GE Series 90-30 IC694 Modules IC694PWR321B Power Supply

Technical Dossier

Product Details And Specifications

GE Series 90-30 IC694 Series Technical Notes

The GE Series 90-30 (IC694 platform) is one of the most widely deployed programmable logic controller families in global heavy industry. Installed across petrochemical complexes, nuclear power auxiliary systems, refinery distributed control architectures, and continuous-process manufacturing plants, the Series 90-30 established a benchmark for modular, rack-based PLC design throughout the 1990s and 2000s. Its backplane bus architecture supports mixed I/O configurations across a single rack, enabling engineers to build compact yet scalable control nodes without dedicated communication bridges. The IC694 designation specifically identifies the standard-voltage, rack-mount variant of the Series 90-30 family, distinguishing it from the IC693 (earlier revision) and IC695 (RX3i, next-generation) platforms. Facilities running Series 90-30 infrastructure represent a significant installed base that continues to require original-specification spare parts for maintenance, emergency replacement, and lifecycle extension programs.

The Evolution of IC694 Architecture

The Series 90-30 architecture was introduced by GE Fanuc Automation in the early 1990s as a successor to the Series Six and Series Five PLC families. The original IC693 platform established the physical rack format and I/O bus protocol. The IC694 revision introduced enhanced CPU processing speeds, expanded memory addressing, and improved noise immunity on the backplane, while maintaining backward physical compatibility with IC693 racks and most I/O modules — a critical design decision that protected existing plant wiring investments.

Through the late 1990s, GE Fanuc expanded the IC694 catalog with high-density I/O modules, specialty function modules (motion, PID, communications), and redundant CPU configurations. The platform reached peak deployment circa 2000–2008. Following GE's acquisition of Fanuc's automation division stake and subsequent rebranding to GE Intelligent Platforms (later GE Automation & Controls), the Series 90-30 entered a managed lifecycle phase. The IC695 RX3i platform was introduced as the strategic successor, offering a PCI-based backplane, higher-speed CPUs, and Ethernet-native communications — while maintaining a software migration path from Series 90-30 via Proficy Machine Edition.

IC694 Full Catalog & Functionalities (SKU List)

The following catalog numbers represent verified, commonly deployed IC694 series modules. Each entry reflects the module's primary function within a Series 90-30 rack configuration.

Power Supply Modules

• IC694PWR321B: 120/240VAC input, 30W rack power supply, standard Series 90-30 baseplate
• IC694PWR330D: 24VDC input, 30W isolated power supply for DC-powered panels
• IC694PWR331D: 24VDC input, high-capacity 40W power supply, extended I/O rack support

CPU Modules

• IC694CPU310: Entry-level CPU, 6K logic program memory, Series 90-30 base controller
• IC694CPU311: Mid-range CPU, 12K program memory, expanded register table
• IC694CPU313: Enhanced CPU, 80K program memory, floating-point math support
• IC694CPU323: High-performance CPU, 240K program memory, Ethernet-ready via slot module
• IC694CPU364: Embedded Ethernet CPU, 240K program memory, onboard 10/100 Ethernet port
• IC694CPU374: Top-tier Series 90-30 CPU, 512K program memory, dual Ethernet, hot-standby redundancy capable

Discrete Input Modules

• IC694MDL230: 8-point 120VAC discrete input module
• IC694MDL240: 16-point 120VAC discrete input module, standard density
• IC694MDL241: 16-point 24VDC positive-logic discrete input module
• IC694MDL260: 32-point 24VDC discrete input, high-density I/O expansion

Discrete Output Modules

• IC694MDL330: 8-point 120VAC relay output module, 2A per point
• IC694MDL340: 16-point 120VAC discrete output module
• IC694MDL754: 32-point 24VDC transistor output, high-density sourcing

Analog I/O Modules

• IC694ALG220: 4-channel analog voltage/current input, 12-bit resolution
• IC694ALG221: 4-channel analog current input, 4–20mA, isolated
• IC694ALG390: 4-channel analog output, voltage/current configurable
• IC694ALG391: 8-channel analog output, high-channel-count process control

Communications & Specialty Modules

• IC694CMM302: Serial communications module, RS-232/RS-485, ASCII/RTU/SNP protocols
• IC694CMM321: Ethernet interface module, 10BaseT, legacy network integration
• IC694DSM314: 4-axis motion control module, stepper/servo positioning
• IC694APU300: High-speed counter / pulse accumulator module

Sourcing Hard-to-Find & Obsolete IC694 Parts

For critical spares programs, DriveKNMS can provide multi-unit lot pricing, consignment inventory arrangements, and documented traceability records suitable for regulated industries including nuclear auxiliary systems and pharmaceutical manufacturing. Customers operating under IEC 61511 or ISA-84 functional safety frameworks can request test documentation packages for safety-instrumented system (SIS) spare parts.