Fagor 8055i Series CNC Modules

Technical Dossier

Product Details And Specifications

Fagor 8055i Series: Comprehensive Module Range and Technical Overview

The Fagor 8055i is a compact, panel-mount CNC control system developed by Fagor Automation (Spain) for integration into machine tools operating in demanding industrial environments. It has accumulated significant installed base across heavy industry sectors including petrochemical processing plants, nuclear facility maintenance workshops, offshore platform equipment, and oil refinery tooling departments. The 8055i series is the ruggedized, integrated-panel variant of the broader Fagor 8055 family, designed for direct front-panel mounting with IP54-rated enclosures. Its architecture supports milling, lathe, and grinding applications, making it one of the most versatile compact CNCs deployed in MRO (Maintenance, Repair & Overhaul) environments globally.

The Evolution of 8055i Architecture

The Fagor 8055 platform was introduced in the mid-1990s as a successor to the 8050 series, targeting mid-range CNC applications. The 8055i variant introduced integrated operator panel hardware, consolidating the display, keyboard, and control logic into a single front-panel unit — eliminating the separate monitor and keyboard enclosures required by the 8055 base model.

Key architectural generations:

• 8055i (Original, ~1998–2005): CRT-based display, ISA-bus internal architecture, RS-232/RS-422 communications. Compatible with Fagor servo drives of the AXD and SPD families.
• 8055i/A (2003–2010): Transitioned to TFT flat-panel display. Introduced Ethernet option card. Retained backward compatibility with 8055 PLC ladder programs. The 8055i/A-M-COL-K belongs to this generation — it is the milling-configuration (M), color TFT (COL), keyboard-integrated (K) variant.
• 8055i/B (2008–2015): USB host port added. Expanded PLC I/O capacity. Improved axis interpolation performance. Introduced HSSA (High Speed Surface Accuracy) option.
• 8055i/D (2012–2018): Final production generation. 64-bit internal processing. Ethernet standard. Compatible with Fagor 8070 migration path via parameter export utilities.

The entire 8055i family reached end-of-production (EOP) status by approximately 2018–2020. Fagor Automation itself entered insolvency proceedings in 2013, with production and support subsequently transferred to associated entities. As a result, the 8055i series is now firmly in the obsolete / long-term maintenance phase of its lifecycle. Sourcing genuine spare units and subassemblies requires specialist distributors with legacy inventory.

Fagor 8055i Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Fagor 8055i platform. Units are categorized by functional role.

Operator Panel / Display Units (Integrated CNC Controls)

• 8055i/A-M-COL-K: Milling CNC, color TFT display, integrated keyboard panel, A-generation hardware
• 8055i/A-T-COL-K: Lathe (turning) CNC, color TFT display, integrated keyboard, A-generation
• 8055i/A-M-MON-K: Milling CNC, monochrome display variant, integrated keyboard
• 8055i/A-T-MON-K: Lathe CNC, monochrome display, integrated keyboard panel
• 8055i/B-M-COL-K: Milling CNC, color TFT, B-generation, USB port, expanded I/O
• 8055i/B-T-COL-K: Lathe CNC, color TFT, B-generation hardware platform
• 8055i/B-M-COL-K-HSSA: Milling CNC with High Speed Surface Accuracy interpolation option
• 8055i/D-M-COL-K: Milling CNC, D-generation, 64-bit processing, Ethernet standard
• 8055i/D-T-COL-K: Lathe CNC, D-generation, final production revision

Axis Drive Interface & Servo Communication Modules

• 8055i-AXD/25: Analog axis drive interface, 25A servo amplifier module, compatible with 8055i/A and /B
• 8055i-AXD/50: Analog axis drive interface, 50A servo amplifier module
• 8055i-SPD/1.25: Spindle drive module, 1.25 kW, integrated with 8055i PLC spindle control
• 8055i-SPD/5.5: Spindle drive module, 5.5 kW, for heavier spindle loads

I/O Expansion & Communication Modules

• 8055i-IOCAN: CANopen I/O expansion module, extends PLC digital I/O capacity via CAN bus
• 8055i-PROFIBUS: PROFIBUS-DP slave adapter for integration into Siemens or ABB DCS environments
• 8055i-ETHOPT: Ethernet option card (A-generation retrofit), enables DNC file transfer and remote diagnostics
• 8055i-RS485: RS-485 serial communication adapter for legacy peripheral connectivity

Power Supply Units

• 8055i-PSU/24V: 24 VDC internal power supply module for 8055i panel systems
• 8055i-PSU/48V: 48 VDC power supply variant for high-current axis configurations

Sourcing Hard-to-Find & Obsolete 8055i Parts

With Fagor Automation's production of the 8055i series concluded, the primary challenge for maintenance engineers is locating verified, functional units — particularly for unplanned machine-down situations. DriveKNMS maintains a dedicated inventory of Fagor 8055i spare parts sourced through authorized legacy channels, decommissioned machine buybacks, and certified refurbishment programs.

DriveKNMS provides the following lifecycle extension services for the 8055i platform:

• Exchange program: Faulty 8055i operator panels accepted for credit against replacement units.
• Parameter backup & restore: CNC parameter files archived and restored during unit replacement to minimize machine reconfiguration time.
• Cross-reference support: Identification of compatible replacement units where original SKUs are no longer available (e.g., 8055i/A → 8055i/B parameter migration).
• Long-lead procurement: Global sourcing network for low-volume, high-specificity SKUs including display assemblies, keyboard membranes, and backplane connectors.

Quality Control for the 8055i Range

The Fagor 8055i operator panel integrates display electronics, PLC processor, axis interpolation hardware, and operator keyboard into a single backplane assembly. This integration increases functional density but also requires comprehensive multi-subsystem testing before any unit is shipped.

DriveKNMS applies the following test protocol to all 8055i units:

• Power-on self-test (POST) verification: Confirms internal CPU boot sequence, memory integrity check, and PLC watchdog initialization.
• Display functional test: Full-screen pixel mapping for TFT panels; contrast and brightness calibration for monochrome units.
• Keyboard matrix scan: All operator keys tested for contact resistance and debounce response.
• Axis communication loopback: Simulated servo drive communication via AXD interface to verify encoder feedback processing.
• PLC I/O functional test: Digital input/output channels verified at rated voltage (24 VDC) with load simulation.
• Serial & Ethernet port test: RS-232, RS-422, RS-485, and Ethernet ports tested for signal integrity and protocol handshake.
• Thermal soak: Units operated at 45°C ambient for 4 hours to screen latent component failures.
• Final parameter load: Factory default parameter set loaded and verified prior to packaging.