GE Fanuc IC660ELB905 & ABB 6227BZ10200D Power Module

Technical Dossier

Product Details And Specifications

GE Fanuc IC660 Series: Comprehensive Module Range and Technical Overview

The GE Fanuc Series 90-70 IC660 I/O module family is one of the most widely deployed distributed I/O platforms in global heavy industry. Installed across petrochemical refineries, nuclear power generation facilities, offshore platforms, and continuous-process chemical plants, the IC660 Series established the architectural standard for rack-based distributed I/O in the 1990s and remains operational in thousands of legacy DCS and PLC installations worldwide. The ABB 6227BZ10200D is a companion power supply module integrated into mixed-vendor control cabinets alongside GE Fanuc IC660 backplane assemblies, forming a combined power and I/O infrastructure common in brownfield plant environments.

The SKU 6227BZ10200D+IC660ELB905 represents a paired power module assembly: the ABB 6227BZ10200D provides regulated DC bus power, while the GE Fanuc IC660ELB905 functions as a Bus Expansion Module enabling multi-rack I/O extension within Series 90-70 architectures. This combination is critical for plants requiring extended I/O capacity beyond a single rack without introducing additional CPUs.

The Evolution of IC660 Series Architecture

The GE Fanuc Series 90-70 platform was introduced in the late 1980s as a high-density, rack-based programmable controller system designed to compete with Allen-Bradley PLC-5 and Siemens S5 in large-scale process control applications. The IC660 module designation specifically identifies the distributed I/O subsystem, which communicates with the Series 90-70 CPU rack via the Genius Bus (IC660 Bus Controller) or direct backplane connection.

Early IC660 modules (circa 1988–1995) used parallel backplane communication at 5V TTL logic levels. Mid-generation revisions (1995–2005) introduced enhanced diagnostics, field-replaceable fuse assemblies, and improved EMI shielding for compliance with IEC 61000-4 standards. The platform entered its maintenance phase around 2008 when GE Fanuc Automation was restructured into GE Intelligent Platforms (later Emerson Automation Solutions acquired the portfolio). No new IC660 hardware has been released since approximately 2010; the series is formally classified as End-of-Life (EOL) by the OEM, with no active production. Field replacement and long-term maintenance now depend entirely on aftermarket spare parts suppliers and certified refurbishers.

Compatibility note: IC660 modules are not electrically or mechanically interchangeable with the later GE Series 90-30 (IC693) or PACSystems RX7i (IC698) platforms. Rack, backplane, and bus controller versions must be matched precisely to avoid communication faults.

IC660 Series Full Catalog & Functionalities (SKU List)

Bus Controllers & Expansion

• IC660ELB905: Bus Expansion Module; extends Series 90-70 I/O bus to remote racks up to 50m.
• IC660CBB902: Genius Bus Controller; interfaces Series 90-70 CPU to Genius I/O field devices.
• IC660CBB903: Genius Bus Controller, enhanced diagnostics revision; replaces IC660CBB902.
• IC660CBB904: Genius Bus Controller with redundancy support for dual-bus configurations.

Discrete Input Modules (DI)

• IC660BBD100: 115VAC Discrete Input, 8-point; standard field wiring terminal block.
• IC660BBD101: 115VAC Discrete Input, 16-point; high-density rack configuration.
• IC660BBD020: 24VDC Discrete Input, 32-point; sourcing type, IEC 61131-2 compliant.
• IC660BBD021: 24VDC Discrete Input, 32-point; sinking type.
• IC660BBD110: 230VAC Discrete Input, 8-point; for high-voltage field signal environments.

Discrete Output Modules (DO)

• IC660BBD300: 115VAC Discrete Output, 8-point; triac output, 0.5A per point.
• IC660BBD301: 115VAC Discrete Output, 16-point; high-density triac output.
• IC660BBD020: 24VDC Discrete Output, 32-point; transistor sourcing output.
• IC660BBD022: Relay Output Module, 8-point; Form C contacts, 2A per point.

Analog Input Modules (AI)

• IC660BBA020: Analog Input, 4–20mA, 8-channel; 12-bit resolution.
• IC660BBA021: Analog Input, 0–10VDC, 8-channel; differential input configuration.
• IC660BBA100: Thermocouple Input Module, 8-channel; supports J, K, T, E, R, S, B types.

Analog Output Modules (AO)

• IC660BBA104: Analog Output, 4–20mA, 4-channel; 12-bit DAC, loop-powered.
• IC660BBA105: Analog Output, 0–10VDC, 4-channel; voltage output with short-circuit protection.

Power Supply (ABB Companion)

• ABB 6227BZ10200D: DC Power Supply Module; regulated 24VDC output, integrated into mixed-vendor IC660 cabinet assemblies.

Sourcing Hard-to-Find & Obsolete IC660 Series Parts

The IC660 Series reached official End-of-Life status with GE Intelligent Platforms. OEM factory repair, new-build production, and active technical support are no longer available through the original manufacturer or its successors. Plants operating Series 90-70 infrastructure face a defined sourcing challenge: the installed base remains large, but the supply of serviceable spare modules is finite and declining.

DriveKNMS maintains a dedicated inventory program for IC660 Series modules, including the IC660ELB905 Bus Expansion Module and ABB 6227BZ10200D power assemblies. Our sourcing network covers decommissioned plant equipment, certified refurbished stock, and new-old-stock (NOS) units recovered from original distributor warehouses. All units are catalogued by revision level and firmware version where applicable, ensuring compatibility with the customer's existing rack and backplane configuration.

For plants requiring multi-year maintenance contracts or scheduled replacement programs, DriveKNMS provides lifecycle extension agreements covering annual inspection, functional testing, and guaranteed stock reservation for critical IC660 module types.

Quality Control for the IC660 Series Range

IC660 modules present specific test challenges due to their backplane-dependent communication architecture. Functional verification requires a live Series 90-70 rack environment; bench-level power-on testing alone is insufficient to confirm bus communication integrity.

DriveKNMS applies the following test protocol to all IC660 Series units:

• Visual inspection: PCB examination for capacitor degradation, relay contact wear, and corrosion on edge connectors.
• Backplane bus communication test: Module is seated in a reference Series 90-70 rack and polled via Genius Bus Controller to confirm address assignment and data exchange.
• I/O point verification: Each discrete or analog channel is individually stimulated and measured against OEM specification tolerances.
• Power rail measurement: Internal 5V and 24V rails measured under load; ripple voltage checked against IEC 61131-2 limits.
• Burn-in cycle: 48-hour continuous operation at rated load prior to shipment.
• Revision documentation: Hardware revision label and firmware version recorded and included with shipment documentation.

ABB 6227BZ10200D power modules are tested independently on a calibrated DC load bank, with output voltage regulation, current limiting, and thermal shutdown functions verified before pairing with IC660 backplane assemblies.