Description
1. Product Overview
Part Number: IC693CPU364-EK
Manufacturer: GE FanucCompatible System: Designed exclusively for the GE Series 90-30 PLC backplane baseplate, occupying a single rack slot as the core master controller of the entire PLC system. It executes logic operation, I/O scheduling, network communication, program storage and equipment interlock management, fully compatible with local racks, expansion racks and remote I/O substation hardware architecture for in-situ replacement and upgrade of legacy automation control systems.
2. Hardware Structure & Six Functional Units
2.1 Main Processor & High-Speed Logic Calculation Unit
Equipped with a 25MHz 32-bit 80386EX industrial processor; typical Boolean logic scan speed reaches 0.22ms per 1000 contacts to meet real-time requirements of equipment interlock, closed-loop regulation and sequence control. An onboard hardware watchdog timer automatically triggers CPU reset upon program crash or infinite loop to prevent system runaway. It supports over 2000 timers and counters for complex multi-process logic development, with independent task scheduling without auxiliary external modules.
2.2 Hierarchical Large-Capacity Configurable Memory Unit
Total user memory is 240KB with flexible allocation for programs and data:
- Discrete I/O: Max 2048 %I inputs and 2048 %Q outputs;
- Registers %R, analog %AI/%AQ expand in 128-word increments up to 32640 words with updated programming software;
- Non-volatile storage retains key recipe parameters and power-fail hold register data after power loss, with core project programs permanently saved without backup battery support.
2.3 Dual-Link Native Communication Unit
- Onboard 10BASE-T Ethernet Port: Enables programming, multi-CPU networking and SCADA data interaction. The port is protected by a replaceable slow-blow fuse (125V 1A); only the fuse blows in case of short circuit without damaging the main chip.
- Onboard RS485 Serial Port: Led out via the power supply module, supporting SNP/SNPX slave protocol. CMM/PCM co-processor modules are required to implement master station and Modbus RTU functions.
2.4 Backplane Bus & I/O Scheduling Unit
The rear gold-finger connector interfaces with the Series 90-30 standard rack bus to poll all I/O, motion and communication modules on the rack, collect DI/AI signals and issue DO/AO commands uniformly. Up to 7 expansion and remote baseplates can be cascaded; the local rack maintains core interlock logic independently if remote substation communication is lost for hierarchical fault tolerance.
2.5 Front-Panel Indication & Power-On Self-Test Unit
Multiple front-panel LEDs indicate power status, CPU run mode, program error, network link and system fault. A comprehensive power-on self-test verifies memory integrity, bus scanning, firmware validation and I/O bus diagnostics. The CPU locks into halt mode with fault LED illumination upon abnormal self-test results for easy on-site troubleshooting without upper software.
2.6 Industrial Reinforced PCB & Multi-Stage Power Protection Unit
Powered by rack backplane 5VDC with rated operating current 1.51A. The power input integrates EMI filtering, reverse polarity protection, overcurrent limiting and TVS surge clamping to suppress voltage fluctuation and plug-in transient spikes. The full gold-plated FR-4 PCB is coated with conformal coating for moisture, corrosion and salt spray resistance. Fanless passive cooling ensures stable 24/7 continuous operation under high cabinet temperature and mechanical vibration.
3. Detailed Technical Specifications
(1) Core Control & Memory Configuration Parameters
| Item | Specification |
|---|---|
| Model | IC693CPU364-EK Main CPU Module for Series 90-30 |
| Main Processor | 80386EX @ 25MHz |
| Logic Scan Speed | 0.22ms per 1000 Boolean logic contacts |
| Total User Memory | 240KB customizable program & data partition |
| Max Baseplate Quantity | 8 (1 local main rack + 7 expansion/remote racks) |
| Discrete I/O Limit | 2048 %I Inputs, 2048 %Q Outputs |
| Internal Resources | 4096 internal coils, 256 temporary coils, 128 system status bits, 2000+ timers & counters |
| Analog Scaling | %AI, %AQ, %R registers expandable from 128 words to max 32640 words |
| Firmware Revision | Factory stabilized industrial firmware batch EK |
(2) Electrical Power & Communication Parameters
- Power Source: 5VDC backplane bus of Series 90-30 rack
- Rated Load Current: 1.51A @ 5VDC
- Ethernet: 10BASE-T with replaceable 1A slow-blow fuse
- Serial Interface: Onboard RS485 supporting SNP/SNPX slave mode
- Programming Software Compatibility: VersaPro, Logicmaster 90 series configuration tools
- Hot Swap Restriction: Hot plugging while the rack is energized is strictly prohibited to avoid permanent damage to backplane bus and core processor chip.
(3) Environmental Operating Parameters
- Operating Temperature: 0℃ ~ +60℃
- Storage & Transport Temperature: -40℃ ~ +85℃
- Humidity: 5%~95%RH non-condensing, no corrosive gas or salt fog deposition
- Ingress Rating: IP20 for installation inside sealed industrial cabinets only
(4) Mechanical Mounting Dimensions
- Mounting: Horizontal plug-in installation into single slot of standard 90-30 PLC rack
- Overall Dimension: 137(D) × 130(W) × 35(T) mm
- Net Weight: Approx. 0.34kg
- Housing: Flame-retardant ABS enclosure with anti-oxidation gold-plated backplane contacts
4. Product Advantages
- Large-scale system architecture on single CPU reduces overall system hardware quantity; one main controller drives 8 racks and 4096 discrete points without redundant multi-CPU architecture, minimizing fault nodes and cabinet wiring complexity.
- Dual communication channels (Ethernet + serial) enable flexible networking with SCADA, HMI and third-party instruments; additional protocol support via co-processor modules facilitates cross-brand equipment integration for renovation projects.
- Hierarchical fault tolerance prevents full system shutdown upon remote rack disconnection or substation module failure; core safety interlock loops remain functional to mitigate unplanned outage risks.
- Customizable memory partitioning allows seamless migration of legacy project programs without massive revision, cutting workload for legacy system retrofits and replacement.
- Standardized rack modular design supports direct drop-in replacement after program download with no hardware address reconfiguration, shortening equipment maintenance downtime significantly.
- Dual protection of hardware watchdog and conformal coating eliminates mechanical consumable parts, enabling maintenance-free operation aligned with equipment overhaul cycles with only periodic LED status inspection required.
5. Application Scenarios
Thermal & Hydropower Auxiliary Control Systems
Main PLC controller for boiler draft air systems, feedwater circulation, turbine lube oil stations and hydroturbine auxiliary speed regulation, executing valve interlock, pump sequencing, closed-loop pressure/temperature regulation and fault trip logic.
Petrochemical Process Plants
Control core for furnaces, compression units and material pipeline interlock systems, realizing process data acquisition, safety cut-off and automatic sequential production management.
Light Industry Machinery & Automated Production Lines
Central control unit for packaging equipment, injection molding lines, sorting conveyors and gantry robots, coordinating servo modules and I/O boards for fully automatic process workflows.
Maintenance & Retrofit Spare Part Scenarios
Direct in-situ replacement for legacy 90-30 systems suffering CPU hardware damage, program loss or Ethernet port failure; remote I/O expansion for single-rack systems; preventive spare part inventory for annual plant automation asset management.
