Cable specialists Nexans to appear at SPS/IPC/DRIVES 2006 in Nuremberg, 28-30 November, Hall5, Stand 324
Flexible cables and advanced network solutions
Robot cables: Torsion capability tested in the laboratory and in practice
Twisting has no effect on the torsion-capable cables from Nexans, which are ideally suited to unremitting use in robotics. Depending on their design, they can be twisted by ±180°, ±360° or ±540° – for hundreds of thousands, even millions of cycles. To avoid the lead being stretched or compressed internally, the cables are produced with as long a stranding as possible. Bandings increase the gliding quality and enable a cable wrapping to act as a shield in place of a meshwork. The combination of these measures reduces the resistance of the cable to a rotation, and prevents premature wear, as confirmed by tests: before launching its torsion-capable cables, Nexans put them through their paces in the Nexans Research Center in Nuremberg. In the new Automation Application Center at the site, solutions are developed and tested at length to meet a wide range of customer requirements.
Torsion-protected: Avoiding twisting damage
Excessive twisting is also undesirable with robot-programmed hand tools or teach panels. To avoid the kinks and knots that affect simple telephone cords, the cables are torsion-protected. Their substructures resemble the dragline mounting cable and can be moved frequently without damage. A torsion protection meshwork in the outer sheath, or – if applicable – between the inner and outer sheaths counteracts the twist-ing.
Active components: Safety writ large
Nexans’ networking expertise is also revealed in active components, such as those for the Industrial Ethernet. These are developed and produced in Mönchengladbach. The new Gigabit Ethernet switches for industrial use meet the elevated requirements of the iSwitch G1042 series. For example, as well as boasting eight data connections and an option to connect SFP transceivers in Gigabit Ethernet technology in both uplinks, the switches also support Power over Ethernet (PoE). With suitable end devices like IP cameras or wireless access points, wall power supplies are superfluous. The switches themselves can be supplied with power on a multiple redundancy basis to prevent failures, or draw their energy via twisted pair data lines. Configuration of the top of the range iSwitch G1042 is easy, as the devices can be configured via the Web, Telnet or SNMP. The configuration can be stored on a card slot for SD cards and transferred to other devices, or to the new switch in the event of a failure.
Industrial WLAN solutions: Reliable wireless communication
Failure protection is as important with WLAN access points as it is with the iWLAN 40-2. Here for example, two integrated wireless LAN modules ensure the reliable connec-tion of industrial trucks, monitoring cars and other mobile equipment. They work with a data throughput of up to 108 Mbit/s on the 2.4 and 5 GHz frequencies. The 5 GHz band (with a maximum 19 channels) often allows transmission with a reduced suscep-tibility to disturbance in the industrial environment. The devices can be integrated in the network as access points, bridges, routers or clients.