IC693CPU364 GE Fanuc Series 90-30 CPU Module | Ethernet

Description

Product Introduction

The GE Fanuc IC693CPU364 is a Series 90-30 CPU module used to execute logic, manage I/O, and handle communications in legacy GE PLC systems. It is a single-slot processor with a 25 MHz 80386EX core, 240 KB total user memory, and built-in Ethernet, which makes it a better fit than earlier serial-only 90-30 CPUs for systems that still need network access.

Its strength is practical system integration. In our field experience, this is the kind of CPU that keeps an old control line alive without forcing a complete architecture change, especially when you need Ethernet plus classic 90-30 compatibility in the same cabinet.

Key Technical Specifications

Application Scenarios & The “Trench” Experience

A CPU like this usually shows up in plants that already paid for the wiring, the racks, and the software years ago. The hard part is not finding a CPU. The hard part is replacing it without breaking the installed base, the comms path, or the production schedule.

• Manufacturing – Machine sequence control – Used when a Series 90-30 rack needs a CPU with Ethernet and enough memory for larger logic.
• Process control – Legacy plant automation – Required when old GE systems must stay online with minimal code changes.
• Utilities – Networked control cabinets – Needed for Ethernet-connected PLC panels in older infrastructure.
• Retrofit support – Like-for-like CPU replacement – Chosen when the customer wants to preserve the 90-30 architecture.

Field case: a legacy packaging line started dropping comms to the HMI after a controller failure. The system still had good I/O, good wiring, and good drives, but the old CPU could not be trusted anymore. Swapping in a verified IC693CPU364 restored the Ethernet link and the logic run, which is exactly the kind of spare that saves a plant from a long retrofit window.

IC693CPU364

IC693CPU364

Transparency SOP: Quality Assurance & Testing

We don’t just ship boxes; we test them on actual GE racks.

• Inbound Inspection: Check part number, suffix, connector pins, housing condition, and label authenticity.
• Live Rig Testing: Install in a known-good Series 90-30 rack and verify startup, Ethernet link, and logic run.
• Electrical Parameter Checks: Confirm backplane current draw, module stability, and power-up behavior.
• Firmware Verification: Record the exact revision state, Ethernet behavior, and memory retention details.
• Final QC & Anti-static Packaging: Clean, test, and pack in ESD-safe materials before shipment.

The Veteran’s Tech Trap Guide

• ⚠️ Don’t assume it behaves like a CPU350. The CPU364 adds Ethernet and larger memory. That matters when you restore an old project.
• ❗ Backup the original program first. A spare CPU is not a fix if the logic, Ethernet config, and hardware setup were never archived.
• ⚠️ Match the network plan. Built-in Ethernet does not mean every old plant switch and addressing scheme will just work.
• ❗ Watch the suffix and revision. GE 90-30 CPUs often look similar. The wrong suffix can waste a whole shift.

Frequently Asked Questions (FAQ for Conversion)

Q: Is IC693CPU364 hot-swappable?
A: No. Treat it as a powered-down replacement. Pulling a live CPU is asking for a bad day.

Q: Does it have Ethernet built in?
A: Yes. That is one of the main reasons people choose the CPU364 over earlier 90-30 CPUs.

Q: How much memory does it have?
A: 240 KB total user memory.

Q: How many racks can it support?
A: Up to eight racks.

Q: Does it support floating point math?
A: Yes.

Q: Why is it cheaper than OEM direct supply?
A: Because most available stock comes from surplus channels, not active production.

Q: Is it fake or refurbished?
A: The honest answer is that the surplus market is mixed. A good seller should provide test data, revision details, and clear photos before shipping.