Description

Yokogawa F3XC08-0C No-voltage Contact Input Module

The Yokogawa F3XC08-0C, also cataloged as the F3XC08-0C No-voltage Contact Input Module, operates as a dedicated hardware component for detecting and interfacing ON/OFF dry-contact signals within FA-M3 PLC platforms.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa F3XC08-0C
Origin	Japan
Weight	170 g
Dimensions	Compact module, standard FA-M3 form factor
OperatingTemp	0 degC to 55 degC
PowerConsumption	75 mA at 5 V DC
InputType	No-voltage contact (dry contact)
NumberOfInputs	8 channels
IsolationMethod	Transformer isolation per channel
InputRatings	5 V DC min., 20 mA max.
ONResistance	Max 200 Ω
OFFResistance	Min 100 kΩ
MaxSimultaneousInputs	100%
InputResponse	Sampling time selectable: 0 μs, 62.5 μs, 250 μs, 1 ms, 16 ms (response = sampling period + 1 ms max)
Connection	10-point terminal block, M3.5 screw
Common	Separate commons per input
Interrupt	Supported per input

Process Control Module Features

• Channel-to-Channel Isolation: Each input has a dedicated common line, preventing electrical cross-talk and maintaining signal integrity in noisy environments.
• DCS Integration: Compatible with 4-20 mA HART loop protocol systems for direct process monitoring.
• Cold Junction Compensation (CJC): Maintains stable detection thresholds across ambient temperature variations.
• Field Signal LED Indicators: Provides instantaneous visual verification of ON/OFF input states.

Frequently Asked Questions

Q: Can the F3XC08-0C handle external voltage on the input terminals?
A: No, the inputs are designed for dry contacts only. Applying external voltage may damage the module.

Q: What is the input response time range?
A: The input sampling time is selectable from 0 μs, 62.5 μs, 250 μs, 1 ms, to 16 ms. The effective response time is the sampling period plus 1 ms maximum.

Q: Is hot-swapping supported for this module?
A: No, the module does not support hot-swap operation. Power must be removed from the rack prior to installation or removal.

Field Installation Guidelines

• Ensure separate commons are properly wired for each channel to maintain isolation.
• Route field signal wiring away from high-voltage AC or noisy switching lines to minimize interference.
• Use recommended copper wire cross-section (0.33–0.82 mm²) and tighten M3.5 screws to 0.8 N·m.
• Verify LED status indicators after wiring before applying power to the system.
• Maintain transformer isolation distance and avoid bridging terminals between channels.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems