APPLIED TECHNOLOGY DRIVE SYSTEMS HIGH PERFORMANCE SOLUTION BENEFITS MACHINE DESIGN
Based near San Sebastian in northern Spain, Athader manufactures coil processing lines, in particular slitting lines, and levelling and cut-to-length lines for steel, stainless steel and aluminium. The equipment is then shipped to customers including steel coil processors, rolling mills, and profile and tube manufacturers, 80% of which are located outside of Spain. The company was using a number of different brands for its
drive requirements, however facing reliability issues it turned to Emerson. According to Athader, because a number of its machines are bespoke, the adapted solutions provided by Emerson are fundamental to business success. This is a benefit for the types of machines manufactured by Athader, such as steel winders/unwinders, stacking machines, rolling machines, longitudinal and transversal shears, packaging machines and cutting systems. With the latter, a rotary shear device for high thickness coil is expected to work at 100m/min, while a flying shear system for very high yield stress material (with a high pressure rating of 1100 Mpa) works at 50m/min. Despite these elevated speeds, precision must be to within ±0.2mm. The Unidrive M variable speed drives not only offer high
performance and reliability, but impressive speed and response, which in turn allows high dynamic application control with repeatable precision, the company explains. The intelligent modules used with the drives permit the company to manage comprehensive programs requiring motion in several axes and profiles synchronised with high precision. This involves fast and accurate movements that serve to minimise the number of rejected items and maximise production uptime, all without inducing stress on the mechanical parts. An additional benefit was the
straightforward integration capability. A recent application was the development of a transversal cutting line for steel bands up to 25mm thick and 1800mm wide. Here, the Emerson solution included a control cabinet, with a total of 19 AC drives in a DC bus configuration, and three control desks. Moving through the cutting line in sequence, the uncoiler is served by
a single 45kW Unidrive M701 featuring an Si-Application option module and dedicated unwinder software. From here, the unwound coil moves into two levellers, each of which relies on two Undrive M700 units in parallel (180 and 160kW respectively) with accompanying software. In addition, four Unidrive M200 drives from 5.5 to 7.5kW are deployed for auxiliary elements. The next station, a flying shear, features one 110kW Unidrive M700 with Emerson’s dedicated software, along with a single 5.5kW M200 for the conveyor. In addition, a total of 10 Unidrive M200 drives control further parts of the system, such as inspection and evacuation conveyors, stackers and stores. The cabinet also features two Emerson SPMC2402 DC rectifiers working in parallel. The complete line is
controlled by a Siemens PLC, while adjustment and supervision is made via a 15” colour touchscreen.
Furthermore, Profinet and Ethernet are also included. Using the Emerson solutions has enabled Athader to optimise its
machine designs. As an example, production speeds have increased by more than 300%, from 200 to 600m/min for longitudinal systems. In addition, the machines can now process a wider range of materials, from 12mm band thickness (500 MPa) in the past, to the current 25mm thickness (1100 MPa).
Emerson
www.EmersonIndustrial.com/Automation
Enclosures from the smallest to the largest.
ENCLOSURES POWER DISTRIBUTION CLIMATE CONTROL
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60
