2Core 24AWG Purple Shielded Profibus 2C 0.25mm Bus Cable Flexible Data Bus Electrical Field Communication Cable
A bus cable is a specialized cable used in fieldbus networks, which are digital, serial communication systems that connect industrial field devices (sensors, actuators, drives) to a central controller (PLC). It serves as the shared data 'highway' for multi-drop networks.
1. Core Specifications & Construction
Bus cables are defined by the specific protocol they serve. However, they have common design principles.
Conductor:
Material: High-grade, fine-stranded copper, often tinned for corrosion resistance and easier soldering/termination.
Number: Typically a twisted pair (2 conductors) for the data signal. Many include additional pairs or wires for power (e.g., 2 data + 2 power).
Insulation:
Material: High-quality PVC, PE, or PP with stable dielectric properties.
Purpose: Maintains precise conductor spacing, which is critical for maintaining the cable's characteristic impedance.
Shielding:
Essential. A combination of a foil shield (for 100% coverage) and a high-density (≥85%) braided copper shield. This provides protection against Electromagnetic Interference (EMI), which is critical in noisy industrial environments.
Jacket (Outer Sheath):
Material: Robust PUR (Polyurethane) or advanced PVC. PUR is preferred for its exceptional abrasion resistance, oil resistance, and mechanical toughness.
Color: Often follows a protocol standard (e.g., purple for PROFIBUS, orange for DeviceNet, green for CANopen).
Key Electrical Specifications (Varies by Protocol):
Characteristic Impedance: The most critical parameter. Must match the transceivers on the devices.
PROFIBUS: 150 Ω
CAN / CANopen / DeviceNet: 120 Ω
MODBUS RS-485: ~120 Ω
Propagation Delay: Must be controlled for timing-sensitive networks.
Loop Resistance & Capacitance: Defined per meter, affecting maximum network length and node count.
2. Key Advantages & Benefits
Compared to traditional point-to-point wiring (each sensor gets 2-4 wires back to the PLC), bus cables offer:
Drastic Reduction in Wiring & Cost: One twisted pair replaces hundreds of individual wires, slashing material, installation, and duct space costs.
Simplified Installation & Diagnostics: Standardized connectors and cabling make installation faster. Diagnostic capabilities are built into the protocol.
High Noise Immunity: The combination of differential signaling (on the twisted pair) and high-quality shielding makes the system extremely robust against EMI from motors, drives, and relays.
Deterministic Communication: Data exchange is scheduled and predictable, which is essential for real-time control applications.
Bidirectional Data & Diagnostics: Devices can report their status, errors, and process values over the same two conductors.
Support for Power + Data: Many bus systems (e.g., PROFIBUS, AS-i, IO-Link) deliver 24V DC power to field devices over the same cable, eliminating separate power supplies.
Scalability: It is easy to add or remove devices on the network without major rewiring.
3. Primary Applications & Common Bus Systems
Bus cables are the backbone of modern factory and process automation.
Common Use Cases Across Industries:
Automotive Plants: Connecting thousands of sensors and valves on assembly lines.
Packaging Machines: Synchronizing servos, sensors, and vision systems.
Material Handling: Controlling conveyors, sorters, and palletizers.
Process Plants: Connecting valve positioners, flow meters, and analyzers in refineries or chemical plants.
Selection Consideration:
Protocol: Match the cable exactly to the network protocol (impedance is critical!).
Environment: Choose jacket material (PUR for oily/wet, PVC for general use) and appropriate IP ratings.
Installation Type: Fixed, flexible, or for continuous movement in cable carriers (requiring high-flex versions).
Length & Speed: Ensure the cable is rated for the desired network length and baud rate.
The Golden Rule: Always use the cable type certified for your specific fieldbus system. Using a generic cable or the wrong bus cable will lead to signal integrity issues, communication errors, and network downtime.
Package
FAQS:
Q1: Are you a factory or trading company?
A1: We are a manufacturer.
Q2: Where is your factory located? How can I visit there?
A2:Our factory are located in jieyang city. You can fly to Shenzhen or Guangzhou international airport. And tell us your flight No. We will arrange to pick you up.
Q3: How can I get a sample to test your quality?
A3:We can provide free samples for your test and checking, you just need to bear the freight charge.
Q4:What payment method do you accept?
A4:T/T(Bank transfer), Western Union, Money Gram, Paypal, etc.
Q5: Can you put my brand name (logo) on these products?
A5: Yes! The professional OEM services will be welcomed to us. Our factory accepts to make the logo free for bulk orders.
Q6: May I know the status of my order?
A6: Yes .The order information and photos at different production stage of your order will be sent to you and the information will be updated in time.
Q7: What’s the leading time? (How long do you need to prepare my goods?
A7: Delivery (no more than 1000pcs) will be arranged within 10-15 days after payment, and arrive you within about 1 month via sea shipping.
Q8: How will you deliver my goods to me?
A8 Your purchases will be delivered by DHL, UPS, FedEx, TNT, EMS your door. Air Cargo and Sea Cargo, Direct line, Air Mail also be accepted according to clients' request.
Q9: Can you provide us more other products to us to help us to save more shipping costs?
A9: Yes. There’re kinds of Indoor Cables, Outdoor Cables, Coaxial Cables, Telephone Cables, Fiber Optic Cables and Accessories will be the main products line of Factory. The OEM bulk order will be accept as well.
0086-755-23002989
info@hotonlink.com
hotonlink
0086-18123718803
Room 506, 5th floor No.48 Huaide South Road,Cuigang Industrial Zone 4,Fuyong Street,Baoan Shezhen China 
