Foreword: At this stage, the stitching of dough bags mainly relies on manual methods to put dough bags on the equipment for stitching. Manual labor is intensive and inefficient. Under this circumstance, the full-automatic feeding and double-sewing integrated machine appeared in front of the majority of users. Now the PLC is required to control three inverters, two servo controllers, and multiple relays to realize the coordinated actions of the equipment. PLC: T48S2T transistor output type PLC The controller chooses Haiwell’s T48S2T, the host is externally powered by 220V AC, 28 DI, 20 DO transistor output; comes with two communication ports (RS232+RS485), two 200K high-speed pulse inputs, and two 200K high-speed pulse outputs. The system needs 3 frequency converters to feed the running speed, so as to avoid excessive speed and bad sewing quality. The T48S2T host has its own RS485 port, which can be used as the master station to realize high-speed communication with three inverters, and issue running and speed commands to the inverter. Compared with analog expansion, it saves a certain cost. Use the built-in RS232 port to communicate with the touch screen of the system to realize the setting of the control process. Two high-speed inputs are connected with the encoder to measure the running speed of the equipment. Two high-speed pulse outputs are connected to the servo controller to control the loading and feeding requirements of the system. Therefore, using a host of T48S2T can easily achieve the above functional requirements, without the need to purchase extra expansion units. There is no need to increase unnecessary expenses, saving customers the cost of use. Haiwell PLC communication program is simple, no matter which communication protocol you use, you only need one communication instruction to complete complex communication functions. The baud rate of the inverter in this example is 9600, and the data format is N, 8, 2. The following is an example program for writing inverter frequency communication. The high-speed pulse input in this case reads the running distance and speed of the encoder. The high-speed pulse output in this case controls the running distance and speed of the servo controller. The forward rotation and reverse rotation control are the same as this programming principle. Haiwell PLC is a domestically produced high-quality product. After a long period of use and operation, its stability is high and the processing speed is fast. It has excellently completed the complex action requirements of the equipment, and has been highly recognized by users. The reliability of equipment operation has reduced the labor intensity of factory workers a lot. High praise from workers. 2.5 USB3.0 HDD Enclosure Hdd Enclosure,Hdd Enclosure Usb Hard Disk Case,Hard Drive Disk Cas,External Hard Drive Enclosure Shenzhen GuanChen Electronics Co., Ltd. , https://www.gcneotech.com
