The Smart Distributed System (SDS) is a bus system that streamlines the installation process by utilizing interoperation of intelligent inputs and outputs. The basic benefits are enhanced diagnostics, robust signal transmission, improved device response time, and overall improved communication between devices. SDS is completely open, modular, and compatible with standard networks, I/O and many controllers. The network operates with standard industrial control computers, is easily upgradeable and because of its wiring method, is easy to install.
The network can support up to 126 individually addressable devices on a single 4-wire cable. The SDS can be integrated with other control solutions by using other Controller Area Network (CAN) integrated circuits or off-the-shelf interface devices. CAN is a protocol that provides a method for both message checking and correction to ensure communication integrity and overall robustness. Characteristics of an SDS/CAN network include: ability to support up to 64 nodes at a selectable baud rate at 125, 250, 500 and 1,000kbps with a maximum network distance of 1,500 ft.
While the SDS components used provide the advanced diagnostic features, non-SDS devices can also be connected to the four-wire cable for communication and power.
DeviceBus Cables for SDS - Features and Benefits
Belden cables for SDS feature a data and power pair under the same overall rugged jacket. Each pair is shielded with a common overall drain wire for maximum signal integrity in noisy industrial environments. Key attributes include:
- Data and power in one cable
- Reduced cable and installation cost
- Easily identified colored conductors
- High performance
- Low capacitance for long runs
- Twisted and shielded for noise immunity
DeviceBus Paired Cables for Honeywell Smart Distributed System with Each Pair Individually Beldfoil® Shielded (100% Coverage), PVC Insulation (Power), FPE Insulation (Data), Gray PVC Jacket, Drain Wire
3087A 22 AWG Stranded (19x34) Tinned Copper Conductors, UL AWM Style 2464, 30V 80°C
3086A Power Pair: 16 AWG Stranded (19x29) Tinned Copper Conductors, Data Pair: 20 AWG Stranded (19x32) Tinned Copper Conductors, UL AWM Style 2464, 30V 80°C
Custom cables are available upon request which can utilize any number of construction features such as:
- Armoring: Aluminum Interlock, Steel Interlock, and Continuous Corrugated Aluminum
- Armor Tapes: Corrugated Copper, Aluminum, and Steel
- Jackets: PVC, CPE, LDPE, TPE, HDPE, Fluorocopolymer, Oil Res II, Low Smoke Zero Halogen (LSZH), Haloarrest®, and Polyurethane
- Shielding: Overall Beldfoil®, Duofoil®, TC Braid, TC Double Braid, Individual Beldfoil Copper Tape Shields, and “French Braid”
- Insulations: Datalene®, XLPE, FEP, Polypropylene, Foam FEP, HDPE, PVC, TPE, and PVC-Nylon
- Conductors: Solid BC, Stranded BC, Solid Bare Copper-covered Steel, and Stranded TC
For information on other protocols see our Industrial PLC/DCS Cable Cross-reference.