Comnet RLFDX485M2-48DC, RLFDX485M2-HV, RLFDX485S2-24DC, RLFDX485S2-48DC, RLFDX485S2-HV Specsheet
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Substation-Rated RS-232, RS-422, RS-485 2/4 Wire, & TTL Logic Data
Link/Repeater for Replacement of Garrettcom/Dymec 5800-Series
RLFDX(485,232)(M,S)2/(24DC,48DC,HV) Series
EXCLUSIVE
The ComNet RLFDX series of serial data link/repeaters are substation-rated and industrially
hardened form, fit, function and completely backwards-compatible replacements for the popular
Garrettcom/Dymec 5843, 5844, 5845, and 5846-series of serial data link/repeaters. They are
designed for deployment in environments where high levels of electromagnetic noise and
interference (EMI) and severe voltage transients and surges are routinely encountered, such as
electrical utility substations and switchyards, heavy manufacturing facilities, trackside and roadside
electronic equipment, and other difficult out-of-plant applications. Optical connectivity provides
significantly extended transmission distances compared to copper media; high levels of electrical
isolation; enhanced reliability and protection for peripheral IEDs, RTUs, and other equipment; and
operational safety.
The RLFDX series of serial data link/repeaters are easily field-configurable for point-to-point, pointto-multipoint/master-slave, loop, or bus topologies. They may be also used for electrical data
protocol conversion: an RLFDX232 RS-232 modem and IED/RTU can communicate directly with an
RLFDX485 RS-422/RS-485 modem and IED/RTU.
The extremely versatile and simple-to-install RLFDX series is ideal for any mission-critical application
where very high levels of reliability and network availability are of the utmost importance.
FEATURES
› Fully electrically, mechanically, and optically identical to and
backward-compatible with the Garrettcom/Dymec 5843, 5844,
5845, and 5846 Series. A ComNet RLFDX may directly replace a
Dymec unit anywhere within the network.
› Full-duplex, half-duplex, or simplex transmission of RS-232,
RS-422, RS-485 2/4-wire data, or TTL logic
› Tested and certified to meet or exceed the requirements of
IEEE 1613 Class 2 for electrical utility substations
› RS-232 Version: DTE/DCE switching
› Diagnostic test mode feature tests the copper and optical
connections before the connected IED or RTU is active within
the network.
› Extended ambient operating temperature range of -40º to +85º C,
with no fan/forced air cooling, for use in virtually any environment
› Optical transmission distances of up to 5 km over multimode
fiber; 30 km over single-mode fiber
› +9 to 36 VDC, +/-36 to 59 VDC, or HV AC/DC (+/-88 to 300
VDC/85-264 VAC) operating power options. HV DC input
permits operation directly from station battery bus power.
48 VDC and HV models’ DC inputs are isolated from ground,
allowing operation from positive or negative DC sources.
› Internal/self-contained high-reliability power supply – a screw
terminal block connects directly to the power source for
permanent, reliable, and maintenance-free operation
› LED status indicators confirm operating status
› Rugged galvannealed and powder-coated panel-mount enclosure
CLA SS 1 DIV 2
› IP-30 rated for ingress protection (2.5 mm objects)
› Conformal coating of the circuit boards is optionally available,
for use in humidity with condensation conditions (extra charge,
see ordering information).
› Made in the USA
› Lifetime Warranty
-40˚ TO 85˚ C
1CONVERTERSUBSTATION
APPLICATIONS
› Electrical substation automation & SCADA networks,
protective relaying systems
› Power transmission & distribution systems, remote wind
farm, hydroelectric, and solar/photovoltaic power generation
facilities, and other electrical utility-specific applications
› Controlled access to electrical substations and power
generating facilities, and other high-value, mission-critical sites
› Industrial/Factory Automation & Process Control SCADA
Networks
› Chemical and petrochemical refining and processing facilities,
oil and gas pipelines/transmission systems, and mining
installations
› Food processing operations
› Wastewater treatment plants
› Railway/trackside control and monitoring systems
› ITS/Transportation traffic signalization networks
› Integrated data transmission networks
LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427
RLFDX Series (RS232)
Substation-Rated RS-232, RS-422, RS-485 2/4 Wire, & TTL Logic Data
Link/Repeater for Replacement of Garrettcom/Dymec 5800-Series
SPECIFICATIONS (RS232 Models)
Data
Data Rate DC to 250 kbps
Data Transmission Asynchronous, simplex OR Full Duplex
Bit Error Rate 10-E9 Max.
