In textile production, the setting machine improves the hand, slip, color, width and appearance of the fabric by padding various dyes to soften, stiffen, slip, tenter and resin. For non-pure cotton quality, it can also play a role in stabilizing the size. The working principle is that the cloth is immersed in the material tank and is uniformly pressed by the rolls and then enters the oven. When the cloth passes through the oven, it will be dried and shaped under the action of high temperature hot air, and the cloth after the setting has a good hand feeling and a stable size. The entire control system includes synchronous system control, temperature control table communication control, and thermal energy recovery control.
Figure 1 Field device
1. Selection configuration
(1) Industrial PC P22
● 22" TFT, 1920×1080, Intel Bay Trail J1900 4-core processor
● support VGA and HDMI output, optional WIFI
● Linux system, running 24 hours a day
● built-in Haiwell Cloud SCADA software, support mobile APP remote control, web page remote access.
● Support mobile APP alarm information push. If the APP is not open, the system will send an alarm message to the owner and administrator phone in the form of a short message
(2) C10 touch screen
● 10 inch TFT screen, 800x480 resolution, A8 CPU, 4G Flash, 512M RAM.
● support: Serial / U disk / SD card / Ethernet / Haiwell cloud and other ways of program download;
● intelligent management, support cloud / mobile phone access control, strong operability;
● original A/B Key security mechanism, multi-language automatic translation, engineering overview interface;
● integrated Haiwell Cloud service, built-in Haiwell cloud engine; achieve remote functions of mobile cloud APP, computer cloud website, SMS alarm and map positioning.
● N series motion control type PLC can be expanded with 7 modules, also built-in one RS232 and one RS485 port;
● Stand-alone supports 16 points (8 channels 200K high-speed pulse input), 16 points (8 channels 200K high-speed pulse output).
● Program is permanently saved, the program capacity is 48K, and the instructions are rich, which fully meets the requirements of on-site logic control.
● For analog processing, it does not need to write any conversion program. We can directly acquisit the on-site temperatures, detector signals.
2. Field networking
Figure 2 Network diagram
3. Inverter synchronization solution introduction
The synchronous system drive part can achieve synchronize by the inverter to control the motor speed. The speed synchronization mode can be controlled by ① communication 2②analog ③high speed pulse frequency; because the number of field inverters is large, the speed synchronization requirement is high, once the speed is not synchronization, the cloth on the machine may be broken. If use analog to control speed, it needs multiple analog outputs which will increase the cost. Therefore, it is the best way to achieve synchronization by the high-speed pulse frequency. According to this solution, our Haiwell N series host PLC which support 16 points each channel 200KHz high-speed pulse output, can fully meet the requirements of field control.
4. Field control pictures
Figure 3 Field panel diagram (partial) and IPC with Haiwell SCADA configuration
5. Solution summary
● IPC is built-in 6 serial ports and two Ethernet ports. The rich communication interfaces can meet the requirements of on-site communication control.
● IPC supports Haiwell cloud platform, intelligent management, supports cloud/mobile access control, and has strong operability; IPC defaults to Linux system and has fast response speed.
● Original A/B Key security mechanism, integrated Haiwell Cloud cloud service and built-in Haiwell cloud engine; make access safe and reliable, and secure remote security.
● N series PLC which support 8-channel AB phase high-speed pulse output can be split into 16 points 200K single-point high-speed pulse output;
● Haiwell PLC 485 communication supports different baud rates, different protocols, different data formats for simultaneous communication, the communication program does not need to process timing, greatly saving the engineer's programming time;
● On-site selection of Haiwell Ethernet PLC types, Ethernet PLC supports multiple upper computers to access at the same time, and Ethernet port can also be used as the master station to access other devices, which is easily debugged.
● It can also remotely download/upload the HMI program, firmware upgrade, historical data record export and other operations through Haiwell HMI.
● It can also remotely download/upload the PLC program, firmware upgrade, monitoring and PLC information diagnosis through Haiwell HMI.