The burner among controllers

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PNOZmulti 2 carries out functional safety and burner control tasks as a complete solution in a single system; these are tasks that were previously performed by separate burner controllers. That’s quite a challenge, as monitoring involves a complex control sequence: At the heart of every wafer production line is the oven, which may be up to 35 m long depending on the product and plant configuration. The heating is provided by gas-fired long tube burners. The burner controller’s most important task is to monitor the extinguishing of the flame and if necessary to interrupt the gas supply immediately in order to avoid an explosion in a worst case scenario.
Some older burner controllers without bus capability have already been replaced by PNOZmulti 2 – another application area for Bühler because, as a modular system and with wide-ranging configuration software, PNOZmulti 2 is flexible and adaptable in terms of hardware and software.

According to industry insiders, every second wafer manufactured industrially worldwide is baked using a Franz Haas wafer machine from Bühler. As a result, all customised plants must be highly flexible and, above all, meet all country-specific safety standards. That’s why the Austrian wafer machine specialist relies on the burner version of the configurable safe small controller PNOZmulti 2 to safely control and monitor its ovens. After all, the TÜV-certified burner block in the software tool PNOZmulti Configurator is flexible and can be used worldwide for a variety of customised machine configurations.

Company founder Franz Haas invented the first wafer machine as early as the end of the 1940s. Since 2018 the company has belonged to the Swiss Bühler Group, with subsidiaries around the globe. 700 people are employed in the wafers area of the Consumer Foods division at the Leobendorf site, working in development, design and production, as well as sales, service, maintenance and spare parts management.

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