GE Series 90-30 IC693 Modules - IC693ALG220G

Technical Dossier

Product Details And Specifications

GE Series 90-30 IC693 Series: Comprehensive Module Range and Technical Overview

The GE Fanuc Series 90-30 (IC693) programmable logic controller platform is one of the most widely deployed mid-range DCS/PLC architectures in global heavy industry. Installed across petrochemical complexes, nuclear power auxiliary systems, crude oil refineries, pulp and paper mills, and municipal water treatment facilities, the IC693 rack-based architecture has accumulated decades of field runtime in safety-critical and continuous-process environments. Its modular backplane design — supporting 5-slot, 10-slot, and expansion rack configurations — allows system integrators to construct highly granular I/O trees without replacing the CPU core. As of 2026, the IC693 series is in its mature/end-of-life phase; GE Vernova (formerly GE Digital / GE Automation) has transitioned primary development to the RX3i (IC695) platform. However, the installed base of IC693 hardware remains substantial, and replacement modules remain operationally critical for facilities that cannot justify a full control system migration.

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The Evolution of IC693 Architecture

The Series 90-30 platform was introduced by GE Fanuc Automation in the late 1980s as a successor to the Series Six and Series Five PLC families. The original IC693CPU311 and IC693CPU313 modules established the foundational instruction set and rack communication protocol. Through the 1990s, GE Fanuc expanded the catalog with high-density I/O modules, analog signal conditioning boards, and Ethernet/serial communication adapters to meet the demands of SCADA integration. The IC693CPU364 and IC693CPU374 introduced embedded Ethernet ports, eliminating the need for a dedicated CMM module in networked installations. The IC693 backplane uses a proprietary parallel bus architecture operating at 5 VDC logic levels; this bus is electrically incompatible with the later IC695 (RX3i) VME-based backplane, meaning IC693 and IC695 modules cannot be intermixed in the same rack without a dedicated IC695CHS007 mixed-rack carrier. Firmware compatibility between CPU generations is a known integration constraint: IC693CPU311/313 CPUs cannot execute ladder logic compiled for IC693CPU374 targets without recompilation. For facilities running legacy IC693CPU331 or IC693CPU340 controllers, sourcing tested replacement units is the primary lifecycle challenge, as GE Vernova no longer manufactures these part numbers.

IC693 Full Catalog & Functionalities (SKU List)

Analog Input Modules (AI)

• IC693ALG220G: 4-ch analog voltage/current input, 12-bit resolution, 0–10 V / 4–20 mA selectable per channel
• IC693ALG221: 4-ch analog current input, 12-bit, 4–20 mA, single-ended, rack-powered
• IC693ALG222: 16-ch analog voltage input, 12-bit, high-density single-ended configuration
• IC693ALG223: 16-ch analog current input, 12-bit, 4–20 mA, high-density rack module
• IC693ALG390: 4-ch thermocouple/mV input, cold-junction compensation, J/K/T/E/R/S/B type support
• IC693ALG391: 4-ch RTD input, Pt100/Ni120, 3-wire configuration, temperature linearization onboard

Analog Output Modules (AO)

• IC693ALG390D: 2-ch analog voltage/current output, 12-bit, ±10 V / 4–20 mA selectable
• IC693ALG392: 2-ch analog current output, 12-bit, 4–20 mA, isolated outputs
• IC693ALG442: 4-ch analog output, 12-bit, voltage and current configurable per channel

Digital Input Modules (DI)

• IC693MDL230: 8-ch 120 VAC discrete input, isolated, standard rack module
• IC693MDL240: 16-ch 120 VAC discrete input, non-isolated, high-density
• IC693MDL632: 16-ch 24 VDC positive logic discrete input, sink-type, standard density
• IC693MDL634: 32-ch 24 VDC discrete input, high-density, positive logic
• IC693MDL645: 16-ch 24 VDC discrete input, negative logic (source-type), isolated groups

Digital Output Modules (DO)

• IC693MDL330: 8-ch 120/240 VAC relay output, 2 A per point, Form A contacts
• IC693MDL740: 16-ch 24 VDC positive logic discrete output, 0.5 A per point, transistor
• IC693MDL752: 32-ch 24 VDC discrete output, high-density, transistor, positive logic

CPU Modules

• IC693CPU311: Base CPU, 6 KB user memory, serial port, no Ethernet, Series 90-30 entry-level
• IC693CPU331: 32 KB user memory, floating-point math, expanded I/O support
• IC693CPU340: 240 KB user memory, embedded serial, supports up to 8 expansion racks
• IC693CPU364: 240 KB user memory, embedded 10/100 Ethernet port, SRTP protocol
• IC693CPU374: 512 KB user memory, embedded dual Ethernet, high-speed counter support

Communication & Adapter Modules

• IC693CMM311: Serial communications module, RS-232/RS-485, SNP/SNPX/RTU Modbus
• IC693CMM321: Ethernet interface module, 10 Mbps, SRTP, Modbus TCP, legacy rack installations
• IC693BEM331: Remote I/O bus expansion master, controls up to 7 expansion racks

Power Supply Modules (PS)

• IC693PWR321: 120/240 VAC input power supply, 30 W output, standard 5-slot and 10-slot racks
• IC693PWR322: 24 VDC input power supply, 30 W, for DC-powered panel installations
• IC693PWR330: High-capacity 120/240 VAC power supply, 40 W, for fully populated 10-slot racks

Sourcing Hard-to-Find & Obsolete IC693 Parts

DriveKNMS maintains a dedicated inventory program for Series 90-30 IC693 hardware. As GE Vernova has formally discontinued manufacturing for the majority of IC693 catalog numbers, the global supply of new-in-box units is finite and declining. DriveKNMS sources IC693 modules through authorized surplus channels, decommissioned plant buybacks, and controlled factory-refurbishment pipelines. All units are cataloged by revision letter (e.g., IC693ALG220G suffix G denotes the seventh hardware revision) and stored in ESD-safe, climate-controlled facilities. For end-users operating facilities under long-term service agreements (LTSA) or operating under regulatory frameworks that prohibit control system replacement without re-validation (e.g., nuclear auxiliary systems under 10 CFR 50), DriveKNMS provides multi-year supply reservation contracts for critical IC693 part numbers. Customers requiring documentation packages — including original GE Fanuc datasheet archives, revision change notices, and firmware compatibility matrices — can request these alongside hardware orders.

Quality Control for the IC693 Range

IC693 modules present specific test challenges due to their parallel backplane bus architecture and mixed analog/digital signal paths. DriveKNMS applies the following verification protocol to all IC693 units prior to shipment. Each module is powered in a live IC693 test rack using an IC693PWR321 supply and an IC693CPU364 controller running a dedicated diagnostic ladder program. For analog input modules (IC693ALG series), all input channels are exercised across the full engineering range using a calibrated signal source (Fluke 725 or equivalent); channel-to-channel isolation resistance is verified at greater than 10 MOhm. For digital I/O modules (IC693MDL series), all discrete points are toggled and verified against the CPU I/O image table. Communication modules (IC693CMM series) are tested for SRTP and Modbus TCP connectivity using a live Ethernet segment. CPU modules are loaded with a standardized test program that exercises floating-point math, high-speed counter inputs, and serial port loopback. All units that pass are issued a DriveKNMS test certificate with technician ID, test date, rack serial number, and measured parameters. Units that fail are quarantined and not returned to inventory.

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© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.