FAGOR AXD Series Servo Drives

Technical Dossier

Product Details And Specifications

FAGOR AXD Series: Comprehensive Module Range and Technical Overview

The FAGOR AXD Series represents a family of digital AC servo drives engineered for precision motion control in heavy industrial environments. Deployed extensively across chemical processing plants, nuclear facilities, oil refineries, and large-scale CNC machining centers, the AXD platform has established a significant installed base in European and Asian industrial automation infrastructure. These drives interface directly with FAGOR CNC systems (8055, 8065, 8070 families) via the SERCOS and FAGOR proprietary bus architectures, providing closed-loop torque, velocity, and position control for synchronous AC servo motors. The series covers output current ratings from 2.5 A to 100 A continuous, accommodating a broad range of spindle and axis motor configurations in multi-axis machine tool applications.

The Evolution of AXD Series Architecture

The AXD Series was introduced as FAGOR's transition from analog servo amplifier technology to fully digital drive architecture. Early-generation AXD units relied on parallel I/O command interfaces and analog ±10 V reference inputs, compatible with FAGOR 8025 and 8030 CNC platforms. As the series matured, FAGOR integrated SERCOS I fiber-optic ring communication, enabling deterministic real-time position loop closure at the drive level and eliminating analog noise susceptibility in long cable runs typical of large machining centers.

Subsequent hardware revisions introduced enhanced DSP processing for adaptive current loop tuning, expanded fault diagnostics via front-panel LED arrays and serial port readout, and compatibility with the FAGOR 8055 and 8065 CNC generations. The AXD architecture uses a modular DC bus design: a central power supply module (PS series) feeds a shared DC link rail, from which individual AXD axis modules draw power. This topology reduces component count and simplifies cabinet wiring in multi-axis configurations of 2 to 8 axes.

By the mid-2010s, FAGOR Automation entered insolvency proceedings, and the AXD Series transitioned into end-of-life status with no new production. The installed base, however, remains active across thousands of machine tools globally, creating sustained demand for spare and replacement units. Compatibility between AXD hardware revisions requires careful firmware version matching, particularly for drives interfacing with 8065 and 8070 CNC systems that use updated SERCOS II or Ethernet-based motion bus variants.

AXD Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the FAGOR AXD Series, classified by functional category and current rating:

Axis Servo Drive Modules — Low Current (≤10 A)

• AXD1.25-S0-0: 2.5 A continuous axis servo drive, single-axis, SERCOS interface, 230/400 V AC input
• AXD1.50-S0-0: 5.0 A continuous axis servo drive, single-axis, SERCOS interface, standard DC bus connection
• AXD1.75-S0-0: 7.5 A continuous axis servo drive, single-axis, SERCOS interface, enhanced thermal management
• AXD1.100-S0-0: 10 A continuous axis servo drive, single-axis, SERCOS interface, compatible with FM7 motor family

Axis Servo Drive Modules — Medium Current (15–35 A)

• AXD1.150-S0-0: 15 A continuous axis servo drive, single-axis, SERCOS, suitable for high-inertia axis applications
• AXD1.200-S0-0: 20 A continuous axis servo drive, single-axis, SERCOS, DC bus shared rail architecture
• AXD1.250-S0-0: 25 A continuous axis servo drive, single-axis, SERCOS interface, standard cabinet mount
• AXD1.350-S0-0: 35 A continuous axis servo drive, single-axis, SERCOS, high-dynamic torque response

Axis Servo Drive Modules — High Current (50–100 A)

• AXD1.500-S0-0: 50 A continuous axis servo drive, single-axis, SERCOS, spindle-capable output stage
• AXD1.750-S0-0: 75 A continuous axis servo drive, single-axis, SERCOS, heavy-duty spindle and axis use
• AXD1.1000-S0-0: 100 A continuous axis servo drive, single-axis, SERCOS, maximum current AXD platform

Spindle Drive Modules

• SPD1.250-S0-0: 25 A spindle drive, SERCOS interface, compatible with AXD DC bus rail, asynchronous motor control
• SPD1.500-S0-0: 50 A spindle drive, SERCOS interface, vector control mode, shared DC bus
• SPD1.750-S0-0: 75 A spindle drive, SERCOS interface, high-power spindle applications, regenerative braking support

Power Supply Modules (DC Bus)

• PS-25A: 25 A DC bus power supply module, feeds AXD axis drive rail, 400 V AC three-phase input
• PS-50A: 50 A DC bus power supply module, supports multi-axis AXD configurations up to 4 axes
• PS-100A: 100 A DC bus power supply module, large multi-axis cabinet configurations, regenerative capable

Sourcing Hard-to-Find & Obsolete AXD Series Parts

Following FAGOR Automation's cessation of manufacturing operations, the AXD Series entered permanent end-of-life status. No new units are produced, and OEM factory support is no longer available. DriveKNMS maintains a dedicated inventory of tested AXD Series drives sourced from decommissioned machine tools, factory overstock, and authorized secondary market channels across Europe and Asia.

For machine operators and maintenance engineers managing FAGOR-equipped assets, DriveKNMS provides the following lifecycle extension services for the AXD platform:

• Direct replacement units for all current ratings from 2.5 A to 100 A
• Cross-reference matching between AXD hardware revisions and firmware compatibility verification
• Emergency same-day dispatch for critical production downtime situations
• Long-term supply agreements for facilities managing fleets of FAGOR CNC machines
• Technical consultation on migration paths to compatible third-party servo drive platforms where AXD stock is exhausted

All units are inspected, tested, and shipped with documentation of test results. DriveKNMS does not list units that have not passed functional verification against AXD Series electrical specifications.

Quality Control for the AXD Series Range

The AXD Series drive architecture presents specific test requirements due to its integrated DC bus topology and SERCOS fiber-optic communication interface. DriveKNMS applies the following verification procedures to all AXD units prior to dispatch:

• DC Bus Capacitor ESR Test: Measurement of equivalent series resistance on DC link capacitor banks to identify degraded capacitance that causes voltage ripple and drive fault conditions under load
• IGBT Gate Drive Integrity Check: Static and dynamic gate signal verification on all output phase IGBT modules to confirm switching performance within AXD specification
• SERCOS Interface Loopback Test: Fiber-optic transmitter/receiver power level measurement and protocol loopback verification to confirm communication integrity before installation
• Current Loop Calibration Verification: Confirmation that internal current feedback scaling matches factory calibration parameters for the rated output current of the specific AXD model
• Thermal Management Inspection: Heatsink condition assessment, fan operation verification, and thermal interface material inspection on all units
• Fault Log Clearance and Firmware Version Documentation: Non-volatile fault memory cleared and firmware version recorded for compatibility reference with target CNC system