Description
Product Introduction
The GE Fanuc IC693CPU351 is a single-slot modular CPU module engineered for mid-tier Series 90-30 PLC installations. It mounts directly into Slot 1 of a modular CPU baseplate (such as the 10-slot IC693CHS392 or 5-slot IC693CHS393), giving process control engineers a responsive, reliable processing core for critical plant machinery.
Driven by a 32 MHz Intel 80386EX processor, the IC693CPU351 provides 32 Kbytes of user-configurable memory for ladder logic, register data, and hardware configuration tables. Building on the foundation of earlier 350-series processors, it delivers refined execution speeds and robust backplane handling across up to 2,048 discrete I/O points and 7 expansion baseplates.
Key Technical Specifications
| Parameter | Specification |
| Module Type | Modular CPU (Plugs into Slot 1 of Modular Baseplate) |
| Processor Type | 32 MHz Intel 80386EX |
| User Memory | 32 Kbytes (Configurable for logic registers and program storage) |
| Boolean Execution Speed | 0.22 µs per boolean instruction |
| Discrete I/O Capacity | 2,048 Inputs, 2,048 Outputs |
| Analog I/O Capacity | 2,048 Words Input, 512 Words Output |
| Baseplate Compatibility | Fits modular baseplates (IC693CHS392, CHS393, CHS382, CHS383) |
| Expansion Capacity | Supports up to 7 expansion/remote baseplates (local or remote) |
| Serial Communications | SNP, SNP-X, Slave CCM, and RTU Read Protocols via Power Supply Port |
| Real-Time Clock | Integrated (Accuracy ±2 seconds per day at 25°C) |
Application Scenarios & The “Trench” Experience
At 1:45 AM during a high-speed production run, a main packaging conveyor line went completely dead. The “OK” LED on the installed IC693CPU351 module went dark after an unsuppressed inductive kickback from a failing line contactor spiked the CPU backplane bus. With dozens of pallets backing up in the staging area and freight trucks waiting on the loading dock, the maintenance team needed a quick CPU swap to restore system handshakes without re-engineering the cabinet.
Application Scenarios
- High-Speed Packaging Lines: Manages bottle indexing, carton flap gluing, case packing, and high-speed rejection gates.
- Continuous Chemical Batching: Controls multi-stage ingredient dosing, agitator speeds, and temperature loops across process tanks.
- Automotive Stamping Cells: Coordinates safety gate interlocks, sheet feeders, and hydraulic press stroke validation.
- Municipal Pump Stations: Executes multi-pump lead/lag sequencing, wet-well level tracking, and telemetry alarms.
Field Case Study
A corrugated box plant in Indiana suffered a sudden CPU crash on their primary corrugator stacker. The legacy IC693CPU351 card experienced an internal memory management chip failure, halting the stacker and racking up downtime costs of $10,500 an hour. We pulled a bench-tested, pre-cleared surplus IC693CPU351 from stock and dispatched it via overnight air courier. The site technician powered down the rack, swapped the card in Slot 1, uploaded the stored project via Proficy Machine Edition, and had the line running at full speed before the morning shift change.
IC693CPU351
IC693CPU351
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; we test every IC693CPU351 module on active GE Series 90-30 hardware before it leaves our facility.
- Inbound Visual Verification: Thorough check for housing fractures, bent backplane connector pins, intact latching tabs, and OEM revision label verification.
- Modular Rack Power-On Test: Slotted into Slot 1 of an active GE IC693CHS392 modular baseplate powered by an IC693PWR330 supply to confirm power-up self-test, OK, RUN, and SNP LED cycles.
- Logic Download & Thermal Soak: Connected via RS-485 to Proficy Machine Edition; downloaded a full 32 KB stress-test program to verify logic execution, register clearing, and continuous loop scanning for 4 hours inside a thermal chamber.
- Multi-Rack Expansion Sweep: Tested with attached local expansion baseplates (IC693CHS391) populated with digital and analog I/O modules to confirm 100% backplane data transfer stability.
- ESD Packaging & Final QC: System diagnostic buffers cleared, real-time clock reset, and the module sealed in heavy-duty ESD shielding with custom impact-absorbing foam packaging.
The Veteran’s Tech Trap Guide
- ⚠️ Slot 1 Installation Only: The must be installed in Slot 1 of a modular CPU baseplate (IC693CHS392 or CHS393). It will not operate in an option slot, nor can it be used on embedded baseplates (like the IC693CHS397). Forcing it into an incompatible slot will prevent system boot.
- ❗ Never Hot-Swap the CPU Card: The Series 90-30 backplane does not support hot-swapping! Pulling or inserting the while the rack power supply is energized can arc the card-edge connector pins, corrupt RAM, or destroy the CPU’s internal 3.3V/5V logic buffers. Always shut down power first.
- ⚠️ Back Up Your Logic Program First: User memory retention on this card relies on the lithium battery connected to the power supply module (IC693PWR321/PWR330). If you extract a dead or failing CPU card without having a verified backup copy of the ladder logic on your PC, the program will wipe once disconnected from battery power!
- ❗ Verify Software Firmware Targets: When replacing a failed module, double-check that your project settings in Proficy Machine Edition, VersaPro, or Logicmaster 90 target the matching CPU model and firmware baseline. A configuration mismatch can throw hardware error flags during download.
Frequently Asked Questions (FAQ for Conversion)
Q: Is the GE Fanuc hot-swappable?
A: No. You must shut down main incoming power to the Series 90-30 baseplate before removing or installing the module. Attempting to swap it live will damage the module and backplane board.
Q: What is the main difference between the IC693CPU350 and the ?
A: The is an updated revision in the 350-series CPU family. It shares the same 32 MHz processor and 32 KB memory footprint, but features updated internal hardware components and refined firmware performance over the older CPU350.
Q: Can I plug the into an IC693CHS397 embedded baseplate?
A: No. The IC693CHS397 baseplate has an embedded CPU311 built directly onto its backplane board. The requires a modular CPU baseplate, such as the 10-slot IC693CHS392 or 5-slot IC693CHS393.
Q: How do I communicate with and program the ?
A: Programming and hardware configuration are handled through Emerson/GE Proficy Machine Edition, VersaPro, or legacy Logicmaster 90-30 software using an RS-485/RS-232 converter connected to the 15-pin D-sub port on the Series 90-30 power supply module.
Q: What warranty coverage comes with this surplus CPU module?
A: Every module comes backed by a full 12-month replacement warranty. All units are authentic GE Fanuc surplus equipment, thoroughly inspected, cleaned, and bench-tested under active CPU load before delivery.
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