Therefore, it is mostly used on knitting machines or less demanding textile machinery. Controlled by industrial computer and programmable controller PLC. In most newly developed textile machinery products, the AC asynchronous motor variable frequency speed regulation device is applied almost without exception. For weaving machinery, there are sizing machines and warping machines. One type is the commonly used Y series AC asynchronous motor.
Large low speed loom reed suppliers, with swing frequency function, low electrode noise, has been well received by customers in the textile industry. Is a high-quality, high-level equipment. However, there is still a large gap compared with the international advanced level. 2. At the same time, the variable speed governor is used to control the speed of the 39 main motors to control the number of revolutions of the spindle, so that the spinning speed of the spun yarn changes in large, medium and small yarns to reduce the yarn breakage rate. Reduce power consumption and reduce costs Textile mills cannot do without air-conditioning equipment. Industrial control computer,
PLC and inverter are used to control 4 motors, which rotate the ingot wing, roller, simple tube and dragon ribs to lift and lower, respectively. Speed range can reach 100: 1. 3. It is controlled by a PLC programmable controller or industrial computer, and then a multi-motor synchronous and coordinated operation is realized through a frequency converter. FA491 high-speed roving frame is a new type of roving frame developed in China in recent years.
Among them, PLC is used to control the operation of the whole machine and the parameters such as the moisture regain, the temperature of the drying room and the pulp tank, and the pressure of the pressure roller. When the air conditioner motor is controlled by a frequency converter, the power consumption is reduced, and the electricity expenditure is greatly saved. The tapered gear shifting device and forming device are removed, which simplifies the mechanism. Adopt speed sensorless vector control inverter. In order to increase the switching frequency of the inverter, a power insulated gate bipolar transistor (IGBT) is used instead of a general high-power tube (GTR).
Maintenance information. The engineering station is an ordinary PC connected to the operator station via Ethernet. A set of WinCC software is also running on the engineering station, configured via DCOM, and also accessing data from WinAC in OPC mode, and certain permissions are higher than on the operator station. Because WinCC industrial configuration software is used on the operator station, it is very convenient for management to obtain production information from this production line. WinCC has a variety of methods for online data exchange.
For example, it can use the client / server mode of WinCC, or the Web browser function of WinCC, etc., to provide multiple options for the networked production management of user plants in the future. A mobile TP170B operation panel is directly connected to the system's PROFIBUS network through the PROFIBUS 3-port connector on the ET200M interface template IM153 on the C or D device. Manually operate any C device or D device on the network so that The commissioning personnel can perform manual commissioning directly on the side of the device.
TP170B integrates the manual debugging screens of all A, C, and D devices on the production line, so one TP170B can complete the manual debugging of all devices. As for the system control software, the control program of B and E devices is completed by its own CPU224. A, C, D device control program is completed by WinAC Slot 412. Among them, the A device has two high-speed counting requirements, which are completed by two FM350-1 high-speed counting templates. There are two pressure PID adjustments in each D device. There are four PID adjustments in the system. In view of the high-speed instruction execution speed of Slot 412, the S7 software PID function block can fully meet the requirements.
An important part of the wire knitting machine control software is to complete the user's multiple process selection requirements. As shown in Figure 1, textile mills can set up production lines at will according to the technological requirements of their products. For example, you can purchase only one set of A, B, C, and D equipment and several E equipment to form a production line; or you can purchase one set of A, B, and C equipment, two sets of D equipment, and several E equipment to form one production line; or Buy 1 set of A equipment, 2 sets of B, C, and D equipment each.