F3SP28-3S | Yokogawa Sequence CPU Module

Product Overview

The Yokogawa F3SP28-3S is a Sequence CPU Module for the FA-M3 series, offering robust control for medium-scale industrial automation. With 1.5 MIPS processing speed, 8 MB memory, and support for up to 4096 I/O points, it handles complex sequence logic, data processing, and motion coordination. The stored-program repetitive operation mode ensures deterministic scan times for reliable continuous operation.

Key Specifications

• CPU Speed: 1.5 MIPS (Million Instructions Per Second)
• Memory Capacity: 8 MB
• I/O Points: Up to 4096
• Programming Languages: Ladder logic, structured text, function block diagram
• Control Method: Repetitive operation based on stored programs
• I/O Method: Refresh method / Direct I/O instruction
• Max Program Blocks: 1024
• Power Supply: 24V DC (via backplane)
• Operating Temperature: -20 to 60°C
• Weight: 476 g (1.05 lbs)

Compatibility & Applications

Compatible with all FA-M3 I/O modules, communication modules, and base units. Suitable for manufacturing production lines, packaging equipment, material handling systems, utility control, and assembly automation where reliable sequence control with moderate I/O capacity is needed.

FAQ

• Q: What is the difference between F3SP28-3S and F3SP71-4S? A: F3SP71-4S offers higher performance (60K steps, 0.00375 μs speed, built-in Ethernet/USB), while F3SP28-3S is optimized for medium-scale applications with 8 MB memory and 4096 I/O points.
• Q: Does F3SP28-3S have built-in Ethernet? A: No, for Ethernet connectivity, add an F3LE12-0T or F3LE01-5T communication module.
• Q: What revision is this module? A: This is typically supplied as REV.12.09 or later; verify revision for specific firmware features.
• Q: Can it perform motion control? A: Basic positioning is possible with F3YP series positioning modules; for advanced motion, consider F3NC series modules.

Installation Guide

1. Power off the FA-M3 system completely.
2. Insert F3SP28-3S into the designated CPU slot on the base module.
3. Ensure the module is firmly seated and the locking tab is engaged.
4. Connect programming cable (RS-232 or via F3LC11-1F) for initial setup.
5. Restore power and observe CPU RUN/ERROR LEDs for normal status.
6. Download sequence program via WideField3 and perform functional tests.

Selection Tips

• Select F3SP28-3S for medium-scale applications (up to 4096 I/O points) without built-in networking requirements.
• For larger systems or integrated Ethernet, upgrade to F3SP71-4S or F3SP76 series.
• For small, cost-sensitive applications, F3SP21-0N or F3SP25-2N may be sufficient.
• Always verify total I/O count and program memory requirements before CPU selection.