PC842-001-N Pacific Scientific
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The Pacific Scientific PC842-001-N is a servo drive from the PC800 - PCE800 Brushless Servo Drives series. It offers a continuous output current of 2.7 ARMS and peak output current of 5.3 ARMS, with a maximum output power of 2.25 kW. The drive features a SERCOS Network command interface and operates at 98% efficiency with a nominal bus voltage of 320 VDC.
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Product Description:
The PC842-001-N is a brushless servo drive manufactured by Pacific Scientific and supplied within the PC800 – PCE800 Brushless Servo Drives series. It is intended to regulate torque, speed, and position of compatible servo motors in automated machinery, linking the motion axis to higher-level machine controls through its network interface and internal power stage. This arrangement lets the unit serve as both the control and power stage for a single servo axis. The enclosure measures 198.1 mm in height, 88.1 mm in width, and 158 mm in depth, giving a compact footprint for multi-axis panels.
This model communicates over the SERCOS Network, allowing deterministic fiber-optic motion commands and diagnostic feedback. During continuous operation, the power stage delivers up to 2.7 ARMS of output current, which supports 1 Nm-class motors without thermal derating. At the same duty point, the drive provides 1.1 kW of electrical power while maintaining an energy conversion efficiency of 98%, reducing cabinet cooling requirements. A stiff DC link held at 320 VDC is produced from a three-phase 240 V supply. The drive uses a 20 kHz switching frequency to keep motor acoustics low and torque ripple minimal, and a 2.25 kW power reserve supports short bursts above the continuous rating.
An inrush limiter is sized for currents up to 300 A, guarding upstream breakers when the DC bus charges. The power terminals permit a motor cable length of up to 50 m, allowing the actuator to be mounted farther from the drive without additional output filters. Winding protection is maintained so long as the connected motor has at least 4 mH of inductance, matching the drive’s current-loop bandwidth. For rapid indexing or emergency moves, the amplifier can supply a peak output of 5.3 ARMS. The housing weighs 1.9 kg, which helps keep installation loads low in compact control enclosures.
Frequently Asked Questions about PC842-001-N:
Q: What type of command interface does the PC842-001-N servo drive support?
A: The PC842-001-N interface uses SERCOS Network communication for command input.
Q: What is the continuous output current rating of the PC842-001-N?
A: This servo drive delivers a continuous output current of 2.7 ARMS.
Q: What is the maximum motor cable length for the PC842-001-N?
A: The maximum motor cable length supported by the PC842-001-N is 50 meters.
Q: What is the efficiency of the PC842-001-N at continuous power?
A: At continuous power (Pcont), the PC842-001-N achieves an efficiency of 98%.
Q: What is the nominal bus voltage of the PC842-001-N drive when using 240V 3-phase supply?
A: The nominal bus voltage for the PC842-001-N when powered by 240V 3-phase is 320 VDC.
