Comnet FDC24NL, FDC24NLSFP Specsheet
24 Channel Duplex Contact Closure Transceiver
FDC24NL Series
-40º TO +75º
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.
24FLEXIBILIT YINCLUDED
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/lowline 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
* Small Form-Factor Pluggable Module. Sold separately.
LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427
FDC24NL Series
A
SPECIFICATIONS
24 Channel Duplex Contact Closure Transceiver
Contacts
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
Power
Operating Voltage Range 8 to 15 VDC (or from Rack, sold separately)
Power Consumption 5 W Max
Current Protection Automatic Resettable Solid-State Current Limiters
Electrical & Mechanical
LED Indicators Contact In/Out
Link
Summary Fault
Rack Slots 2
Circuit Board Meets IPC Standard
Size (L×W×H) 6.1 × 5.3 × 2.2 in (15.5 × 13.5 × 5.6 cm)
Shipping Weight <2 lb / 0.9 kg
Environmental
MTBF >100,000 hours
Operating Temp -40˚ C to +75˚ C
Storage Temp -40˚ C to +85˚ C
Relative Humidity 0% to 95% (non-condensing)¹
Connectors:
Contact Input/Output RJ-45
Data Bus RJ-45
Power Screw Terminals
Optical 100FX SFP Slot (SFP Models Only)
GENCY COMPLIANCE
ORDERING INFORMATION
Part No. Description Maximum Distance
FDC 24NL 24-Channel Duplex Contact Closure Transceiver (Non-Latching Relays), RS-422 Interface 100 m (328 ft)
FDC24NLSFP 24-Channel Duplex Contact Closure Transceiver (Non-Latching Relays), SFP Interface SFP Dependent
Accessories
Options
DC Plug-in Power Supply, 90-264 VAC, 50/60 Hz (Included, for benign 0º to 50ºC applications only. Hardened power supply available, consult factory)
[1] Add ‘/C’ for Conformally Coated Circuit Boards to extend board to condensation conditions(Extra charge, consult factory)
User-selection of SFP modules (Extra charge, see SFP data sheets for product numbers and compatibility before ordering)
DIN-Rail Mounting Adaptor Plate Kit – With mounting hardware (Optional, order model DINBKT1 or DINBK T4)
In a continuing effort to improve and advance technology, product specifications are subject to change without notice.
TYPICAL APPLICATIONS
Point-to-Point
C C
24 24
FDC24NLSFP
Data Bus
Fiber OR RS-422
FDC24NLSFP
CC CC CC
2424 2424 2424
Max 12 units
FDC24NLSFP FDC24NLFDC24NL FDC24NLFDC24NL
3 CORPORATE DRIVE
8 TURNBERRY PARK ROAD
|
DANBURY, CONNECTICUT 06810
|
GILDERSOME
Fiber OR RS-422 Max 12 units
FDC24NLSFP
|
|
MORLEY
|
USA
T: 203.796.5300
|
LEEDS, UK LS27 7LE
|
F: 203.796.5303
|
T: +44 (0)113 307 6400
|
TECH SUPPORT: 1.888.678.9427
|
F: +44 (0)113 253 7462
|
INFO-EUROPE@COMNET.NET
Optical Fiber
RS-422 Link
|
INFO@COMNET.NET
09 Aug 2018© 2018 Communic ation Netwo rks. All Righ ts Reserv ed. “ComNet ” and the “ComNe t Logo” are regi stered tra demarks of Co mmunication Ne tworks.
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