GE IC693351-GT single-slot central processing unit (CPU) module

Description

In factories running material handling systems, packaging indexers, or simple process loops with GE Fanuc Series 90-30 PLCs, the GE IC693351-GT executes core ladder logic for sequencing motors, monitoring basic sensors, and handling operator commands without the overhead of larger CPUs. Operators interact through attached HMIs to start batches or acknowledge faults, while maintenance verifies its status LEDs during power cycles to confirm memory retention across outages. You’ll find it in compact control panels on conveyors, fillers, or small mixers, where cost-effective control suffices for up to 240 KB programs and moderate I/O counts without high-speed demands. In these environments, the GE IC693351-GT addresses needs like reliable scan times under 10 ms for discrete tasks, supporting serial communications for local HMIs or Modbus slaves. Engineers pick the GE IC693351-GT for control systems starting small but scalable to remote baseplates, applicable in industrial automation where budget trumps complexity.

The GE IC693351-GT is a single-slot central processing unit (CPU) module from the GE Fanuc Series 90-30 family, powered by an Intel 386EX microprocessor clocked around 25 MHz for balanced performance in mid-tier applications. It mounts in slot 1 of a standard CPU baseplate alongside power supplies and I/O receivers, managing program execution, I/O scanning, and data table housekeeping across local and remote racks. Within the 90-30 architecture, the GE IC693351-GT supports up to 240 KB user flash memory for logic storage, with battery-backed RAM for %M registers and timers, programmed via MS-DOS tools like Logicmaster or early Proficy Machine Edition. This GT revision likely includes firmware refinements for stability or expanded serial protocols, suiting legacy upgrades while preserving tag-based compatibility. Integrators value its straightforward %I/%Q/%AI/%AQ mapping and built-in SNP slave port for PC access, bridging basic discrete control with light analog needs.

The GE IC693351-GT delivers solid throughput for factory-floor tasks, with typical scan rates handling hundreds of rungs and 512 I/O points per rack, plus expansion to multiple baseplates over serial buses. Its embedded real-time clock stamps diagnostics, and password protection secures logic from unauthorized edits during runtime. Serial port defaults to SNP for configuration downloads, with optional Modbus RTU for third-party integration, while front LEDs signal power, OK/run status, and keyswitch positions for manual overrides.

Hardware focuses on reliability: conformal-coated boards endure 0-60 °C cabinets, drawing 1.1 A max at 5 V backplane with SuperCap memory backup lasting 6 months sans battery. Keyswitch enables RUN/STOP/PGM modes without tools, and no field wiring simplifies panel builds.​

Detailed Technical Specifications

Related Modules or Compatible Units

IC693PWR321 – Standard power supply for CPU baseplates housing GE IC693351-GT.
IC693CHS391 – 10-slot expansion baseplate extending I/O capacity.
IC693MDL645 – Discrete input module commonly paired in basic racks.
IC693ALG391 – Analog input module for process extensions.
IC693CPU374 – Higher-performance CPU upgrade path.

Install the GE IC693351-GT in slot 1 with fresh battery, key in RUN before power-up, and download logic via serial cable—verify scan time under load.

The GE IC693351-GT needs battery swaps every 2 years and firmware checks during outages, with fault tables cleared post-troubleshoot.