Point to Point Latency 4 μS
Repeat Latency 400 nsec Max.
Fiber Optical Parameters
(At Maximum Operating Temperature)
Optical Budget Typical Multimode: 19.5dB
Single Mode: 19dB
Output Power Typical Multimode: -10.5 dBm peak
Singlemode: -14.5 dBm peak
Receiver Sensitivity Typical Multimode: -30 dBm peak (62.5 μ/125)
Single Mode: -33.5 dBm peak (9 μ/125)
Wavelength Multimode: 850 nm
Single Mode: 1310 nm
Transmission Distance Multimode: Up to 5 km
(62.5 μ/125 Cable @ 3 dB/km)
Single Mode: Up to 30 km
(9 μ/125 Cable @ 0.5 dB/km)
Compatible Fiber Type Multimode: 50-200 μm
Single Mode: 9 to 13 μm
Configuration Switches
DTE/DCE
AC/DC Coupled
Link/Repeat
Pin 8 Drive Current
Pin 6 +5 VDC (DSR or CTS pull up)
Diagnostic Mode
Connectors
Optical ST
Data DB-9 (9 Pin D-Type Female)
Power Removable, 3-pin Screw Terminal Block
Electrical Parameters
Inputs
I/O Data Format EIA RS232; CCITT v.24
Input Impedance >3000 Ω
Input Voltage +/-30 Volts Max.
Outputs
Output Impedance >300 Ω
Driver Output +/- Volts into 3000 Ω
Pin 8 Output 0 to 5 V
67 or 207 Ω Source Impedance
Power Required
24 VDC Multimode: +9 to 36 VDC @ 250 mA (3W)
Single Mode: +9 to 36 VDC @ 340 mA (4.1 W)
48 VDC Multimode: +/-36 to 59 VDC @ 250 mA (4W)
Single Mode: +/-36 to 59 VDC @ 340 mA (5.5 W)
HV Multimode: +/-88 to 300 VDC @ 35 mA (4 W)
or 85 to 264 VAC @ 35 mA (4 W)
Single Mode: +/-88 to 300 VDC @ 50 mA (5.5 W)
or 85 to 264 VAC @ 50mA (5.5 W)
Power Dissipation BTU/H
24 VDC Multimode: 8.2 BTU/hr
Single Mode: 10.2 BTU/hr
HV & 48 VDC Multimode: 10.9 BTU/hr
Single Mode: 12.3 BTU/hr
Mechanical
Indicating LEDs Power Transmit Fiber
Transmit Electrical Receive Fiber
Receive Electrical
Circuit Board Meets IPC Standard
Actual Weight HV & 48 VDC: 1.06 lb / 0.48 kg
24 VDC: 0.56 lb / 0.26 kg
Dimensions (W × L × H)
HV & 48 VDC: 4.1 × 5.1 × 1.3 in (10.41 × 12.95 × 3.3 cm)
24 VDC: 2.0 × 5.1 × 1.3 in (5.08 × 12.95 × 3.3 cm)
Environmental
MTBF >250,000 hours
Operating Temperature Multimode: -40˚C to +85˚C
Single Mode: -40˚C to +70˚C
Storage Temperature -40˚C to 85˚C
Relative Humidity 0% to 95% (non-condensing)¹
ORDERING INFORMATION (RS-232/TTL Models)
Model Data Format Fiber Type Input Power Equivalent Dymec Model
RLF DX232M2/24DC RS-232/ TTL Multimode 9 to 36 VDC 5843HRT
RLFDX232M2/HV RS-232/ TTL Multimode 88 to 300 VDC / 85 to 264 VAC 5844HRT-H
RLFDX232M2/48DC R S-232/TT L Multimode 36 to 59 VDC 5844HRT-L
RLFDX232S2/24DC RS-232 /TTL Single Mode 9 to 36 VDC 5843SHRT
RLFDX232S2/HV RS-232/ TTL Single Mode 88 to 300 VDC / 85 to 264 VAC 5844SHRT-H
RLFDX232S2/48DC RS-232 /TTL Single Mode 36 to 59 VDC 5844SHRT-L
Options [1] Add suffix ‘/C’ for Conformally Coated Circuit Boards to extend to condensation conditions (Extra charge, consult f actory)
NOTE: This product requires a fiber installation with a minimum 30 dB connector return loss. The use of Super Polish Connectors is
recommended. Complies with FDA Performance Standard for Laser Products, Title 21, Code of Federal Regulations, Subchapter J
In a continuing effort to improve and advance technology, product specifications are subject to change without notice.
LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427
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