Yokogawa F3XC08-0C No Voltage Contact Input Module

Product Overview

The Yokogawa F3XC08-0C is an 8-channel no-voltage contact input module for the FA-M3 series. It accepts dry contact inputs with 8 independent commons, making it ideal for monitoring relay contacts, limit switches, and pushbutton states. Transformer isolation provides excellent noise immunity, while selectable response times (2.0 ms or 17 ms) allow optimization for either high-speed or debounced applications.

Key Specifications

• Input Type: No-voltage contacts (dry contacts)
• Number of Inputs: 8 points
• Common System: 8 independent inputs (separate commons)
• Insulation Method: Transformer isolation
• Withstand Voltage: 500V AC for 1 minute (external terminals to internal circuit)
• Contact Open Circuit Voltage: 5 to 7 V
• Contact Closed Circuit Current: 1 to 3 mA
• ON Resistance: 200 Ω max
• OFF Resistance: 100 kΩ min
• Response Time: 2.0 ms max or 17 ms (selectable per input)
• Current Consumption: 75 mA at 5V DC
• Weight: 170 g
• Connection: 18-point detachable terminal block (M3.5 screws)

Compatibility & Applications

Installs in any FA-M3 I/O slot. Perfect for limit switch monitoring, relay status feedback, pushbutton panels, safety interlock systems, and dry-contact sensor applications where isolated, no-voltage inputs are required.

FAQ

• Q: Can I apply external voltage to the inputs? A: No, do not apply any external voltage to F3XC08-0N input terminals. Use only dry contacts.
• Q: What is the minimum contact rating required? A: External contacts must be able to make and break 5-7V open-circuit voltage and 1-3 mA closed-circuit current.
• Q: Can each input have a different response time? A: Yes, response time (2 ms or 17 ms) is selectable for each individual input.
• Q: Does it support interrupt inputs? A: Yes, interrupt function is selectable for each input for time-critical applications.

Installation Guide

1. Power off the FA-M3 system.
2. Insert F3XC08-0C into any available I/O slot.
3. Connect dry contact switches to the 18-point terminal block.
4. Set response time switches per input as required (2 ms for fast, 17 ms for debounce).
5. Restore power and verify input LEDs indicate correct on/off status.
6. Test each channel with a known good contact to ensure proper operation.

Selection Tips

• Use F3XC08-0C for dry contact applications where external voltage must not be applied.
• For DC voltage inputs (e.g., 24V DC sensors), use F3XD16-3F or F3XD32-3F instead.
• The 8 independent commons allow flexible wiring of devices from different power domains.
• Select 17 ms response time for mechanical switches to eliminate contact bounce effects.