LI2Y(St)CY (RS 485)

LI2Y(St)CY (RS 485)

LI2Y(St)CY (RS 485)

Product Descriptions

RS-485 is a two-wire serial communication standard defined as EIA/TIA-485. These systems transmit digital data over twisted-pair veins, can travel up to 1220 m without the need for repeaters, can form 32 driver, 32 receiver chains on a single line, and can operate at speeds from 100 kbps (at 1200 m) to 10 Mbps (at 12 m) depending on the length.

Offers superior noise immunity compared to RS-232 thanks to balanced output and differential input; can be used in two-wire or four-wire (full-duplex) network configurations

Structure

• Conductor 7 × 0.20 mm² tinned copper (24 AWG)
• Insulator: PE compound
• Twisting Double twist, in plies
• Release Tape: PES tape
• General Screen Tinned earth wire + Al-PES tape + tinned copper wire mesh
• Outer Sheath: PVC compound
• Cover Color: RAL 7001 gray

Technical Specifications

Feature Value

• Conductor Resistance [Ω/km] 79
• Insulation Resistance [MΩ-km] ≥ 5000
• Effective Capacitance [pF/m] 42.1
• Characteristic Impedance [Ω] 120 ± 10 %
• Propagation Speed [%] 67
• Current Carrying [A] 2.5
• Operating Voltage [V] 300
• Test Voltage [V AC] 1200
• Bend Radius (min.) 10 × cable Ø
• Operating Temperature -40 °C ... +70 °C
• Flame Retardancy Test IEC 60332-1-2 - VDE 0482-332-1-2 - EN 60332-1-2

Place of Use

• Instrument and control engineering
• Industrial electronic systems
• Computer and office machine connections