ANSALDO ELC Series Modules ELC260491 + ELC260590

Technical Dossier

Product Details And Specifications

ANSALDO ELC Series Technical Notes

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

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.