Yokogawa F3XC08-0N Contact Input Module 8-Point

Yokogawa F3XC08-0N 8-Point No-Voltage Contact Input Module

Product Introduction

The F3XC08-0N is a no-voltage contact input module from Yokogawa, built for the FA-M3 and FA-M3V programmable logic controller series. This unit senses the open or closed state of dry contacts such as pushbuttons, limit switches, selector switches, and relay contacts. Unlike voltage input modules, it supplies its own sensing current, so field devices need no external wetting supply. The shared 8 points/common layout keeps terminal count low, which suits compact panels with straightforward wiring. Meanwhile, per-point interrupt support lets time-critical contacts bypass the normal scan cycle and trigger fast program handling.

Technical Specifications

The F3XC08-0N offers 8 input points for no-voltage contact signals. Contact ratings are 5 V DC minimum and 20 mA maximum, a low wetting current that protects small switch contacts from erosion. A valid ON state requires ON resistance of 200 Ω maximum. In contrast, OFF resistance must reach 100 kΩ minimum, which prevents leakage currents in damp or long cables from creating false inputs.

Isolation between field wiring and internal logic uses transformer isolation. This method blocks common-mode noise and ground potential differences, so the module performs well on machinery with variable-frequency drives nearby. All eight points share one common terminal, and the module allows 100% of inputs turned on simultaneously with no derating. Input response time is selectable between 2.0 ms maximum and 17 ms, and the same two choices apply to both OFF→ON and ON→OFF transitions. Interrupts can be assigned to each input point for fast event capture. Additionally, current consumption is 75 mA from the backplane.

Mechanical and Environmental Parameters

Field wiring lands on a 10-point terminal block with M3.5 screws, a familiar format that accepts ring lugs and bare wires. The F3XC08-0N weighs about 140 g and occupies one slot in the FA-M3 base unit. Because eight points share a common, the terminal block needs only ten positions, which trims harness cost and cabinet space.

For environmental limits, the module operates from 0 to 55 °C and stores between -20 °C and 75 °C. Humidity remains within 10 to 90% RH for both operating and storage conditions, and condensation is not permitted. Moreover, the surrounding atmosphere must be free of corrosive gases, flammable gases, and heavy dust. These ratings suit machine control cabinets, process rooms, and general factory floors.

Installation Guide

Correct wiring preserves the noise immunity that transformer isolation delivers. First, power down the FA-M3 base and confirm the target slot is empty. Next, slide the F3XC08-0N along the base guide rails and press until the backplane connector seats. After that, secure the module with its mounting screws. For field connections, strip wires to the specified length and tighten the M3.5 screws to the rated torque. Since all eight points share one common, keep the common conductor continuous and label it clearly at both ends. Route contact cables away from motor and drive power lines, then set the response time and interrupt assignments in the PLC configuration. Finally, apply power and verify each input toggles in the monitor.

Packaging List

• 1x Yokogawa F3XC08-0N No-Voltage Contact Input Module

• 1x Anti-static protective bag

• 1x Carton box with shock-absorbing foam

FAQ

1. What is the difference between the F3XC08-0N and the F3XC08-0C?
Both modules read 8 no-voltage contacts with transformer isolation. The F3XC08-0N shares one common across all points and uses a 10-point terminal block, while the F3XC08-0C gives each point a separate common on an 18-point block.

2. Which field devices work with this module?
It accepts dry contact closures such as pushbuttons, limit switches, float switches, and relay contacts. The module provides its own sensing current, so no external wetting voltage is required.

3. How do I choose between the 2 ms and 17 ms response times?
Pick 2.0 ms maximum for fast machine signals that need quick detection. Choose 17 ms when contact bounce or electrical noise is present, since the longer filter rejects spurious transitions.

4. Can all 8 inputs stay closed at the same time?
Yes, the maximum simultaneous ON ratio is 100%, so no derating applies. Every point can remain closed continuously without thermal issues.

5. What shipping methods do you use for international orders?
We ship worldwide through Fedex, UPS, and DHL. Tracking details are sent at dispatch so you can follow the shipment from warehouse to site.