YJ57187 1 PAIR RS485 MODBUS UNARMORED

YJ57187 is a robust, unarmored data cable designed to handle the noise-sensitive requirements of serial industrial networks. It is widely utilized in professional automation setups where consistent performance and protection against electromagnetic interference (EMI) are required.

Key Technical Specifications
Conductor Construction: 1 pair of 24 AWG (7x32) stranded tinned copper conductors, which provides excellent flexibility for routing in control cabinets and conduit.

Dielectric/Insulation: LDPE (Low-Density Polyethylene) insulation provides low capacitance, which is essential for minimizing signal attenuation and maintaining data accuracy over longer cable runs.

Shielding Architecture:

Beldfoil® Shield: An overall 100% coverage aluminum/polyester foil tape provides superior protection against high-frequency electromagnetic interference.

Tinned Copper Braid: A tinned copper braid shield (typically 50%–65% coverage) provides additional structural integrity and immunity against low-frequency EMI.

Drain Wire: Includes a tinned copper drain wire for simplified grounding and termination.

Outer Jacket: A durable, flame-retardant Polyvinyl Chloride (PVC) outer jacket, typically finished in a chrome or grey color, suitable for general industrial use.

Impedance: Designed with a nominal characteristic impedance of 120 Ohms, strictly conforming to the standard requirements for RS-485 network termination to prevent signal reflections.

Primary Applications
Industrial Communication: Ideal for RS-485/Modbus RTU networks connecting PLCs (Programmable Logic Controllers), DCS (Distributed Control Systems), and HMIs.

Process Automation: Well-suited for remote meter reading, sensor integration, and industrial control systems where reliability in noisy environments is critical.

General Instrumentation: Used across various industries including HVAC, oil and gas, and manufacturing for stable and consistent data transmission.