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The GE IC693CPU374-GU is a high-performance single-slot CPU module from the GE Fanuc (now Emerson Automation) Series 90-30 PLC family. Featuring a 133 MHz AMD SC520 (embedded 586) processor and 240 KB of configurable user memory, the GE IC693CPU374-GU delivers fast scan times and robust processing power for medium-to-large automation applications. It includes an embedded 10/100 Mbps Ethernet interface with a built-in switch, enabling direct high-speed networking without additional modules. The GE IC693CPU374-GU supports up to 2048 I/O points and is ideal for complex logic, data-intensive tasks, and integration with HMIs, SCADA, or peer PLCs. It occupies only one slot in the Series 90-30 rack, freeing space for I/O modules, and offers reliable operation in industrial environments. Although a legacy CPU, the GE IC693CPU374-GU remains popular for sustaining or upgrading existing Series 90-30 systems due to its embedded Ethernet, high memory capacity, and proven performance.

Model,GE IC693CPU374-GU

Manufacturer,GE Fanuc Automation (Emerson Automation)

Series,Series 90-30 PLC

Product Type,High-Performance CPU Module with Embedded Ethernet

Processor,"AMD SC520 (embedded 586), 133 MHz"

User Memory,240 KB configurable

Ethernet Interface,Embedded 10/100 Mbps with built-in switch

I/O Capacity,Up to 2048 points (discrete + analog)

Register Memory,"Configurable %R, %AI, %AQ"

Serial Ports,None on CPU (RS-485 supported via power supply)

Power Requirements,7.4 Watts at 5 VDC

Mounting,Single slot in Series 90-30 rack

Operating Temperature,0°C to 60°C (some variants support -40°C to 60°C)

Additional Features,"No battery required for memory in some configurations, password security, high-speed Ethernet"

Install the GE IC693CPU374-GU into an available single slot in the Series 90-30 PLC rack, ensuring proper alignment with the backplane.

Connect Ethernet cables to the front-panel RJ45 ports for programming, HMI, or network communication.

Apply power to the rack and verify the CPU status LEDs indicate normal operation (RUN, OK, etc.).

Connect a programming computer running Proficy Machine Edition (or Logicmaster 90) via Ethernet.

Configure hardware settings, assign I/O points, and download the application program (ladder logic or other supported languages).

Set the CPU to RUN mode and monitor real-time variables, scan times, and diagnostics through the programming software or HMI.

Perform system tests to confirm logic execution, Ethernet communication, and process control performance.

Power down the entire Series 90-30 rack before inserting or removing the GE IC693CPU374-GU to avoid backplane damage or electrical hazards.

Use proper ESD protection (wrist strap and grounded mat) when handling the module to protect the processor and memory components.

Confirm the rack power supply can deliver the required 7.4 W at 5 VDC along with other modules in the rack.

Route Ethernet cables away from high-voltage or noisy lines; use shielded Cat5e or better cable for reliable 10/100 Mbps performance.

Verify firmware compatibility with your programming software before downloading applications.

Ensure adequate airflow around the CPU for proper cooling.

After installation, run initial self-diagnostics, check Ethernet link status, and clear any fault tables before placing the system online.

Daily Maintenance Content Details

Monitor the front-panel LEDs on the GE IC693CPU374-GU daily for RUN, OK, FAULT, and Ethernet link/activity status.

Check system diagnostics in Proficy Machine Edition or the HMI for scan time anomalies, memory usage, or communication errors.

Review event logs and fault tables for early detection of I/O issues or network problems.

Inspect rack temperature and ventilation to maintain 0–60°C ambient conditions.

Clean dust from the module vents and backplane (power off) using low-pressure compressed air every 1–3 months depending on environment.

Periodically verify Ethernet connection health and packet statistics.

During scheduled outages, backup the program and configuration, test memory integrity, and confirm Ethernet performance.

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Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

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We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.