controller voltage maps accurately to motor output. Torque is regulated by a current loop that updates every 62.5 microseconds, which supports fast response to load disturbances. When commands are issued digitally, the interface processes step or quadrature pulses at rates up to 800 kHz. It also retransmits position feedback as complementary ABZ signals at up to 833 kHz for downstream controllers and diagnostic equipment. This dual command capability allows the drive to work with motion systems that use either voltage control or pulse-train signaling.
Incremental or resolver feedback may be routed up to 50 m without signal boosters, which helps when motors are mounted away from the control cabinet. Actual position is recalculated every 1 millisecond, which suits heavy-load axes that prioritize stability over peak speed. The embedded resolver-to-digital converter quantizes shaft angle into 24 bits, supporting fine contouring and smooth interpolation during motion. Internal switching occurs at a 16 kHz ripple frequency, which moves PWM-related noise above much of the audible range while reducing the effect of mechanical resonance.
Frequently Asked Questions about PCE800:
Q: What is the analog command differential range for the PCE800 servo drive?
A: The PCE800 brushless servo drive supports an analog command differential range of ±13.5 V for precise control input.
Q: What is the maximum feedback cable length supported by the PCE800 drive?
A: This model can handle a maximum feedback cable length of up to 50 meters, allowing for greater installation flexibility.
Q: What is the maximum digital command rate supported by the PCE800?
A: The digital command interface on the PCE800 supports up to 800 kHz, providing rapid data transfer for demanding applications.
Q: What position command modes are available on the PCE800 servo drive?
A: PCE800 offers position command modes including Quadrature, Step/Dir, and Up/Down for versatile positioning control.
Q: What is the position loop update rate for the PCE800 servo drive?
A: The position loop on the PCE800 is updated every 1 millisecond, delivering responsive positioning performance.
