Spec Sheet

ManualsBrandsComnet ManualsFiber Optic Transmission24 Channel Duplex Contact Closure Transceiver (Non-Latching Relays), SFP Interface

FEATURES

› Supports multiple units with the same address providing one-

to-many or many-to-one contact closure type scenarios.

› 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.

› Designed to meet full compliance with the environmental

requirements (ambient operating temperature, mechanical

shock, vibration, humidity with condensation, high-line/low-

line voltage conditions and transient voltage protection) of

NEMA TS-1/TS-2 and the Caltrans Specification for Traffic

Signal Control Equipment.

› Indicating LEDs for monitoring contact closure status and

summary fault

› Unique cascadable data bus design allows for easy

system expansion of up to 12 uniquely addressed units

(288 unique duplex contacts) over a single SFP port or

RS-422 copper circuit.

› Automatic resettable solid-state current limiters

› Hot-swappable rack modules

› Interchangeable between stand-alone or rack mount use –

ComFit

› Lifetime Warranty

APPLICATIONS

› Alarm Event Triggering

› Fire Alarm & Intrusion Detection Systems

› Lane/Gate Control

› PIR Signal Transmission

› Building Automation and Environmental Control Systems

The ComNet FDC24NL Series contact closure transceiver units provide transmission of up to

twenty four independent duplex dry switch or relay contact closures using a single SFP* optical

port or any four-wire RS-422 copper circuit. The FDC24NL Series supports an integrated field

expandable RS-422 data bus allowing up to 12 uniquely addressed units to be connected to

the bus providing up to 288 unique duplex contact closures over a single SFP optical port or

RS-422 copper circuit.

The contact closure information is sent in packets that are ordered and encoded, ensuring

extremely robust transmission. Packets that are garbled, packets out of sequence, and

transmission bit errors will not cause random changes of state on the contact relays. One relay

can be optionally re-purposed as a summary fault alarm contact and is triggered in the event

that the unit loses fiber or RS-422 bus communications. The FDC24NL series is offered with

non-latching solid state relays. Each module incorporates link and individual status indicating

LEDs for monitoring confirmation of contact closure input and output of each of the twenty four

channels. Packaged in the exclusive ComNet ComFit housing, these units may be either wall

or rack-mounted, or may be DIN-rail mounted by the addition of ComNet model DINBKT1 or

DINBKT4 adaptor plate.

FDC24NL Series

24 Channel Duplex Contact Closure Transceiver

24FLEXIBILITYINCLUDED

LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427

-40º TO

75º

* Small Form-Factor Pluggable Module. Sold separately.

Summary of content (2 pages)

PAGE 1
24 Channel Duplex Contact Closure Transceiver FDC24NL Series INCLUDED FLEXIBILITY -40º TO +75º 24 The ComNet FDC24NL Series contact closure transceiver units provide transmission of up to twenty four independent duplex dry switch or relay contact closures using a single SFP* optical port or any four-wire RS-422 copper circuit.
PAGE 2
4 Channel Duplex Contact Closure Transceiver FDC24NL Series SPECIFICATIONS Contacts Electrical & Mechanical LED Indicators Rack Slots Circuit Board Size (L×W×H) Shipping Weight Input/Output Channels 24 Input Contacts Normally open Output Contact Rating 30 VDC, 1A, resistive load only, normally open, non-latching Response Time <100 msec Summary Fault Alarm User selectable for relay 24 as summary fault relay or normal operation Contact In/Out Link Summary Fault 2 Meets IPC Standard 6.1 × 5.