ANSALDO ELC Series Modules: ELC260491 + ELC260590

Technical Dossier

Product Details And Specifications

ANSALDO ELC Series: Comprehensive Module Range and Technical Overview

The ANSALDO ELC Series represents a core product line within ANSALDO's programmable logic controller (PLC) and distributed control system (DCS) portfolio, deployed extensively across global heavy industry sectors including petrochemical refineries, nuclear power stations, offshore platforms, and large-scale chemical processing facilities. These modules were engineered to meet the stringent reliability and deterministic response requirements of continuous-process industries, where unplanned downtime carries significant operational and safety consequences. The ELC Series established a long-term installed base across European and Asian industrial infrastructure throughout the 1990s and 2000s, and a substantial number of these systems remain in active service today, creating sustained demand for original spare parts, tested replacements, and lifecycle extension support.

The Evolution of ELC Series Architecture

The ANSALDO ELC architecture was developed as a modular, rack-based control platform designed for deterministic scan-cycle execution in safety-critical environments. Early ELC configurations relied on parallel backplane communication with fixed-address I/O mapping, providing predictable latency suitable for process interlocking applications. As industrial communication standards evolved, later ELC variants incorporated fieldbus-compatible interface modules supporting PROFIBUS-DP and Modbus RTU, enabling integration with SCADA layers and third-party instrumentation without full system replacement.

The CPU modules within the ELC Series progressed from single-processor architectures with limited on-board memory to dual-redundant configurations with hot-standby failover, addressing the high-availability requirements of nuclear and refinery applications. Power supply modules evolved in parallel, moving from single-rail 24VDC designs to multi-rail architectures with internal diagnostics and fault isolation. Compatibility between ELC generations is constrained by backplane bus protocol versions; mixing early-generation I/O modules with later CPU firmware revisions requires careful validation against ANSALDO's compatibility matrices. As the ELC Series has entered its end-of-life and obsolescence phase, no new firmware updates or hardware revisions are being issued by the OEM, making verified spare parts inventory the primary support mechanism for installed systems.

ELC Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the ANSALDO ELC Series, classified by functional category. Each entry reflects the module's primary role within a rack-based ELC system configuration.

CPU & Processor Modules

• ELC260491: Dual-redundant CPU module, hot-standby failover, rack-mount configuration
• ELC260590: Co-processor or paired CPU module for redundant ELC260491 system architecture
• ELC260100: Base CPU module, single-processor, standard scan-cycle execution
• ELC260110: Enhanced CPU with extended on-board RAM and expanded program memory
• ELC260120: High-availability CPU variant with integrated watchdog and self-diagnostics

Digital Input (DI) Modules

• ELC260200: 16-channel 24VDC digital input module, isolated, rack-mount
• ELC260210: 32-channel digital input module, high-density, 24VDC logic level
• ELC260220: 16-channel 120VAC digital input module for field device interfacing

Digital Output (DO) Modules

• ELC260300: 16-channel 24VDC digital output module, transistor sourcing type
• ELC260310: 16-channel relay output module, dry contact, 2A per channel
• ELC260320: 32-channel digital output module, high-density, 24VDC sink/source

Analog Input (AI) Modules

• ELC260400: 8-channel analog input, 4–20mA / 0–10V selectable, 12-bit resolution
• ELC260410: 16-channel analog input module, differential inputs, 14-bit resolution
• ELC260420: Thermocouple input module, 8-channel, J/K/T/E type, cold-junction compensated

Communication & Fieldbus Adapter Modules

• ELC260500: PROFIBUS-DP master/slave communication adapter, 12Mbps
• ELC260510: Modbus RTU/ASCII serial communication module, RS-485 interface
• ELC260520: Ethernet TCP/IP communication module for SCADA integration

Power Supply Modules

• ELC260600: 24VDC rack power supply module, 10A output, redundancy-capable
• ELC260610: Redundant power supply module, hot-swap, internal fault diagnostics

Sourcing Hard-to-Find & Obsolete ELC Series Parts

The ANSALDO ELC Series has been formally discontinued by the OEM, with no active production, repair depot support, or firmware updates available through standard distribution channels. For operators of installed ELC-based systems, the only viable path to maintaining system integrity is sourcing verified surplus, refurbished, or new-old-stock (NOS) modules from specialist industrial parts suppliers.

DriveKNMS maintains a dedicated inventory program for ANSALDO ELC Series modules, with particular focus on high-demand CPU and I/O modules including ELC260491 and ELC260590. Our sourcing network spans authorized surplus dealers, decommissioned plant asset recovery, and direct OEM channel remnants. All ELC modules in our inventory are catalogued with traceability records including date codes, firmware revision labels where visible, and physical condition assessments. For operators planning long-term maintenance windows or full system shutdowns, DriveKNMS can provide bulk reservation agreements to secure critical spare quantities in advance.

Quality Control for the ELC Series Range

ANSALDO ELC modules present specific testing challenges due to their proprietary backplane bus protocol and the absence of publicly available diagnostic software from the OEM. DriveKNMS applies a structured multi-stage inspection and functional verification process to all ELC Series modules prior to dispatch.

Physical inspection covers PCB condition, capacitor health, connector pin integrity, and label legibility. Electrical testing verifies supply rail voltages, isolation resistance between signal and power commons, and output driver functionality for DO modules. For CPU modules including ELC260491 and ELC260590, functional verification is performed using a dedicated ELC rack test bench that replicates the backplane bus environment, confirming module initialization, memory read/write integrity, and communication handshake with adjacent I/O modules. Communication modules are tested for protocol compliance using protocol analyzers on PROFIBUS and Modbus interfaces. All tested modules are issued a DriveKNMS inspection certificate with test date, technician ID, and pass/fail criteria documentation.

For sourcing inquiries, bulk orders, or technical compatibility questions regarding ANSALDO ELC Series modules:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com