Introduction
The Yokogawa F3SP28-3S Sequence CPU Module is a high-speed core processing unit designed for FA-M3 programmable automation controllers. It manages logic execution, I/O control, and system coordination across modular industrial automation systems, delivering stable and deterministic control performance for complex manufacturing environments.
Built for reliability and scalability, this CPU module is widely used in factory automation systems where fast scan cycles, large I/O handling capacity, and flexible programming are essential for efficient machine and process control.
Technical Specifications
| Parameter | Specification |
|---|
| Model | F3SP28-3S |
| Module Type | Sequence CPU Module |
| Series | FA-M3 |
| Control Method | Stored program, repetitive scan operation |
| Processing Speed | ~0.045 µs per basic instruction |
| Scan Cycle Time | Approx. 1 ms (typical for 6K steps) |
| Programming Languages | Ladder, mnemonic, structured/object ladder |
| Instruction Set | 37 basic + 324 application instructions |
| Program Capacity | Up to 30K steps (ROM writable) |
| I/O Capacity | Up to 4096 points |
| Internal Memory | 16K relay / 16K register / 32K file register |
| Communication Support | RS-232, RS-485, Ethernet (via modules) |
| Sensor Control Function | Independent high-speed scan processing |
| Diagnostics | CPU error, memory error, I/O error detection |
| Power Consumption | Approx. 450–890 mA @ 5 V DC |
| Mounting | FA-M3 base unit slot |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -20°C to 75°C |
| Humidity | 10–90% RH (non-condensing) |
| Dimensions (W × H × D) | 28.9 × 100 × 83.2 mm |
| Weight | Approx. 0.12–0.21 kg |
Applications
The F3SP28-3S CPU module is widely deployed in industrial automation systems requiring reliable high-speed logic processing and flexible control integration. Typical applications include:
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Factory automation and production line control
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Packaging and material handling systems
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Process control systems in manufacturing plants
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Multi-module PLC control architectures
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Machine automation and synchronized system control
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Distributed I/O control systems
Its processing speed and large I/O capacity make it suitable for both compact machines and medium-scale industrial systems.
Advantages
One of the key strengths of the F3SP28-3S is its high-speed instruction execution capability, achieving extremely fast scan performance suitable for time-sensitive automation tasks.
It supports a large program capacity (up to 30K steps), allowing engineers to implement complex logic, diagnostics, and multi-process control within a single CPU environment.
The module includes a sensor control function, enabling parallel high-speed scanning independent of the main cycle, which improves responsiveness in fast-changing industrial processes.
Its wide instruction set (over 300 instructions) provides flexibility for advanced control strategies, including data handling, arithmetic operations, and system diagnostics.
Additionally, it integrates seamlessly into the FA-M3 modular platform, enabling scalable expansion with I/O, communication, and motion modules.
Technical FAQs
1. What is the main function of the F3SP28-3S?
It acts as the main CPU controlling logic execution and system coordination in FA-M3 PLC systems.
2. What is its processing speed?
Basic instructions execute at approximately 0.045 µs per instruction.
3. How large is its program capacity?
Up to 30,000 steps.
4. What is the maximum I/O capacity?
Up to 4,096 points.
5. What programming languages are supported?
Ladder logic, mnemonic language, and object ladder programming.
6. Does it support high-speed control?
Yes, it is designed for high-speed scan and response applications.
7. What is the scan cycle time?
Approximately 1 ms for typical programs.
8. Can it handle complex automation systems?
Yes, it is designed for medium to large-scale industrial automation.
9. Is it compatible with other FA-M3 modules?
Yes, it integrates fully with FA-M3 I/O, communication, and motion modules.
10. What industries use it most?
Manufacturing, packaging, process automation, and machine control systems.
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