Bake the perfect bread, and the quantity is large enough, you need a stove that accurately controls the process from start to finish. This is exactly the task facing Mechatronics Ltd., a system integrator and official distributor of Delta motion, drive, control and robotics products in Bulgaria.

bread. Just thinking of the word, your sense of smell will imagine tasting yeast-based cuisine on the counter of your favorite bakery. But to bake perfect bread, and the quantity is large enough, you need a stove that accurately controls the process from start to finish. This is exactly the task facing Mechatronics Ltd., a system integrator and official distributor of Delta motion, drive, control and robotics products in Bulgaria. The requirements of the bread oven machine define four temperature zones. The first area is particularly powerful and can compensate for the cooling conveyor belt and the relatively cold bread entering the oven. In this step, steam is also injected into the furnace to give it a freshly baked luster. Followed by three temperature-controllable baking zones, these baking zones are carefully controlled to bake the best bread. The conveyor belt of this mobile oven design must also maintain the correct speed throughout the process. The perfect standard is the Human Machine Interface (HMI), which is used to configure the baking process, provide the temperature status of each area, and output any error status information. For HMI, the team chose Advanced HMI DOP-107WV from the DOP-100 series. This touch-based control panel has a 16:9 7" color TFT screen and a narrow bezel with a modern appearance. Its multi-language support means it is very suitable for the target market, and the user-friendly editing software ensures that the end user interface is easy to navigate. It With multiple COM ports supporting RS-485, it can be perfectly integrated with other components selected for the furnace. Considering the operating environment, the flat, wipeable surface of DOP-107WV proves to be ideal for dusty bakeries. Conveyor belt control It is implemented using MS300 series inverters. This AC motor variable frequency drive (VFD) also supports RS-485 Modbus interface, which is ideal for open-loop control of IM and PM motors. Of course, the quality of baking is ultimately determined by the furnace. Especially Pay attention to choosing the best control method for the seven heating elements used. After careful consideration, the DTC1000 thermostat was selected as the main control, and the remaining 6 heaters were connected in parallel to the DTC2000 thermostat. These are also connected to Modbus. The choice is mature, Reliable components and careful programming are essential to provide a low-maintenance design that can run 24/7. In order to provide the best temperature regulation, the automatic tuning function of DTC1000/2000 is used. The input is obtained from a third-party PT100 temperature sensor The heating element is controlled by solid-state relays. Once the sensors and heaters are installed in this 250 kW furnace, the automatic adjustment uses a training process to configure the closed-loop PID controller. What makes the implementation more complicated is the last three baking Double heating and induction of the zone. One heater is located above the conveyor belt and the other is located below. Each heater needs to be set to a different temperature. The alternate output of the Delta temperature controller is available and is connected to a relay to provide audible and visual alarms Signals. These signals are also replicated in the DOP-107WV HMI. Closely related to the baking quality is the speed control of the conveyor belt. The MS300 VFD is connected to an inductive proximity sensor, which is easy to clean and maintain accuracy in a dusty baking environment. The built-in programmable logic controller (PLC) of MS300 is installed close to the gear to monitor and calculate the conveyor speed. This is constantly compared with the set point defined in the HMI. Therefore, the end customer only needs to set the required baking Bake time, the required temperature, and press Run to start baking. The Mechatronics Ltd. team benefits from the extensive industrial automation solutions in the Delta product portfolio. Because the selected components have out-of-the-box interoperability and connectivity , So it simplifies the integration of VFD, HMI and temperature controller. Delta field application engineer Victor Ogedegbe said: "Most people would think that baking bread is very simple. On the contrary, the bakery project highlights the skills required by bakers and engineers to create machines that provide perfect quality. "Bread. The automatic adjustment function of DTC1000/2000 plays an important role in ensuring that the baker can provide quality products in every batch by providing excellent temperature control." Mechatronics Ltd. Automation Engineer Toma Draganov said: "Accurate temperature control It is very important to us, and the support of the Delta team is essential to configure the DTC1000/2000 self-tuning function. This assistance contributed to the project which took only seven months from the initial design stage to full production."

Founded in 1971, Delta is a global leader in switching power supplies and thermal management products. It cultivates smart manufacturing in industrial automation, building automation, telecommunications power, data center infrastructure, electric vehicle charging, renewable energy, energy storage and display And sustainable urban development. As a world-class corporate citizen, Delta takes “providing innovative, clean and energy-saving solutions for a better tomorrow” as its mission statement. With its core competitiveness in the field of high-efficiency power electronics and a business model that embeds corporate social responsibility, Delta resolves Key environmental issues such as climate change. Delta serves customers through its sales offices, R&D centers and manufacturing facilities in nearly 200 locations on five continents. Throughout its history, Delta has won many global awards and recognitions for its business achievements, innovative technologies and dedication to corporate social responsibility. Since 2011, Delta has been selected for the DJSI World Index of the Dow Jones Sustainability Index for eight consecutive years. In 2017, Delta was selected as a climate change leader by CDP (formerly known as the Carbon Information Disclosure Project) for the second consecutive year.

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