In order to always be able to provide customized, user-friendly solutions for its clients when integrating televisions, projectors, automatically retractable screens or other electronic devices, the company relies on the LOGO! 8 logic module – and its new web server functionality.
In the installation of electrical lift systems for TVs, monitors and projectors, the logic module serves as the higher-level controller that drives the respective motors and component controls, rotating the screen to a defined end position.
Customers frequently list two main requirements for their systems, explains Flatlift CEO Sascha Rissel. “First and foremost is quiet operation. The emission of noise plays a very important role,” he emphasizes. “Therefore, all components including the motor and gearbox are enclosed to drastically reduce system noise. Additionally, the entire installation is insulated from the furniture or covering with special soundproofing components.”
The second most important issue is the speed at which the screen moves. “Our systems can be extended and retracted at a maximum rate of 30 to 40 millimeters per second,” Rissel continues. Although customers can control how fast their screens retract, the maximum speed preset in LOGO! 8 cannot be exceeded in order to prevent control components and motors from overheating. Also, as a result of the new web server functionality of the current LOGO! 8 version, every application can be controlled at the push of a button – or even from a smartphone or tablet.
“The web server in particular offers many possibilities,” Rissel notes with enthusiasm. The free LOGO! Web Editor tool allows users to create custom websites with their own images and icons. The process is both easy and intuitive, requiring no knowledge of HTML. Since each logic module has an Ethernet interface, several applications within a LAN network can be interconnected and centrally controlled by Wi-Fi. With LOGO! Soft Comfort, the Wi-Fi connection also allows software updates to be easily installed without standing directly at the controller.
“Safety functions are also very important to us,” Rissel affirms. Accidents can happen quickly if someone reaches into the shaft at an inopportune moment, such as when the lid is closing or a screen is moving down. In these instances LOGO! evaluates the signals from suitable barrier rails and sensors, and as soon as an obstruction is detected, the lift stops immediately and receives a control signal to move in the opposite direction. This active pinch protection prevents hands and fingers from getting caught and injured.
The web server in particular offers many possibilities.Sascha Rissel, CEO, Flatlift TV Lift Systeme GmbH
“We have been relying on LOGO! since 2011. The latest version in particular offers numerous advantages to us and our customers,” explains Rissel. He and his team were particularly impressed by the easy programmability, user-friendly menu navigation and simple network integration with its new web server functionality. Flatlift technicians write the programs themselves using LOGO! software. “We also developed macro modules – UDFs, user-defined function blocks – which help us in situations such as warranty cases, where we need to understand how often a customer has operated the system or whether parameters such as duty cycles and duty ratios have been adhered to,” explains Rissel. Compliance with the time periods defined for the duty ratio are just as important as speed limitation if you want to keep motor and control system components from overheating and damaging the system. In order to maintain this compliance, time functions are programmed that limit screen movement.
The company works with local partners to provide on-site system installation at the customer’s location. “These local partners are often already familiar with LOGO! control systems from Siemens and thanks to the simple menu prompts of LOGO! 8 they can quickly and easily adjust the settings and parameters on site, precisely adapting them to the respective requirements,” says Rissel.
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