Description
Product Introduction
The GE Fanuc IC693CPU313 is an embedded CPU baseplate unit for GE Series 90-30 PLC installations. Unlike modular processors that plug into separate rack slots, the CPU313 integrates a 12 MHz 80186 processor directly onto the backplane circuit board of a 5-slot chassis, delivering an all-in-one controller footprint for small to medium automation projects.
It offers 12 KB of user logic memory and supports up to 5 option I/O modules (digital, analog, or serial) directly on the local rack. Equipped with a 25-pin D-sub expansion port, the IC693CPU313 can also daisy-chain to downstream local expansion baseplates, allowing your system to scale up without upgrading to a modular CPU architecture.
Key Technical Specifications
| Parameter | Specification |
| Baseplate Architecture | 5-slot baseplate with factory-embedded CPU |
| Processor Speed | 12 MHz (Intel 80186 class processor) |
| User Memory | 12 Kbytes total (logic and register data) |
| Boolean Execution Speed | 0.6 µs per boolean function |
| Option Slots | 5 available slots for I/O and communication modules |
| Discrete I/O Capacity | 512 inputs, 512 outputs max |
| Analog I/O Capacity | Up to 128 analog inputs, 64 analog outputs |
| Expansion Capability | Supports up to 4 local expansion baseplates (40 additional slots max) |
| Power Supply Slot | Dedicated left-hand slot (accepts IC693PWR321, PWR330, PWR322) |
| Dimensions (W x H x D) | 10.4 in x 5.12 in x 5.5 in (264 mm x 130 mm x 140 mm) |
Application Scenarios & The “Trench” Experience
At 3:10 AM, a municipal water district’s remote booster pump house threw a watchdog timeout fault. The embedded processor on an aging IC693CPU313 board froze up from an unsuppressed inductive kickback on a main contactor coil. With head pressure dropping across the hill district and high-level reservoir alarms triggering, the duty technician couldn’t just replace a plug-in CPU card—the processor is physically married to the baseplate. Swapping the complete IC693CPU313 baseplate unit was the only path to restoring water pressure before morning peak demand.
Application Scenarios
- Municipal Pump Stations: Executes localized level control, pump sequencing, and pressure transducer monitoring in compact remote enclosures.
- OEM Packaging Machinery: Controls small cartoners, bottle cappers, and labeling heads where panel enclosure space is limited.
- HVAC Chiller & AHU Skids: Manages multi-stage compressor sequencing, fan VFD speed references, and safety interlocks.
- Material Handling Conveyors: Drives localized package diverters, zero-pressure accumulation zones, and photo-eye tracking logic.
Field Case Study
A commercial bakery in Indiana experienced a complete shutdown on its primary mixing line when a severe voltage dip corrupted the onboard system memory of their IC693CPU313 controller. The line was stalled with 800 pounds of dough slowly spoiling in the hopper, costing over $8,000 per hour in scrap and lost throughput. We pulled a fully bench-tested surplus IC693CPU313 unit from our warehouse and overnighted it via local hot-shot courier. The site technician mounted the chassis, reloaded the ladder program via a serial adapter, transferred the I/O cards, and had the mixer spinning before the morning shift started.
IC693CPU313
IC693CPU313
Transparency SOP: Quality Assurance & Testing
We test every unit on live physical hardware to ensure 100% logic execution and backplane communication before it leaves our facility.
- Inbound Visual Verification: Inspection for cracked plastic frame moldings, bent backplane card-edge pins across all 5 option slots, corroded ground studs, and label authenticity.
- Power-On & Onboard Diagnostic Check: Powered up with a standard IC693PWR330 module to verify proper startup, power-rail voltages, and MODULE OK / RUN LED passes.
- Logic Download & Execution Test: Connected via serial adapter to Proficy Machine Edition; downloaded a full 12 KB stress-test program to verify instruction execution, bit shifting, and register retainage under power cycles.
- I/O & Expansion Bus Sweep: Populated with 5 active digital/analog option cards and connected to a downstream IC693CHS391 expansion baseplate to confirm 100% bus handshake stability.
- ESD Sealing & Heavy-Duty Packaging: Program logic cleared, unit wrapped in heavy-duty anti-static shielding, and packed into custom-molded protective foam boxes.
The Veteran’s Tech Trap Guide
- ⚠️ Do Not Attempt to Install a Modular CPU Card in Slot 1: The already has its CPU processor built directly into the backplane board. Slot 1 is a standard option slot for I/O or option cards (like an ALG223 or BEM331). Trying to force a modular CPU card (such as a CPU364 or CPU374) into Slot 1 will fail and risks damaging the backplane edge connector.
- ❗ Never Connect Expansion Cables Under Power: The Series 90-30 expansion bus is not hot-swappable! Plugging or unplugging the 25-pin expansion cable while the baseplate power supply is turned on will cause a CPU system crash and risks destroying the onboard bus transceiver chips.
- ⚠️ Watch Your Memory Battery Backup: User logic memory retention relies on the 3V lithium battery mounted inside the power supply module (IC693PWR321/PWR330). Before pulling power on an old unit to swap in a replacement, make sure you have a verified backup copy of the PLC program on your laptop—otherwise, memory will wipe to blank upon disconnect!
- ❗ Verify Module Memory Limits: The CPU313 has a strict 12 KB user memory ceiling. If you are replacing an upgraded rack or adding complex function blocks in Proficy Machine Edition, verify your compiled logic size stays within 12 KB, or the CPU will reject the download with an out-of-memory error.
Frequently Asked Questions (FAQ for Conversion)
Q: What is the main difference between the and the IC693CPU311?
A: Both are 5-slot embedded CPU baseplates, but the features a faster 12 MHz processor and 12 KB of user memory, compared to the CPU311’s 10 MHz processor and 6 KB of memory.
Q: Can I replace an IC693CPU311 baseplate with an ?
A: Yes. The shares the exact same physical dimensions, slot layout, and mounting hole pattern as the CPU311, making it a direct upgrade with double the user program memory.
Q: Is the GE Fanuc baseplate unit hot-swappable?
A: No. The Series 90-30 hardware platform does not support hot-swapping. You must disconnect incoming main power to the power supply module before unmounting or replacing the unit.
Q: What software do I need to program the ?
A: You can configure and program the embedded processor using Emerson/GE Proficy Machine Edition, VersaPro, or legacy Logicmaster 90-30 software via an RS-485/RS-232 serial interface connected to the power supply port.
Q: What warranty coverage is included with this surplus unit?
A: Every baseplate unit comes backed by a full 12-month replacement warranty. All units are genuine GE Fanuc hardware, thoroughly inspected, cleaned, and bench-tested on live CPU test rigs prior to shipping.
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