17 of October 2017 | 16:29
The Sala São Paulo is one of the most important concert halls in Brazil. Located in the center of the São Paulo capital, in the historic building of the former Sorocabana Railroad, it is home to the São Paulo State Symphony Orchestra (Osesp). Its architectural complex dates from 1925 and integrates the historical patrimony of the city. The Sala was born from the adaptation and restoration of the Júlio Prestes Station and was inaugurated in July of 1999.
Among its peculiarities is the adjustable ceiling, a system that joins elements of the original architecture of the building with new concepts of architecture and technology. The ceiling of Sala São Paulo can reach a maximum height of 25 meters above the main floor. In this ceiling, 15 panels, with 7.5 tons each, are contained by 20 cables. The panels can be controlled individually, allowing the hall volume to vary between 12 thousand and 28 thousand m³, which ensures that the intensity of any composition has its acoustic concept respected.
This whole system is controlled by computers, locks and automatic sensors. In addition, 26 velvet banners can be moved up to eight meters high, according to the necessary vibrations. Throughout the roof, a roof covering respects the concept of the building's original design, but uses more modern materials such as polycarbonate thermo-acoustic tiles.
Lately, the Sala São Paulo had been experiencing difficulties in relation to the automated system for moving the panels. The control of this system was done by CLP and frequency inverters manufactured by a company that no longer operated in Brazil. With that, every need for maintenance, it was problematic to find spare parts and people with knowledge about that technology, which was also outdated. Time was wasted in this search and could compromise the exceptional acoustic quality of the Room. Therefore, in the second half of 2013, Osesp, administrator of the space, sought in the market options to modernize the system of control of the ceiling.
• CompactLogix L33ER Controller
• 18 PowerFlex 755 frequency inverters
Among the alternatives presented to Osesp by different companies specialized in automation, the Tago Industrial Automation stood out, which, with the support, specification and full support of the Ladder-Edge Authorized Distributor, proposed a complete overhaul of the system. "Our proposal was chosen for presenting the best technical solution, according to the assessment of those responsible for the mechanical maintenance of the equipment," said Osvaldo Kirst, director of Tago.
Tago designed a system with CompactLogix L33ER controller and 18 PowerFlex 755 frequency inverters, ideal for the load-lifting application, such as mobile ceiling plates. The expectation of Daniela Marcondes, maintenance and works manager of Osesp, is "to reduce costs with personnel for the operation of the plates and maintenance of parts, because with the new system, we will have greater efficiency and performance of the engines." And one of the most important features of this solution, and that will help Osesp have their expectations met, is the automatic reconfiguration of the inverters - plug-and-play, allowing the system to configure itself, dispensing experts. This automatic autoconfiguration capability is possible through the Automatic Device Configuration (ADC) function.
• Reduced personnel costs for plate operation and maintenance of parts thanks to plug-and-play automatic reconfiguration capability of the inverters.
• Increased engine efficiency and performance.
As one of the cultural spaces most sought after by the public that lives in the region and also by the tourists who visit the capital, Sala São Paulo had a short term, within which it needed to have the system not only replaced, but also in perfect operation.
In less than 30 days, the ceiling control system was ready to move according to the Hall's varied and extensive programming. "The ability to meet the deadline set by Osesp was also a decisive factor for Tago's winning bid, and this was facilitated by our choice of Rockwell Automation's Kirst technology. Platform tests were performed inside the Tago, so that, when bringing the system to the room, only fine adjustments were necessary. "We knew the Rockwell Automation brand, but we had not worked with it before. So far, the company has met us satisfactorily, and the products showed the expected performance, "says Daniela. This end-customer satisfaction opens up good prospects for Rockwell Automation and Ladder-EDGE to participate in the Sao Paulo Room automation expansion, which aims to integrate the automation of other elements such as the stage into the ceiling control system.