AX5125-0000-02000 by Beckhoff

The AX5125-0000-02000 is a servo inverter produced by Beckhoff for the AX Digital Servo Drives series. Designed for cabinet mounting, the unit connects to 400 V AC supply networks and converts incoming electrical energy into a modulated output for precise motor control. It controls acceleration, speed, torque, and positioning on a single axis, making it suitable for feeders, gantries, and other automated stations that require coordinated motion. The inverter also supports regenerative operation by directing energy from a decelerating motor back to the DC link or braking circuit.

With a 400 V connection, the drive can deliver an apparent power of 17.3 kVA to the connected motor. The current loop supplies a nominal motor phase current of 25 A, while rapid indexing and other transient loads are supported by a peak current of 50 A for short periods. Internal power dissipation reaches 340 W, so the control cabinet must provide enough ventilation to keep the electronic components within their permitted temperature range. The DC link is rated for 875 VDC, providing an adequate insulation margin when regenerative energy returns from high-inertia loads. Eight digital inputs accept signals from limit switches, sensors, or sequence controls. The differential encoder interface supplies up to 250 mA per channel for connected feedback electronics.

The integrated brake chopper can divert up to 200 W into the internal braking resistor. An external resistor with a minimum resistance of 22 ? increases the available braking capacity to 32 kW, allowing the drive to decelerate heavy axes while reducing the risk of DC-link overvoltage. The IP20 housing restricts access to hazardous internal parts but requires installation inside a closed control cabinet. The aluminum enclosure measures 317.70 mm in height, 185 mm in width, and 232 mm in depth, allowing it to occupy a relatively narrow section of the cabinet. The module weighs 11 kg, which must be considered when selecting the mounting surface and cabinet supports. Its calculated semiconductor losses must also be included when determining the required airflow and cooling capacity for the panel.