The GE Fanuc IC693CHS398 is a 5-slot expansion baseplate for Series 90-30 PLC systems. It enables seamless I/O expansion up to 50 feet from the CPU, featuring a dedicated power supply slot and a 25-pin D-type connector for high-speed data transmission.
The IC693CHS398 acts as a critical hardware expansion component for the GE Fanuc (now Emerson) Series 90-30 PLC platform. Engineers utilize this expansion baseplate to increase the local I/O capacity beyond the constraints of the primary CPU rack. By facilitating a direct link to the central processor, the module ensures that the control system can manage a higher volume of field sensors and actuators without requiring a complete system overhaul. The scalability of the network depends on the specific CPU in use; while entry-level processors like the CPU 331 support up to four expansion units, high-tier models such as the CPU 350 and above manage up to seven interconnected baseplates.
This unit features five dedicated I/O slots specifically engineered to house various discrete and analog option modules. To maintain system integrity and prevent hardware damage, the physical slot dimensions only accept compatible Series 90-30 modules. Connectivity occurs through a 25-pin D-type female expansion port located on the right side of the chassis. Furthermore, the architecture supports total cable runs of up to 50 feet (15 meters), allowing for flexible rack positioning within a control cabinet. To ensure signal stability and prevent electrical noise interference, the installation requires all interconnected baseplates to share a unified common ground.
The IC693CHS398 requires its own independent power supply module, which operators must install in the leftmost dedicated power slot. Internal logic circuitry draws a nominal current of 170 mA from the 5VDC bus provided by the local power supply. While the baseplate supports a wide array of I/O modules, certain hardware limitations apply to maintain bus speed and timing. Specifically, this expansion baseplate does not support PCM, ADC, Bus Expansion Modules (BEM), or CMM311 communication modules. Consequently, designers should verify module compatibility before finalizing the control architecture.
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