Product Overview

The Yokogawa F3PU20-0N is a high-capacity AC Power Supply Module designed for the FA-M3 PLC system. It converts wide-range AC input (100–240 V) into a regulated 5 V DC backplane power supply, supporting larger FA-M3 base units with higher module counts and increased system load requirements.

Compared with lower-capacity models (such as F3PU10 series), the F3PU20-0N is designed for medium to large-scale PLC systems, providing higher output current for expanded I/O and communication configurations.

Technical Specifications

Function and Working Principle

The F3PU20-0N serves as the main energy conversion unit for FA-M3 PLC racks.

Working Principle

1. AC input (100–240 V) is supplied to the module
2. Internal rectifier converts AC → DC
3. Switching regulator stabilizes output at 5 V DC
4. Stable power is distributed through the FA-M3 backplane
5. All CPU, I/O, and communication modules receive regulated power

$AC(100–240V)\to Rectification\to SwitchingRegulation\to 5VDC(4.3AOutput)$

Key Functions

• Provides regulated 5 V DC system power
• Supports higher load FA-M3 configurations
• Supplies power to CPU, I/O, and communication modules
• Enables stable operation of extended PLC racks
• Wide input voltage compatibility (100–240 V AC)
• Built-in protection against electrical faults
• Supports short-term power interruption tolerance (~20 ms)

System Role

The module acts as the central power backbone of the PLC system:

AC Power → F3PU20-0N → FA-M3 Backplane → All System Modules

It is typically used in:

• Medium to large industrial control systems
• Expanded I/O configurations
• Multi-module FA-M3 rack systems
• High-load automation environments

Installation Guidelines

• Install in FA-M3 base unit compatible with high-capacity power supplies
• Ensure correct AC wiring (100–240 V single-phase)
• Maintain proper grounding for safety
• Do not exceed rated 4.3 A output capacity
• Ensure adequate ventilation in control cabinet
• Turn off system power before installation or replacement
• Verify compatibility with base modules (e.g., F3BU09, F3BU13, F3BU16)

Compatible Systems

• Yokogawa FA-M3 PLC base units
• CPU modules (high-performance models)
• I/O modules (digital and analog)
• Communication modules (Ethernet, fieldbus, etc.)
• Expanded multi-slot rack systems

Key Advantages

• High output capacity (5 V / 4.3 A)
• Supports large FA-M3 system configurations
• Wide AC input range (100–240 V)
• Industrial-grade reliability and protection
• Compact design despite higher power output
• Stable operation under fluctuating load conditions
• Designed for long-term continuous operation

Technical FAQs

Q1: What is the main function of the F3PU20-0N?
It supplies regulated 5 V DC power to FA-M3 PLC systems with higher load requirements.

Q2: What is the difference vs F3PU10-0N?
F3PU20-0N provides higher output current (4.3 A vs 2.0 A) for larger systems.

Q3: Which systems use this power supply?
It is used in medium to large FA-M3 PLC rack configurations.

Q4: What happens if load exceeds capacity?
The built-in protection system may limit output or shut down to prevent damage.

Conclusion

The Yokogawa F3PU20-0N Power Supply Module is a high-capacity and reliable power unit for FA-M3 PLC systems. With its 4.3 A output capability and wide voltage input range, it is designed for stable operation in expanded industrial automation systems requiring multiple modules and higher power demand.