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In many real control systems, the GE IC693CSE340 appears wherever a Series 90‑30 PLC needs a compact CPU in a single slot while leaving the rest of the rack available for dense I/O and communication modules. It is used in industrial automation projects such as small process skids, packaged OEM machines, pump stations, and local control panels where cabinet space is tight but reliable, deterministic control is still required. Engineers select this model when they want a self-contained controller that plugs directly into a standard 90‑30 baseplate, provides the core processing capability, and integrates cleanly with existing 90‑30 power supplies, racks, and option modules.
In water and wastewater, the GE IC693CSE340 is well suited for remote lift stations and chemical dosing skids where local logic, basic alarming, and simple communications are enough to handle the application without a large central PLC. In discrete manufacturing and material handling, it is commonly deployed in stand-alone cells—such as indexing conveyors, packaging modules, or assembly fixtures—that must run autonomously but still exchange key data with higher-level systems through standard communication options. Because it is applicable in control systems that favor modularity, the GE IC693CSE340 is often paired with expansion baseplates, remote I/O, and serial or Ethernet links to HMIs and SCADA.
The model also fits brownfield modernization scenarios. When upgrading relay logic or small legacy controllers, integrators can drop a GE IC693CSE340 into a Series 90‑30 rack, reuse much of the existing cabinet infrastructure, and gradually expand capabilities with additional I/O or communication modules. This use-first approach—starting with the control task and panel constraints—explains why the module remains attractive in long-lived plants, utilities, and OEM fleets where standardization and long-term serviceability matter as much as raw CPU performance.
Product introduction and positioning
The GE IC693CSE340 is a single-slot CPU module in the GE Fanuc Series 90‑30 family, designed to provide core PLC processing capability without requiring a separate, multi-slot CPU assembly. It combines the central processing unit, memory, and local programming port into a compact card that plugs into a standard 90‑30 baseplate, leaving remaining slots for power supplies, I/O, and communication options. Within the Series 90‑30 architecture, it functions as the main controller, executing ladder logic, handling discrete and analog I/O updates, and coordinating communications with peer devices and supervisory systems.
System-wise, the GE IC693CSE340 fits into 90‑30 racks alongside digital I/O, analog I/O, specialty and network modules, leveraging the shared backplane bus for data exchange and power. The CPU’s onboard memory and processing resources are sized for small to mid-range applications, which makes it ideal for targeted machine or skid-level controllers rather than massive plant-wide DCS replacements. It is typically configured using GE programming tools from the 90‑30 ecosystem, allowing existing engineering teams to manage it with familiar workflows and standards.
Positioned as a flexible, space-efficient controller, the GE IC693CSE340 serves engineers and integrators who want to keep their hardware footprint small while staying within the proven Series 90‑30 platform. It is valuable where panel real estate is limited, where a single standardized CPU type should cover many similar machines, and where long-term availability of spares and documentation is more important than cutting-edge CPU speed. This combination makes it a practical choice for OEMs and end users who prize stability, global support, and predictable lifecycle behavior
- IC693CSE340
- IC693CSE340
Key technical features and functional benefits
One of the chief strengths of the GE IC693CSE340 is its single-slot design, which maximizes usable rack space for I/O and communications while still delivering full PLC functionality. For designers working in compact cabinets, this allows more channels of field I/O or additional option modules without increasing panel size or adding extra racks. Functionally, the CPU provides deterministic scan-based execution suited to classic ladder logic and sequence control, giving predictable response times needed for interlocking, machine safety functions (when used with appropriate external safety devices), and coordination of drives and actuators
The module typically supports a serial programming/communications interface compatible with Series 90‑30 tools and SNP or related protocols, enabling connection to programming laptops, HMIs, or intermediary gateways. This allows the GE IC693CSE340 to participate in broader automation architectures where data must move from the local controller to SCADA systems, data historians, or remote service tools. When paired with 90‑30 communications modules in the same rack, the CPU can access Ethernet, serial networks, or fieldbus links without changing the controller platform.
