GE Series 90-30 IC693CPU372 133MHz CPU Module 120KB Memory

GE Fanuc Series 90-30 IC693CPU372 Overview

The GE Fanuc IC693CPU372 is a high-performance, single-slot central processing unit engineered for the versatile Series 90-30 Programmable Logic Controller (PLC) system. Designed to deliver advanced processing power and faster response times for complex industrial automation architectures, this module installs directly into the dedicated CPU slot of a standard Series 90-30 baseplate. By utilizing a compact single-slot form factor, it preserves critical chassis real estate for specialized local I/O and communication cards. The IC693CPU372 features a light physical footprint with a net hardware weight of 0.5 kg (approx. 1.1 lbs), combining robust mechanical reliability with ease of integration into modern and retrofitted control enclosures. Operating on an internal backplane logic current draw of 1.4 Amps at 5.0 Volts DC, this module offers a highly responsive, high-capacity solution for demanding machine automation and distributed process control networks.

Core Technical Features & Architecture

Advanced Processing & High-Speed Execution

At the core of the IC693CPU372 module is a powerful 133 MHz AMD SC520 microprocessor, which significantly reduces execution latency for mathematical operations and advanced algorithmic sorting. It achieves an exceptionally fast typical scan rate of 0.15 milliseconds per 1K (kilobit) of Boolean logic, ensuring rapid, deterministic control loops for high-speed manufacturing lines. System variables and configuration settings are stored across a balanced memory allocation, featuring 120 KB of dedicated user logic memory alongside an expansive 240 KB register memory space for thorough data logging and parameter buffering.

Large Scale I/O Capacity & Expandable Racks

Engineered for large-scale application deployments, the IC693CPU372 manages up to a maximum capacity of 2,048 local and remote I/O points. This allows the processor to simultaneously interface with a dense combination of discrete switches, digital sensors, analog actuators, and sophisticated field instruments. Furthermore, its expandable architecture supports up to 8 total racks (including the local baseplate and 7 expansion or remote chassis), enabling modular facility scaling without requiring an upgrade to a larger PLC family framework.

Control Sequencing & Internal Software Support

To handle intricate automation scripts, multi-stage machine sequencing, and precision timing loops, the CPU provides built-in internal tracking capacity capable of executing over 2,000 timers and counters simultaneously. This extensive library of software-based control elements allows engineers to configure precise interlocking logic, delay parameters, and cycle counters without risking memory exhaustion or sacrificing scan cycle speeds.

Technical Specifications Table

Installation, Environmental, & Electrical Guidelines

Single-Slot Mounting and Electrical Considerations

The IC693CPU372 features a streamlined modular design that fits into the first slot of a Series 90-30 baseplate. Prior to insertion, verify that the system power supply is turned off to protect the module's sensitive inner microprocessor. Press the module firmly into place until the top and bottom louvers snap securely into the chassis frame. Because this CPU features a prominent internal logic power draw of 1.4 Amps at 5V DC, it is crucial to perform a total system load calculation. Ensure your power supply module has enough remaining headroom to accommodate the 1.4A base load plus the combined draw of all downstream I/O modules.

Thermal Management and Robust Construction

Built with high-grade industrial plastics and heavy-duty internal tracking layers, the module is engineered to operate efficiently under normal manufacturing conditions. To maximize the operational life of the internal AMD SC520 processor, maintain unobstructed airflow through the module's ventilation openings. If installing the PLC inside a sealed, non-ventilated control panel, ensure that heat generated by surrounding components does not cause the ambient air temperature immediately surrounding the CPU to spike beyond standard factory specifications.

Software Environment and Backward Compatibility

This single-slot CPU integrates smoothly into pre-existing GE Fanuc configurations. It is fully backwards compatible with existing Series 90-30 hardware blocks, meaning it can replace legacy embedded CPU baseplates without requiring a rewiring of local I/O terminals. Hardware mapping tables, internal registers, and user program logic can be uploaded and altered using official programming suites, such as Proficy Machine Edition or VersaPro, ensuring seamless diagnostic testing and application development.

Frequently Asked Questions (FAQs)

Q1: What is the main structural advantage of a single-slot CPU like the IC693CPU372?
A1: Unlike older configurations where the CPU was permanently embedded onto the backplane baseplate itself, the single-slot IC693CPU372 can be placed into any standard slot-based baseplate. This allows for simple replacement, faster upgrades, and lets you select whatever slot-density baseplate your physical workspace requires.

Q2: How does the 1.4 Amps power consumption affect my system layout?
A2: The 1.4A current draw is a relatively high base logic consumption compared to lower-end legacy units due to the faster 133 MHz processor. You must ensure that the paired Series 90-30 power supply module has a high enough output rating to handle this baseline plus the continuous current draws of all other installed I/O cards.

Q3: Can the 120 KB user memory and 240 KB register memory be expanded with external RAM modules?
A3: No. The memory allocation on the IC693CPU372 is fixed inside the internal hardware design of the module. However, the 120 KB user logic and 240 KB register spaces are significantly larger than early-generation models, easily supporting over 2,000 timers/counters and complex control routines.