IC693CPU311Z GE Series 90-30 CPU | 10 MHz, 160 I/O

IC693CPU311Z: Embedded Control for Series 90-30 Systems

When a Series 90-30 rack loses its CPU, the entire line stops. The IC693CPU311Z solves that problem as the entry-level embedded controller for the platform. It combines an Intel 80188 processor running at 10 MHz with 1 KB of register memory. Consequently, it handles 160 discrete I/O points plus 64 analog inputs and 32 analog outputs. Because it draws 410 mA from the backplane, it suits compact control enclosures where power budget matters. This module carries the GE Fanuc heritage, and Emerson now owns the line.

Key Features and Verified Specifications

• Processor: Intel 80188 running at 10 MHz for deterministic scan cycles.
• Register memory: 1 KB for internal data storage and logic execution.
• Discrete I/O: 160 points for switches, relays, and pilot devices.
• Analog I/O: 64 inputs and 32 outputs for process signals.
• Serial ports: 1 port for programming and serial communication.
• Backplane current: 410 mA draw from the Series 90-30 backplane.
• Mounting: Embedded directly on the baseplate.

Among these, the 10 MHz clock speed is the defining constraint. It sets the scan time for logic execution, so high-speed interlocks may need a faster CPU. For many discrete manufacturing cells, however, the IC693CPU311Z provides sufficient throughput.

Installation and Integration Notes

Because the IC693CPU311Z mounts embedded on the baseplate, it occupies a dedicated CPU slot in the Series 90-30 rack. First, verify that the backplane can supply 410 mA to the CPU slot. Second, confirm that the rack configuration matches the I/O capacity. The single serial port handles programming and serial communication. If the application requires a fieldbus network, note that wiring into such networks may require an external gateway or connection module. Confirm cables and gateways with the supplier before commissioning.

Maintenance and Lifecycle Reality

The IC693CPU311Z is discontinued (End of Sale), last verified 2026-09. Therefore, spare units come from remaining stock or the secondary market. For existing installations, inspect the CPU periodically for overheating and secure seating. Because the module has no moving parts, wear is minimal. However, the discontinued status means replacement planning is essential. This part has been discontinued by the manufacturer. Migrate to PACSystems RX3i (IC695 series); we stock remaining new and refurbished units.