Product Core Brief

• Model:
• Brand: GE Fanuc / GE
• Series: Series 90-30 PLC
• Core Function: 5-slot integrated baseplate with permanently soldered embedded Turbo CPU, executing logic and supporting local I/O modules for small standalone machine control.
• Product Type: Embedded CPU Baseplate (Integrated Backplane + CPU)
• Key Specs: 10MHz 80188 Turbo CPU | 12KB user program memory | No expansion rack capability Note: Discontinued legacy hardware; factory new stock exhausted, surplus and refurbished units widely traded. This is an embedded baseplate, not a plug-in single-slot CPU module. Hot swapping is not supported. Cannot connect remote/expansion racks.

Key Technical Specifications

• Processor: 10 MHz Intel 80188 Turbo embedded CPU
• Boolean Scan Speed: 0.6 ms per 1K boolean contact logic
• User Program Memory: Max 12 KB (older firmware limited to 6KB)
• System I/O Limits: Combined discrete %I + %Q: Maximum 320 points Analog Inputs (%AI): 64 words Analog Outputs (%AQ): 32 words
• Physical Slots: 5 slots total (Slot 0 dedicated power supply; Slots 1–4 for I/O / communication modules)
• Expansion Capability: No expansion bus connector; remote/serial expansion racks are not supported
• Communications: 1 serial port routed via power supply terminal; supports SNP/SNPX Slave only
• Backplane Power Draw: 410 mA @5 VDC
• Memory Backup: Battery-backed RAM; limited data retention during power loss
• Operating Temperature: 0°C to 60°C horizontal cabinet mounting
• Storage Temperature: -40°C to 85°C
• Form Factor: Integrated 5-slot baseplate assembly (CPU cannot be removed or replaced separately)
• Compatible Power Supplies: IC693PWR321, IC693PWR322, IC693PWR324, IC693PWR330, IC693PWR331
• Supported Software: Logicmaster 90, Proficy Machine Edition

Product Introduction

This unit is an entry-level embedded controller for Series 90-30. Unlike modular plug-in CPUs such as IC693CPU351, the CPU circuitry is permanently mounted onto the baseplate PCB and cannot be swapped individually. All five slots are available for power supply and I/O modules for compact standalone machine applications.

It is designed for small-scale control systems that do not require distributed remote I/O racks. Communication options can be extended by installing optional serial or Genius bus modules into available slots; there is no native onboard Ethernet interface.

QA & Testing SOP (Transparency Building)

1. Incoming Inspection: Verify part marking. Inspect backplane edge connectors for bent pins or corrosion; examine PCB for cracks, burnt traces or battery leakage.
2. Live Testing: Install matching power supply and test I/O modules. Apply nominal rack power, download test logic program, run continuous 24-hour cyclic execution and validate serial SNP communication.
3. Electrical Testing: Use Fluke 115 to monitor backplane 5VDC rail stability. Insulation resistance testing must exceed 10MΩ between bus traces and chassis protective ground.
4. Documentation Check: Record hardware revision. Photograph baseplate slot labeling and battery location before disassembly.
5. Final QC & Packaging: Place unit inside anti-static shielding. Attach dated QC test tag confirming CPU program execution and backplane communication validation prior to shipment.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ Embedded Hardware Limitation: The CPU is soldered to the baseplate. If the embedded CPU fails, the entire baseplate must be replaced; you cannot swap only a CPU card. ❗ No Expansion Racks: This baseplate has no expansion bus port. Remote serial expansion racks (IC694CHS392) cannot be connected to this controller. ❗ Not Interchangeable with Modular CPU Systems: Cannot directly replace setups using IC693CHSxxx baseplates + plug-in CPU351/364. System architecture and maximum I/O capacity differ significantly. ❗ No Hot Swap Support: Series 90-30 backplanes lack hot-swap logic. Any module insertion or removal requires full rack power shutdown. ❗ ESD Dangers: Exposed backplane traces and embedded CPU circuits are static-sensitive. Un-grounded handling causes intermittent logic faults or memory corruption. ❗ Power Budget Miscalculation: Sum total current draw of all installed I/O modules plus the baseplate’s 410mA load to avoid power supply voltage sag.

Replacement Guide:

1. Pre-install: Activate lockout-tagout on rack power; back up the complete user program and hardware configuration. Record slot assignments of all modules.
2. Removal: Remove all I/O modules and power supply; unbolt baseplate from subpanel and disconnect all wiring.
3. Install: Secure new baseplate horizontally, install power supply into Slot 0, reinstall I/O modules into matching slot positions.
4. Power-on Test: Restore rack power, confirm CPU RUN LED operates normally, download saved program and verify all local I/O channels function without faults.

FAQ (Frequently Asked Questions)

Q: Does this baseplate support hot swapping of I/O modules? A: No. Series 90-30 architecture does not support hot insertion/removal. Complete rack power shutdown is mandatory.

Q: Can connect remote expansion I/O racks? A: No. There is no expansion bus connector on the baseplate. All I/O must be installed locally within the 5 slots.

Q: What is the core difference between and IC693CPU351? A: = integrated 5-slot embedded baseplate with soldered low-speed CPU, limited memory, no expansion capability. IC693CPU351 = single-slot plug-in modular CPU for separate IC693CHS baseplates, larger memory, faster scan speed and support for up to seven remote expansion racks. They are not drop-in interchangeable.

Q: Can I install this baseplate inside PACSystem RX3i systems? A: No. Hardware form factor, backplane signaling and firmware are exclusive to Series 90-30. It cannot operate within RX3i racks.

Q: Does this controller have built-in Ethernet? A: No. Ethernet connectivity requires adding separate communication modules into available slots.

Q: Can the embedded CPU be repaired or replaced separately? A: No. The CPU is permanently soldered to the baseplate PCB. CPU faults require full baseplate replacement.

Q: Will saved program files load directly onto a replacement baseplate? A: Program logic imports without modification. After replacement, verify memory size compatibility and execute a full local I/O validation test.