8EI2X2HWS10.0400-1 by B & R Automation

The 8EI2X2HWS10.0400-1 is a servo drive module from B & R Automation in the 8EI Servo Drives series. It is part of the ACOPOS platform and is intended to control synchronous or induction servo motors in automated machinery. By delivering regulated current and processing encoder feedback, the drive manages positioning, speed, and torque loops that are needed for repeatable industrial motion. The control section keeps motor response aligned with commanded movement profiles during acceleration, steady running, and stopping. That makes the module suitable for axes that need consistent velocity regulation and accurate positioning over repeated machine cycles.

It accepts a three-phase supply of 3x 200-480 VAC, allowing operation on common industrial mains. The power stage provides a continuous 2.2 Aeff, which suits small to medium servo motors, and an internal braking resistor dissipates regenerated bus energy during deceleration. The braking path is built into the module housing, which reduces the need for separate external hardware in many machine layouts. The unit uses wall mounting so the backplate can transfer heat to the cabinet, and hardwired STO safety technology with encoder permits immediate torque removal through the safety circuit. Terminal access remains direct at the front of the module, which helps keep wiring visible during installation and inspection.

The drive belongs to the ACOPOS P3 8EI servo drive product family and is supplied as a dedicated 1-axis module. Its wiring interface uses a 1-row connector set, which keeps the connection layout straightforward in compact control cabinets. The drive has no plug-in module, so functions such as fieldbus expansion or local I/O must be provided elsewhere in the system. The mechanical format matches other modules in the same platform, which helps maintain an orderly cabinet layout when several motion components are installed together.