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Phone: +86 16626708626Description
2. Product Core Brief
- Model: IC693CPU352-DG
- Brand: GE Fanuc (Emerson)
- Series: Series 90-30
- Core Function: Executes user logic, scans I/O, and handles communications
- Product Type: CPU Module
- Key Specs: 25 MHz 80386EX processor, 240K bytes configurable user memory, supports floating point math, up to 2048 discrete I/O points
- Condition: New Surplus / New Original (obsolete part, limited spares available)
3. Key Technical Specifications
- Processor Speed: 25 MHz (80386EX)
- User Logic Memory: 240K bytes total (configurable across %R, %AI, %AQ)
- Discrete I/O Capacity: Up to 2048 points (with expansion racks)
- Analog I/O Capacity: Up to 128 In / 64 Out
- Boolean Execution Speed: 0.22 ms per 1K of logic (typical)
- Floating Point Math: Yes (hardware support)
- Built-in Ports: Three serial ports (two RS-232/RS-485 configurable for SNP/SNP-X, Modbus RTU slave/master)
- Battery-Backed Clock: Yes
- Registers: Up to 32,640 words (%R)
- Programming Languages: Ladder Logic, SFC
- Operating Temperature: 0 to 60 °C
- Power Requirements: 910 mA max from +5 V backplane
- Status: Obsolete by manufacturer – spares only
4. Product Introduction
The GE Fanuc IC693CPU352-DG is a single-slot central processing unit for the Series 90-30 programmable logic controller system. It installs in the CPU slot of a baseplate and processes ladder logic, updates I/O, and manages serial communications in mid-range applications such as packaging machines, assembly lines, or utility controls.
This CPU stands out with its 25 MHz speed, 240K bytes of configurable memory, and built-in floating point for handling real numbers in calculations like PID loops or scaling. Maintenance teams favor it for legacy 90-30 installations because it preserves existing programs, I/O addressing, and rack layouts during direct replacements—delaying migration to newer RX3i systems.
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No LEDs on power-up (RUN/OK off) | No backplane power or loose fit | ✅ High | Measure +5 V at baseplate pins | Confirm PSU; reseat CPU |
| CPU OK LED flashing/off | Fatal error or no program loaded | ✅ High | Connect Proficy ME; read fault table | Clear faults; reload config/program |
| RUN LED off after cycle | Invalid program or dead battery | ✅ High | Check battery voltage (>3 V); verify checksum | Replace battery; re-download program |
| Slow scan or watchdog timeout | Overloaded logic or full memory | ✅ Medium | View sweep time in diagnostics | Optimize ladder; monitor %R usage |
| Serial comms fail (no SNP) | Cable fault, baud mismatch | ✅ Medium | Test with known good cable; check port config | Match baud/parity; test ports |
| Floating point faults in logic | Operand mismatch or overflow | ✅ High | Inspect math blocks; force test values | Debug data types; handle edge cases |
| Intermittent boot faults | Low battery or aging hardware | ✅ Medium | Replace battery; monitor over cycles | Battery often fails in stored units |
Most IC693CPU352 problems come from power, battery (critical after long storage), or config/program issues rather than the CPU board failing. CPUs rarely die outright. Pull fault tables, LED photos, and battery voltage—send them if it’s stubborn; we can narrow it down quick.
- IC693CPU352-DG
6. Frequently Asked Questions (FAQ)
What does the -DG suffix mean on IC693CPU352-DG? It’s a specific hardware/firmware revision (valid alongside -CE, -DE, -DF, -DH, etc.). No changes to processor speed, memory, ports, or I/O support from base IC693CPU352. We’ve swapped DG revisions into operational 90-30 racks without program or config adjustments.
Is this CPU still manufactured new? No, Series 90-30 CPUs are obsolete. We source new surplus—unused units from factory overstock or decommissioned spares. They perform to original specs but lack Emerson active support.
How many serial ports are built-in? Three total: two configurable RS-232/RS-485 for SNP/SNP-X or Modbus RTU, plus one additional. Ideal for separate programming, HMI, or device links.
Can I swap this CPU without losing the program? Yes—logic and config reside in flash/EEPROM with battery backup for RAM during power loss. Power down, swap, power up; reload config if battery was dead. Test battery voltage before install.
Does it have native Ethernet? No onboard Ethernet. Add an Ethernet module (e.g., IC693CMM321) or use a gateway for TCP/IP. Relies on serial protocols natively.
Why surplus over refurbished? Surplus units have zero field hours—no thermal wear, no battery drain cycles. Refurbs frequently come from failed racks and get partial repairs. We test every IC693CPU352-DG: rack boot, program load, I/O force, serial ping, and 24-hour stability run.
What warranty do you provide? 1-year functional coverage when installed correctly. Covers defects, not ESD, surges, or misconfiguration. Test reports with boot photos, fault clears, and diagnostics available.
