Comnet FDC24NL 24 Channel Duplex Contact Closure Transceiver (Non-Latching Relays), RS-422 Interface

The Comnet FDC24NL 24 Channel Duplex Contact Closure Transceiver is designed for reliable and efficient transmission of up to twenty-four independent duplex dry switch or relay contact closures. It utilizes a single SFP optical port or a four-wire RS-422 copper circuit, providing a robust solution for various applications. This transceiver supports an expandable RS-422 data bus, allowing multiple units to be connected, ensuring high flexibility and scalability. With features such as automatic error correction and status indication, the FDC24NL ensures dependable operation while complying with stringent environmental standards.

Comnet FDC24NL Key Features

• Expandable System: Supports multiple units with the same address for versatile contact closure scenarios, enhancing system flexibility.
• High Capacity: Transmits up to twenty-four duplex independent dry switch or relay contacts over one SFP fiber port, or via a 4-wire RS-422 copper circuit, offering significant transmission capabilities.
• Environmental Compliance: Designed to meet NEMA TS-1/TS-2 and Caltrans Specification requirements, ensuring reliability in harsh conditions.
• Status Indication: Indicating LEDs for monitoring contact closure status and summary fault enhance operational visibility and troubleshooting.
• Cascadable Data Bus: Unique design allows easy expansion with up to 12 uniquely addressed units (288 unique duplex contacts) over a single SFP port or RS-422 copper circuit.
• Current Limiting: Automatic resettable solid-state current limiters provide additional protection and reliability.
• Hot-Swappable Modules: Rack modules can be hot-swapped, minimizing downtime during maintenance or upgrades.
• Flexible Mounting Options: Interchangeable between stand-alone or rack mount configurations for easy integration into existing systems.

Comnet FDC24NL Detailed Specifications