AX2090-BW50-0300 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
The AX2090-BW50-0300 is a servo drive manufactured by Beckhoff as part of the AX Digital Servo Drives series. It provides 300 W of power at 40 °C and is protected to the IP20 standard. The drive weighs 2 kg and features shielded cabling with 16 AWG for the brake cable and a potential-free N/C contact type.
Internal Product Review
The AX2090-BW50-0300 is a Beckhoff braking resistor for AX Digital Servo Drives, rated at 300 W at 40 °C with 47 Ω resistance. A shielded cable layout and a potential-free N/C contact support clean integration and dependable thermal monitoring in motion-control cabinets. Strong electrical matching and service-friendly design make this unit a very capable choice for controlled braking duty.
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Product Description:
The AX2090-BW50-0300 is a passive braking resistor module produced by Beckhoff for the AX Digital Servo Drives series. Within multi-axis automation, it converts surplus kinetic energy from decelerating servo motors into heat, preventing overvoltage in the DC link and allowing controlled stops during emergency braking. By wiring directly to the drive’s brake output, the unit protects both the inverter and the mechanical load, making it a standard accessory in conveyor, packaging, and positioning cells.
At an ambient temperature of 40 °C, the resistor can dissipate 300 W, which is its continuous thermal limit for repetitive braking cycles. The housing carries an IP20 protection class, so it must be installed inside a cabinet where accidental contact with live parts is avoided. Brake energy reaches the element through a 16 AWG conductor that provides a cross-section of 1.5 mm², and the cable is shielded to reduce electromagnetic coupling with neighboring servo wiring. Temperature feedback uses a separate 18 AWG lead with a 0.75 mm² cross-section, and the feedback path is routed through a potential-free N/C contact that opens when the internal sensor exceeds its switching threshold. This arrangement lets the drive disconnect the brake path and issue a fault before the module overheats.
The resistive element presents 47 Ω to the DC bus, producing a predictable current curve during each braking pulse. When the integrated thermostat reaches 180 °C, its normally closed switch opens and can interrupt up to 2 A of signaling current from the safety circuit. These values allow the drive to calculate pulse width, duty cycle, and maximum deceleration torque without risking thermal runaway. Despite the steel housing and ceramic core, overall mass is limited to 2 kg, permitting panel installation without extra support brackets.
