Beckhoff AX5000 Series Servo Drives

Technical Dossier

Product Details And Specifications

Beckhoff AX5000 Series: Comprehensive Module Range and Technical Overview

The Beckhoff AX5000 is a digital compact servo drive series engineered for high-precision motion control in heavy industrial environments. Deployed across chemical processing plants, nuclear power facilities, oil refineries, and large-scale manufacturing lines worldwide, the AX5000 series operates natively within the EtherCAT fieldbus ecosystem and integrates directly with Beckhoff TwinCAT automation software. Its modular architecture supports single- and multi-axis configurations, making it a standard reference platform for OEM machine builders and plant automation engineers requiring deterministic servo performance at industrial scale.

The Evolution of AX5000 Architecture

The AX5000 series was introduced by Beckhoff as a successor to earlier analog servo drive platforms, designed from the ground up around EtherCAT (IEC 61158) real-time communication. The first-generation AX5000 units established the core hardware platform: a DC bus architecture with shared power supply modules (AX5000 PSU), supporting axis modules from 1.5 A to 170 A continuous output current.

Over successive hardware revisions, Beckhoff expanded the series to include dual-axis modules (AX52xx), enabling two servo axes to share a single drive housing and DC bus connection — reducing cabinet footprint in multi-axis gantry and robotic applications. The introduction of the AX5801 safety option card added STO (Safe Torque Off) and SS1 (Safe Stop 1) functions compliant with IEC 62061 and ISO 13849-1, addressing the growing regulatory requirements in EU machinery directives.

Compatibility considerations: AX5000 drives require TwinCAT NC/PTP or TwinCAT NC I for motion task configuration. Firmware versions must be matched to TwinCAT build versions to avoid EtherCAT state machine errors. Older AX5000 units (hardware revision A/B) may require firmware migration before integration with TwinCAT 3.1 Build 4024 and later. Motor feedback interfaces support resolver, EnDat 2.1/2.2, HIPERFACE, and incremental encoder — compatibility must be verified per motor type before substitution.

AX5000 Full Catalog & Functionalities (SKU List)

Single-Axis Drive Modules

• AX5101-0000: Single-axis servo drive, 1.5 A continuous, 400 V AC input, EtherCAT
• AX5103-0000: Single-axis servo drive, 3 A continuous, 400 V AC, compact housing
• AX5106-0000: Single-axis servo drive, 6 A continuous, integrated brake chopper
• AX5112-0000: Single-axis servo drive, 12 A continuous, extended thermal rating
• AX5118-0000: Single-axis servo drive, 18 A continuous, high-dynamic axis control
• AX5125-0000: Single-axis servo drive, 25 A continuous, mid-range torque applications
• AX5140-0000: Single-axis servo drive, 40 A continuous, heavy-duty spindle/feed axis
• AX5160-0000: Single-axis servo drive, 60 A continuous, large servo motor interface
• AX5172-0000: Single-axis servo drive, 72 A continuous, high-power axis module
• AX5190-0000: Single-axis servo drive, 90 A continuous, industrial press/extruder axis

Dual-Axis Drive Modules

• AX5203-0000: Dual-axis servo drive, 2×3 A continuous, 400 V AC, EtherCAT, compact dual-axis
• AX5206-0000: Dual-axis servo drive, 2×6 A continuous, shared DC bus, reduced cabinet space
• AX5212-0000: Dual-axis servo drive, 2×12 A continuous, gantry and dual-feed axis use
• AX5218-0000: Dual-axis servo drive, 2×18 A continuous, high-dynamic dual-axis platform
• AX5225-0000: Dual-axis servo drive, 2×25 A continuous, multi-axis robotic cell integration

Power Supply & System Modules

• AX5000-PSU: Shared DC bus power supply unit for AX5000 multi-axis configurations
• AX5801-0000: Safety option card, STO/SS1 per IEC 62061, plug-in for AX51xx/AX52xx

Sourcing Hard-to-Find & Obsolete AX5000 Parts

Several AX5000 variants — particularly early hardware revision units (Rev. A/B) and lower-current single-axis modules — have reached end-of-production status with Beckhoff. Standard distribution channels no longer carry stock for these part numbers, and lead times through authorized resellers for in-production variants frequently exceed 16–26 weeks due to semiconductor supply constraints.

DriveKNMS maintains a dedicated inventory of AX5000 series modules sourced from decommissioned plant equipment, controlled factory overstock, and verified secondary market channels. All units are catalogued by hardware revision and firmware version. For end-users operating legacy AX5000 installations where a full drive replacement program is not feasible, DriveKNMS provides lifecycle extension support: supplying tested replacement modules, advising on firmware compatibility, and identifying functional cross-references within the AX5000 range where direct substitution is possible.

Quality Control for the AX5000 Range

AX5000 servo drives incorporate a multi-layer internal architecture: EtherCAT ASIC communication layer, DSP-based current control loop, IGBT power stage, and motor feedback interface circuits. Each of these subsystems requires independent verification before a unit is released for resale or plant redeployment.

DriveKNMS applies the following test protocol to all AX5000 units processed through its facility:

• DC Bus Integrity Check: Capacitor bank ESR measurement and charge/discharge cycle validation to confirm bus capacitance within OEM specification.
• EtherCAT Communication Test: Unit is connected to a TwinCAT test bench; EtherCAT state machine is cycled through INIT → PREOP → SAFEOP → OP states. Distributed Clock synchronization is verified.
• Current Loop Calibration Verification: Output current waveform is measured under resistive load at rated continuous and peak current. Phase balance and switching frequency are confirmed against AX5000 hardware specification.
• Feedback Interface Test: EnDat 2.2 and resolver feedback channels are exercised using a motor simulator. Position data integrity and error flag behavior are verified.
• Safety Function Test (AX5801): Where the safety option card is fitted, STO input response time is measured and logged against IEC 62061 SIL 2 requirements.
• Thermal Cycling: Units are operated through a controlled thermal cycle to identify latent solder joint or component failures not detectable under ambient-temperature static test.