F3XD16-3H Yokogawa FA-M3 Quick-Response 24V DC Input Module

Yokogawa F3XD16-3H | Fast Digital Signal Acquisition for FA-M3

The Yokogawa F3XD16-3H is a 16-point DC input module for the Yokogawa FA-M3 programmable controller system. It receives 24 V DC field signals and transfers their states to the controller for logic processing, sequencing, and equipment monitoring.

This quick-response input module uses photocoupler isolation to separate field input circuits from internal logic circuits. Its configurable input sampling time supports applications that require different response characteristics.

Engineers can select sampling settings from 0 μs, 62.5 μs, 250 μs, 1 ms, and 16 ms. The module also supports point-specific interrupt configuration, helping controllers respond to selected input events.

01 | Product Identity and Core Features

• Manufacturer: Yokogawa
• Model: F3XD16-3H
• Product family: FA-M3
• Module type: DC digital input module
• Input configuration: Sink input, positive common
• Rated input voltage: 24 V DC
• Number of input points: 16
• Isolation: Photocoupler isolation
• Response class: Quick-response type
• Field connection: 18-point M3.5 screw terminal block

02 | Electrical Specifications at a Glance

Signal compatibility note: Check both voltage and current thresholds when selecting field sensors. A nominal 24 V signal alone does not guarantee reliable switching if the sensor has excessive leakage current or insufficient ON-state current.

03 | Input Timing and Event Response

The F3XD16-3H provides five selectable input sampling settings. The same choices apply to OFF-to-ON and ON-to-OFF transitions.

These values describe selectable input sampling settings. They do not necessarily represent the complete end-to-end response time of the PLC program and output device.

Actual system response also depends on controller scan execution, interrupt configuration, field wiring, and the connected equipment.

04 | Installation and Commissioning Notes

Correct installation begins with confirming the module suffix, input polarity, and field supply arrangement. The F3XD16-3H uses a sink-input configuration with positive common.

1. Confirm the system: Verify that the target controller rack or base supports this FA-M3 module.
2. Isolate power: Follow the controller manufacturer's procedures before inserting or removing modules.
3. Check polarity: Confirm the positive-common arrangement against the official wiring diagram.
4. Verify field voltage: Keep the input supply within 20.4–26.4 V DC during normal operation.
5. Inspect terminals: Check terminal identification, conductor condition, and screw tightness.
6. Set sampling time: Choose the required input sampling option in accordance with the application.
7. Test each channel: Confirm the PLC status changes when the corresponding field device switches.
8. Validate event handling: Test interrupt behavior where the application uses point-specific interrupts.

Do not assume that a terminal assignment matches another module in the same product family. Confirm the exact model's wiring information before connecting field signals.

05 | Compatible Equipment and Typical Applications

This module suits FA-M3 control systems that need isolated, 24 V DC discrete signal acquisition. Typical applications include:

• Packaging machinery: Detect product presence, guard states, and machine sequence conditions.
• Conveyor systems: Read photoelectric sensors, proximity switches, and position switches.
• Assembly equipment: Monitor cylinder end positions, fixture confirmation, and part detection.
• Material handling: Collect limit-switch and equipment-ready signals.
• Process auxiliaries: Monitor pump status, valve limit switches, and local equipment interlocks.
• Machine safety interfaces: Read auxiliary status contacts where the overall safety design permits. This standard input module must not replace a certified safety input system.
• Automated inspection equipment: Acquire trigger and presence signals for sequence control.

Compatibility depends on the installed FA-M3 platform, module configuration, and application requirements. Confirm the controller hardware manual before ordering a replacement.

06 | Field Diagnostics and Troubleshooting

When a field signal does not appear correctly in the PLC program, check the complete signal path rather than replacing the module immediately.

Practical commissioning example: A proximity sensor switches correctly at the machine but its PLC input remains OFF. Measure the voltage between the input terminal and its designated common while the sensor is ON. Then verify the positive-common wiring and the sensor's output type before suspecting an internal module fault.

07 | Global PLC Spare HUB's Insight

For the F3XD16-3H, the most important selection detail is the combination of input polarity and response configuration. Matching only the channel count and nominal voltage can lead to wiring or timing problems.

In a fast indexing machine, an engineer may select a short sampling interval to capture brief sensor transitions. The engineer must also verify that the pulse lasts long enough for the complete controller application to process it.

For equipment with long field cables, check the actual voltage at the module terminal during switching. Voltage drops, poor connections, and electrical noise can produce symptoms that resemble module failure.

When replacing an installed module, record the existing sampling settings and interrupt assignments first. After installation, test both ON and OFF transitions across representative channels before returning the machine to production.

08 | Five Engineering FAQs

Q1. Can the F3XD16-3H reliably detect a 24 V DC signal from a three-wire proximity sensor?

It can work when the sensor's output type, polarity, ON-state current, and common arrangement match the module requirements. Check the sensor wiring diagram and confirm the voltage at the input terminal under load.

Q2. What should engineers consider when using the 0 μs sampling setting?

The setting identifies the module's specified sampling mode, not zero total system latency. Controller execution, pulse duration, and application logic still affect whether an event is detected and processed.

Q3. Is the F3XD16-3H suitable for direct connection to a two-wire sensor?

Do not assume compatibility from the rated voltage alone. Two-wire sensors can have OFF-state leakage current that affects digital input behavior. Check the sensor's leakage specification against the module's OFF threshold.

Q4. How should a technician investigate a group of inputs that fail simultaneously?

Start with the shared common connection and field supply. Measure the supply under operating conditions and inspect terminal continuity. If the supply and wiring are correct, test individual signals before concluding that the module has failed.

Q5. What information should buyers provide when sourcing a replacement?

Provide the complete model number, controller family, existing wiring details, required quantity, and operating environment. Photos of the module label and terminal arrangement can help confirm the requested configuration before shipment.

9 | Packaging, Shipping, and Warranty

• Product model: Yokogawa F3XD16-3H
• Package quantity: One module per unit unless the quotation specifies otherwise.
• Shipping options: FedEx, UPS, and DHL, subject to destination and service availability.
• Dispatch lead time: Typically 24–48 hours after order confirmation for available stock.
• Warranty: 12 months under the supplier's written warranty terms.
• Order support: Model verification, compatibility review, and shipping coordination are available upon request.

The 12-month warranty follows the supplier's stated terms. Manufacturer warranty coverage applies only when explicitly confirmed in writing.

Request a Quote for Yokogawa F3XD16-3H

Need a Yokogawa FA-M3 16-point DC input module for maintenance, replacement, or a new control project?

Contact Global PLC Spare HUB with the model number, required quantity, destination country, and controller details. Request a quotation for pricing, availability, compatibility checks, and international shipping options.

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