COMNET 8-Channel Contact Closure Single Mode Receiver (Non-Latching, Up to 43 mi)

COMNET 8-Channel Contact Closure Single Mode Receiver (Non-Latching, Up to 43 mi)

COMNET 8-Channel Contact Closure Single Mode Receiver (Non-Latching, Up to 43 mi)

COMNET 8-Channel Contact Closure Single Mode Receiver (Non-Latching, Up to 43 mi)

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  • 1Description
Provided by third party:

The ComNet FDC8NLR 8-channel contact closure receiver unit provides up to eight independent normally-open (NO) dry contact closures over one multimode or single-mode optical fiber. Microprocessor-based logic in the FDC8 transmitter detects a customer-furnished switch or contact closure, and encodes the closure into robust data packets that are mapped and transmitted to the FDC8NLR receiver. Packets received with excessive bit errors will not result in random changes in the receiver relay contact resting or actuated states, making this system ideal for mission-critical remote switching applications. Solid-state non-latching relays are utilized for high level of long-term system reliability and trouble-free operation. The relay contacts automatically default to a normally-open state in the event of a loss of prime operating power or a loss of the received optical signal. These receiver modules incorporate status indicating LEDs for rapidly providing a local indication of each contact closure channel, optical link continuity, and operating power. Plug-and-play design ensures ease of installation and operation, and no optical or electrical adjustments are ever required.

Key Features
  • Receive up to eight contact closures over one optical fiber
  • Eight channel Point-to-Point architecture
  • Power and eight individual channel status LED indicators
  • Eight solid-state relays
  • Built-in relay surge protection
  • Automatic resettable solid-state current limiters
  • Hot-swappable rack modules
  • Interchangeable between stand-alone or rack mount use
UPC: 845770006025
Table of Contents
  • 1Description


Device Type Contact closure extender
Form Factor External
Connectivity Technology Wired
Max Transfer Distance 42.9 miles
Status Indicators Power, link/activity
Features Surge protection, over-current protection
Expansion / Connectivity
Interfaces 8 x contact closure (output) - terminal block
1 x network (input) - ST single-mode female
MTBF 100,000 hours
Compliant Standards FCC Part 15, RoHS, cULus, NEMA TS-2, NEMA TS-1, EN 12464
Dimensions & Weight
Width 5.3 in
Depth 6.1 in
Height 1.1 in
Manufacturer Warranty
Service & Support Limited warranty - lifetime
Environmental Parameters
Min Operating Temperature -40 F
Max Operating Temperature 167 F
Humidity Range Operating 0 - 95% (non-condensing)


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