Product Core Brief
- Model: F3WD64-3N
- Brand: YOKOGAWA
- Series: FA-M3 Digital I/O Module
- Core Function: Combined digital input/output module with 32 DC inputs and 32 transistor sink outputs for FA-M3 PLC systems.
- Product Type: Digital I/O Module
- Key Specs: 32 inputs + 32 outputs | 24 V DC | TR sink output | Two 40-pin connectors
- Condition: New Original / New Surplus
Key Technical Specifications
| Parameter | Detail |
|---|---|
| Brand | YOKOGAWA |
| Model Number | |
| Product Type | Digital I/O Module |
| Applicable System | YOKOGAWA FA-M3 PLC |
| Input Points | 32 inputs, 8 points per common |
| Input Voltage | 24 V DC, 20.4–26.4 V DC |
| Input Current | 4.1 mA per point |
| Output Points | 32 outputs, 8 points per common |
| Output Type | Transistor sink output |
| Output Rating | 0.1 A per point, 0.4 A per common |
| Isolation | Photocoupler insulation |
| External Connectors | Two 40-pin connectors |
| Current Consumption | 200 mA from FA-M3 backplane |
| External Power | 24 V DC, 60 mA |
| Origin | Japan |
| Condition | New Original / New Surplus |
Note: Values above are based on the official FA-M3 F3WD64 general specification sheet for the -3N variant.
Product Introduction
The F3WD64-3N is a combined digital I/O module for YOKOGAWA FA-M3 PLC systems. It provides 32 DC input points and 32 transistor sink output points in a single FA-M3 I/O slot, helping reduce rack space while keeping input and output wiring grouped in one module.
This module is commonly used in machine control, packaging equipment, material handling, and process auxiliary systems where both discrete sensing and switching are required. Its 24 V DC sink output format is compatible with relays, solenoid valves, indicator lamps, and small contactors, while the 24 V DC inputs support typical industrial sensors and switch contacts.
QA & Testing SOP
We verify every I/O module before dispatch because field wiring faults are costly to diagnose after installation.
- Label & Model Verification: Confirm F3WD64-3N on the faceplate. The F3WD64 family includes multiple voltage and output-type variants, so the suffix must match the existing configuration.
- Visual Inspection: Check the PCB, connector housings, and label for corrosion, rework, moisture damage, or non-OEM components.
- Connector Pin Check: Inspect both 40-pin connectors for bent pins, oxidation, or loose terminals. Poor contact here is a common cause of intermittent I/O faults.
- Power-Up & LED Check: Install the module in a compatible FA-M3 rack, apply 24 V DC external power, and verify status indicators.
- Input/Output Spot Test: Verify input reading under 24 V DC and confirm output switching under load.
- ESD-Safe Packaging: Each unit is packed in anti-static material with desiccant and sealed for shipment.
Installation Pitfalls & Guide
❗ Do notse with -4N or -4P. The -3N variant is 24 V DC with sink outputs. The -4N variant uses 12 V DC, and the -4P variant adds output short-circuit protection. Using the wrong variant can cause wiring or compatibility issues.
❗ Check the external 24 V DC supply. The module requires a separate 24 V DC external power supply for I/O operation, in addition to backplane power. Missing or unstable external power will prevent inputs and outputs from functioning correctly.
❗ Respect the 0.4 A per common limit. Each output common group is limited to 0.4 A. Exceeding this limit can overheat the module or damage the output stage.
❗ Verify sink output compatibility. The transistor outputs are sink type. Loads must be wired so that current flows from the 24 V DC supply through the load into the output terminal. Source-type wiring will not work.
Replacement Steps:
- Pre-Install: Back up the PLC program, confirm the F3WD64-3N I/O address, and verify external 24 V DC wiring.
- Removal: Power down the rack and external I/O supply if required, disconnect both 40-pin connectors, and remove the module.
- Install: Seat the new module, reconnect both connectors, and verify external 24 V DC polarity.
- Power-On Test: Restore power, check LED indicators, force-test inputs and outputs, and confirm correct I/O mapping in the PLC program.
Technical FAQ
Is F3WD64-3N a 64-point I/O module? Yes. It provides 32 digital inputs and 32 digital outputs in one FA-M3 I/O slot.
Can it replace -4N? Not directly. F3WD64-4N is a 12 V DC variant, while F3WD64-3N is 24 V DC. Replacing it without checking sensor and load voltage ratings may cause malfunction.
What output type does it use? Transistor sink output, 0.1 A per point and 0.4 A per common, with Zener diode surge protection.
Does it support interrupt input? No. The F3WD64-3N input block does not support interrupt input.
Do you offer a warranty? Yes. All units carry a 12-month warranty covering functional defects under normal operating conditions.
