Product Description:

The 800-2021 is a compact digital servo drive produced by Copley Controls within the Accelnet CANopen Modules series. The unit interfaces between a motion controller and a three-phase brushless motor, converting low-level commands into precisely regulated phase currents. By handling current, velocity, or position loops internally, it simplifies the integration of linear or rotary servomotors in packaging machinery, gantries, and semiconductor tools. It supports distributed automation where network bandwidth and tight synchronization are critical.

Its command path accepts a 12-bit analog reference, providing 4,096 discrete levels for fine torque adjustment at the drive input. Real-time exchanges occur over EtherCAT, and dual RJ-45 100BASE-TX ports provide pass-through cabling so multiple axes can share a line. The power stage can deliver a continuous output of 3 A per phase and withstand bursts of up to 6 A for acceleration events before thermal limits intervene. With a rated output of 90 VDC, the amplifier accepts supply rails up to the same voltage while remaining functional down to 14 VDC. Three output phases are commutated sinusoidally, and the network updates velocity and position commands at 4 kHz. A minimum load inductance of 200 µH keeps current ripple within the drive’s operating limits.

Control bandwidth is reinforced by a current regulator that cycles at 16 kHz, allowing precise suppression of phase lag during rapid torque changes. For high-resolution contouring, the differential step-and-direction port accepts pulses up to 2 MHz, preventing position quantization when external interpolators stream dense trajectories. A total of 11 optically isolated input channels capture limit, home, and user signals, while four sourcing outputs transmit ready, warning, and fault states. The internal modulator sustains electrical frequencies up to 3000 Hz, enabling operation with spindle or linear motors that require elevated mechanical speeds.