RLFDX485M2/24DC Comnet Substation-Rated RS-485 Serial Data link/Repeaters MM 2 Fiber - 24VDC

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 roadsidelectronic 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.

Specifications

Data

• Data Rate - DC to 2 Mbps
• Data Transmission - Asynchronous, simplex OR Full Duplex
• Bit Error Rate - 10-E9 Max.
• Point to Point Latency - 500 nsec Max.
• Repeat Latency - 400 nsec Max.

Fiber Optical Parameters

• Optical Budget Typical - 19.5 dB
• Output Power Typical - -10.5 dBm peak
• Receiver Sensitivity Typical - -30 dBm peak (62.5 μ/125)
• Wavelength - 850 nm
• Compatible Fiber Type - 50-200 μm
• Transmission Distance - Up to 5 km (62.5 μ/125 Cable @ 3 dB/km)
• Configuration Switches
  • Half/Full Duplex
  • AC/DC
  • Link/Repeat
  • Biasing Resistors In/Out
  • Data Inversion Mode
  • Enable Holdover (4 settings)
  • 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 422/485
  • Input Impedance - 750 Ω
  • Input Voltage - 12 to -7 Volts Max referenced to signal common, +/-6 Volts differential Max
• Outputs
  • Output Impedance - >250 Ω
  • Driver Output - 50 mA

Power Required

• 24 VDC - +9 to 36 VDC @ 250 mA (3 W)
• 48 VDC - +/-36 to 59 VDC @ 250 mA (4 W)
• HV - +/-88 to 300 VDC @ 35 mA (4 W)or 85 to 264 VAC @ 35 mA (4 W)

Power Dissipation BTU/H

• 24 VDC - 10 BTU/hr
• HV & 48 VDC - 20 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 x L x H)
  • HV & 48 VDC - 4.1 x 5.1 x 1.3 in (10.41 x 12.95 x 3.3 cm)
  • 24 VDC - 2.0 x 5.1 x 1.3 in (5.08 x 12.95 x 3.3 cm)

Environmental

• MTBF - >250,000 hours
• Operating Temperature - -40°C to +85°C
• Storage Temperature - -40°C to 85°C
• Relative Humidity - 0% to 95% (non-condensing)¹

RLFDX485M2-24DC Specifications PDF