IC693CPU350 GE Fanuc Series 90-30 CPU Module | 25 MHz

Description

Product Introduction

The GE Fanuc IC693CPU350 is a Series 90-30 PLC CPU module used to execute control logic, manage I/O, and handle communications in legacy GE systems. It is a single-slot processor module with a 25 MHz CPU and support for up to 4,096 I/O points across as many as eight racks.

Its value is straightforward: it is the brain of an installed-base 90-30 system. To be honest, that means scan performance, rack count, and memory capacity matter more than marketing language. This CPU was built for real control work, not for fancy protocol checkboxes.

Key Technical Specifications

Application Scenarios & The “Trench” Experience

A CPU failure is never just a CPU failure. It is usually a dead line, a stranded operator, and a maintenance crew trying to prove the rest of the cabinet is still healthy. In the field, the IC693CPU350 is the part that decides whether you spend the night swapping one module or planning a full retrofit.

• Manufacturing – Machine sequence control – Used when a Series 90-30 rack must run discrete logic and coordinated I/O.
• Process plants – Legacy control loops – Required when an existing 90-30 system must keep running without code migration.
• Utilities – Distributed rack control – Needed for multi-rack systems with older GE communications architecture.
• Retrofit support – Like-for-like CPU replacement – Chosen when the plant wants minimum change and fast recovery.

Field case: a customer lost the main controller on an aging line, but the I/O and wiring were still fine. The practical fix was not a new cabinet; it was a verified replacement CPU and a clean memory restore. That kind of swap can save a plant from a week-long modernization plan that nobody budgeted for.

IC693CPU350

IC693CPU350

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, label integrity, and physical damage.
• Live Rig Testing: Install in a known-good Series 90-30 rack and verify startup, LEDs, and logic execution.
• Electrical Parameter Checks: Confirm backplane current draw and stable module power-up behavior.
• Firmware Verification: Log the exact firmware/revision state and memory retention behavior.
• Final QC & Anti-static Packaging: Clean, test, and pack in ESD-safe materials before release.

The Veteran’s Tech Trap Guide

• ⚠️ Suffix matters. IC693CPU350, -BC, and other revisions are not interchangeable without checking the exact system requirements.
• ❗ Memory restoration can bite you. A spare CPU is useless if the program, comms setup, and hardware configuration were never backed up.
• ⚠️ Communication assumptions are dangerous. This CPU has one built-in serial port through the power supply connector, so don’t expect modern comms without the right option modules.
• ❗ Watch rack count. The CPU can support up to eight racks, but the actual installed architecture still has to match the rest of the system.

Frequently Asked Questions (FAQ for Conversion)

Q: Is hot-swappable?
A: No. Pulling a live CPU is a bad idea. Power down and verify the rack before replacement.

Q: What processor does it use?
A: An 80386EX CPU running at 25 MHz.

Q: How much memory does it have?
A: 32 KB of user program memory.

Q: How many I/O points can it handle?
A: Up to 4,096 discrete points, plus analog capacity as listed in the manual.

Q: Does it have a built-in serial port?
A: Yes, one port through the power supply connector.

Q: Can it support a multi-rack system?
A: Yes, up to eight racks total.

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

Q: Is this fake or refurbished?
A: The surplus market is mixed. A good seller should provide photos, test data, and revision details before shipping.