Product Description:

The AX5911-0000 is a power distribution module produced by Beckhoff for the AX Digital Servo Drives series. Mounted at the left edge of a drive lineup, it links the DC-link, control voltage, and mains rails to downstream inverters, offering a compact alternative to separate copper bars. The shared bus reduces panel depth, shortens wiring, and lets each axis return or draw energy as needed during coordinated motion.

The module carries a continuous bus current of 85 A, so the shared link can supply several high-power servo amplifiers without exceeding its thermal limits. Mechanical installation follows the Quick Connection system; the housing slides onto the drive stack and engages with spring-loaded conductors instead of screw-clamped wiring. The module uses 3 laminated copper sliders, so positive, negative, and protective-earth rails are guided separately for low impedance. The housing is pluggable, so it can be removed for service without disturbing adjacent units. Field power enters through plug contact X01, which is keyed to prevent reversal and includes an integrated coding pin for voltage class differentiation.

Additional feeds are separated by plug contacts X02 and X03, allowing the installer to route the DC-link return and the 24 V control supply on dedicated terminals. During assembly, the retaining screws on each contact block are secured at 2.2 Nm; adherence to this torque prevents conductor creep while avoiding thread damage. These terminals separate the power supply, DC-link, and control-voltage functions, so one circuit can be de-energized without disturbing the others during staged lockout procedures. The module keeps the same thermal expansion profile as neighboring inverters, so alignment is preserved across temperature cycles, a consideration that reinforces Beckhoff guidelines for dense multi-axis cabinets.