Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | F3XC08-0C |
| Base Model | F3XC08 |
| Brand | Yokogawa |
| Series | FA-M3 |
| Module Type | No-Voltage Contact Input Module |
| Number of Inputs | 8 points |
| Common System | 8 independent inputs |
| Insulation Method | Transformer isolation |
| Withstand Voltage | 500 V AC for 1 minute between external terminals and internal circuit |
| Contact Open Circuit Voltage | 5 to 7 V DC |
| Contact Closed Circuit Current | 1 to 3 mA |
| ON Resistance | 200 ohm max. |
| OFF Resistance | 100 kohm min. |
| Response Time, OFF to ON | 2.0 ms max. or 17 ms, selectable per input |
| Response Time, ON to OFF | 2.0 ms max. or 17 ms, selectable per input |
| Interrupt Function | Selectable for each input |
| Current Consumption | 75 mA max. at 5 V DC |
| External Connection | 18-point detachable terminal block, M3.5 screws |
| Weight | Approx. 170 g |
Yokogawa Contact Input and Circuit Isolation
The F3XC08-0C monitors discrete contact states through eight independent input circuits. Each input detects the electrical condition of an external dry contact using a 5 to 7 V DC open-circuit voltage and a 1 to 3 mA closed-circuit current.
Transformer isolation separates the external terminal side from the internal circuit. The specified insulation withstand voltage is 500 V AC for 1 minute. The input logic can use either the 2.0 ms maximum response setting or the 17 ms setting for both OFF-to-ON and ON-to-OFF transitions. The module also permits independent interrupt selection for each input.
Frequently Asked Questions
Q: How many contact inputs does the F3XC08-0C provide?
A: The module provides 8 independent no-voltage contact inputs.
Q: What external terminal connection does the module use?
A: The module uses an 18-point detachable terminal block with M3.5 screws.
Q: Can the input response time be selected individually?
A: Yes. The OFF-to-ON and ON-to-OFF response time can be selected between 2.0 ms maximum and 17 ms for each input.
Field Installation Guidelines
- Confirm the F3XC08-0C model before wiring the FA-M3 base configuration.
- Isolate controller power before connecting or removing the detachable terminal block.
- Connect each external dry contact to its assigned input circuit according to the applicable FA-M3 wiring documentation.
- Keep contact-input wiring separated from high-voltage power conductors and high-current switching circuits.
- Route signal wiring to minimize coupling from motors, contactors, transformers, and other noise sources.
- Use appropriate shielding and grounding practices where the installation environment requires additional noise control.
- Tighten M3.5 terminal connections correctly and inspect the wiring before energizing the controller.
- Verify the selected input response and interrupt configuration in the controller application before placing the input points into service.
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