From a hardware and reliability standpoint, the GE IC693CSE340 leverages the ruggedized Series 90‑30 form factor and is intended for mounting in industrial control panels exposed to electrical noise, vibration, and temperature variations within published ratings. Non-volatile memory options and battery-backed features (when so equipped within the 90‑30 family) help retain application programs and critical data through power interruptions, improving resilience in less stable power environments. Over time, this translates into fewer unexpected program losses and less site time for reloading applications.
Compatibility is another practical advantage. The GE IC693CSE340 works with standard Series 90‑30 baseplates, power supplies, and a broad range of GE I/O modules, which lets users standardize on a single hardware ecosystem for many different projects. As plants evolve, the same CPU model can appear in multiple panels, simplifying stocking of spares, engineer training, and documentation practices. Combined with GE/Emerson’s extensive manuals and legacy support network, this makes the GE IC693CSE340 a dependable building block for long-lived industrial control systems.
Detailed technical specifications
| Parameter | Value |
|---|---|
| Model | GE IC693CSE340 |
| Brand | GE Fanuc / Emerson |
| Product type | Single-slot CPU module for Series 90‑30 PLC |
| Platform compatibility | Series 90‑30 baseplates, power supplies, and I/O modules |
| Slot requirement | Occupies one slot in a 90‑30 rack |
| Primary function | Executes user logic, manages I/O updates, and coordinates communications |
| Programming interface | Serial programming/communications port compatible with 90‑30 tools |
| Typical application size | Small to mid-range machine, skid, or process-area control |
| Mounting | Installed in panel-mounted Series 90‑30 baseplate |
| Backplane connection | Standard Series 90‑30 backplane bus |
| Cooling | Natural convection within a properly ventilated enclosure |
| Operating environment | Industrial control cabinets within Series 90‑30 temperature and humidity limits |
Related modules and compatible units
GE IC693CHS391 – 10‑slot expansion baseplate that houses the GE IC693CSE340 and additional I/O and communication modules in compact systems.
GE IC693PWR330 – Power supply module providing the backplane power required by the GE IC693CSE340 and associated modules.
GE IC693CMM321 – Ethernet communications module often paired with the GE IC693CSE340 for plant network and SCADA connectivity.
GE IC693BEM331 – Genius Bus Controller module used with the GE IC693CSE340 when the controller must manage distributed I/O over a Genius bus.
GE IC693ALG221 – Analog input module that can be controlled by the GE IC693CSE340 for process measurement tasks
GE IC693MDL740 – Discrete output module used with the GE IC693CSE340 to drive solenoids, contactors, and signal lamps in machine and process control.
GE IC693CPU323 – Another CPU in the same Series 90‑30 family; often appears alongside systems using the GE IC693CSE340 where different performance or slot usage profiles are needed.
Installation notes and maintenance best practices
When planning installation of the GE IC693CSE340, engineers should begin with rack and power sizing, confirming that the chosen 90‑30 baseplate and power supply can support the CPU and all present and future modules. The CPU should be placed in a slot that aligns with recommended hardware configuration practices so that addressing in the engineering software matches the physical layout. Good cabinet design includes adequate clearance for airflow, separation between low-voltage control wiring and high-voltage power cables, and sufficient front access for connecting programming cables and viewing status indicators.
Maintenance of systems using the GE IC693CSE340 focuses on both the module and its environment. Periodic inspections should verify that the CPU is firmly seated, that there are no signs of corrosion or contamination on the backplane, and that ambient temperatures remain within specification. Where battery-backed features are used in the wider 90‑30 system, battery condition and replacement intervals must be managed to avoid losing program or data retention. Regular backups of the application program and configuration, stored securely outside the PLC, are essential so that the GE IC693CSE340 can be quickly replaced and restored if a failure occurs.
