BELDEN 9841 1 PAIR MODBUS DMX
Belden 9841 is an industry-standard, high-performance shielded twisted pair cable specifically engineered for RS-485 and RS-422 serial communication applications. It features a single pair of 24 AWG stranded tinned copper conductors, dual-layer shielding for superior noise immunity, and a durable PVC jacket.
Categories:
BELDEN CABLE / RS 485 Modbus Cable
Product Description
The Belden 9841 is widely recognized as the "go-to" cable for industrial automation, building management systems (BMS), and data communication networks requiring reliable signal integrity over long distances.
Key Technical Specifications
Conductor Construction: Utilizes 24 AWG (7x32) stranded tinned copper conductors, which provides a balance of flexibility for installation and conductivity for signal transmission.
Dielectric/Insulation: Polyethylene (PE) insulation is employed, offering low capacitance which is critical for minimizing signal attenuation and distortion in high-speed digital communication.
Dual-Shielding Architecture:
Beldfoil® Shield: An overall aluminum/polyester foil shield providing 100% coverage to protect against high-frequency electromagnetic interference (EMI).
Tinned Copper Braid: A 90% coverage tinned copper braid shield provides excellent low-frequency interference protection and enhances the mechanical robustness of the cable.
Outer Jacket: A Polyvinyl Chloride (PVC) jacket provides flame retardancy (rated CM) and protects the internal components from environmental factors.
Impedance: Designed with a nominal characteristic impedance of 120 Ohms, which is the standard requirement for RS-485 termination to prevent signal reflections.
Primary Applications
RS-485 / RS-422 Networks: Ideally suited for multidrop industrial communication protocols.
Data Transmission: Reliable choice for connecting PLCs, HMIs, VFDs (Variable Frequency Drives), and various industrial sensors.
Automation Systems: Often used in HVAC controls, lighting management, and security systems where consistent data transmission is vital.
Key Technical Specifications
Conductor Construction: Utilizes 24 AWG (7x32) stranded tinned copper conductors, which provides a balance of flexibility for installation and conductivity for signal transmission.
Dielectric/Insulation: Polyethylene (PE) insulation is employed, offering low capacitance which is critical for minimizing signal attenuation and distortion in high-speed digital communication.
Dual-Shielding Architecture:
Beldfoil® Shield: An overall aluminum/polyester foil shield providing 100% coverage to protect against high-frequency electromagnetic interference (EMI).
Tinned Copper Braid: A 90% coverage tinned copper braid shield provides excellent low-frequency interference protection and enhances the mechanical robustness of the cable.
Outer Jacket: A Polyvinyl Chloride (PVC) jacket provides flame retardancy (rated CM) and protects the internal components from environmental factors.
Impedance: Designed with a nominal characteristic impedance of 120 Ohms, which is the standard requirement for RS-485 termination to prevent signal reflections.
Primary Applications
RS-485 / RS-422 Networks: Ideally suited for multidrop industrial communication protocols.
Data Transmission: Reliable choice for connecting PLCs, HMIs, VFDs (Variable Frequency Drives), and various industrial sensors.
Automation Systems: Often used in HVAC controls, lighting management, and security systems where consistent data transmission is vital.
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