Understanding dynamic load- bearing capacity in cable chains
Cable carrier systems with separation bars help to avoid tangling and disruption of power and signal transmission. Choosing the best cable for an industrial application is one of the most critical design decisions of any complex automated system. That said, cable selection is often an afterthought and not given the time or respect it deserves. As the lifeblood of the system, cables and wires are vital to transmitting power and sending control signals and data across wide expanses in a timely and reliable manner. Here we take a look at some of the most important factors to consider when specifying industrial cable. Wires and cables intended for use within cable chains are subject to enormous loads. Especially in highly dynamic applications, several factors should be considered when choosing the right cable – durability, reduced weight, a small minimum bending radius and the ability to fit within tight spaces. Many of today’s automated production environments must meet rigorous productivity benchmarks, often requiring components to handle speeds of 5 m/s and acceleration of 50 m/s2, along very lengthy paths. To meet these demands, every component in the system must be optimised to work together, including the cable, wiring, cable chains and carriers. Knowing the specific application and industrial setting in which the cable chain will be used will help determine the characteristics required in its interior parts—the cables and wires. A good place to start is understanding the physical forces acting on the system. Regarding mechanics, the following loads must be considered: Push and pull loads These forces act in the longitudinal direction of the wire. Static – Vertical forces such as gravity act on stationary cables (ex. fountain submersible pumps). Dynamic – Horizontal forces from acceleration/ deceleration act on the wires within the cable chain. Static and dynamic – Cables moving […]