Product Description:

The AX2506-B750 is a digital servo drive produced by Beckhoff as part of the AX Digital Servo Drives series. It converts DC bus energy into controlled three-phase output for a single motor and reports operating data to the central PLC. Designed as the power layer in multi-axis systems, the drive supports deterministic motion sequences in material handling, filling, or printing machinery. Beckhoff positions this model for midsize mechanics where tight speed loops and efficient cabinet use are priorities, linking seamlessly with the vendor’s TwinCAT environment.

Control performance centers on a current regulation loop that closes every 62.5 µs. The rapid cycle pairs with an output stage clock of 8 kHz to minimize ripple at the motor terminals. The drive delivers a continuous phase current of 6 A rms and can supply up to 12 A rms for short acceleration bursts before thermal limits engage. Command values arrive through a 14-bit differential analog input, giving 14-bit resolution for velocity or torque setpoints. Communication to the machine controller is provided by a SERCOS fiber-optic fieldbus, while a local RS232 service port supports diagnostics. Application sizing is aided by a 40 mH ceiling on load inductance and the ability to coordinate as many as seven axis modules through the common DC link. Heat produced under rated operation is removed by an add-on fan that handles the 60 W of load dissipation, while standby loss falls to 15 W.

Installation considerations revolve around power handling and protection thresholds. The shared DC supply may host drives up to a combined apparent power of 12 kVA, after which additional supply modules are required. An internal monitor disconnects the bridge when the link voltage reaches 450 V, safeguarding both semiconductors and connected motors. The output stage accommodates motor windings with inductances as low as 7.5 mH, making it suitable for compact stators that lack substantial leakage reactance. Its housing carries a protection category of IP20, so the device must be installed inside a closed electrical cabinet to maintain the stated protection level and cooling performance.